Exhaust bolt size

[Ambobeer]

Thanks to a loving previous owner I seem to be the proud owner of the only Surf with a one piece exhaust system.

As it's now blowing, I've got a nice new one to fit but; it has no bolts to connect it together 'cause you don't need bolts when you have a mig welder.

Went for a rumage in the shed and returned with a fist full of M10s but guess what????

Anyone know what thread they are before I get cross and break out the tap and die set? (or the mig welder)

[zem_41]

mine i think are a m8 thread with a 12mm head, but 13mm bolts fit just fine. are u talking about the couplers or into the head? as the manifold head bolts are completly different....

[Ambobeer]

No the ones that bolt the individual sections together. They have a 17mm head but they are not M10 even though they are close.

I've asked Barry @ Roughtrax and he says they are a standard exhaust bolt size that any motor factors ought to stock. We'll see about that one. They WILL be M10 come Saturday tea time if I get no joy.