Thanks so much for the reply and the tech wiki article!
the only question i have left about it is what should i do about the random washers I have between the coil and the manifold body.. i.e the non weight side..

and is there supposed to be a little spring between the body and the coil thing?

are you supposed to be able to turn the flap by hand? because i most certainly can't!
Cheers,
Tom

Hi Tom, see Heat Riser

Hi I got sent a second hand exhaust manifold.. it is the flap type with the spring..

next to the spring are 2 washers that are moving freely and I was wondering what does the little bent bit at the end of the spring hook up to? I can't really see how it would work? any info/pics would be most most appreciated!

Thanks,
Tom