Exhaust manifold fittings

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roymck
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Exhaust manifold fittings

Post by roymck » Thu Feb 14, 2019 4:57 pm

Ok what’s your preference for manifold to head fittings . Getting the passenger side manifold off made me remember swear words I thought I had forgotten . So is it ...
Studs and nuts , socket bolts , or just bolts and is it worth going to stainless fittings as well?



Rev Light
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Exhaust manifold fittings

Post by Rev Light » Thu Feb 14, 2019 5:09 pm

I tried to use studs and nuts recently, when I had my engine out if my 5a. I could not get my tubular manifolds onto the engine due to clearance issues. So I went back to bolts to secure the manifolds to the engine.

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Exhaust manifold fittings

Post by b.c.flat hat » Thu Feb 14, 2019 5:41 pm

I used hex-headed s/s bolts and s/s spring washers, previously mild steel washers but they corroded away allowing the manifolds to blow!

I think they're 5/16" unc x 1", I'll check tomorrow.



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Coupe Racing
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Exhaust manifold fittings

Post by Coupe Racing » Thu Feb 14, 2019 6:10 pm

Stainless cap head bolts for me


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David Tew
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Exhaust manifold fittings

Post by David Tew » Thu Feb 14, 2019 6:30 pm

Coupe Racing wrote:
Thu Feb 14, 2019 6:10 pm
Stainless cap head bolts for me
Works for me too. They are 5/16".


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DARK STAR
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Exhaust manifold fittings

Post by DARK STAR » Thu Feb 14, 2019 8:35 pm

I'm not a potential customer :mrgreen: but from recent experience with a 2,8 ( which has less screws to fit :wink: ) I would say definitely stainless cap bolts.


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Exhaust manifold fittings

Post by windy » Thu Feb 14, 2019 9:22 pm

These people are good to deal with;
https://www.gwr-fasteners.co.uk/516-unc ... 7607-p.asp



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Exhaust manifold fittings

Post by derekoss » Thu Feb 14, 2019 10:14 pm

Make sure you're using A4 stainless as it's stronger. Boat people have them.

Derek



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Exhaust manifold fittings

Post by gtcse8 » Fri Feb 15, 2019 8:50 am

Roy
What flange thickness is the headers and what length are the original bolts?.
Last edited by gtcse8 on Fri Feb 15, 2019 10:48 am, edited 1 time in total.


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Exhaust manifold fittings

Post by gtcse8 » Fri Feb 15, 2019 8:52 am

DARK STAR wrote:
Thu Feb 14, 2019 8:35 pm
from recent experience with a 2,8 ( which has less screws to fit ) I would say definitely stainless cap bolts.
M8 of course Chris :wink:


Mark Wilson. See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Three Se5a, Se6a, Two Se6b`s,1 & 1/2 GTC`s & not a lot of sense
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Exhaust manifold fittings

Post by roymck » Fri Feb 15, 2019 12:38 pm

gtcse8 wrote:
Fri Feb 15, 2019 8:50 am
Roy
What flange thickness is the headers and what length are the original bolts?.
Tubular header so gone for shorter cap headed screws in stainless , there on there way .



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