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 Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
Join Date: Jan 2001
Posts: 696
Wrench says mech. tensioners better than hydraulic?

Wrench during valve job wants trash the tensioners on my '87, says the mechanical type are more reliable. Is that true?
Second, says the cylinders (Mahle) can be honed and fitted with new rings? I'm ok with the idea of new rings but won't honing damage or wear through the cylinder plating?

Old 03-27-2002, 08:56 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Team California
 
speeder's Avatar
 
Join Date: Jul 2001
Location: los angeles, CA.
Posts: 41,284
Garage
If your mechanic is in fact a Porsche specialist, I would say that #1) He is in the extreme minority w/ tensioner opinion, (oil-fed tens are spring+hydraulic, quiet, dependable, etc., and #2) is dead wrong about "honing" nikasil or alusil jugs. You will hone the plating right off of them. If you doubt this, do a search and you will get opinion of Roland Kunz, John Walker, etc.

Where did this fellow get his training? Might want to get a second mechanic's opinion. Good luck.
__________________
Denis

I'll bet that Bolton is wishing that he was a gay MAGA clown pathological liar right about now.
Old 03-27-2002, 11:40 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered
 
beepbeep's Avatar
 
Join Date: Jun 2001
Location: Sweden
Posts: 5,911
Huh? He's wrong...
__________________
Thank you for your time,
Old 03-28-2002, 01:26 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Navin Johnson
 
TimT's Avatar
 
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,811
and your wrench knows more than porsche?

they changed to pressure fed tensioners for a reason

you need a new wrench.............
__________________
Don't feed the trolls. Don't quote the trolls
http://www.southshoreperformanceny.com
'69 911 GT-5
'75 914 GT-3
and others
Old 03-28-2002, 03:53 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered
 
Join Date: Jul 2001
Location: Springfield, MO
Posts: 1,422
Send a message via AIM to Oldporsche
Actually Porsche went from pressure feed tensioners, on early development motors, to non-pressure feed ones in their normal production cars. Then they went back to pressure feed tensioners.

I wouldn't go to mechanical chain tensioners. I know that I have a set in a 2.2E motor, however I will be changing them to the late model pressure feed ones as soon as I can. When I used mechanical ones, I did so knowing that I would be into the motor at least every other month. (I used them in an autox car)

Good luck,
David Duffield
Old 03-28-2002, 04:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered
 
Join Date: Aug 2001
Location: New York, NY, USA
Posts: 128
To change from pressure to mech on a car that has pressure is pretty odd unless you have a full-on race car that gets regular PM. The pressure fed can fail and ruin your engine (happened to a buddy of mine who does a lot of track events- make sure you have the anti-vibration clamp updates!) while a mech can not if done right. However, this is appropriate for only a very narrow application range.
The bit about honing cyls on an '87, which I bet you are in perfect shape, clinches it. Change mechanics.

Old 03-28-2002, 09:03 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Reply


 


All times are GMT -8. The time now is 06:57 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 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.