----- Original Message ----- From: Brian Hoover <[EMAIL PROTECTED]> > > I have an early engine #1010918 that I pulled out of a 1975 F1 frame. The > engine was stuck. When I removed the head I found a little 6mm cam holder > nut stuck in an exhaust valve. I'll guess that this was the reason for the > freeze. I assume the head is from an F1 because it had the factory F style > 4 into 1 exhaust . The exhaust flanges are different the earlier K models > and won't except a factory 4 into 4 setup, right?
The exhaust flanges are interchangeable, simple bolt on and off. > If anyone knows how to distinguish between head types, I would love to > trade this perfectly good F1 head for a comparable one to fit my early > engine. I can send pics. The difference between very early and later heads is that the later used tube type seals around the studs and the holes were machined to accept steel sleeves. I also seem to recall that the K0 head had one 6mm bolt less than the later ones. Easy way is to change heads and barrels. Later heads also had a removeable oil spigot under the cam tower whilst the early ones were fixed. i.e. all of the later heads up to K7 and F2 are interchangeable and will even fit the very early models if you use the corresponding barrels. Regards Paul H
