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Gtr Dyno Reading Low?

PHATR32
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PHATR32 Grand Master

PHATR32

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Posted (edited)

hi guys,

I got my gtr dyno'ed a couple of weeks ago, and was wondering if the power figure was normal.

Its early 89, no doubt 200k+ on the clock.

got 225HP at 8psi boost

only mods are Apexi pods (no heat sheild)

Fuel was caltex vortex (couldnt fill up on bp98 at the time)

Its got the stock exhaust, cat, and boost restrictor.

I havnt run a compression test or leakdown test yet, and it doesnt seem to be using up oil.

so is that figure someting to worry about, or is it normal for a car of that age?

Thanks

Steve

post-11604-1147312779.jpg

Edited by PHATR32
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Quinny Rising Star

Quinny

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Posted (edited)

That sounds pretty good for a stock 200k+ km GTR. If the car was modified the it might be a different story. The figure is even better if you used a 4WD dyno as you get more drivetrain loss. I wouldn't worry too much about the actual power figure asy dynos always vary, your power & torque curves will tell more about the way your car is running.

Beer Baron: 225hp is about 168kw.

Edited by Quinny
PHATR32 Grand Master

PHATR32

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Posted (edited)

yeah its 168kw, at the rear wheels.

i was just thinking about it last night, and it popped into my head that they are 206kw from factory form.

But then i just thought about it again a few mins ago (after a strong coffee) and remebered thats 206kw at the engine.

So therefore: drivetrain loss + 16 years of abuse + 200K = lower power reading?

did i just answer my own question?

steve

Edited by PHATR32
Simonster Proficient

Simonster

Posted
Posted

Looks good, nice solid power for such an aged car.

Ring Lumpy and ask him if he'll print you one with the AFR on it. Should still be in the computer.

You won't get a torque graph. Well you can but it won't be accurate, once you start running it through gearbox/diff etc the figures of the reading will mean nothing. all it will do is give you an idea where it's strong and where it isn't. Remember, to get an ACCURATE torque figure you need and engine dyno, once the gearbox diff/tyres come into the equation all it will give you is an ESTIMTAE of tractive effort.

Hope I've explained that clearly?

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