On 1/13/2010 5:43 PM, J.C. Hassall wrote:
> ARP bolts for the TR4 mains are HAR 3.500-5, while the washers are
> 200-8513.
>
> For folks who haven't used ARP hardware before, they recommend cycling
> (torque/loosen) new hardware 5 times before the final torque.
>
> jim
>
>
Crap, I meant to mention that the 5 cycle issue is only for the first time ARP
hardware is used with old threads. Also, the torque for the mains is 95 lb-ft.
jim
>> --- On *Tue, 1/12/10, J.C. Hassall /<jhassall@blacksburg.net>/* wrote:
>>
>>
>> From: J.C. Hassall<jhassall@blacksburg.net>
>> Subject: Re: [TR] TR-3/4 main cap bolts / ARP
>> To: "Tony Drews"<tony@tonydrews.com>
>> Cc: Triumphs@autox.team.net, jhassall@vt.edu
>> Date: Tuesday, January 12, 2010, 11:09 PM
>>
>> On 1/12/2010 10:52 PM, Tony Drews wrote:
>> > Anyone have info on dimensions for TR-4 main cap bolts? The
>> manual shows 1/2" UNC but not the length. I'm trying to figure
>> out what ARP bolts you would buy to replace the stock bolts, and
>> also one that's 1/2" longer to allow for "strapping" the center
>> main. If I had the dimensions (length) I could try to cross
>> reference the engines that ARP lists main cap bolts for.
>>
>> Tony, 3.5 inches under the head. I can give you the ARP number
>> tomorrow, but don't have access to my build log right now.
>>
>> jim
>>
>>
--
Jim Hassall
Blacksburg VA
'63 TR4 in autox preparation
99% finished, 90% to go
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