New build . No compression #2-4 cylinder
Oct 15, 2016, 08:36 PM
#17
Newbie
Thread Starter
Oct 15, 2016, 09:25 PM
#18
Newbie
Thread Starter
Oct 17, 2016, 04:44 PM
#20
Evolved Member
Go drive the car and do alot of engine braking. Decel from 4 k to a stop.
Could be rings are not seated.
It could also be improper ring end gaps or improper end gap position.
Or damaged ring/s from install.
Could be rings are not seated.
It could also be improper ring end gaps or improper end gap position.
Or damaged ring/s from install.
Oct 17, 2016, 04:47 PM
#21
Evolved Member
You might be over thinking it sir. Forget the compression and leak down teat results right now. Its a brand new engine that needs break in.
Also did by chance you use full synthetic oil?
Also did by chance you use full synthetic oil?
Oct 18, 2016, 12:02 AM
#22
EvoM Guru
iTrader: (1)
Brand new engines don't leak through the valves. Valves are lapped into the seat with lapping compound, they should be perfectly sealed when new.
Last edited by letsgetthisdone; Oct 18, 2016 at 06:33 AM.
Oct 18, 2016, 08:28 AM
#24
Evolved Member
And no matter how great a reputation the machine shop has, something you should always do before installing a head is check for leaking valves.
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