How to check compression?
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How to check compression?
People appear to be saying that one of the surest tests for engine condition is whether it's running at a good compression. Well, on this 86 RX-7 that I'm considering buying for a project car, how and with what do I check the compression and what should the compression be?
Scott Farmer
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Scott Farmer
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From: Charlotte NC
Re: How to check compression?
Originally posted by WankelNut
People appear to be saying that one of the surest tests for engine condition is whether it's running at a good compression. Well, on this 86 RX-7 that I'm considering buying for a project car, how and with what do I check the compression and what should the compression be?
Scott Farmer
Rotary Newbie
People appear to be saying that one of the surest tests for engine condition is whether it's running at a good compression. Well, on this 86 RX-7 that I'm considering buying for a project car, how and with what do I check the compression and what should the compression be?
Scott Farmer
Rotary Newbie
I think stock is 9.4 : 1 and minimum is 6.0 : 1 with a difference of no more than 1.5 between sides. It's been awhile since I have looked up the N/A info so someone correct me if I'm wrong. Of course Mazda has all of the correct info at the dealer when they do the check. You get a printout with the readings and weather they pass or not.
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