The Garrett GT2056 turbocharger is the biggest turbo in the GT20 family. With a 55 Trim compressor this turbo will give you 260 HP. Recommended for engines in the range 1400cc - 2000cc this is the turbo you can find under the bonet of many different cars. Also this is a popular turbo to turbocharge motorcycles with. Will work well for anyone looking for 140 - 260 HP and have good spoolup also.
CHRA: 433289-234
Bearing: Journal
Cooling: Oil
Compressor
Inducer: 41.5 mm
Exducer: 56.0 mm
Trim: 55
A/R 0.53
Turbine
Wheel: 47.0 mm
Trim: 72
A/R: 0.46
Wastegated
If we have a look at the compressor map we can see that this turbo is capable to reach almost 300 HP. And if you need to you can push the GT2056 to over 2 Bar of boost pressure. But it wont give you any more air flow. So no more power.
The oil outlet thread is the same M6x1.0 that the other GT20 turbochargers use. But you get two options with oil inlet the ordinary M10x1.0 (F) or M14x1.5 (M)
But still the Garrett GT2056 turbo is not watercooled. It's not a big deal, but if you don't like to do cool down everytime you shut of you're engine. You might want to consider some other turbo.
TITLE | Garrett GT2056 Turbo Compressor Wheel | |
OE NO | 436563-0001 | |
APPLICATION | Suitable for Garrett GT2056 Turbochargers | |
MATERIAL | Aluminum Alloy | |
DIAMETER (A/C) | 41.55 mm / 56 mm | |
HUB LENGTH (D) | 31 mm | |
TIP WIDTH (B) | 8.3-3.6 mm | |
SHAFT SIZE (E) | 5.083 mm | |
BOTTOM | Superback | |
BLADES | 6/6 |
TITLE | Garrett GT17 GT20 Turbo Turbine Wheel | |
OE NO | 434715-0013 / 434715-0027 | |
APPLICATION | Suitable for Garrett GT17 GT2056S Turbochargers | |
MATERIAL | Inconel | |
DIAMETER (A/B) | 40 mm / 47 mm | |
TIP HEIGHT (C) | 6.1 mm | |
JOURNAL BEARING (D) | 7.88 mm | |
COMP. WHEEL BORE (E) | 5.09 mm | |
BLADES | 12 |
Service Kit | ||
Component | Quantity | Item |
Journal bearing | 1 | 1 |
Retaining ring, jnl/brg | 1 | 2 |
Pin, anti-rotation, jnl/brg | 1 | 3 |
Piston ring, t/end | 1 | 4 |
Thrust bearing | 1 | 5 |
Bolt, seal plate/th brg | 4 | 6 |
Thrust spacer | 1 | 7 |
Piston ring, c/end | 1 | 8 |
O ring, seal plate/brg hsg | 1 | 9 |
Thrust collar | 1 | 10 |
| Locknut/shaft | 1 | 11 |
| O ring, c/hsg | 1 | 12 |
| Bolt, c/end | 6 | 13 |
| Bolt, t/end | 4 | 16 |
WHERE CAN I GET THIS TURBO AM IN KENYA CAPABLE OF IMPORTING
ReplyDeleteHI ,
ReplyDeleteI have Renault Megane Coupe III 1.9dci 130HP f9q engine.
The engine have the GT17/49V Turbo.
Tunner said me with this turbo can handle 180Hp with some mods filter,exhaust.
I was wondering for upgrade the turbo and how much can handle the stock engine .After that i readed in on post you suggested this turbo for 1.9Dci F9Q can Handle 250-300hp.
How many Max Hp Could get with GT2056 in safe mode with stock engine?
If is yes what others mods i need to make to archive this HP?
Thanks in advance.
Hello, I'm not too familiar with the 1.9dci engines and also there are not many people that choose to tune these engines, other than the normal chip tunes and filter exhaust mods.. So I can't really give you any good advice on what you should upgrade for the stock engine to be reliable.
ReplyDeleteThat said I would not worry about things like upgraded connecting rods and pistons because the stock 1.9dci parts look strong to me and I see no reason why they should not handle more power.
With the GT2056 turbo fitted you should be able to get at least 200 hp on your stock engine. I'm not sure what the stock boost pressure is on the 1.9 dci engines and what the stock map sensor is capable of running but the turbo is capable of +250 hp, but I would expect you need to run at least 2 bar boost pressure to get close to that power figure if not more. The turbo is capable of running around 2.5 bar if needed, but I doubt the stock sensors etc can handle that high boost pressures.
Hello from Spain, I have a bmw 330D N57D, 258 Cv stock, my car has 310 hp power map, but I can not upload it anymore because the turbo is in the limit. I want to get to 370-380Cv, what is the turbo that you consider perfect for it? Of course within my plan is to update the intercooler and the exhaust system, for the moment I want to keep the stock injection system
ReplyDeleteAll the best anf thanks in advance
Of course my stock turbo is GTB2056
ReplyDeleteThanks again
Hello RRVV, for drivability I would try to get hold of the compound BorgWarner triple-turbo system that is found on the new N57S engines. That should be good for 380-440hp with a good powerband from 1500rpm+ https://drive-my.com/en/tech/item/2172-n57-bmw-s-family.html
ReplyDeleteIf you want to stick to a single turbo then something like the Holset HX35 would make the power and be less complicated if you can make it fit, but you would also not have the wide powerband and power delivery as going with a smaller twin turbo or triple turbo compound setup that the other N57 engines use.
Thank you for your quick answer!
ReplyDeleteI have been looking at the different options of the big brothers of my engine, with double or triple turbo and it seems complicated and expensive ...
With a single turbo for a power of 370-380 hp I feel that it could be a bit uncomfortable for the day to day, do you think there could be an option with a single turbo that Works more efficiently if the final power is around 350 cv?
Thanks!!!!!
Hello, well there is not that many stock options around for that power range. But if you go with a custom made hybrid turbo something like the GTB2565VK turbo made by AVD Turbo at http://www.turbo-upgrade.com/produse/gtb2565vk-mfs-lighter-tw/2134/
ReplyDeleteYou can get around 360hp with their smaller GTB2565VK single turbo and they also have a 400hp option with bigger compressor wheel. But either way, going with a big single turbo you will lose low end power and probably only start to make boost around 2000-2500rpm with that setup.
hello, thanks again, it seems that the GTB2565VK could work well, thank you very much.
ReplyDeleteDo you think the G25-550 could work? I have seen that it is a high quality turbo that has a lot of operating range available with different A / R 49, 72 and 92. What would be the right one?
Reading your blog is a great help and I am learning a lot about this world, thanks
Hello, the G25-550 turbo could also give you similar power but they also use a bit smaller compressor wheels, but I would say you could get around 350-360hp.
ReplyDeleteThe 0.72 A/R would probably be the best option for a bigger engine I think the 0.49 A/R might be too small for the engine and might choke the power and you could run into surge issues. With the 0.92 A/R you would lose a bit too much low end spool before the turbo starts to build boost.
However only the 0.49 A/R housing use T25 flanges, and the other turbine housings comes with V-Band flanges so you need to check if this is the right style flange for your engine otherwise you would need to make an adapter if you plan on using this turbo.
Hello I have a Nissan Navara with 171ps and I use gt2056v turbo.1)What can I do in order to listen to it more;2)Can i use more bar pressure(1.8 for example)
ReplyDeleteHello, if you only want to hear the turbo more then all you need is a simple open air filter fitted, similar to what is done in this video https://www.youtube.com/watch?v=7Pk3dvMJ2FU
ReplyDeleteHowever the best solution and also more expensive is always to get a cold air induction kit like what K&N have, where the filter is blocked off from the warm air inside the engine bay and only cold air is going into the turbo. But then again that might also block a bit more of the sound coming from the turbo vs having only the open air filter fitted.
hello i have a 407 2l hdi 136cv do you think this 2056 can be mounted on this vehicle?
ReplyDeleteI think changed the clutch only.
Hello, the GT2056 should be a good upgrade turbo for the 407, expect around 200hp and 500nm.
ReplyDeleteIf you decide to change the clutch you can check if any of the Sachs Performance Clutch Kits fits your engine. https://www.sachsperformance.com/en/clutch-kit/competition-clutch-sachs/peugeot-407-6e/2-0-hdi-135-100kw
hello .I have GTB1756VK in vw golf mk4 1.9 tdi 150 PS original..I have done a tune and now it has 216 PS.. I'm asking you if I mount GTB1756VK will I have more lag than GTB1756VK
ReplyDeletesorry I meant IF I install a GTB2056VK
ReplyDeleteHello, there should only be around a 3-400rpm difference between the GTB1756VK and GTB2056VK. And with a good tune it could even be a bit less, so it would be a good upgrade turbo.
ReplyDeletegoodmorning,
ReplyDeletei have a gsxr 1000 k4 engine and i want to install a turbo gt2056.the engine rev at 13000 with injectors stock of 270 cc. is it good for this bike for 0,6 bar and 220hp? thank you
Hello alby italy, the GT2056 should work fine for the 1000cc K4 engine. However you need to get bigger 500cc injectors to get to 220hp and have some headroom and account for boost spikes with this turbo.
ReplyDeleteThe GT2056 turbo can make 260hp at 0,9bar boost on your bike if you are not careful monitoring boost pressure. And if by accident you get a leak on the wastegate line you could push 300hp. So you could end up running lean really quick and melt pistons if you don't have injectors that can supply the extra fuel.
Also remember that if you want to use E85 fuel you would need to have at least 600cc injectors fitted to be on the safe side.
2.5L V6 looking for max 400bhp on a twin turbo setup at 20psi boost with 7000rpm limit... These would be ideal?
ReplyDeleteHello, going with GT2056 turbos should be fine for 400bhp with 20psi boost, you could depending on how much boost you are willing to run push this setup close to 500bhp also if you wanted.
ReplyDeleteIf you are looking for a bit better spool and response you could go with the smaller GT2052 turbos however due to the less airflow, you would need to push them to the limit to get close to 400bhp, probably closer to 350-360bhp would be more realistic.
my setup already use one of those GT2056 with t25 flange. Where could I buy an other one ? mine is dying. also where to get repair kit and gaskets ?
ReplyDeleteHello zak shaker, you need to search for "GT20 rebuild kit" on either Amazon, Aliexpress or Ebay to find all the needed parts.
ReplyDeleteIf you need another turbo and want to save some money you can try and find a used GT2056 and do a rebuild, or you could get a china copy GT2056 also.
But you might have a hard time finding a real T25 flange version. Seems like the 3 Bolt flange or odd 4 bolt flange Nissan Pathfinder GT2056V turbos up for sale are much more common.
I'm using a GT2056 on a GM 1.4 Turbo engine. 52# injectors, 93 octane gas, race valve springs HP Tuners tune, with modified OEM manifold and T25 flange. This in a 1420# autocross only car.
ReplyDeleteThe GT2056 has had the Waste Gate port enlarged as much as possible, but it still tends to over boost and repeated runs at 26-28 PSI will wear the Trust bearing out, and cause the wheels to touch the housing..
"My candle burns at both ends, it will not last the night, but it makes a wonderous light."
Hello, sorry to hear about the turbo issues you are having. If you know for sure the turbo is getting a good steady oil supply, no chance of air (baffled sump / dry sump setup etc.). I like you to look into getting the correct type of 360 degree thrust bearing installed.
ReplyDeleteIf you are repeatedly rebuilding the turbo with the softer sintered type of trust bearings this could be the cause of the turbo not lasting at high boost pressures. Make sure it's the Forged or Billet type of thrust bearing. If unsure you can tell the difference by looking for milling marks from the CNC machining process.
https://www.melett.com/technical/why-turbos-fail/hidden-dangers/gt15-sintered-vs-hot-forged-thrust-bearings/
hey there JD, im currently building a morris mini 1340cc. i have done a twin cam head conversion from a BMW k1100 bike and will be running a stand alone ecu and e85. i am looking at either the gt2052 or the gt2056, i am looking for about 200-250hp out the car and reving to 7000-7500rpm. wanting about 16psi also. have you got any ideas on what size would be better for this application
ReplyDeleteHello carldolan72, if you keep the cams / head somewhat stock the K1100 mini conversion without turbo should make around 120hp without much effort. With 1.1 bar / 16 psi boost you should be right around 250hp with the GT2056 turbo and spool between 3-4000rpm. With some more duration / high lift cams you could get around 300hp with the same boost levels.
ReplyDeleteBut because you are running E85 you won't be limited on how much boost you can run so without any change to cams you could if you like get around to 300hp with 1.5 bar / 22 psi boost.
The GT2052 turbo might give you a little bit better spool and response between shifts due to the smaller and lighter compressor wheel, however you won't get much more than 200hp with that turbo even if you run 1.5 bar / 22 psi boost.
Dobrý den mam 1.9 mtdi cerpadlo z 11mm hlavou a 520 race trisky bude gt2052 dobra volba děkuje
ReplyDeleteHello, the bigger 11mm pump supports more power than the GT2052 can deliver. So if you are looking for around 240-250hp out of the 1.9 tdi then you could go with the GT2056 turbocharger instead because it supports higher boost. However if you want a bit better spool and only looking for around 200hp then the GT2052 is a good option.
ReplyDeleteHello from Greece ... I have a rover 620ti engine mounted on a Land Rover 90 ... in which I have used a walbro fuel pump, a 65.5 exhaust, and a free flow filter ... I would like a little more torque and horsepower turbo I could use with a maximum pressure of 1bar ... thanks
ReplyDeleteHello, you should get around 260hp with 1 bar / 15 psi boost on the 620ti engine. The GT2056 would be a good option if you can find one for a good price. However if you like to have a more modern ball bearing turbocharger you could also go with one of the smaller GT28 turbos, like the GT2854R.
ReplyDeleteHi i own a gpz 750 turbo and i was wondering if Garrett gt2056 fit's in my motorbike. Thank you for your time and i am looking forward to hearing from you.
ReplyDeleteHello dora, it should fit without much issues. But you need a new manifold with a T25 flange for the GT20 turbo. And it's probably easiest to run the bike without the lower fairing like this http://i288.photobucket.com/albums/ll172/4skanker/PHOTO_4890637_46089_7845829_ap.jpg
ReplyDeleteHello, thank you for your quick response... I would like to ask you one more thing. Is it possible to reach 180hp without risking any engine problems, and if so what sort of modifications should we do (for example add intercooler?, bigger ingection and if so what number?). Your advice means a lot to us...!!!
DeleteHello dora, you should need around 1.8 bar / 26 psi boost pressure to reach 180hp on the GPZ 750 Turbo if you are running the stock compression ratio of 7:8:1. Some engines can run into problems with detonation if you are using regular gasoline above 1.5-1.6 bar / 21 psi boost even with a good intercooler.
ReplyDeleteBut even if you stay at a safe level around 1.5 bar / 21 psi boost you should still make around 160hp at that boost level.
Now if you tune for E85 fuel and it's avalialable you should have no problems running higher boost and make 180hp. With E85 you would need a set of 400cc injectors to reach 180hp. If you can only get regular gasoline a set of 300cc injectors should be enough for 160hp.
If however you have space on the bike you could also fit a water methanol injection kit, and have it set to come on at high boost, that way you can run regualar gas and still make 180hp without any risk of detonation.
But you won't really know how the engine will behave on higher boost pressures until you tune it, so if you are lucky you could still make 180hp without any detonation. But if you do find it can run on high boost, I would still add some octane booster to be on the safe side. Because you never know if you get some old / bad fuel it can hurt the engine.
Hello I'm from south Africa is it possible to fit my T5 kombi 1.9tdi with Gt 2056 without any modification I need a little bit of power
ReplyDeleteHello, unfortunately the GT2056 will not fit without modification because the stock 1.9tdi turbocharger have a special turbine housing that is part of the exhaust manifold. What you could do is make a custom exhaust manifold and fit the bigger T5 2.5tdi turbo or a similar size GT2052v turbo.
ReplyDeleteHello, I need a little help
ReplyDeleteI have alpina d10 its m57 diesel engine 3L
Biturbo both turbos are the same gt1749 I was considering gt2056 I would like to get over 400hp hopefully more
and good spool, hopefully low lag?
Thank you
Hello, you would probably be looking at around 300-325hp with twin GT2056 turbos fitted if you keep the cams stock and 5000rpm redline.
ReplyDeleteBut for 400hp you would need to go bigger. If you want to keep thing simple darksidedevelopments.co.uk have a GTD2872VRK Billet Hybrid Turbocharger Kit including cast manifold for around 2000 euro. And that should be good for 350-400hp and still have good spool.
However if you want to keep the cost down and go with single turbo you could always go with a Holset HX40 Super turbo and make your own or buy a aftermarket manifold, that setup should give you close to 400hp with good spool also. Beyond 400hp you would need to go with a HX50 or HX52 turbo or some kind of hybrid 67mm turbo.
Hey JD
ReplyDeleteYour blog was a good read! Very informative.
My query is. I have a 2020 BMW 330i (G20). I checked the turbo in my car and the metal plaque says MGT2056 BMW, P/N 851676-0004. Is this the same GT2056 turbo mentioned in this blog? If so, is the compressor map the same as shown in the pic here? If not, any idea how I can find the compressor map of the turbo on my car? I can give you the S/N if it will be of any help.
Any input will be appreciated.
Regards,
Vipin
Hello Vipin, I don't think you would find any official compressor map for the MGT2056 turbo. But we can make a good guess if we compare other compressor maps.
ReplyDeleteThe difference is the MGT2056 compressor wheel is a 9 blade and the GT2056 use a 6 blade, but both have around the same size. The GT2554R turbo have the same size also but use an 11 blade wheel.
This would make the MGT2056 compressor map look like something between the GT2056 and GT2554R turbo. You could probably cut the top of the GT2056 map at around Pressure Ratio 3. And widen the GT2554R map to around 30 lb/min. That should be pretty close.
Thank you so much for the reply. I've been searching for a long time but finally found someone who was able to help me. I am truly grateful to you for the reply!
DeleteWhat do you think will be a safe max boost to run with this turbo (MGT2056)? The car produces around 9-10psi (maxing out at 11psi) stock. I've pushed it to max out at 21.9psi since I read 22psi is usually the safe limit. Not sure if you understood what I mean (since I'm quite new to tuning and stuff). If you don't know, that's fine too and I totally understand. Once again, thank you very much for the reply! I appreciate it.
Hello Vipin, I'm not sure but I think the MGT2056 and MGT2256 turbos might share the same or similar 360 thurst bearings so you should be safe running around 20-22 psi boost. Going higher might not give you any more power anyway unless you have a really good intercooler or do water/methanol injection to keep things cool.
ReplyDeleteYou could contact Turbo Lab America he might know more about your specific turbo as he does bmw rebuilds and has sold quite a few of these MGT2256S rebuild kits
https://www.ebay.com/itm/BMW-N63-550i-650i-750i-MGT2256S-TURBO-REBUILD-KIT-/123759605119
Hi. I have following turbo model: GT2056KSZ, what are the differences comparing to the one here? Would be possible to see compressor map for that variant? What I can see is that on my turbo there is A/R=0.56 and M75 written. It has higher potential than 300HP?
ReplyDeleteHello, at first glance it does not seem like the GT2056KSZ can flow any more air than the GT2056. I don't have the inducer size so I can't say for sure what the real potential is. They do seem to share the same 47mm turbine wheel and the only big differece is the twin scroll turbine housing.
ReplyDeleteBut you can look at the thread on the Alfa Romeo Giulia Forum there's some more info there https://www.giuliaforums.com/threads/lack-of-bigger-turbos-and-tuning-discuss.45532/
Hi
ReplyDeleteThanks for reply. Yes, I know that forum from your link. Why I'm asking as I know that majority of people who are tuning e.g. Giulia on that stock turbo are reaching max 305HP (some of them 320HP but not sure if that is real)from stock 280HP, so maybe there are some slight differences with more air flow
Hello Wilq, yes there would need to be a bit more airflow to reach a real 320hp. I would expect a bigger 45mm compressor wheel would be needed, and even then you would need to be in the right spot on the compressor map for it to work out.
ReplyDeleteThere is 43mm billet compressor wheels sold for the GT2056s so with that and a really good tune and a good cool day at the dyno 320hp could be in reach. But in real world condition it would be hard to get to that number. http://shopping.kinugawaturbo.com/billetturbocompressorwheelgarrettgt2056s4356mmrexton110blade436563.aspx
If some are getting a real 320hp on paper it could be down to a dyno calibration issue, or perhaps they did the runs with some high octane race gas in the tank.
Hello JD. Thanks for reaching that topic again :) recently I made hybrid turbo upgrade on that GT2056KSZ (bigger compressor wheel and turbine - plus clipping on hot side). I have seen in the logs even 1050kg/h air flow which is about 38 lb/min. However there is no power. Do you know if that is possible that compressor map has not been properly taken into account in correlation with ECU? My tuner did a soft, but there is no expected power (which should be around 370HP)
DeleteJust additional info. I used parts from Focus RS. Based on the drag times which I did (1/4 mile, 60-130mph) it seems that I have the same power as before
Delete.. 305HP..not sure what is wrong if turbo is enhanced with hybrid upgrade...looks like ECU cannot "talk" with newer compressor map. Is that possible somehow??
Hello Wilq, if it's not an ECU tuning issue then it could be the injectors being too small. A good tuner would be able to tell you this.
ReplyDeleteHi. I made an update for compressor wheel to inducer 49.6mm exducer 63mm (stock was: 42/56), and turbine increased to inducer 50.1mm and exducer 45.85mm (stock was: 47/40). It is about GT2056KSZ turbo. How many HP I could expect comparing to original 300hp max and what boost level could be safe in that updated turbo case??. Are you able to answer these questions based on dimensions of the newer compressor/turbine? I have seen 1060kg/h of airflow when 1.78bar has been used in soft
ReplyDeleteHello Wilq, looking into it more you could get around 360-370hp from the updated turbo. However I think because the stock Giulia cylinder head might have rather poor airflow, and also a high 10.0 compression ratio means you are not seeing the power increase. It might be the ECU is already detecting some detonation and reducing power, or there is a set boost limit around 1.8bar.
ReplyDeleteBecause you are seeing more than 1.5bar boost I'm guessing the MAP sensor installed needs to be a 3bar Map Sensor and not the smaller 2.5bar (1.5 bar max boost) that is also found in some models.
So that would mean max boost is going to be limited to around 2.0 bar. But you should see around 330hp with 2bar / 29 psi boost. And to get to around 350hp you would need around 2.2 bar / 32 psi boost pressure.
Either way you won't really be able to run that high boost without running into the risk of detonation on regular fuel, and the ECU will probably limit boost/power well below that to save the engine. You can switch over and tune the car to run E85 fuel. Or one alternative is you could get a water methanol injection kit installed and see if that helps.
But that will only work if the ECU does not have a boost limit set and you make sure you really have a 3 Bar Map Sensor. Best would be to get new pistons and drop the compression ratio to around 8.0:1. That way you could run higher boost without risk of damage.
Hi JD. Many thanks again for very professional answer. I'm not an expert on all of this stuff, but I'm wondering if it's problem with my hybrid turbo or there is other factor which blocks HP potential. I can see airflow on 4th gear 1040-1060kg/h , but for 5th gear there is still boost at 1.75 1.78 but airflow drops to max 960kg/h and that's why it is not producing more power.its not holding high airflow rate and on 5,6 gears I'm starting to see a lot of timing advance reductions -3° on three cylinders. I'm using higher octane petrol (ron=99). Ah one note...I asked hybrid shop to make a clipping on turbine blades. Is that something which could have some impact as well on overall performance?
ReplyDeleteand when it comes to measurement on rolling dyno it shows 326HP on 5th gear (1.78bar of boost)
ReplyDeleteHello Wilq, clipping the turbine wheel would only make the turbine flow more so that won't impact power. And with 960kg/h you should still be able to make around 350hp. I think if it's not the ECU limiting something then perhaps you have such high back pressure already that at around 1.7 bar boost the engine can't flow properly.
ReplyDeleteHi JD. Thanks again. I was also thinking about that back pressure issue (could be due to my free flow 3" exhaust with 100cpsi cat maybe??). I will look for another tuner who will try to get into this more deeply. Having 1050-1060kg/h of air flow I think I should easily make 360HP, isn't??
ReplyDeleteHello Wilq, a 3" exhaust should be fine for your power level. Even a free flow 2.5" system would work but that small size do start to build a lot of back pressure at higher hp but you can still push almost 400hp with that. Yes you should be getting around 360hp with that airflow and with a really good tune you could see 370hp even.
ReplyDeleteHI. Thanks JD. Regarding max air flow - if I have had 1060kg/h which is 38.9lb/min at 1.78bar, is it possible to calculate more less MAF rate at 2 bars of boost?
ReplyDeleteHello Wilq, it would depend on how efficient the compressor is at that pressure ratio. Chances are you would still have the same airflow at higher boost pressures. But if we assume you are in a good efficient place in the compressor map right now, you could probably add 10% to the airflow with higher boost. However without knowing how the compressor map looks it's really hard to calculate.
ReplyDeleteNavara D40 171 hp
ReplyDeleteHow much boost can I run with free flowing exhaust and free flow filter
Hello Navara d40, you can push the boost pressure up to around 2 bar / 29 psi boost and get around 200hp. However you would need to do a remap to get the best results. Also you would need to make sure you have a good intercooler.
ReplyDeleteThe Navara already run up to 20 psi with stock boost so it is already running fairly high boost and if the intercooler can't cool the air enough any additional boost added would not make any more power.
Will the map read the boost in order to deliver the right fuel?
DeleteHello Navara d40, if you don't do a remap the only way to know for sure is to have an air fuel gauge installed like the AEM’s X-Series Wideband. I can't find what the max pressure the ecu or map sensor is able to read in stock form. But because it is already shown by others that stock peak is around 20 psi it could mean it's a 2 or 2.5 bar map sensor or simply that is where the map ends and the stock ecu will start to reduce power.
ReplyDeleteHi JD
ReplyDeleteI installed gt2056v hybrid turbo along with bigger fmic, egr deleted, turbo back 2.5 exhaust system with 200cel cat, euro 3 injectors (185hp version), new vacuum hoses, k&n intake in my 2005 volvo s60 2.4d5. Next week I'm taking my car for a final remap. Any idę how much power can I expect with this mods?
Hello, it's going to depend on the boost you are willing to run. The stock 3 bar map sensor would limit you to around 2 bar / 29 psi boost max. So you can't really go above 240hp unless you do a remap with another map sensor. However if you want to stay with a more moderate tune 200hp should not be any problems with a good tune and around 1.6 bar / 23 psi boost.
ReplyDeleteHI JD, I HAVE A POLO 1.4TDI RUNNING AT 1.1BAR BOOST WITH STOCK GT1547 WASTEGATED TURBO. IM THINKING OF GT2056 TURBO UPGRADE OR ANY GOOD ADVICE ON THE BEST SUITABLE TURBO TO FIT WITHOUT TOO MUCH HUSSLE. ANY IDEAS ON HOW MUCH POWER I CAN EXPECT.
ReplyDeleteHello, it might be difficult because I think on some versions the stock 1.4tdi turbo have a combined turbine/exhaust manifold. And if that's the case you won't be able to only upgrade the turbo to a bigger one unless you make a custom manifold or find a manifold that would work. Either way if you do get a bigger turbo fitted you would still only be able to run around 110hp / 250nm max before the clutch starts to slip. So if you want to make a bit more power than the GT1547 turbo but keep the stock clutch you should instead consider the GT1749v turbocharger.
ReplyDeleteHi, I hope you can help.
ReplyDeleteI have a Nissan D22 Navara with the YD25 engine (96kw) and am looking to upgrade my turbo (RHF4). I am looking at this or a TD04HL-15T #6 (A/R 0.41) off a SAAB 9-3. Fabricating a new manifold is not a problem. I still want something that spools fast for everyday driving. Which do you think will be the better option?
Thanks you
Hello Chris, the RHF4 turbo is already a very good match for the YD25 engine, however it can't give you much more power. The TD04HL-15T should give you around 140kw / 200hp however without the variable vane turbine housing you would sacrifice some spool. The GT1749V does have variable vanes however it's comparable to the RHF4 turbo. If you want some more power and still have the help of variable vanes for spool you might want to look at the GT2052v VNT turbo.
ReplyDeleteHi JD, thank you for the reply.
DeleteAround 200hp is the aim so that would be great. My fear also is having it start spooling way to late, I've gotten the RHF4 to start at around 1700RPM. At around what RPM do you think the TD04 will start?
The problem I'm having with the Garrett vs the MHI is the cost factor, locally anything with the Garrett badge is about 4x more expensive than anything ells.
Thanks
Chris
Hello Chris, you should start to see some boost around 2000rpm but because it's lacking VNT, it's going to be a bit slow to build boost and it might take to 3000rpm before you get full boost.
ReplyDelete100% and thank you, I appreciate all your input
ReplyDeleteis the "compressor map" graph the same for the gtb 20/59 of the Alfa Romeo 159 2.4mjt 210hp?
ReplyDeleteHello, I cant say for sure if the compressor maps are the same, there is not enough info. If you are looking for some more power you could go with a hybrid turbo, something like this - https://muchboost.com/product/2-4-jtdm-hybrid-turbo-upgrade-alfa-romeo-159-brera-spider-fiat-croma-ii/
ReplyDeleteHello. I have a toyota hilux non turbo with 5l engine which is 3 litre. Is the gt2056 the best option as in the specs it says displacement from 1.4l to 2.0 litre
ReplyDeleteHello, the issue with the older Hilux non turbo 5L engines are they don't like much boost to start with. Probably due to the pre combustion chambers they have making them run very hot once you start adding boost. So if that's the case and you want the engine to last you should stay at around 7 psi / 0.5bar boost. The GT2056 would work but you could go even smaller with a GT1548 turbo if you want to play it safe and only want more low end power.
ReplyDelete