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Old 12-03-2019, 10:56   #1
Camwarren3210
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Evo 8 MR low compression in Cyl 2

Hi guys, looking at buying a evo 8 Mr fq300 from interstate. I got a presale inspection by the local evo specialist which has been used for all servicing/replacements. A compression test showed 170,130,165,170 across the cylinders. Despite the low compression no faults were found in performance or when driving the car.
the owner didnt want to pursue the issue as he had already put too much into the car and just wanted a sale. Instead he dropped 2k in price for the chance of it being bad.
the car was in perfect mechanical order other than the compression issue and the car only has 107,000km.
ive been told it could be a variety of things, some of which are cheap fixes (carbon build up beneath the valve) other mechanical issues being expensive (rings, valves).
What do you all think is likely? Looking for advice..
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Old 12-03-2019, 11:38   #2
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How much is he willing to sell it for?
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Old 13-03-2019, 06:48   #3
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Evos have a habit of breaking piston ringlands on the stock pistons, that's probably it.

Talk to the person who will be servicing the car for you and ask them how much a new piston and labour to fit will be. If it's less than 2k, I think go for it.
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Old 10-04-2019, 00:16   #4
war-machine
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Evo 8 MR low compression in Cyl 2

its like your talking yourself into buying it no matter want...funny guy is selling it and low compression in one cylinder...un-do spark plug and put a small amout of oil ? teaspoon is fine... compression test that cylinder now ? if reading now go's up ? WALK AWAY...cash is king..you will get another go at another Evo


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Old 10-04-2019, 19:56   #5
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Originally Posted by pmugabi View Post
Evos have a habit of breaking piston ringlands on the stock pistons, that's probably it.

Talk to the person who will be servicing the car for you and ask them how much a new piston and labour to fit will be. If it's less than 2k, I think go for it.


that's the cowboys way of fixing engine..owner Probably knows what's wrong with the car that's why selling it...MY ADVICE IS WALK AWAY.. uless you are mechanically minded and could strip an engine and put it back together..the way mitz have or better


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Old 10-04-2019, 19:58   #6
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that's the cowboys way of fixing engine..owner Probably knows what's wrong with the car that's why selling it...MY ADVICE IS WALK AWAY.. uless you are mechanically minded and could strip an engine and put it back together..the way mitz have or better


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2k for rrbuild of one piston


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