Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 Engine Rebuilding Forum

LinkBack Thread Tools Rate Thread
Thread Post New Thread    Reply
Registered User
Join Date: Jul 2005
Location: Haarlem area, Netherlands
Posts: 211
Should I replace hydraulic tensioners in rebuild ?

Dear Pelicans,

My 1989 3.2 is up for a rebuild after 150.000 mls; oil consumption is around a quart per 500 miles, spark plugs show that cylinder 6 has an issue.

What is the general opinion here:
Should I replace the hydraulic chain tensioners for new ones as part of the rebuild ?
I mean preventive, they ran fine so far.

Thanks for any thoughts on this one !
Better a good one for a lot of bucks, than a bad one for little

Last edited by lindemans; 08-16-2010 at 01:47 PM..
Old 08-16-2010, 01:22 PM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Registered User
Walt Fricke's Avatar
Join Date: May 2004
Location: Boulder, Colorado
Posts: 4,940
I've not run accross an opinion on service life of these parts.

Me, I'd just put them back in. But that's me, and if one went bad I'd just replace it at that time and think little of it. Not every one is so cavilier.

I think you could do a crude test. To reinstall these you have to put them in a vice (or use a C clamp) in order to push the piston back far enough into the cylinder to get the keeper pin back in (if you don't have keeper pins, and I doubt you do as only people who have upgraded to or replaced one of these got them - so just use a small nail). Not only are you depressing the pretty stiff spring , but you are also forcing the oil inside the tensioner to flow out through a very small restriction. Hidden away up under the tip of the piston's hard cap.

So you (or at least I) have to work with the vice handle. tighten some, some oil comes out, tighten some more, repeat until it is fully depressed.

If this were to be too easy, maybe something is worn to the point that it won't do its vibration damping job.
Old 08-16-2010, 01:47 PM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)

Thread Tools
Rate This Thread
Rate This Thread:


All times are GMT -8. The time now is 06:22 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2017 Pelican Parts LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.