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Posted by: Highland Aug 27 2012, 04:12 PM

I just want to make sure I'm milling the right area for the 1.7 rocker arms to fit the 911 swivel foot adjusters.

Can someone confirm for me the attached picture is correct?

Is +/- .005" good enough?




Attached File(s)
 1.7_Rocker_Arm.pdf ( 375k ) Number of downloads: 302

Posted by: SLITS Aug 27 2012, 04:51 PM

You are most certainly correct Sir!

Posted by: mrbubblehead Aug 27 2012, 05:50 PM

the pdf wont open for me. but i countersinked my holes also. it just gave me a little more room for the foot...

Posted by: dirk9141973 Aug 27 2012, 06:49 PM

Is it uncommon to having to shim under rocker arm ? building 2056 with cam and stock rocker arms and push rods all the valves adjust great but had to shim under blocks to provide clearancs.?

Posted by: yeahmag Aug 27 2012, 07:49 PM

The usual answer is "it depends...", but I've never built a non-stock motor and not had it to shim.

Posted by: jaxdream Aug 28 2012, 08:21 AM

If you do the mod and use the feet , you should do a rocker arm geometry check . Also you may have to get a set of longer / shorter pushrods . Do a search on rocker arm geometry , should find a lot explaining the process.

Jack

Posted by: gothspeed Aug 28 2012, 09:08 AM

+1 on the addtional countersink ............ it allows for the foot without having to remove as much material from the face. I think I saved .020" of what normally would be removed.

Posted by: Valy Aug 28 2012, 02:18 PM

Make sure you don't create a step in the arm. Forces will concentrate on the corner of that step and brake the arm.

Posted by: gothspeed Aug 28 2012, 04:16 PM

true! mine were all deburred and almost polished on the edges .....

Posted by: dirk9141973 Aug 30 2012, 07:04 PM

had one hell of a time getting the push rods and rocker arms seat why? No longer need shims under blocks !!