What the highest compression possible
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What the highest compression possible
so i went to check out an fd today i gues the dealership is having it check out since they got it at an auction the interior and outside look pretty good a few dings and the interior smell i dunno old i guess. so i asked the mechanic what did the compression test come out too he said 175% and this is on a stock fd i dunno the mileage though it said mileage exempt on the ad cuz they dont know the true mileage. when i heard that sounded like bs wat do u guys think? im gonna test drive it on weds possibly the mechanic should be done checking it out.
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#11
Keep Right Except to Pass
Originally Posted by scratchjunkie
175% does not compute
A percentage would make sense if it was less than 100.
So with his #s I get 231 psi.
If you want something done right, you have to do it yourself.
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well what the measure meant of the compression percentage cuz i thought it was a percentage but people talk about over 100% and i dont know how you can have over 100% compression
#17
what would be the lowest compression acceptable? when I check out this one fd im getting a compression test done on it if I like it before I buy it, and wondering what the lowest acceptable test rating would be on the engine.
sorry if im jacking the thread, something you might want to know as well though.
sorry if im jacking the thread, something you might want to know as well though.
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Originally Posted by maxcooper
11 is the highest possible. It used to be 10, but then Mazda started making them go to 11.
-Max
enjoying the unitless measurement humor
-Max
enjoying the unitless measurement humor
#20
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6.5 Kgf/cm2= about 92 psi (low limit for decent performance)
7.0 Kgf/cm2= about 100 psi (book spec)
8.5 Kgf/cm2= about 120 psi (really nice numbers)
9.0 Kgf/cm2= about 128 psi (killer #s)
175% of book spec would be
12.25 Kgf/cm2=175 psi
7.0 Kgf/cm2= about 100 psi (book spec)
8.5 Kgf/cm2= about 120 psi (really nice numbers)
9.0 Kgf/cm2= about 128 psi (killer #s)
175% of book spec would be
12.25 Kgf/cm2=175 psi
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