The Ball Bearing GT2860R turbo (base Garrett P/N 707160-5) assembly with T25 style turbine inlet. Comes with internally wastegated style T25 turbine housing that is unique and same as Skyline style (tapped turbine inlet holes, unique turbine discharge pattern, and low profile housing neck) and Skyline style compressor housing with 2 bolt inlet and 2 bolt outlet.
Includes wastegate actuator bracket and actuator from the factory (also unique to this turbo).
If we look at where in the compressor map the GT2860R turbocharger flows the best we see that it's in the 1 - 1.5 bar boost range. This makes the GT2860R a good choice for twin turbo applications like the Nissan Skyline because you will get a solid 600 + HP with them working together. And because it's a T25 flage turbo it will bolt up right away to you're existing manifold if you are just looking for an upgrade.
The GT2860R alone will work well all the way down to 250 HP and will give you 360 HP if needed. The recommended engine sizes for the GT2860R turbocharger are 1800cc to 3000cc.
Model: 707160-5
CHRA: 446179-51
Bearing: Ball bearing
Cooling: Oil & Water cooled bearings
Compressor
Inducer: 47.2 mm
Exducer: 60.1 mm
Trim: 62
A/R 0.60
Turbine
Wheel: 53.9 mm
Trim: 76
A/R: 0.64
Wastegated
Turbine Flange: T25
Turbine outlet: Unique "compact" 5-bolt pattern
Turbine Housing Options (Same options as for the GT2859R turbo)
Part Number: 430609-230
A/R: 0.64
Wastegated
Part Number: 430609-231
A/R: 0.86
Wastegated
Model: 707160-5
CHRA: 446179-51
Bearing: Ball bearing
Cooling: Oil & Water cooled bearings
Compressor
Inducer: 47.2 mm
Exducer: 60.1 mm
Trim: 62
A/R 0.60
Turbine
Wheel: 53.9 mm
Trim: 76
A/R: 0.64
Wastegated
Turbine Flange: T25
Turbine outlet: Unique "compact" 5-bolt pattern
Turbine Housing Options (Same options as for the GT2859R turbo)
Part Number: 430609-230
A/R: 0.64
Wastegated
Part Number: 430609-231
A/R: 0.86
Wastegated
Now if you look at the dimensions of the you will see that the turbine options that Garrett and have are the same as for the GT2854R turbocharger. Also like I said above that the turbine outlet flange have a unique compact design to it (same as the GT2859R), so it will not work with the other GT25R flanges or other traditional T25 5-bolt flanges. So an special downpipe flage is needed, that use the Nissan Skyline bolt pattern.
Oil inlet 0.4375IN - 24 Thread for 6.35 Tube Inverted flare connection PER SEA J512 Oil inlet
Oil outlet 2 x M8x1.25 13.5 oil outlet
Water connections thread M14x1.50
Hello, I'm looking into putting Turbo on my Yamaha Warrior, muscle bike. I would love to pick your brain and develop some networking.
ReplyDeleteHi Greg, you can drop me a mail at turbochargerspecs@rocketmail.com if you like. The Yamaha have a pretty big engine 1600-1700cc so spooling a turbo wont be much of a problem. However I would try and stick to a 200hp turbo like Garrett GT20 because you can't rev you're engine that high. So because this a smaller turbo is in favor. If you run E85 fuel (ethanol) you can run around 1 bar boost without a intercooler. But if you can't find E85 in you're area then a small intercooler fitted will let you run the boost you want no problem. If not you will be limited to how much boost you can run because the inlet temperature will become to high and risk the engine. Still you're engine if I'm right have around 8.3:1 compression so you can probably run 0,7 bar boost without a problem as the engine is. I would guess that you can get around 150hp without to much work, just fitting the turbo. You would need to have the carb under pressure though.
ReplyDeleteHy I have nissan ca18det engine and this gt2860r 707160-5 ... the problem is .. Full boost 1bar is on 4000 rpm... turbo have a big lag...
ReplyDeleteThan you should go for the gt2860r rather then the rs, the r makes slightly less power but spools up quicker, i believe around 3000-3500 is where it kicks in however the gt28r doesnt hold the power down till redline i believe. Im also going for the gt2860r rather than the rs
DeleteHello there, not knowing your engine specs I can only guess. But with this GT28 turbocharger you should have 1 bar boost pressure at 3000 rpm. Could even get it a bit sooner than that if the engine gets tuned right. One thing I would start out with to troubleshoot is the wastegate. If you have a lot of backpressure in the turbo mainfold it could force the actuator spring controlling the wastegate open and you get a slow spool from the turbo. You can test and see if this is happening by adding another spring to the wategate like in this picture link below. If you get an improvement with the extra spring then all you need to do then is to fit a bigger actuator to solve the problems. Hope this helps.
ReplyDeletehttp://2.bp.blogspot.com/-GBGp1ePKGsA/VL6oHB5f3NI/AAAAAAAAC7Q/x1y2suvszPM/s1600/Wastegate%2BActuator%2BSpring%2BTurbo%2BTroubleshooting%2BBoost%2BPressure%2BHow%2BTo%2Bwww.TurbochargerSpecs.blogspot.com.jpg
I have a 2007 mini cooper s, 1.6L engine I'm looking something between 300 and 350Hp, what size or what type of turbo will be the best for my mini? Any recommendations?
ReplyDeleteI'm confused since my engine size is only 1.6L and these turbos seems to be too big for my engine size. I'm afraid that the engine might not be able to spool it. As I said any recommendations or suggestions will be apriciated.
ReplyDeleteHello, to reply to you both about the 1.6L engines. It all depends on what power you are looking to make. If you say need 300 hp then this GT2860R turbocharger will give you that and you can push this turbocharger even further to about 350hp.
ReplyDeleteIt will spool up on both you're 1.6L engines, but how soon will depend on the overall engine setup when completed. So if the setup is not optimal, then the engine will only come to life and start to pull hard at around 4500 rpm. But if you have done some engine work, with a nice exhaust it could be 3500 rpm instead. It all depends. But this turbo being ball bearing really helps.
If you are unsure and feel like the GT28 turbocharger range is a bit too big for the engine and your power goals then there is always the GT25 and even GT22 turbocharger range that you could look into. A little less top end power but you also get a nice spooling turbocharger and a fun drive. Trust me 300hp will put a smile on your face every time you go for a drive.
Hi, I just purchased a brand new GT28 60 R to replace my GT25 54 R This is fitted to a Honda Blackbird 1100cc Injected engine fitted on a Hill climb car. The engine is totally stock with stock 11:1 cr a really nice Exhaust manifold , 650cc siemens injectors and a fully programable ECU. question what is the boost pressure I should run ? the car is fitted with an intercooler and is run on racing fuel. What is the opening psi of the wastgate ? the engine revs easily up to 11500rpm, what power should i expect. I went for a bigger turbo because power would drop off at 220 WHP with the GT25 54. Thanks look forward to your views.
ReplyDeleteHello David, it's hard to say how much boost you could run with the stock 11:1 compression ratio even on race gas to be on the safe side. But if your running something like VP's C16 Race Fuel then you should be ok to even max out the tubo with a good tune.
ReplyDeleteIf we compare the GT2860r and GT2554 turbochargers then you should see around +50 hp with the same boost pressures. I would expect to see 250whp around 1 bar boost and with 1.5bar boost close to 300hp.
The GT2860r wastegate spring usually open around 10-15psi so if you don't bleed the air then 250whp is around what you can expect without any other changes to your current setup.
Hi,could an 1.4 displacement to spool this turbo?first I have a gt2554r and was very good,but broken,and after I put a gt2871 and makes max 0.5 bar.
ReplyDeleteThx
Hi 5supercinque, what power are you trying to make? The Garrett GT2871R Turbocharger is the biggest GT28 turbo and have a wide 270 - 475 hp range suitable for 1.8L - 3.0L engines. The GT2860R is a good upgrade but it will spool a bit slower than your smaller GT2554R turbo.
ReplyDeleteThx for answer.About 250hp,the car is a renault 5 gt turbo 1397 cm,I have a full large exhaust,a pipercam,and a big front intercooler,a head gasket that reduce the cr to 7.5;1 and a rejetted group a carburettor
ReplyDeleteBut the problem is that I don t find a gt2554 second hand,I found a gt2860.
With gt2871 full boost at over 6000rpm,and engine up just max 7000
With 2860,you think the full boost would come at 4000rpm?it would be good at 4000rpm cause is not a daily drive car,the car weight just 780kg
ReplyDeleteThx
I have a hardly used GT 25 54 for sale.
ReplyDeleteHi 5supercinque, with 1400cc, low comp and big cams you usually have a hard time spooling a big turbo. I would guess around 4.5-5000rpm. If you can control the ignition curve you could get better response and help the turbo spool. But if you already know at what rpm the cams start to give power and where max torque is without a turbo, then you can expect the turbo to start to give boost around that rpm range.
ReplyDeleteI have a 1990 r32 gtr, no clue what mods it has other than what I can see. Apex intakes, his intercooler pipe, arc intercooler...the engine itself looks stock. The boost restrictor has been removed from the original pipe to the boost controller. It pulls real good but still maxes out about .7bar according to the gauge in the car. Would upgrading the turbos to 2 gt2860's help out tremendously or be about the same power output?
ReplyDeleteHello Brandon, the stock gtr r32 turbos use ceramic turbine wheels and they can fail if you start to go above 1 bar boost. So it is common to replace these. But stock turbos are still good for around 300whp at around 1 bar boost. Now there are upgrade options like replacing the wheels with non-ceramic ones so you can push higher boost but consider around 4-450hp max what a set of upgraded stock turbos can do.
ReplyDeleteNow if you instead go with a set of Garrett GT2860R turbos you should be good for 600hp so there is a pretty big difference in power.
If you are new to the skylines and unsure if there are boost issues you can read how to do diagnostic checks on the ECU and faulty sensors and what to look out for here
http://www.skyline.se/dokument/the_sky_is_the_limit.pdf
Hi! I have R33 GTR RB26DETT Everything internal has been replaced except the Crankshaft. Manifold, downpipe and 3" exhaust is by tomei. I'm looking for turbo that will spool early like the OEM and can give me at least 450whp. Thanks for any input.
ReplyDeleteHello, if you have some money to spend and like to go with a single turbo setup then the new Garrett G25-500 turbocharger would be the best option for spool. You should have good spool and get at least 400-450whp at around 2 bar boost pressure.
ReplyDeleteThese are fairly new turbochargers so there is still more testing needed to see how far these smaller turbos can be pushed power wise. For a solid 500whp you should consider the bigger G25-660 turbocharger however it might be a bit more laggy setup.
Hi JD, thanks for putting up the info.
ReplyDeleteI have a R33 GTR and would like to retain the twin turbo setup.
The car has full intercooler piping and a turbo back exhaust.
The stock turbo (260000km) is giving up soon, since it's blowing white smoke occasionally.
My question is what is the spool up time difference between the 707160-5 and 707160-7?
I am looking for 400-450ps with quick spool up. I know the -7s' is the answer. But I got a very good offer on the -5s, wonder is it worth to compromise.
Thanks advance!
Hello, if you get a good deal on the 707160-5 I would go for it. The 44mm compressor wheel on the 707160-7 turbo is a bit lighter vs the 47mm compressor wheel on the 707160-5 turbo. So that extra mass does make the 47mm 707160-5 turbo spool a bit slower.
ReplyDeleteHowever on bigger engines like the 6 cylinder Skyline you are not going to feel that much difference anyway. What might hurt spool more is if you change to high lift/duration cams etc like many people do that use the smaller turbos to gain some more power.
But the good thing with the 707160-5 turbos is they are capable of running much higher +2bar/30psi boost to compensate for the lack of cylinder head flow, so that will even things out also.
Thanks for the prompt reply!
ReplyDelete"However on bigger engines like the 6 cylinder Skyline you are not going to feel that much difference anyway."
Is this base on all 6 cylinder spooling 1 707160-5?
But the stock setup is running the twin turbo in parallel, 3 cylinder / turbo, 1300cc / turbo.
Isn't the spool up time difference will be quite pronounce in this setup?
Hello, there's a few different setups done on turbo 6 cylinder engines like blocking off one turbo for better spool. But if we are talking about a normal stock twin turbo setup, then the difference of running two -7s or -5s are small when it comes to spool. I think what most people feel as lag with the bigger turbos is they spool a bit slower and also comes on stronger, so even though the spool is similar it makes them feel a bit more "laggy" when driving.
ReplyDeleteWith the -7s you might have full boost around 4000rpm, but with the -5s you might have full boost at 4300-4500rpm depending on cams etc. However if you are worried about 3-500rpm later spool in the worst case and think that's a big deal, then of course the smaller turbos would be better. But also on the other hand you might be missing out on around 100hp at peak boost with the same turbos. So for me it's a good compromise going with the -5 turbos if you can get a good deal on them.
Got it! And thank-you for your patience on explaining.
ReplyDelete