would you guys be going a to4z roller or gt42 roller??? housings?? any1 currently have a similar set up and going for big numbers? i am looking to keep mine streetable but a few of the big names are telling me my gt35/40 1.06 rear housing wont cut the cheese

Quote: Originally Posted by PRO STREETER would you guys be going a to4z roller or gt42 roller??? housings?? any1 currently have a similar set up and going for big numbers? i am looking to keep mine streetable but a few of the big names are telling me my gt35/40 1.06 rear housing wont cut the cheese What big number are you aiming for? Your turbo could push out 430rwkw on race tune and if you have a gearbox that can hold it id say your looking around 9.7 roughly. vlghm nearly did it but his gearbox let go and he still got a 9.9. Nobody has done it because they dont persist with it and simply whack on a bigger turbo. If all you wanted was a 9 then keep it. If you want 9.5 go the to4z. If you want a low 9 go the gt42.

the box will hold it, its a keas 550kw jatco.. transbraked etc etc all the kahoona this turbo hasnt been proven to run over 140mph.... a consistant 9 sec pass would involve soemthing around 140mph all day every day..

Go the bigger one then you can be sure to run 9's. Streetability wont be as good but meh you want 9's.

430 to run a 9.7? wtf james - itufrb did a 9.5 on 380 rwkw

Quote: Originally Posted by Petros 430 to run a 9.7? wtf james - itufrb did a 9.5 on 380 rwkw Depends what dyno you go off petros . Rajabs do read lower than others. And i said roughly. Looking more at mid 9's Quote: Originally Posted by PRO STREETER the box will hold it, its a keas 550kw jatco.. transbraked etc etc all the kahoona this turbo hasnt been proven to run over 140mph.... a consistant 9 sec pass would involve soemthing around 140mph all day every day.. Your box is actually rated at 500kw at the engine and i wouldnt push it much past 400rwkw. i know this as ive spoken to paul about the box you have. If you upgrade to a to4z or gt42 you should go a 2 speed as i wouldnt want to risk breaking the box. Some original photos have not been recovered yet.

interesting.... 400 genuine rwkw is a 9 second pass i believe..

well on thye RB26 into the mid 2X psi the t04z's are spitting out over 400-440rwkw on PULP reasonably easily Not even a requirement to hitup race fuel which is excellent. Not sure how the RB30 would handle it, motors are quite different etc. But it gives you an idea. T04z's are a very sweet turbo for the GTR crowd

yeah i would love to get into the 9's on pulp but something tells me not gonna happen!! lol i would rather run c16 anyway and run a safer tune

Quote: Originally Posted by PRO STREETER interesting.... 400 genuine rwkw is a 9 second pass i believe.. I'd estimate around the 360 kilowatt @ the wheels mark would get you just into the 9 second zone with a properly set-up VL Turbo. If you just wanted to crack a 9 second pass...

there's a vl up here that has actually moved down to brisbane aj owns it it's pushing 584hp at the wheels out of a gt35/40 on 30psi plus!

Quote: Originally Posted by PRO STREETER yeah i would love to get into the 9's on pulp but something tells me not gonna happen!! lol i would rather run c16 anyway and run a safer tune To run a 9 second pass in virtually any car you need boost, and lots of it, and the only way your engine will cope is with a tune based on a high octane fuel. Don't listen to the bull**** ****s that reckon they run numbers on low boost. They're just pissing in your pocket thinking they've got tricks up their sleeve, when they don't have ****! Some original photos have not been recovered yet.

Rear Wheel ANYTHINGS (HP or KW) or for that matter flywheel anythings are not a reliable indicator of track times. Tuning a car/engine to pull max HP on a dyno is a completely different scenario to drag strip conditions. Many times I have seen guys strap a drag strip proven combo onto the chassis rollers and be very disappointed with the outcome. Often there is less power showing than street combos which are specifically dyno tuned. The guy with the drag combo has a bit of a shattered ego and proceeds to have his weapon retuned to light up that dyno to a much more satisfying number. Upon taking it back to the strip again however he is often slower by up to a full second in E.T.'s! The fix?? Take the tune back to where it had last been producing decent strip times! The key is 'engine acceleration'. There is a BIG difference between how much load an engine can support (turbo combos are really good at supporting load), and and how quickly it can accelerate a given mass. A dyno will load up your engine far more than the cars weight will load it up on a drag strip. So the focus must shift from max load capability to max acceleration! My 2 cents worth... Some original photos have not been recovered yet.

Quote: Originally Posted by mild25/30 Rear Wheel ANYTHINGS (HP or KW) or for that matter flywheel anythings are not a reliable indicator of track times. Tuning a car/engine to pull max HP on a dyno is a completely different scenario to drag strip conditions. Many times I have seen guys strap a drag strip proven combo onto the chassis rollers and be very disappointed with the outcome. Often there is less power showing than street combos which are specifically dyno tuned. The guy with the drag combo has a bit of a shattered ego and proceeds to have his weapon retuned to light up that dyno to a much more satisfying number. Upon taking it back to the strip again however he is often slower by up to a full second in E.T.'s! The fix?? Take the tune back to where it had last been producing decent strip times! The key is 'engine acceleration'. There is a BIG difference between how much load an engine can support (turbo combos are really good at supporting load), and and how quickly it can accelerate a given mass. A dyno will load up your engine far more than the cars weight will load it up on a drag strip. So the focus must shift from max load capability to max acceleration! My 2 cents worth... This drag combo you are talking about, isnt it dyno tuned in the first place? So he should know what to expect when it goes back on the dyno? But he isnt happy so he gets more out of it but then worsens his time? Whats going on? Some original photos have not been recovered yet.

boost=power power=quicker times!! simple if you got the gear in the motor and a good tune thats all it is,dont bother with pump fuel there is no prize in that all the bullsh it "did it on pump fuel" so what are they going to pay for your engine to get fixed(no)anyway c-16, boost, and away you go!!as for driveability on the street you can't have both so pick one!I think a T66 is the biggest street turbo i would use(maybe because i did lol)good luck anyway

the dyno isnt the best indicator but it still will give you a rough indication if u have been using the same dyno over a period of time eg. making 350rwhp and running 11.9 then making 450rwhp and going 10.9... on the same dyno, if i then roll up and make 550rwhp i would expect to run a 9 these figures are just up in the air.. i dont mean anything by them..

Id be having a look at the GT4088R, thats what I want next

Quote: Originally Posted by Wizbiki This drag combo you are talking about, isnt it dyno tuned in the first place? So he should know what to expect when it goes back on the dyno? But he isnt happy so he gets more out of it but then worsens his time? Whats going on? Ive got a few of these combo's in mind actually, and no they were not dyno tuned in the first place, cos they are carby v8's. They put the car up on the rollers and come up well short of dyno tuned street only drivers, so are subjected to the usual ragging by the street guys that their street cars would be faster than the drag strip car. One of these guys found 60rwhp on the rollers and put a full second on his strip time (i.e. 11.02 et before dyno tune, 12.1 et after dyno tune). Efi cars generally start with dyno tunes, and then go back to the dyno when looking for more hp. My suggestion from experience is that an engine needs a different fuel and timing curve on the dyno to the drag strip for best results on either. Heads up: Richen up the AF/R's and give it some more timing for the strip, cos the dyno doesnt know crap about the drag stip!

gt 35/40 with a 66mm wheel

oh ok, i gotcha now