tag:blogger.com,1999:blog-6670820875534775743.post1586766942584692552..comments2024-03-24T23:15:17.442+02:00Comments on Turbocharger Specs: Garrett GT15 – GT1544 – Both 150 HP TurbosJDhttp://www.blogger.com/profile/17735949883966509795noreply@blogger.comBlogger40125tag:blogger.com,1999:blog-6670820875534775743.post-28049061324185533142020-12-17T01:40:41.273+02:002020-12-17T01:40:41.273+02:00Thanks JD. Happy Holidays, Jeff Thanks JD. Happy Holidays, Jeff Jeffhttps://www.blogger.com/profile/12627174642460911367noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-68431195347374380822020-12-04T19:24:24.746+02:002020-12-04T19:24:24.746+02:00Hello Jeff, with the GT1544v fitted you should exp...Hello Jeff, with the GT1544v fitted you should expect at least 130 ft-lbs torque even with low boost. And that torque should come in very quick at low rpm as the turbo starts building boost.<br /><br />Of course you would need to run a bit higher boost with the GT1544v around 1 bar / 15 psi if you want to reach 140hp, that in turn will also increase the torque a bit more. In that case you should probably end up with closer to 150 ft-lbs.JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-72400940885715430382020-12-04T03:48:55.944+02:002020-12-04T03:48:55.944+02:00I meant VNT. I meant VNT. Jeffhttps://www.blogger.com/profile/12627174642460911367noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-83820723523447163722020-12-04T03:46:46.088+02:002020-12-04T03:46:46.088+02:00The GT1544v is a NVT and I am thinking it should s...The GT1544v is a NVT and I am thinking it should spool up close to idle. Plus I will thermally barrior coat with ceramic the exhaust housing and manifold for quicker spool. How much torque gain would the GT1544v increase ? <br />140 hp is fine as long as it is low in rpm range. Thanks, Jeff<br />Jeffhttps://www.blogger.com/profile/12627174642460911367noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-33467383332654419212020-12-03T23:32:01.186+02:002020-12-03T23:32:01.186+02:00Hello Jeff, it looks like the GT1544v turbocharger...Hello Jeff, it looks like the GT1544v turbocharger use a smaller 31mm compressor wheel vs the "non v" Garret GT1544 turbo that use a slightly bigger 32.9mm compressor wheel.<br /><br />Basically at these low 6-8 psi boost pressures, the GT1544 and GT1544v size turbos won't really flow enough air for you to see much gain in power unless you increase the boost pressure to around 1 bar / 15 psi boost. You would still make around 140hp, however if you need to stay at low boost pressures you should consider the GT1548.<br /><br />With the bigger GT1548 turbocharger or a similar one that use a 37.2 mm compressor wheel, you can expect to get around 140-155 hp with 0.5 bar / 6-8 psi boost. And you could also get around 170hp with 0.7 bar / 10 psi boost with the same turbo.<br /><br />If you however want the fastest spool, you can look at the GT1241 turbo. Like the GT1544 you would also need to run a bit higher boost around 0.7 bar / 10 psi boost but you should make around 130hp with that turbo.JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-50610925248171575222020-12-03T01:26:43.921+02:002020-12-03T01:26:43.921+02:00I want to boost at ery low rpm on a BMW 1.6L car e...I want to boost at ery low rpm on a BMW 1.6L car engine for torque (1967), Stock is 100hp, 103 ftlbs. I was thinking GT1544v at 6-8 psi max. I will make my own exhaust manifold for it. Is the GT1544v a good match ?<br />Thanks, Jeff Jeffhttps://www.blogger.com/profile/12627174642460911367noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-47789706997247126872020-09-12T05:45:30.328+03:002020-09-12T05:45:30.328+03:00Awesome! Thank you! I think you answered my questi...Awesome! Thank you! I think you answered my question quite succinctly. Anonymoushttps://www.blogger.com/profile/05555942393182986379noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-8122718812366055102020-09-10T21:50:46.256+03:002020-09-10T21:50:46.256+03:00Hello, if you stay around wastegate pressure on th...Hello, if you stay around wastegate pressure on the GT1241 around 0.7 bar / 10 psi boost you should be around 130hp maybe 135hp and have a fast spooling setup. But indeed you might start to choke the turbo at higher rpm. With a very small turbine housing one way around this would be to use larger diameter or longer exhaust pipes going to the turbo.<br /><br />This will slow down the exhaust gases and reduce the temps/pressure a bit before the turbine and helps a small turbine housing to flow a bit more at high rpms. Of course this will also hurt spool times a bit, but if you are a good fabricator you can experiment with some different lengths and pipe sizes to find the best compromise.<br /><br />However if you don't have a lot of room to locate the turbo on the bike you might want to consider the GT1548 turbo also, it's got a bigger turbine but the compressor supports more air flow at lower pressures so you would be able to get a solid 135hp with around 0.5 bar / 7 psi boost. With this turbo you could instead try the opposite and use smaller size pipes or short lengths to help the bigger turbine spool faster. But I don't think it could match the GT12 for spool times.JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-16170979050965365932020-09-10T07:16:19.915+03:002020-09-10T07:16:19.915+03:00Thank you for the information! I am looking to boo...Thank you for the information! I am looking to boost a 1700cc Yamaha Warrior V twin. About 90hp stock. It revs to 5000 rpm. Like a harley, but a little better flow up top. Many people boost these as they can put 200hp down with only valvesprings and supporting mods. I don't want all that. I'm looking for a solid 135 hp, non intercooled, wastegate and bov only setup. At under 1 bar of boost the stock fuel pump and injectors are sufficient. My concern is getting the absolute best turbo for a powercruiser. Boost at 2000rpm or under and not choking out at 5,000 rpm. I was thinking I could use the gt15 with the .33AR exhaust and fit my intended torque area. Essentially I don't want to lose the V twin torque band. It is such a pleasure to ride. But I want to add to it. There are two turbo kits for this bike. Each over $5500. Both use stock pumps and injectors. I am a good fabricator and see the possibilities for a simple, cheap, boost kit for these if I can get mine just right. I saw the gt12 and wondered if that would be better to get the low boost while not choking out up high, but then I read all of this and am not sure which direction to look. Do I actually want to get a higher AR number with a smaller turbo? I'd like it to be able to run flat out for a minute straight without stupid egt's. I'd appreciate the feedbackAnonymoushttps://www.blogger.com/profile/05555942393182986379noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-26985902240013119612020-05-17T05:13:03.501+03:002020-05-17T05:13:03.501+03:00Hello toubaill, the GT1544 should work fine, but y...Hello toubaill, the GT1544 should work fine, but you could also use the GT1241 if you like.JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-64238496229378705442020-05-14T08:43:31.363+03:002020-05-14T08:43:31.363+03:00hello i have a kawasaki gpz 750 from 1986
the turb...hello i have a kawasaki gpz 750 from 1986<br />the turbo is dead the gt 15 would do the trick?<br />Thank youtoubaillhttps://www.blogger.com/profile/01992862706694794443noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-29519842620834896042020-04-30T23:26:12.914+03:002020-04-30T23:26:12.914+03:00Hello, you can do a 12mm head upgrade for the VP37...Hello, you can do a 12mm head upgrade for the VP37 pumps. Ask if the VP34 use the same ECU and drive, if true it might be easier for you to switch to a VP37 instead.<br /><br />There's a few different versions of the Almera turbo, but the compressor wheel and turbine size should all be similar. It's mostly the flanges that are different.<br /><br />However I would try and get a GT1548 turbo with a straight wastegate fitted. That way if you need to change the wastegate in the future it will be much more simple to find a universal wastegate actuator replacement.<br /><br />Like this cheap aliexpress straight universal actuator with different springs.<br />https://ae01.alicdn.com/kf/HTB1JdBNayLrK1Rjy1zdq6ynnpXaJ.jpg<br /><br />Instead you might end up having to get a more expensive wastegate like this if you can't bend the arm or bracket to make it fit.<br />https://www.tiperformance.com.au/wp-content/uploads/2018/03/IWG_STI_02.jpg<br />JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-79152106389147173092020-04-30T07:28:50.302+03:002020-04-30T07:28:50.302+03:00Big thanks once again. I have found that same VE p...Big thanks once again. I have found that same VE pump info too, will have to verify more on the possible similarities to the VP pump.<br /><br />It is a semi electronic pump, driven by a cogwheel and chain mechanically, with a 9mm piston that pissibly can be upgraded to a 10mm piston, on which there is like no info. So thanks fir that research. I will eventually find a guy who knows what's possible for sure. Maybe on a VAG fansite...<br /><br />Thx for that wastegate info. I am gonna see more lights come on here on how boost is made exactly, i mean the physics of it.<br />The 1548 i can find here is always grom just a Nissan Almera Tino. That is a 2.2 tdi 5-in-line engine.<br /><br />You got any specs on that wastegate or any more specific info on these 1548's somewhere that might not be up here?<br /><br />Example of the only type i find online: 144114U110 GT1548, 7053087 TURBO TURBOCHARGER NISSAN ALMERA TINO 2002 2.2L EIS00722247<br /><br />Are all specs up here already? If not i am happy to receive an email too with some info.<br /><br />Biggest of thanks again... Anonymoushttps://www.blogger.com/profile/12625278510228737863noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-29835232243063568542020-04-30T01:32:51.134+03:002020-04-30T01:32:51.134+03:00Hello, one of the most common and simple ways to a...Hello, one of the most common and simple ways to adjust boost pressure is to bleed some of the air going to the wastegate. Either with a boost controller as seen here <br />https://www.turbosmart.com/wp-content/uploads/2018/10/5483.jpeg <br /><br />Or use a simple t-piece on the wastegate hose to bleed some of the air that way. However that also makes a small boost leak in the system, so the turbo will also spool up a bit slower.<br /><br />The other way to adjust boost that also gets faster spool times is to tighten and shorten the wastegate arm. This way takes some trial and error to get the correct boost levels, but you have no leaks in the system. And the max boost pressure is only determined by how stiff the wastegate spring inside the wastegate is rated for before the exhaust pressure starts to push the wastegate open.<br /><br />If you are still losing boost pressure, then you can look into getting a high boost wastegate fitted that have an even stiffer spring installed to keep the wategate shut.<br /><br />I'm not sure about the VP34 Bosch pump but you can check if these are similar<br /><br />Adjusting Fuel Enrichment Screw VW Bosch VE injection pumps<br />https://www.youtube.com/watch?v=r2_DHKlEDv0<br />VE Pump Adjustment<br />https://www.tstproducts.com/vepumpadjustment.aspx<br /><br />As for a worn turbo, because it's a journal bearing turbo, and if it's been sitting a while without oil and it's cold it could feel slow to spin. But the turbo should be able to spin around a few times by hand if everything is ok. If you can start the car and let the oil heat up, the turbine / compressor wheel should be seen spinning at idle. Otherwise take off the inlet on the turbo and look if the compressor wheel is rubbing on the inside. If it does, you need to replace the turbo journal bearings.<br />JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-46236028306785935062020-04-29T23:09:56.045+03:002020-04-29T23:09:56.045+03:00Hey bro ;)
I have advanced the spending of valuab...Hey bro ;)<br /><br />I have advanced the spending of valuable cash on the renewal of the abovve discussed E36 touring project chassis.<br /><br />Further i still am now getting into more detailed questions as this is my first TD project/ride.<br /><br />I hope you have the excitement to explain, or to link to me maybe webistes or other where this is detailed.<br /><br />Now: i see this 1548 has a wastegate. this is a noob question for sure. So is it a necessity to change this wastegate in order to control boost, or make adjustments to the original one so that this changes max boost?<br /><br />I have still question on the VP34 Bosch fuel injection pump, seems to be a special something type of pump.<br /><br />I noticed that the exhaust wheel of the original turbo has some resistance when trying to spin it at the touch, after i disconnected the exhaust now to start the clutch swap here. is this an indication of something being too worn or too dirty? or is this normal on an old diesel? ;p<br /><br />Next to this i am hopeful. I think i will let the old 1544 sit for the technical checkup and then i might put that 1548 on.<br />Anonymoushttps://www.blogger.com/profile/13594888917953798075noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-16346435855692007242020-04-24T12:30:11.182+03:002020-04-24T12:30:11.182+03:00Great info thanks a lot! Great info thanks a lot! Anonymoushttps://www.blogger.com/profile/12625278510228737863noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-19260852412082120932020-04-24T04:25:14.460+03:002020-04-24T04:25:14.460+03:00Hello, the GT1548 should spool up almost as fast a...Hello, the GT1548 should spool up almost as fast as the stock bmw 318tds turbo. But because the turbo is also building higher boost over stock pressures it's also going to take a little bit more time to get to full boost. <br /><br />You can reduce this time however if you make stuff like boost hoses shorter or a bit smaller if possible, and also not use any bigger intercooler than necessary. You are reducing the space in the system so it takes a shorter time to fill up with boost.<br /><br />Also you want as little restriction in the exhaust and on the compressor side as possible and a de-cat downpipe from the turbo will help with that, along with a good flowing air filter.<br /><br />If you can modify the pump to get some more Diesel in you want there to be some black smoke to help the turbo start to spool, but you want it to be a clean burn and no black smoke after that on boost to make the most power and torque.<br /><br />As for torque you are probably going to get close to 300nm with the stock setup if you run higher boost with a pump upgrade. And the engine should handle that just fine.<br /><br />The rods and pistons should handle the extra torque the GT1548 turbo gives, but I don't know how good the stock block casting is on the 318tds engines. If it is weak by design worst case would be cracks in the cylinder walls if you push it too far. But you should ask someone who works on these engines how far they can go to be on the safe side.<br />JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-75852550149234891242020-04-24T01:44:46.932+03:002020-04-24T01:44:46.932+03:00Thanks for this detailed answering!
Now, diesels a...Thanks for this detailed answering!<br />Now, diesels are generally low-rev torque focused, so as a petrolhead i should rather ask you now to also suggest me something in that direction. Don't wanna blow up the engine too soon, so that 1548 sounds good, yet what is a good setup to make it get more low end power without endagering the internals? Like quick-spool enough to make it a fast machine below 3000 for exemple... Thanks a lot ;) Anonymoushttps://www.blogger.com/profile/12625278510228737863noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-69321809501028223172020-04-23T23:51:44.046+03:002020-04-23T23:51:44.046+03:00Hello, the 318tds with the stock Garrett GT1544 tu...Hello, the 318tds with the stock Garrett GT1544 turbo should be able to make around 120hp with 1.5 bar / 22 psi boost and a good intercooler. And of course you would need the pump, ecu upgraded. However to make 150hp you would need around 1.8 bar / 26 psi boost, but the GT1544 cannot flow that much air at high boost.<br /><br />The best option for 150hp would be to go with the GT1548 turbo. You would be outside the compressor map at 1.8 bar / 26 psi boost but it should be ok if you have a good intercooler to keep the air temps down. You would need to make an adapter for the BMW manifold to the T25 flange on the GT1548 turbo, and also make a new downpipe or flange for the exhaust.<br />JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-32655907360032506962020-04-23T18:31:10.779+03:002020-04-23T18:31:10.779+03:00Hi! I just bought a 318tds from BMW. It has the 15...Hi! I just bought a 318tds from BMW. It has the 1544 turbo for an original hp of 90. I am wondering what will fit the original flange, and if not, i i would wish to achieve 150 horses, you may choose at the wheel or not, what should/can i fit?<br /><br />I take into consideration ofcourse fuel pump ugrades and ecu changes. <br /><br />Thanks ahead for any info! Anonymoushttps://www.blogger.com/profile/12625278510228737863noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-27712633387315048952020-04-23T07:23:16.427+03:002020-04-23T07:23:16.427+03:00Hello Superhamman88, I'm not sure how good the...Hello Superhamman88, I'm not sure how good the stock cylinder head is and how much hp you gain from a port and polish on the stock Suzuki Cappuccino engine. But if you can get another 20hp from the port job then you would need around 1.1 bar / 16 psi boost pressure to get to 120hp. If that's the case then the GT1241 turbo would be the best option.<br /><br />However if you can't get much more hp from the stock engine you are going to have to compensate with higher boost pressures to get to 120hp. If that's the case then the GT1544 turbo would be the better option as you could run up to 1.6 bar / 23 psi and the turbo would still be efficient and able to flow 120hp.<br /><br />Another option if have enough room in the engine bay would be to keep the stock turbo and run the GT1241 turbo in a compound turbo setup. That way the stock turbo would run 0.8 bar / 11 psi and give you good spool. And then the GT1241 turbo would feed the stock turbo and boost another 0.8 bar / 11 psi to give a combined 130hp or maybe even a little bit more power..<br /><br />JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-38586904668318827982020-04-23T00:29:49.030+03:002020-04-23T00:29:49.030+03:00I'm putting together my suzuki cappuccino and ...I'm putting together my suzuki cappuccino and am looking at what turbo to put on. I have ported and polished the head and will make a custom exhaust manifold. I am looking at making around 120hp. Would the gt12 or gt15 be a better option? Superhamman88https://www.blogger.com/profile/04398294025963365638noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-28164149083953571752019-12-25T07:00:38.378+02:002019-12-25T07:00:38.378+02:00Hello, considering this GT1544 turbo is most effic...Hello, considering this GT1544 turbo is most efficient at around 100Hp, it would be a bit of an restriction on your engine. It will put you on the far right side of the compressor map. At around 0.7 bar boost you could get around 130hp, however you would need to go over 1 bar boost to get close to 140hp and maybe get 150hp with a good intercooler.<br /><br />A much better option for your engine would be the GT1548 turbo instead. You should have no problem getting 150hp with around 0.7 bar boost and you could get close to 180hp with 1 bar boost and a good setup.<br /><br />I don't think you need to worry about the turbo being a restriction to the exhaust unless you want more top end power. If you think that will be a problem then the GT2052 turbocharger would be an option. As it's got a 47 mm turbine housing vs the 41 mm housing the GT1548 uses.JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-22391927034428725692019-12-24T23:54:38.933+02:002019-12-24T23:54:38.933+02:00JD, what about turbo being a restriction?
I'm ...JD, what about turbo being a restriction?<br />I'm a bit worried about that now. As my CBX makes about 90Hp stock, but now I have lowered compression a bit. What power does this turbo actually make? And could it restrict exhaust flow?<br />I'm hoping to hit 1 Bar without detonation.Anonymoushttps://www.blogger.com/profile/05511577223920727452noreply@blogger.comtag:blogger.com,1999:blog-6670820875534775743.post-18419311947380708942019-09-12T00:55:41.398+03:002019-09-12T00:55:41.398+03:00Hello, anything over 1.5 bar / 22 psi boost pressu...Hello, anything over 1.5 bar / 22 psi boost pressure and it's going to lose efficiency. You can still go a bit higher boost but you would need a good intercooler to keep the inlet temps down. <br /><br />You can run old style Diesel turbochargers like Holset without variable vanes on petrol engines without problems. <br /><br />However if it's the variable vane type Diesel turbos then it's very important that the exhaust temperatures never goes above 850°C because that would start to destroy the variable vanes. There are new BorgWarner VGT turbos that can take exhaust temps up to 900°C however on a petrol engine you are looking at 1000°C exhaust temps so it's always going to be a risk of destroying the turbo.<br /><br />That said, on a motorcycle or street car you are not going to be on boost and generating high exhaust temperatures for extended periods of time so it would be less likely to hurt a variable vane type Diesel turbo.JDhttps://www.blogger.com/profile/17735949883966509795noreply@blogger.com