Clone header bolt

hookm · 07-11-2012, 04:54 AM

I've asked a couple of friends on here & thought I'd ask everyone.I removed a header bolt on my 420CS clone & the threads came out with it.Should I try tapping it,heli-coil, or what.It's a 340 head but probably doesn't matter,I got to get it fixed before the 19th.thanks

hookm

roady89 · 07-11-2012, 05:04 AM

Heli-coil if there is enough there to do it. Might as well do them both. Don't use stainless bolts, use at least grade 8 with some anti-seize. Run the engine, get it Good and warmed up and re-check them.

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hookm · 07-11-2012, 05:08 AM

Thanks Roady,haven't checked for room yet,I can put the stock head back on if I have to.

Dave in VA · 07-11-2012, 07:33 AM

I got to get it fixed before the 19th.thanks

hookm

Sure hope so.

Is this the same head that you had problems with last time?

hookm · 07-11-2012, 11:57 AM

Quote:

Originally Posted by Dave in VA

I got to get it fixed before the 19th.thanks

hookm

Sure hope so.

Is this the same head that you had problems with last time?

Yep,same one,I'm going to try to fix it this afternoon,if I can't I'll change the head

07-11-2012, 04:54 AM	#1
hookm Younger Than Dirt Join Date: Aug 2007 Location: North Myrtle Beach SC Posts: 2,047	Clone header bolt I've asked a couple of friends on here & thought I'd ask everyone.I removed a header bolt on my 420CS clone & the threads came out with it.Should I try tapping it,heli-coil, or what.It's a 340 head but probably doesn't matter,I got to get it fixed before the 19th.thankshookm

07-11-2012, 05:04 AM	#2
roady89 nimda Join Date: Jun 2007 Posts: 13,022	Heli-coil if there is enough there to do it. Might as well do them both. Don't use stainless bolts, use at least grade 8 with some anti-seize. Run the engine, get it Good and warmed up and re-check them. Sent from my EVO Shooter using Tapatalk 2
roady89 nimda Join Date: Jun 2007 Posts: 13,022

07-11-2012, 05:08 AM	#3
hookm Younger Than Dirt Join Date: Aug 2007 Location: North Myrtle Beach SC Posts: 2,047	Re: Clone header bolt Thanks Roady,haven't checked for room yet,I can put the stock head back on if I have to.

07-11-2012, 07:33 AM	#4
Dave in VA maintaining a low profile Join Date: Oct 2009 Location: SW Virginia USA Posts: 6,314	Re: Clone header bolt I got to get it fixed before the 19th.thankshookm Sure hope so. Is this the same head that you had problems with last time?

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