Stuck at 610 WHP!!!
Originally Posted by TomeiEvo
Recently upgraded my GT35R with a 67 mm TO4R compressor wheel, everything else stayed the same 0.82 A/R turbine housing and dynoed it at 35 psi with C16, on a new 4wd Dynojet here, we made 608 WHP.
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From: K.L, Malaysia
Just came back from the dyno today, baseline run with no nos, 595 hp to the wheels at 35 psi. Injected 50 shot of nos with no timing retard whatever, power jumped to 635 at the wheels!! We then put in 2 more degrees of timing, final power output for the run, 649.7 hp to the wheels!!!
I guess the results are more favourable now as now we know that there is no need for timing retard on C16 fuel on 50 shot of nos. We're trying a 100 shot the next time around and see if we can break the magic 700 wheel hp mark!!!
I guess the results are more favourable now as now we know that there is no need for timing retard on C16 fuel on 50 shot of nos. We're trying a 100 shot the next time around and see if we can break the magic 700 wheel hp mark!!!
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From: K.L, Malaysia
The motor seems like to like a lot of timing and we monitor knock through the use of an HKS knock monitor that has provision for a headphone. The unit filters out unwanted noise and picks up knock signal only, honestly hasn't heard it tick or knowck whatsoever at that level!! Definitely, 700 WHP the next run still on a GT35R hybrid!!!!
Originally Posted by TomeiEvo
Recently upgraded my GT35R with a 67 mm TO4R compressor wheel, everything else stayed the same 0.82 A/R turbine housing and dynoed it at 35 psi with C16, on a new 4wd Dynojet here, we made 608 WHP.
Previously on a standard 35R compressor wheel, it made the same?? The 67 mm wheel is suppose to flow 75 ib/min compared to 65ib/min of the 35R. Whats happening?
Worst was when we injected 50 hp of nos, it made only 617 WHP at the same boost?? This is boggling me....
A/F with turbo only is about 11.8, we tried leaning it to 12.1, nothing happened.. we tried running 37 psi, nothing happened!!
We then proceeded in changing over the turbine housing to the 1/06 A/R housing, spool up was so much slower and yet it made the exact 608 WHP??? Is the turbine wheel just maxed out??
The fact that the nos was on and running a 11.6 A/F with nos, makes so little more is beginning to puzzle me...
Am trying to upload the dynograph here...
I know guys here have made more with the 35R, but the fact that my best run on my last pass with the non upgraded 35R was a 10.41@ 143 mph with a 1.9 sec 60 ft!!
Any help will be appreciated!!
Previously on a standard 35R compressor wheel, it made the same?? The 67 mm wheel is suppose to flow 75 ib/min compared to 65ib/min of the 35R. Whats happening?
Worst was when we injected 50 hp of nos, it made only 617 WHP at the same boost?? This is boggling me....
A/F with turbo only is about 11.8, we tried leaning it to 12.1, nothing happened.. we tried running 37 psi, nothing happened!!
We then proceeded in changing over the turbine housing to the 1/06 A/R housing, spool up was so much slower and yet it made the exact 608 WHP??? Is the turbine wheel just maxed out??
The fact that the nos was on and running a 11.6 A/F with nos, makes so little more is beginning to puzzle me...
Am trying to upload the dynograph here...
I know guys here have made more with the 35R, but the fact that my best run on my last pass with the non upgraded 35R was a 10.41@ 143 mph with a 1.9 sec 60 ft!!
Any help will be appreciated!!
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Al friedman had a simliar problem, turns out it was due to a SMALL hole in his intake mani. Could be a very tiny boost leak somewhere that doesn't occur untill under higher boost. Check for leaks and suck, seems like that would be my first guess?
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From: K.L, Malaysia
Originally Posted by RnR Racing
It almost sounds like you have a massive boost leak. I have experienced this on a few cars where the power was goign somewhere. Cracked IC, Intake, etc.
I did experience a big crack on the intake manifold months ago and we could onl get 31 psi no matter how much you boosted it and idle rpm was high due to the extra air being sucked in but in this case just doens't seem like it is.
Anyone knows if running a PWR water to air intercooler like the one on the Turbotrix Evo??
