Any one know where I can get new exhaust manifold studs for my x-flow on-line ?
My local motor factors claim they cant get them cause the engine is too old.

I think they are 5/16 unf one side and 5/16 unc the other

TIA

Richyo

You are correct, I had the same problem, I have just used 5/16 UNC on both sides of the stud with matching nuts, easier to source

From here
https://www.burtonpower.com/default.aspx

Cheers Wicket and Ham

Wicket, I had a look at the web site but can't find them. Could you point me in the right direction. I'm at work so can order on-line but if I phone the boss gets abit narky

Cheers
Richyo

u dont need studs... ordinary 5/16 cap screws are excellent and give you great access.
Cheers

Thanks all
Found them in Burtons

If anyone is interested part codes as follows

Inlet studs FL840
Exhaust studs FL839
Brass nuts NB516F

Richyo

Brass nuts?

Brass expands more than steel so when hot they may come loose! I know they don't corrode like steel but dissimilar metals and moisture will cause chemical reaction and in this case it would erode the steel studs... just thought it may be worth mentioning.

Brass nuts on galvanised studs do not corrode a great deal as brass is an alloy of zinc and copper and the galvanised stud is zinc externally hence not that dissimilar. Also the exhaust manifold tends to be fairly moisture free as its bloody hot. Clamping force is not lost as the brass expands in all directions, including into the thread form. Usually a bit squeaky when you take them off after a while though.