SOHC.co.uk Forums > CB750

HEAD GASKET

<< < (2/2)

captaink:
Hi, I did order a 17 punch and it did work ( I hope )
I did this for my other cb750 I'm building but the 17mm holes are so close to the main fire ring it's worrying.
The Cometic gaskets as most contain metal and the punch soon loses sharpness.
Lets say it wasn't as good as I wanted but we'll see.
I can get a Forsetti gasket from Australia.
Options many !

K2-K6:
We'd make them out of two 1/2 inch steel plates that where dowelled for location then bored and reem the punch hole to desired size through both plates, then make a punch out of silver steel with concave curve to the face. This was heat treated to harden the cutting edge and hand ground (sounds like a waitrose food advert) to get the edge sharp.

It would cut gasket material and metal shim of copper, brass and steel with a very clean unburred edge and no distortion. The work material was clamped in between the die plates and with a hefty wallop, the punch would got straight through.

Bryanj:
I foresee no engineering problem with small spacers, except the original oil leaks that the seals were supposed to cure, as long as the adaptors are sealed in the holes BUT be careful with which cylinders you use as the later ones (F2 I think) had a different oil return path

westfieldandy:
I use the supplied gasket with the 836 kits from weiseco,  they all have the small hole which is a pain. I machine up a punch to recut the holes in a fly press.

works ok, but just time consuming.

Andy
www.good-bits.co.uk

Navigation

[0] Message Index

[*] Previous page