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Old 13th June 2020, 06:27
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Originally Posted by DerbyDreamer View Post
Just missing the bolt to hold it to the manifold so thought I would check with the wise before I knacker the thread - a 1/4 UNF only goes in one turn so I'm thinking UNC for castings?

Hoping someone will know....

Hi Richard, I can't find an exact reference for the accelerator bracket bolt specification, but it's likely to be the same as on the Spitfire. That uses two HU755 setscrews, which are 1/4x5/8 UNC. That would explain why your 1/4 UNF jams in the thread.

Rimmer Bros. have them in stock at 37p plus 13p for the locking washer -
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