Decent exhaust manifold bolts

Decent exhaust manifold bolts

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Discussion

brett84

Original Poster:

1,291 posts

153 months

Tuesday 15th April 2014
quotequote all
Evening All

I've been reading posts on here and elsewhere about ideas to stop the exhaust manifold bolts working loose but has anyone actually used any or have a tip on what to do?
I've tried ARP bolts and nord locks but I don't think the ARP bolts are long enough really and still work loose.
Like the stage 8 - http://www.stage8.com
or http://taylorvertex.com/vibe-lock/
maybe even just some standard decent length bolts with nord lock and thread lock?
I'm just not sure what peoples experience is and what's best. I'm not sure if there is enough room to fit the above?

pwd95

8,383 posts

238 months

Tuesday 15th April 2014
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Had success with Nordlock & split washers. The trick I found was to spend the weeks after installation nipping them up after every heat cycle/run out. You have to keep nipping them up & they eventually stay.

brett84

Original Poster:

1,291 posts

153 months

Wednesday 16th April 2014
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after some more reading, i'm going to try some high temp thread lock, use ARP bolts for the hard to reach underneath ones and slightly longer allan bolts for the top ones. Hopefully this will work out, one way to find out.
The exhaust bolts are 3/8" and 1 1/4 long apparently

HENRYKS CHIM

590 posts

158 months

Wednesday 16th April 2014
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Hi! Brett.
Just incase
Ive just purchased the ARP bolt set and nordlocks from ACT.You dont use the washers supplied in the bolt pack, just the nordlock washers which are suplied as pairs. this allows the washers to bite into the head of the bolt and the exhaust flange face. Use copperslip on the threads to stop corrosion between s,steel and alluminium.The thread size should be 3/8 unc
trust this helps