Do you guys use "Lock Tite" on these?

I took the Carrera 6 flywheel off the '65 to replace the pilot bearing. Do you guys use "Lock Tite" on the 6 flywheel bolts or just torque them without?

Thanks,
John

Funny you should ask. Just a few weeks ago I put a set of new flywheel bolts in using Blue Loctite 242. Wayne Dempsey's engine rebuilding book recommends Red Locktite but I'm afraid of that stuff--I don't think disassembling those parts with a torch would be a good experience.

Wayne includes a warning that if you use significantly too much Loctite you might hydraulic lock the bolts and they'll bottom on a drop of Loctite rather than stretching correctly under the 100+ foot pounds. If that happens the bolt can fall out later.

I've put over 200 miles on the engine since the rebuild and it hasn't fallen apart yet!

I've used red loctite, on several, with good results.

A drop of Red 'locktite' on clean oil free threads. Impact gun them off with no issues.
Neat fly wheel:)

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Originally Posted by Fritz A. Ficke

A drop of Red 'locktite' on clean oil free threads. Impact gun them off with no issues.
Neat fly wheel:)

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I do it all the time. It also doesn't take a lot of heat to make them loosen up.

Tom

I thought that these are single use, fine thread bolts that yield when tightened properly, making Loctite, or any kind of locking device, unnecessary.

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Originally Posted by Tom F.

I thought that these are single use, fine thread bolts that yield when tightened properly, making Loctite, or any kind of locking device, unnecessary.

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Tom F. Every thing you said is true, But having seen the damage that can happen when they do comes loose make the "insurance " from the Locktite look cheap. Some times "tricks" like this are the things that make engines survive the, over rev, clutch scatter, etc. Basicly no down side and alot of protection. Fritz

Thanks guys...this helps.

John

Quote:

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Originally Posted by NeunElf

Wayne includes a warning that if you use significantly too much Loctite you might hydraulic lock the bolts and they'll bottom on a drop of Loctite rather than stretching correctly under the 100+ foot pounds.

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The fit of the screw threads in the crank is never tight enough to seal. Excess Loctite will squish out. This is a problem that doesn't exist. Unless you are using NPT threads on your flywheel bolts.

And you will feel the KAMAX screws stretch as you strive to obtain the required torque setting. It's a disconcerting feeling, when they go through the yield point-- it feels the same as a stud about to shear through-- very uncomfortable. But then you stop, put a witness mark on the screw, and you're done.