Robert
I have recently fitted a Goodparts ATI damper to my TR6 race car and found I
had to reposition the motor back to clear the steering rack due to the
damper sticking out from the block further than the standard . The motor
revs very smoothly to 7500 with the damper. Over Easter I pulled 7300 down
conrod straight at mount panarama.
Strongly recommend full circle crank thrust washer if you are doing serious
racing.
Geoff Byrne
TR6 Racer down under
----- Original Message -----
From: "Robert Lang" <lang@isis.mit.edu>
To: "Tim Hutchisen" <hakhutch@roadrunner.com>
Cc: <fot@autox.team.net>
Sent: Friday, April 17, 2009 12:40 AM
Subject: Re: [Fot] Harmonic Dampener Question
> 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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