[Fot] Spitfire 1300 Head Studs

[don at dcphotos.com]

I’ve used ARP on my 1296cc
When I screwed them fully into the block, there was
not enough threads coming thru the head. I called ARP
about this and they instructed me to back them out so there would be
(now I’m trying to remember this part) one or two turns of thread coming
through the nut. 

Now crazy about this, seems like a bandaid to back them out. ARP touts there
studs go deeper into the block increasing strength but I had to back them out in order for them to fit.

I torque them to 50ft/lbs.

Don




Message: 3
Date: Fri, 26 Jan 2018 15:21:18 +0000
From: D V <explore8 at outlook.com <mailto:explore8 at outlook.com>>
To: FOT <fot at autox.team.net <mailto:fot at autox.team.net>>
Subject: [Fot] Spitfire 1300 Head Studs
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What is the consensus on head studs for a 1300 race motor? I have read that the ARP set does not have the longer studs and that the thread length on the stud is longer than stock.

I have several sets of original that are in great condition.

Use stock 45lb torque or higher?

Thanks

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