Morning All,
First time posting, I'm looking to weld up a log manifold for an M40 (I know its the inferior engine but hey ho).
Does anyone have a diameter for the exhaust ports?
Saves me the hassle of dropping the exhaust before I order the pipe.
Cheers,
Dan
M40 Exhaust Port Diameter
Moderator: martauto
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martauto
- E30 Zone Team Member
- Posts: 6206
- Joined: Wed Aug 31, 2005 11:00 pm
- Location: leeds
Welcome to the zone Dan, sure enough someone will come along to help you mate. 
Mart.
Mart.
Only the E46 cab left now.
Just got too old.
Just got too old.
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stones
- E30 Zone Newbie
- Posts: 53
- Joined: Tue Nov 13, 2018 12:10 pm
Not a direct answer but you could get a exhaust manifold gasket and use the measurements from that.
Also a good guide if you plan on opening up the ports a tad.
HTH
Also a good guide if you plan on opening up the ports a tad.
HTH