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Kazama1986
09-03-2008, 07:56 PM
Well my sr20det redtop started to smoke and from guess it has to be the valve stem seals. I have found replacements at phase2motortrend. but on this little write up it says i can use ka24de ones for the exhaust and sentra ones for the intake. the write us is here Technical Articles: How To: Build a 9000rpm SR20DET Head (http://www.nicoclub.com/articles.php?id=238409), and please don't burn for looking on nico club. but i was wondering if it true that i can use these instead of the ones from phase2motortrend. also i wonderng if i should do anything else to the head while i have torn apart. not things like upgraded springs and retainers and all that other fun stuff. just the bare minium i guess. my pockets are only filled with lint and old receipts. thanks for the time.

aNskY
09-03-2008, 08:01 PM
that would be the time to do a valve job, springs/retainers/cams, port/polish, etc .. but if dont have the cash or thats not what youre lookin for, just replacing the seals would be fine.

Kazama1986
09-03-2008, 08:28 PM
thanks for the reply, but does anyone know if the valve stem seals can be used from a different motor?

Sileighty_85
09-03-2008, 08:41 PM
Just buy OEM dont cheap out and buy some autozone crap that will wear out after a year or so

OEM S13/S14/S15 SR20DET Valve Stem Seals (http://phase2motorsports.stores.yahoo.net/oems1srvasts.html)

Kazama1986
09-03-2008, 10:26 PM
sorry but i have another question. i'm planning on doing this with the head still on the block. how would i pressurize the cylinder?

Sileighty_85
09-04-2008, 05:51 AM
there is an adpater that you can buy that screws into the spark plug socket.

I heard ppl say that doing a cylinder at a time is easier if you raise that cylinder to TDC and letting the valve sit on it.

pwr-adr
09-05-2008, 06:00 PM
/\ /\ True, just set the cylinder you are working on to tdc so even if the valve does drop it doesn't go down too far and looses alignment with the guides. I just used a similar sized socket in comparison to the seals and tapped them down. No issues since.

Kazama1986
09-05-2008, 11:47 PM
but how did you pull the seals out since the valve is still in place. do they break loose easily?