GT spare wheel hold-down bolt thread

Technical MGB discussion
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1340fxd
Posts: 27
Joined: Thu Mar 02, 2023 6:04 am
Forename: Rene
Surname: Chinnery
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GT spare wheel hold-down bolt thread

Post by 1340fxd »

Does anyone know the thread of the bolt that holds down the spare wheel in an MGB GT please. It is clearly not metric!
10coupe
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Forename: Neal
Surname: Powell
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Re: GT spare wheel hold-down bolt thread

Post by 10coupe »

Hi, I believe it's a 3/8" UNF thread
hope this helps
Neal
1340fxd
Posts: 27
Joined: Thu Mar 02, 2023 6:04 am
Forename: Rene
Surname: Chinnery
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Re: GT spare wheel hold-down bolt thread

Post by 1340fxd »

Many thanks Neal
Not_Anumber
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Joined: Tue Sep 22, 2020 9:33 am
Forename: Chris
Surname: S
Location: UK

Re: GT spare wheel hold-down bolt thread

Post by Not_Anumber »

I have inverted my spare wheel to provide more storage space. The new shorter retainer is now a bolt with a piece of metal bar welded to it's top to make it easy to undo by hand.
1979 MGB GT
1999 Jaguar XKR
2003 MG TF
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