Forget their moly lube! Use engine oil and torque them to the standard
manual setting.
Bruce
----- Original Message -----
From: "Scott Janzen" <s.janzen@comcast.net>
Cc: "'Friends of Triumph' Triumph" <fot@autox.team.net>
Sent: Thursday, April 16, 2009 12:53 PM
Subject: [Fot] ARP main cap bolt torque - GT6/TR6?
> Anybody know what the torque for the ARP crank main cap studs should
> be with moly lube? ARP couldn't tell me unless I told them what part
> # of theirs is in the engine. I got the engine with ARP hardware
> installed and don't have any parts numbers to give to ARP.
>
> On Apr 16, 2009, at 10:40 AM, Robert Lang wrote:
>
> Hi,
>
> Update on the crank thing... I measured the crank to the best of my
> ability (I have to admit that it takes me a while to recall how to
> read micrometers properly... well that and the fact that I have a lot
> of trouble seeing the gradations on the micrometers, but I digress)
> and the crank is round (to within .0005) and it also true to within
> the capability of my dial indicator. I did discover that the crank end-
> float is slightly out of spec, but it's a TR6 - I think that's a given
> (and I have a box of thrust washers to play with.
>
> What I wound up doing was installing the Goodparts ATI superdamper.
> When the parts arrived, I sat reading the directions and then went
> around the shop and garage picking up this and that (like a brake
> hone) in case I needed to "help" the fitment... the thing literally
> bolted on. The part on the crank is nice and tight, but almost no
> effort was needed to draw it in place. This was a very pleasant
> installation... highly recommended.
>
> 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
> ---------------------------------------------------------------------------
> 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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