Boosted Esky

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About Boosted Esky

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  1. Boosted Esky

    That's what I've already got on a Ford SOHC engine. It's a GTX2860R GenII in a T28 0.86 with the flapper welded shut, 38mm external gate. It's choking at 300+whp so looking for a bigger turbine.
  2. Just wondering which version of the GT3071R turbine would perform best on a 4cyl 2L engine. The full size 60mm, 84 trim. Or the cropped 56.5mm 90trim aka GT2835 aka GT3071R-WG. *PLEASE NOTE * the CHRA will be fitted to a HKS style Mamba turbine housing, not the godawful T28 style housing. Thanks
  3. Mamba make a T25 turbine housing for a full size (60mm) GT30 turbine. I am considering using one to save the expense of getting a new custom T3 steam pipe manifold, EWG, dump pipe made. Can anyone comment on the performance of these? I understand they're a compromise but it looks like the internals of the housing becomes quite large after the flange, you can tell how it's relieved around the stud holes. I'm tight on space so a T2/T3 adapter won't work. Also thinking of using the compact T04B compressor cover (GT2871R cover). Thanks
  4. Boosted Esky

    Only a short run to the intercooler. Intercooler inlet is 2.5"
  5. Boosted Esky

    Wow a lot of replies thanks. There's no AFM and plumb back is angled on the intake so that's all good. I actually just had the car at the drags Wed night and have gain 3 tenths of a second with this new set up so I'm pretty happy with where it's at. BOV is set hard so it doesn't dump all the charge and the 2.5" pipe doesn't seem to affect things too badly now that I've had a good chance to test it. I'm sure though that a 2" pipe would improve the symptom. Cheers
  6. I've recently swapped out a GT2860RS for a GTX2860R Gen2 and had the engine retuned. There's a tiny bit of lag when changing quickly from 3rd to 4th, 4th to 5th. This never happened with the GT. Could it be that the billet wheel has less inertia and therefore slows down more between gears? The other changes made aside from the turbo is a larger 32mm plumb back BOV relocated to the throttle body side of intercooler (old BOV was 25mm and on the turbo side) and the pipe between turbo and intercooler stepped up from 2" to 2.5" . I've noticed if the BOV is set too soft the lag was worse. I have set it fairly hard but the lag persists. Just wanting some advice so I'm not wasting time changing things that don't need to be changed eg: changing the 2.5" IC pipe to 2". I get the feeling this is just a characteristic of the GTX turbo?? Thanks in advance
  7. Are the factory supplied check valves ok to use in a twin pump set up or is it better to use an aftermarket one like Speedflow etc? The twin pump fitting kit I bought is designed to be used with the factory valves but I havebeen told they're rubbish and can cause the pumps to be excessively noisy. Thanks
  8. Boosted Esky

    Thanks
  9. Hi I'm having trouble finding out how much heat these clamps can handle. The only part that could deteriorate is the orings and they are advertised as "high temp" but no exact figures. I'm wanting to use one on the compressor housing outlet which is quite close to the exhaust manifold, about 30mm away. Thanks
  10. Boosted Esky

    The car is a custom build. No AFM. I currently have a Turbosmart Kompact dual port in 25mm but it's on the turbo side of the intercooler and I get a little bit of mid rpm surge. I'm about to upgrade the turbo and go from 300hp 20psi to 350hp 25psi so I'm thinking 32mm Dual Port before the throttle body with a plumb back pipe, running in 50/50 config. I noticed my current valve performed a lot better in 50/50 config (less surge) compared to full plumb back. Another reason I'm leaning towards the dual port is to keep the police happy if I have to pop the bonnet. If I keep the BOV blanking cap in my toolbox it can easily be fitted if it got picked on. The cars build date is 1980, I have read somewhere that atmo vented BOVs are ok for older vehicles but I'm not certain what year that goes back to. Thanks
  11. Hi. Which is the better valve? What are the main differences between them and reasons for preferring one over the other. Thanks
  12. Boosted Esky

    Correction- a standard YB head is good for up to 380whp before porting & cams is needed.
  13. Boosted Esky

    Hi Dale. A YB cosworth head would be ultimate but would've added about 7 to 8K to my build cost. In standard form the YB head doesn't flow that great so porting, bigger valves, better cams etc. The factory brake booster would have to be deleted and bias pedal box installed with remote reserviors etc. The aluminum YB heads are also known for going soft and cost about 3k to harden if a suss one was purchased. The going rate for a standard used YB head in GC is about 3k. I was also keen for a challenge to do something different and it's been a whole lot of fun since having it on the road. PB at the drags is 12.7 114mph so hopefully can get a high 11 with another 40hp. Thanks
  14. Boosted Esky

    Thanks very much Leroy. The engine is fairly well built. ARP bolts throughout, Cosworth YB steel rods and YB pistons. Cometic MLS head gasket. Sounds like I should wind it up
  15. Hi , first time post here. I have a 2.0L 8 valve SOHC motor (pinto) on E85 with 630cc injectors GT2860RS 0.86 turbo External WG (flapper welded shut) Haltech ps1000 making 301whp at 5800rpm 20psi. Power bug has bitten and I'm chasing another 40whp to hopefully crack into 11sec 1/4 mile. Because my hotside is custom it will be costly to change to T3 manifold and Vband dump etc so I've looked at the GTX gen2. It's rated at 475 crank hp, 115hp higher than the GT version. The only difference between the two is the billet compressor wheel and cover and the shaft speeds on compressor map are 35,000rpm higher. Is it foolish to think this could make 340whp? I'm trying to decide on this or GT30 , if the GTX2860R GEN2 can do it I'll stick with it. If anyone can vouch for this turbo making those numbers please chime in . Thanks