[Fot] Harmonic Dampener Question... now studs

[malaboge at aol.com]

Head mechanic-

Couple things to think about...
Be sure that the threads of the studs extend down into the hole in the head...ya don't wanna torque the nuts down and find out that they're just bottomed on the stud and not squeezin the head down!
Shimmin the rockers will change the geometry betwixt valve and rocker...if you've cut the head that much, you've probably shortened the pushrods to get the correct geometry.? If not you need to do that and shimming the rockers may be a step in the right direction for that issue.? If the geometry is already set, just pull the offending studs one at a time and shorten the tops for the needed clearance...shouldn't affect the head gasket seal.

Often off my rocker myself...
Nick in Nor Cal


-----Original Message-----
From: Robert Lang <lang at isis.mit.edu>
To: Tim Hutchisen <hakhutch at roadrunner.com>
Cc: fot at autox.team.net
Sent: Thu, 16 Apr 2009 7:40 am
Subject: Re: [Fot] Harmonic Dampener Question


Hi,?
?
?
So now I move on to the next "issue". I'm installing a head that is 3.290" think. Yes, that is not a misprint. I cc'd the head and the combustion chambers are 36cc's pretty much what I was looking for 11.9xx:1 +/-?
?
But the head is so freakin' "thin" that the studs are interfering with the rocker pedestals. UGH.?
?
So here's the next question: could someone please provide me with the dimensions of the ARP head studs for TR6 / GT6? Especially, the difference in the length of the ARP studs to the stock pieces. I'm trying to determine if I should bite the bullet and install a set of those or if I should just shim the pedestals to get another .020" or clearance (I'm 99% sure that's all I need.?
?
Of course I already installed the head gasket and torqued the head, so toss in a new head gasket (I presume) for good measure. Unless someone can convince me otherwise.?
?
Regards,?
rml?
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Bob Lang NER/SCCA | This space for rent?
Solo Chair 2008 TR6 40 F Prepared | Triumph!?
Voice:781-438-2568 FAX: 617-258-9535 | Cell: 339-927-4489?
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