Jester_Si

Ok, i have a ls/vtec motor i assembled for someone.....start it up and it had a "putter" to it.

First thing i did was compression test...#3 cylinder had 65psi. Added oil, no change.

So i pulled the head... not thinking to do a leakdown like a dumbass. Although i am pretty sure its in the head. What else would you expect buying a head from someone on Vadriven.."in perfect shape"

Now i have the head on the bench, #3 cylinder being suspect, i fill the ports with ATF and......what do ya know, 1 valve on the intake side and 1 valve on the exhaust side leak fluid, all others held fine.


Heres my question.... Does this mean its just my valve seats or will i still need my valves put on a lathe? I can have just the two fixed right, not all 4.

I know i sound cheap, but this motor has been a sumbitch.

CHAHONDA

1st make sure they arent bent. next take some lapping compound and with the valves in the head but the springs removed, place the valve stem in a drill and spin the hell out of them. with the compound on the seat area of the valve of course. this will seat the valve seat and valve and correct the non-sealing issue

Jester_Si

Problem is i don't have the valve spring compressor for a vtec head....

DecentCivicZ6

yeah where the hell do you fin dthem at??? i tried findin one in local stores...couldnt find shit to work.

Jester_Si

Snap on has one, our local guy never had it and i have never needed it enough to order it.

1rude2l

seen them on ebay for like 50 work awesome though, well worth it if you do your own motor work