Kent 1600 8v F.Ford primary pipe diameter????

[knighty]

can someone tell me the exhaust primary pipe diameter used on the latest spec of the old 1600 Kent formula ford 8 valve engines, I'm told a good one produces about 110Bhp, I'm thinking thay are all 4-1 systems, it will be either:-

1-3/8" (34.9mm)
1-1/2" (38.1mm)
1-5/8" (41.2mm)

any help much appreciated

[heel'n'toe-no]

Give us a clue which pipe that is and I'll go and measure it for you.

[Triple J Motorsport]

The exhaust primary pipe is the pipe that comes out of the head

Do you want internal or external diameter ?

"I'm told a good one produces about 110Bhp" - about right, depends who you talk to!

FF1600 and FFDuratec are all 4-1 systems

FFZetec (FF1800) uses the standard road car cast iron manifold

[heel'n'toe-no]

Internal dims I have - 1 and 3/8ths inches.
External dims I have - 1 and 1/2 inches.

If my maths is correct this means thhat the pipes are made from 1/16th metal........I'll have to go and have a lie down now....phew.

Hope this helps :-)

[knighty]

thanks very much, your help is really appreciated! yes from your measurements the material is 16 gauge (swg) which is 1.6mm thick - you da man