[Fot] Main Cap Fasteners and Clutches - 1300

[Scott Janzen]

I can tell you the size for the GT6 bits, if they are the same.  
Studs are 7/16” x3-1/2” overall length, 20TPI. 
My ARP box is marked 206-5404 Triumph TR7 main stud kit.

On Apr 1, 2020, at 7:58 PM, Brad Eells via Fot <fot at autox.team.net> wrote:

Hello Amici,

Thinking aloud here as I have time on my hands. A couple of questions:

1. Main cap fasteners - ARP  does not make a main stud kit for the Spifire 1300 and does not list their studs by size either. If you have an ARP stud and nut set up, how did you order it? They have readily available a 7/16"x3" bolt for direct replacement of the OEM bolt.

2. Clutches - the vintage set up in my engines are a lightened factory flywheel, coming up just under 13 lbs with ring gear and a Borg & Beck clutch disc and plate. I've run 3 race weekends with the clutch that has been in the car for 43 years, so far without issue. I'm thinking I would like to stick with the flywheel I have with a good clutch solution. 

I know this one is a bit of a can of worms but have at it with your valued thoughts. I'm looking for simple and reliable. I am not nearly as smart as the aeronautical engineer that built the car.

I hope you are all safe and well...

Cheers,


Brad

Brad Eells
Chino CA
#72 FP 1969 Triumph Spitfire Mk3
#35 DP 1962 Triumph TR4
1965 Triumph TR4A IRS...for the road!


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