M12 headbolts
08-01-2015, 01:05 PM
#1
Too many posts.. I need a life!!
Thread Starter
M12 headbolts
Hi ,
Does anyone know the pitch of cosworth M12 headbolt? cos I need to clean out block threads with a tap prior to putting the head back on.
Cheers.
Tim.
Does anyone know the pitch of cosworth M12 headbolt? cos I need to clean out block threads with a tap prior to putting the head back on.
Cheers.
Tim.
08-01-2015, 01:10 PM
#2
PassionFord Post Whore!!
09-01-2015, 10:37 PM
#6
Pretty sure they're standard M12 ? ie 1.75...but I could easily be wrong.
And you shouldnt really use a tap. Either use a thread chaser type tool or get an old bolt and grind two sides flat and use that.
Taps will cut away slightly at the threads no matter what you do so should be avoided unless absolutely necessary.
And you shouldnt really use a tap. Either use a thread chaser type tool or get an old bolt and grind two sides flat and use that.
Taps will cut away slightly at the threads no matter what you do so should be avoided unless absolutely necessary.
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