...luckily i copied the content of M3Turbo's post:
This is what he wrote and got lost:
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Motor = 1UZ , stock bore, stock stroke
Max Boost = 26PSI
AFR across boost band = 10.8:1 (yes it's still rich)
Max Torque =
1179NM (870 FtLbs) @ 5K
Max HP =
880 HP @ 5.4K
Outside ambient temp = 30C
Well finally got some dyno figures, but the session had to be stopped short before I could try leaning it out. The tires 315 drag radials would spin on the dyno, so we sat 4 guys on the boot, but still we still got slip at about 5K, however finished up shredding a brand new drag radial . This graph run had to be halted at 6500 RPM too, due to dyno speed limit 290 KMH. Otherwise the engine will rev out to 8K under normal driving conditions and other dyno runs.
BTW I have now been running this set up for a few months almost daily, or I should say nightly, with long repeated hard full power runs (though traction is an issue), deliberately testing its reliability, so far seems to be holding up. Thanks again David - Lex for your input. Head gasket leak issue is no more.
But in order to gain more power it is pretty much conclusive that the turbo, Garret GT42 with 102/76mm comp wheel is just way too small for my needs and I believe the current stock intake is on the edge, AFR’s varying between cylinders etc. Next step is to solve these issues, bigger turbo and the new intake in progress.
Hope to have more soon.
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I hope he posts his info again soon,
he also attached this dyno file:
In previous posts he listed the specs (copy paste):
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Basic specs are:
Ross/Carrillo package 6sp Supra box, custom flywheel, 4 plate OS Giken.
CR=8.5:1
Autronic SM2 - 1.93 + R500 CDI .
Small solenoid boost control valve.
8 x Bosch coils
Autronic AFR meter + Uego.
Single Garrett GT45R + 102/76mm compressor wheel, 1.22 AR.
HKS GTII Wastegate
Headers = 4 into 1 each side 2” primary’s, 3.5” secondary’s,
Single 4” outlet pipe at front of car
Fuel = Toluene based race gas, was using Avgas.
8 x 1000cc denso’s, standard rails, HKS FP regulator
2 x Bosch 044 fuel pumps.
Big intercooler + aquamist.
Ported heads, standard valves & shims, titanium lifters, race springs, Kelford 272/272 cams (
[email protected]”)– but they came with centers a country mile out. I had to make some vernier wheels and custom exhaust cam gear to move the centers, Now at 112/116 in/ex.
The plan is to go to 2.0 + Bar boost. The current GT45 turbo is maxed out flow-wise at 1.6bar on this set up.
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