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Location:
Adelaide
Registered:
May 2002
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Standard comp test results for 4AGE 16V
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Tue, 03 August 2004 13:02
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Hello all,
Not a question, just a discussion really
A strange and possibly exciting thing Rex came across last week...
Work landed its container the other week so as you can guess it fell to Rex to leak and comp test all the engines. Among many there are two 20 Valves Black and Silver and a 16 Valve small/bigport hybrid.
Upon comp testing the 20 Valves they made approx 200 to 210psi from memory with very good leakdown figures.
The 16 Valve on the other hand with only 2 compression cycles cranked right off the dial (250psi max) and a very respectable 30 - 35% Leakdown. Not once, but repeatedly, all three times it was re-tested. Given these results, the fact that the manual says 179psi and the three puck brass TRD clutch and 3kg flywheel hanging off the back makes rex think that it may not be standard at all.
Have pulled sump and cam covers off but beyond that checking for goodies without dismantling the whole thing is difficult and quite honestly not worth it from a business point of view.
Just as a a starting/reference point whats the relationship between a compression test result and the compression ratio? He knows what each are but if CR has a large worthy effect on test results he would like to discuss.
Rex
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