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Posted by: newdeal2 Nov 7 2004, 11:25 PM

I used the Tom Wilson book on some of my engine rebuild. It says to tighten the rocker shafts down at 18 Ft lbs.

Is this too much [Jake's video, I discovered after the fact, says less]? If so should I go back, reset and re adjust the valves?

Posted by: Brad Roberts Nov 7 2004, 11:40 PM

18 is too much for that size of nut/stud. Should be in the 10 range if I recall correctly.



B

Posted by: MattR Nov 7 2004, 11:44 PM

Im having a helluva time with those rocker arms and studs. I went to 18 (per the red book), but Im thinking it was too much. I need a new stud now.

Posted by: newdeal2 Nov 7 2004, 11:47 PM

Hmmm...so I go back and lighten it up? Is it possible I stretched the studs or am I getting anal here?!

Posted by: Brad Roberts Nov 7 2004, 11:47 PM

Common torque settings across the Porsche board just barely call for 18 on a M8 stud... NO WAY they would use 18 on a M5 stud.


B

Posted by: newdeal2 Nov 7 2004, 11:49 PM

Im having a helluva time with those rocker arms and studs. I went to 18 (per the red book), but Im thinking it was too much. I need a new stud now.

Posted by: Brad Roberts Nov 7 2004, 11:51 PM

If anything it will strip the threads out of the puny nut.


B

Posted by: newdeal2 Nov 7 2004, 11:54 PM

So...do I back off the torque or replace the studs? I had this problem before on a water cooled head and relaced the studs but that was a more critical location., i.e head studs.

Posted by: Brad Roberts Nov 7 2004, 11:57 PM

The studs should be fine.. replace the nuts and inspect the studs.


B

Posted by: MattR Nov 7 2004, 11:58 PM

This is an M7 stud, not M5... atleast for the 2.0L heads.

Brad, do you guys have any rocker arm studs you can pull?

Posted by: Brad Roberts Nov 8 2004, 12:02 AM

Hundreds upon hundreds of heads.. but Jake likes to use the VW type one pieces (I think)

The nut is 11mm I *thought* the small end of the stud was a M5.


B

Posted by: Jake Raby Nov 8 2004, 03:15 AM

Actuallymine are ARP units made just for the purpose, but the TIs will work if you ream the rockers for their shoulder...

I never use the stock studs, they threads rip right out of the nuts- They are too small even for a stock engine. When I did use them I believe we loctited them at 10 lb/ft..

Posted by: Rhodes71/914 Nov 8 2004, 12:02 PM

I am about to put my 2.0 back together, should I put different rocker arm studs in?

Posted by: Jake Raby Nov 8 2004, 12:43 PM

Every engine can benefit from better studs. I have seen them snap with stock spring tension on a bus engine. Since that I have used nothing else but the H/D units..