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Threads

JonPiz

Donation Time
Can anyone tell me what was the main threads used on most of the bolts and nuts on an Alpine, was it UNF or UNC etc
 

Wombat

Donation Time
Mostly UNF, except for:

The threads in the alloy head which are UNC (EXCEPT the side cover bolts - UNF)
The threads in the thermostat housing - UNC again
The carburettor where there is a mix of BSF, BA and whatever else the carburettor maker saw fit to use.

May also be one or two other oddball pieces (BSP threads in the cooling system fittings etc)
 
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