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Exhaust Manifold Nuts Question


its55
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Either one would be suitable but given the cost differential, there's one clear choice.

$2.77 for  single nut is just stupid, even if it sports a BMW PN#.

Belmetric is a good source of hardware, I like to put together a shopping list and order lot of stuff at one time, cuts down shipping costs.

BELMETRIC.COM

Bel-Metric sells metric hardware & specialty automotive supplies nationwide. Visit our website to purchase metric fasteners, nuts, bolts, Time-Sert kits & more.

In this case, RogersTii has them beat on exhaust nut price

Edited by tech71
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You can get those narrow flange M8 copper nuts for a 10mm wrench/socket which will help you clear some of the tighter bends on your exhaust manifold or header.

 

Mark92131

 

797e82132801245f0e4d510dcceed09636845446
BELMETRIC.COM

Bel-Metric sells metric hardware & specialty automotive supplies nationwide. Visit our website to purchase metric fasteners, nuts, bolts, Time-Sert kits & more.

 

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27 minutes ago, Mark92131 said:

You can get those narrow flange M8 copper nuts for a 10mm wrench/socket which will help you clear some of the tighter bends on your exhaust manifold or header.

 

Mark92131

 

797e82132801245f0e4d510dcceed09636845446
BELMETRIC.COM

Bel-Metric sells metric hardware & specialty automotive supplies nationwide. Visit our website to purchase metric fasteners, nuts, bolts, Time-Sert kits & more.

 

good idea!

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2 hours ago, jimk said:

Since the nuts are not copper but copper plated, skip the copper plate and apply some Felpro C5-A high temp copper anti-seize on the studs and nuts.

But they're so pretty!

 

:D

 

If I recall, the copper clad exhaust nuts are "locking," so that may be good to keep in mind.

 

Cheers,

Edited by ray_
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I bought some brass ones off ePay.  They're 11mm hex stock that's been drilled and

cut.  They're awesome- sold for VW header applications, but they

also work great on 2002 headers, when there's not enough clearance for

that flange at the base.

 

Otherwise, for the stock manifold, the 12mm hex version is OK.

10 mm over an 8mm stud leaves 0.50mm, and that's just a titch... thin.

t

 

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On 10/11/2022 at 9:16 PM, cdn97986 said:

I just upgraded to the 318 style manifold gasket with integrated heat shield on my '75, and used these CRP ones from FCP. $0.39 a piece, worked great.

 

CRP-11621711954.JPG?1605815116
WWW.FCPEURO.COM

BMW Volvo Exhaust Lock Nut - CRP 18307620549

 

 

I was thinking of going w/ that gasket also but may go with the OEM metal heat shield instead, to get that "original look".

 

 

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