Valve Stem Oil Seals

Roger UK · 10-15-2005, 06:26 AM

I had previously seen tips on replacing the Valve Stem Oil Seals without taking the head off . . . but since this site has been re-vamped I have done a search but can't find any . . .

I have a recon engine, but when fitting the new stem seals apparently several of them split . . so they bought 6 more. But one cylinder (No 6) still seems to now have a faulty seal (getting lots of oil sucked into the cylinder on de-celeration, and plug gets REALLY oily)

So as it's just one don't really want to pull the head . . . how difficult is it to do this in situ? I know about putting rope down the plug hole and turning the crank to TDC to stop the valve dropping . . . but how hard is it to get the springs off/on and the stem seals off/on? Any tips from anyone who's actually done this would be very much appreciated!
_________________
1991 3.0i (N/A) Manual, Black Mica. Owned 6 yrs, Mint Bodywork, Daily Driver. Recent Engine Recon (rebored, crank ground, new oil & water pumps etc), New Rad & Catless Exhaust, EGR all removed, Inline PCV Filter (Photos at http://wessexproductions.co.uk/supra )

SupraMan1784 · 10-17-2005, 01:24 PM

mmm...sorry i cant help you..im assuming u have a 7m...when i had that motor i dint have a problem with the valve stem seals...ill try and search around for it though see what i can find

10-15-2005, 06:26 AM	#1
Roger UK Stock Join Date: Oct 2005 Location: Newcastle, England Posts: 7	Valve Stem Oil Seals I had previously seen tips on replacing the Valve Stem Oil Seals without taking the head off . . . but since this site has been re-vamped I have done a search but can't find any . . . I have a recon engine, but when fitting the new stem seals apparently several of them split . . so they bought 6 more. But one cylinder (No 6) still seems to now have a faulty seal (getting lots of oil sucked into the cylinder on de-celeration, and plug gets REALLY oily) So as it's just one don't really want to pull the head . . . how difficult is it to do this in situ? I know about putting rope down the plug hole and turning the crank to TDC to stop the valve dropping . . . but how hard is it to get the springs off/on and the stem seals off/on? Any tips from anyone who's actually done this would be very much appreciated! _________________ 1991 3.0i (N/A) Manual, Black Mica. Owned 6 yrs, Mint Bodywork, Daily Driver. Recent Engine Recon (rebored, crank ground, new oil & water pumps etc), New Rad & Catless Exhaust, EGR all removed, Inline PCV Filter (Photos at http://wessexproductions.co.uk/supra ) Last edited by Roger UK; 10-15-2005 at 06:37 AM.

10-17-2005, 01:24 PM	#2
SupraMan1784 SP58GT Join Date: Jun 2005 Location: Dirty Jerz Posts: 691	mmm...sorry i cant help you..im assuming u have a 7m...when i had that motor i dint have a problem with the valve stem seals...ill try and search around for it though see what i can find __________________ Now: Saving for an MKIV Broken Rides: (Sold) 91 supra turbo 5speed with a 1jzgte motor 421whp 400(399) ft*lbs of torque on tap @ 15 psi "Always outnumbered, never outgunned."

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