Sr20det redtop low compression

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Wadhah
Posts: 1
Joined: Fri Oct 16, 2015 2:21 pm
Car: S13

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Hey guys yeah so I have a redtop sr20det with gtx2867r with 20psi stock engine with metal head gasket

Last drift session I had oil filling up the catch can within 10 mins of drifting and the dip stick poping out

Did a compression test 2 of the cylinders are 110 and 105 the other two were 160

Note : car running fine , idling , starting , full throttle seems fine.

I know it might be the rings what u guys think ?

And Wat could be the cause ? I ran the car really hot a couple of times
Maybe bad tune ? af is 10.8 on wot
Or simply old engine and it's bound to happen

Thanks guys


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2_Liter_Turbo
Posts: 2980
Joined: Sat Jan 24, 2004 10:41 am
Car: _________________
'96 S14 Coupe: SR20VET
'90 R32 TH1 GTR: RB26DETT
'92 S13 Fastback: SR20DET
'11 V36 Sedan: VQ25HR
'06 GMT800 2500HD: LBZ Duramax
Location: DFW, Texas
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Typically if all four are down around the same, then you have worn rings. If two are good and two are drastically low, then that usually means something more serious. Warped head, too much detonation destroyed the ring lands, blown head gasket, etc etc. Could even be something like the rings are stuck closed. You are definitely getting some serious blow by though, so my guess would be that you definitely need to pull the motor and take it apart to see if it's able to be rebuilt or just thrown away.


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