Normally, valve guides or valve guide seals show failure during idle (smoking like mad) not while the engine is under load or positive manifold pressure. Guide seals are supposed to control oil flow to prevent galling between the valve guide and valve stem, not stop it entirely. IMHO, it is likely the shop either damaged the valve guide during the install, reamed the guide too much or the stem was out of spec and there is too much play between it and the guide. This would cause the excessive oil flow and may be the source of problem you are having.
Myron ----- Original Message ----- From: Bob Bundy To: [email protected] ; [EMAIL PROTECTED] Sent: Saturday, July 26, 2008 8:37 PM Subject: Re: Tailpipe smoking under load. I have had the same turbo drain on the car for a year and a half and never had a problem. With my turbo placement the drain is short about 6" long including fittings 5/8" ID and slopes into the pan with two 45 degree -10 AN pushlock fittings one at the turbo one at the pan, virtually impossible to kink because there is only about 1" of hose between the barbs on the fittings. I have a restrictor on the feed line as well and I also have no oil showing up in the intercooler piping. Just oil in and around one cylinder as near as I can tell. After changing the valve seals I don't think it is likely that it is seeping past the seal and between the guide and the stem. if it is a valve guide leaking it would be between the OD of the guide and the head I think, if that is possible. There is no drain back to the pan around the intake valve guides on the head by the #1 intake so the base of them sits in a pool of oil all the time more so than the others. Compression and leak down are good so if it's getting past rings it would be oil control rings only I think. cylinder walls and tops of the pistons looked good a few weeks ago as well. Seems like Oil is disappearing faster now I just put in another quart. Bob ----- Original Message ----- From: [EMAIL PROTECTED] To: [email protected] Sent: Saturday, July 26, 2008 3:33 PM Subject: Re: Tailpipe smoking under load. In a message dated 7/26/2008 2:04:25 P.M. Eastern Standard Time, [EMAIL PROTECTED] writes: Very little differance was made. I can drive it around in vacume and boost up to 5 maybe 10 psi and not see smoke. Full throttle 15psi and she smokes some. Bob Are you CERTAIN the oil is not coming from the turbo? If the drain on the turbo has a kink or simply does not drain quickly enough, the oil that doesn't drain will back up, go into the intake system, and eventually make its way out the tailpipe, and this is more likely to happen at higher boost levels. ---------------------------------------------------------------------------- Get fantasy football with free live scoring. Sign up for FanHouse Fantasy Football today. ---------------------------------------------------------------------------- _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower ------------------------------------------------------------------------------ _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
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