• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Cylinder head bolts max torque??

  • Thread starter Thread starter gsryder
  • Start date Start date
G

gsryder

Guest
Okay quick over view....

1981 GS 1100 engine
APE heavy duty head studs
Cometic copper base and head gasket - (Gaskets were anealed and installed with two applications of gaska cintch, apply one layer let get tacky apply second layer let get tacky then assemble)
Head has been o-ringed (copper O-ring)
750 oil pump gears (lots of oil pressure)
Turbo Charged
Fresh rebuild less than 20 miles
I have not retorqued the head from intial assembly

I took the bike out for a little test and tune run the other day and rang it a little hard running up to 10 psi and she started leaking a little (kinda allot actually) oil from the head gasket and I think a little from the base gasket as well.

My question -
With the heavy head studs and copper gaskets can I torque just a tad over the manfacture recommended 25 - 29 ft. lbs........

I was thinking maybe torque to like 35lbs.????

For those of you drag racing or running boost your selves do you cheat a little and over tighten the head bolts???

Here is pic of the bike just for fun
0504112054.jpg
 
RacingJake said:
APE says 36 to 42 ft-lbs

Heck I torque the oem studs down to 42 ft-lbs too.
Click to expand...

I usually "fudge" the O.E.M. torque specs a percent or two for safety. (calibration of torque wrenches and all)
Good to know that I can go a bit further safely. Thanks for the post! ;)

Daniel
 
38~40 is where I like to be at with APE studs and nuts. I don't suggest any more unless you like to gamble.

and it may leak oil regardless what you do from the head and base.

I have goten used to wiping my engine off - tried everything reasonable but a little gets thru no matter what I've done.
 
Okay cool, kinda wish I would have done that the first time through.

Hopefully I can just give em a little squees and she will seal up.
 
Take it apart & re-do it. Once a copper gasket leaks it will not stop. Also, the copper orings will crush. Use stainless or piano wire for oringing. You also should have retorqued the head after heat cycling it 2-3 times BEFORE you put it on boost. Torque the head to 40 ftlbs. Ray.
 
Re-read my above reply & try again! Gasgacinch works AWESOME if you do the install CORRECTLY, & RETORQUE after heat cycling! Ray.
 
You must log in or register to reply here.
Back
Top