Chiefgroover Posted February 5, 2010 Share Posted February 5, 2010 I suppose i have to consider those with 2mm HKS head gaskets, lowered compression, and very flat response off boost, that would make driving hard work, but my off boost performance is very good due to stock C/R, not going too mad with the cams, lighter pistons/rods, very light alloys and a nice mapping job have all contributed to decent sub 4K performance. I changed from 1.00 a/r to 0.81, it helped the lower down spool etc, but not by mass amounts. So......if building a new motor, stock c/r and mild cams have to be the way forward. I would HATE a supra with lowered compression, anyway who needs it here? I have 664bhp with no water inj or low C/R and no det on BP ultimate running 11.8 AFR on boost. Quote Link to comment Share on other sites More sharing options...
sdistc Posted February 5, 2010 Share Posted February 5, 2010 Have I missed something here, the bigger the turbo the more boost it needs to be efficient, no point in running my 76 anything under 1.8 bar:taped: Sorry Dude - I was trying to make the point that if the limiting factor is the octane of pump fuel, then why run a big turbo if you can only use lower boost with decent timing (when it needs higher boost for efficiency), and therefore make no power/torque, or higher boost but no timing (because of detonation risks) and be inefficient with setup. I don't think that anything bigger than a 71 mm (if that!) will be able full timing on proper boost levels on pump fuel. However, I will be testing this theory later this year when I get my 4294 retuned with the new goodies. Quote Link to comment Share on other sites More sharing options...
dude Posted February 5, 2010 Share Posted February 5, 2010 Sorry Dude - I was trying to make the point that if the limiting factor is the octane of pump fuel, then why run a big turbo if you can only use lower boost with decent timing (when it needs higher boost for efficiency), and therefore make no power/torque, or higher boost but no timing (because of detonation risks) and be inefficient with setup. I don't think that anything bigger than a 71 mm (if that!) will be able full timing on proper boost levels on pump fuel. However, I will be testing this theory later this year when I get my 4294 retuned with the new goodies. That makes more sense, but I have no problem running 1.8 bar and good timing on my 76, with a drop of toluene it can go balistic. Quote Link to comment Share on other sites More sharing options...
JamieP Posted February 7, 2010 Author Share Posted February 7, 2010 I remember a while back talking to people about the possibility of running a SC with a turbo. In effect using the SC as the first thrust and somehow using that to get the turbo spooling up behind it. They (cant remember who) seemed to think that the project was a non starter due to development costs etc. Single turbo and supercharger. http://www.youtube.com/watch?v=kxdPNvMuPsE Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted February 7, 2010 Share Posted February 7, 2010 Single turbo and supercharger. http://www.youtube.com/watch?v=kxdPNvMuPsE he needs to seriously re-allign his steering wheel. Quote Link to comment Share on other sites More sharing options...
JamieP Posted February 7, 2010 Author Share Posted February 7, 2010 he needs to seriously re-allign his steering wheel. Check my comment;) Quote Link to comment Share on other sites More sharing options...
Kirk Posted February 7, 2010 Share Posted February 7, 2010 Interesting but is it realy offering any actual benefit at all? Just seems like a normal single to me than whines Check my comment;) Quote Link to comment Share on other sites More sharing options...
Guigsy Posted February 7, 2010 Share Posted February 7, 2010 sounds wierd to drive that lol Quote Link to comment Share on other sites More sharing options...
JamieP Posted February 7, 2010 Author Share Posted February 7, 2010 Interesting but is it realy offering any actual benefit at all? Just seems like a normal single to me than whines Slow one at that, although does say low boost setting, i suspect its just testing out. Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted February 7, 2010 Share Posted February 7, 2010 Single turbo and supercharger. http://www.youtube.com/watch?v=kxdPNvMuPsE All that response and his gear changes take 7 seconds Also, love that the 7" dial rev counter doesn't appear to work Quote Link to comment Share on other sites More sharing options...
Scott Posted February 7, 2010 Share Posted February 7, 2010 Been taken down Quote Link to comment Share on other sites More sharing options...
JamieP Posted February 7, 2010 Author Share Posted February 7, 2010 Been taken down I dont think he liked my comment so took the video down and just uploaded again, wind up time maybe? Quote Link to comment Share on other sites More sharing options...
gaijin Posted February 7, 2010 Share Posted February 7, 2010 The forthcoming Zenvo ST1 from Denmark(yes) runs both a supercharger and turbo,Supercharger for low down torque to eliminate lag and turbo for out and out power.They detuned it from 1500 bhp to 1100bhp.Out soon. Quote Link to comment Share on other sites More sharing options...
Scott Posted February 7, 2010 Share Posted February 7, 2010 550HP my arse, my BPU looks faster than that. Quote Link to comment Share on other sites More sharing options...
Scott Posted February 7, 2010 Share Posted February 7, 2010 I dont think he liked my comment so took the video down and just uploaded again, wind up time maybe? Quote Link to comment Share on other sites More sharing options...
Kirk Posted February 8, 2010 Share Posted February 8, 2010 I want to play Quote Link to comment Share on other sites More sharing options...
JamieP Posted February 8, 2010 Author Share Posted February 8, 2010 I want to play Lol, nice comment. Quote Link to comment Share on other sites More sharing options...
marc_p Posted February 8, 2010 Share Posted February 8, 2010 I have to admit in my very short ownership of a TT, I so far don't mind the lag at all:) Quote Link to comment Share on other sites More sharing options...
Scott Posted February 8, 2010 Share Posted February 8, 2010 I have to admit in my very short ownership of a TT, I so far don't mind the lag at all:) Thats because you are driving a TT bud, have a read through the comments. Its all single based. Stick it in TTC and see if you mind it then Quote Link to comment Share on other sites More sharing options...
JamieP Posted August 6, 2010 Author Share Posted August 6, 2010 (edited) Bringing back an old thread, now im on the air cooled DBB billet 76mm i still want more power. Having a play on my private track the weekend i am making .5bar at 3200rpm in 6th gear and hits full 2 bar boost at 3700rpm. Still have great spool time, even in first gear i can make 2bar and with my 8200rpm rev limit i have a huge power band and im willing to lose some of that for more power. Turbo suggestions? Edited August 6, 2010 by JamieP (see edit history) Quote Link to comment Share on other sites More sharing options...
johnny g Posted August 6, 2010 Share Posted August 6, 2010 You thought about one of the billet Garrett's? I've looked a few times at the GTX4508R and really does look nice. http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT45/GTX4508_800270_1.htm Quote Link to comment Share on other sites More sharing options...
JamieP Posted August 6, 2010 Author Share Posted August 6, 2010 You thought about one of the billet Garrett's? I've looked a few times at the GTX4508R and really does look nice. That does look good, worth considering for sure. Top of my list at the moment is the Garrett billet GT47-80, there is a white supra in the states running one on a 3.0L (i will be 3.4 soon) and it goes like stink, beating big bikes from a roll in 1st gear. Will link some videos of it later, im on my phone at the min. Quote Link to comment Share on other sites More sharing options...
monsween Posted August 6, 2010 Share Posted August 6, 2010 Bringing back an old thread, now im on the air cooled DBB billet 76mm i still want more power. Having a play on my private track the weekend i am making .5bar at 3200rpm in 6th gear and hits full 2 bar boost at 3700rpm. Still have great spool time, even in first gear i can make 2bar and with my 8200rpm rev limit i have a huge power band and im willing to lose some of that for more power. Turbo suggestions? Jamie, you'll never satisfy that power hunger, build a jet car Quote Link to comment Share on other sites More sharing options...
johnny g Posted August 6, 2010 Share Posted August 6, 2010 That does look good, worth considering for sure. Top of my list at the moment is the Garrett billet GT47-80, there is a white supra in the states running one on a 3.0L (i will be 3.4 soon) and it goes like stink, beating big bikes from a roll in 1st gear. Will link some videos of it later, im on my phone at the min. I think I know the one you mean - is that GT47 turbo still available on a T4 footprint, or will you have to go T6? Quote Link to comment Share on other sites More sharing options...
JamieP Posted August 6, 2010 Author Share Posted August 6, 2010 I think I know the one you mean - is that GT47 turbo still available on a T4 footprint, or will you have to go T6? Yeah GT47 is T6, that would be one bonus of going with the GTX45 is that its still T4, just dont want to buy it and change again because its to small. Quote Link to comment Share on other sites More sharing options...
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