The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
7/1: Members: Log In to See Fewer Ads! |
5/28: SAAB Evolutions/TSN T-Shirts $14
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
[Main 9000 Bulletin Board | BBFAQ |
Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: Maintaning the HG: retorque head regularly Zip Said
Posted by Al [Email] (more from Al) on Fri, 2 Jul 2004 17:29:26
In Reply to: Maintaning the HG: retorque head regularly Zip Said, Daren, Fri, 2 Jul 2004 14:00:02
Members do not see ads below this line. - Help Keep This Site Online - Signup
Unsure about this. Saab's head bolts are torqued to yield. That is, they stretch to a point where they don't necessarily return in original size once untorqued. From what I know, the consensus is that Saab bolts can be reused a few times.
The thing is, if you plan to reused the bolts, you have to pull out all of them and check for evenness of stretch - they should remain equal in length.
Also, you don't just re-torque them after they're in there for a period. This is because after you torque them to ..what is it? around 65 ftlbs..., you tighten them a further 90deg. This leaves a final torque setting of ...unknown. Roughly 100ftlbs, but this depends on how much friction there is in the thread.
If you are to torque up your old bolts again, you only do so after taking them all out, inspecting them and replacing the gasket (although if the head is undisturbed, this may not be necessary).
In Oz at least, Saab head bolts have been superseded by a sort that include a washer and extra threading near the head and these apply to all Saab 4cyl engines.
al
posted by 203.61.13...
Posts in this Thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
![](/tsn/xyz/stateofninebutton.gif) |
SaabClub.com
![](/tsn/xyz/scnabutton.gif) |
Jak Stoll Performance
![](/tsn/xyz/jakstollbutton.gif) |
M Car Covers
![](/tsn/xyz/mcarcoversbutton.gif) |
Ad Available
![](/tsn/xyz/buttonavailable.gif) |
![](/tsn/images/tsnmap.gif)
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!