thread taps

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Nov 19, 2001 | 12:49 PM

Turbo-Jet

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Melting Slicks

Joined: Feb 2000

Posts: 3,052

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From: Vancouver BC, Canada

thread taps

what are the most common sizes found on an engine? i want to buy some bottoming taps to chase threads.

1/4-20
5/16-18
3/8-16
7/16-14

fine pitch ever used?

Nov 19, 2001 | 12:51 PM

norvalwilhelm

Race Director

Joined: Nov 2000

Posts: 11,872

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From: Waterloo ontario Canada

Re: thread taps (Turbo-Jet)

Fine are not normally used and the only place I can think of is the rocker studs and the carb studs.

Nov 19, 2001 | 01:03 PM

MikeC

Melting Slicks

Joined: Dec 2000

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From: Union Ontario

Re: thread taps (norvalwilhelm)

Fine threads are used to bolt the flywheel to the crank, but in most cases would not required chasing the threads.

Nov 19, 2001 | 01:57 PM

Gordonm

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Joined: Dec 1999

Posts: 19,610

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From: Forked River NJ

Re: thread taps (MikeC)

Just used one last night for the ring gear. 3/8-24. Not many going to go in there but I try to clean out all threads before reassembling anything. The torque figure is going to be more accurate and assembly is easier. Also the bolt in the front of the crank is fine thread for holding the balancer on

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