sealant/loctite on flexplate to crank bolts? - LS1TECH

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sealant/loctite on flexplate to crank bolts?

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Old 04-20-2011, 02:11 PM   #1
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Default sealant/loctite on flexplate to crank bolts?

replacing my flywheel with an SFI piece, what should I put on the crank bolts?

red loctite on the converter bolts?

Tried a search.. thanks for the help!
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Old 04-20-2011, 02:46 PM   #2
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I would use red locktite. I think the bolts that came with the sfi flexplate should have some type of loctite on them. My TCI bolts do. But I'm going to try the tape loctite.
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Old 04-20-2011, 04:02 PM   #3
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yes red loctite, u dont want those coming out at high rpms!!!
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Old 04-21-2011, 08:43 AM   #4
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red loctite it is! Thanks guys!
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Old 04-21-2011, 09:01 AM   #5
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Rule of thumb....if it goes into steel loctite is fine, if it goes into aluminum, anti-seize is right. Since the crank is steel then loctite is cool. I tend to use the blue medium strength for most things. Never had a bolt back out using that.
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Old 04-29-2011, 12:03 AM   #6
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Quote:
Originally Posted by 01ssreda4 View Post
Rule of thumb....if it goes into steel loctite is fine, if it goes into aluminum, anti-seize is right. Since the crank is steel then loctite is cool. I tend to use the blue medium strength for most things. Never had a bolt back out using that.

yeah the red stuff makes for fun removal when you have to.
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Old 04-29-2011, 12:26 PM   #7
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Quote:
Originally Posted by 01ssreda4 View Post
Rule of thumb....if it goes into steel loctite is fine, if it goes into aluminum, anti-seize is right. Since the crank is steel then loctite is cool. I tend to use the blue medium strength for most things. Never had a bolt back out using that.
THIS... Red locktite just makes for having to use heat to remove it safely and not break bolts. I wouldnt use heat on any internal engine parts... Blue locktite is alot stronger than most think if the threads are clean of oil when applied.
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Old 04-29-2011, 12:36 PM   #8
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I didnt put any on my crank bolts. I actualy didnt think about it. They were all pretty tight threading in hopefully it will be ok. I did use blue loctite on tc bolts though.
OP if I was you I would use blue.
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Old 06-12-2015, 08:05 PM   #9
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Quote:
Originally Posted by senicalj4579 View Post
I didnt put any on my crank bolts. I actualy didnt think about it. They were all pretty tight threading in hopefully it will be ok. I did use blue loctite on tc bolts though.
OP if I was you I would use blue.
Digging this back up: do you need thread sealer too?
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Old 06-12-2015, 10:35 PM   #10
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I have never used a thread sealer on flywheel to crankshaft bolts and have never had an issue of them backing out. Just torque to specs, but it wouldn’t hurt anything if you want the added insurance of using a thread sealer.
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