Honda-SOHC

Sounds good, any pics for us to have a look at it?

They are a bit different to modern stuff, much longer and harder to change direction. They need some persuasive pressure that would have a newer race-rep straight upside down if used. It's much more like a big bore moto-crosser in that it's a lot of footpeg weighting and big pull of counter-steer to deviate it from straight ahead at speed, respectably quick though.

We had a small guy owned one early 80's and with ad-hoc drag racing (ahem, not on the public highway officer!!) that F2 would beat most things in it's era till CB900 Suzuki GSX etc came around.

Hope you enjoy it.

Here's a slightly different angle on it which may explain some of the experience old-v-new gaskets etc.

This era or production has covered the removal of asbestos from head gaskets so any original specs that used it would have to have been re-formulated. Commonly they went from asbestos to graphite and one of the characteristics that changed was it was more common for liquids to creep through the new ones, making it common practice to have a sealant where none was needed prior to this.

Graphite type gaskets also need retorqueing on some arrangements also and this is never part of the plan for SOHC 750 motors due to the need to remove from frame to work on. I'm guessing this but it may be why they are more succesful with sealant with the types available now both Honda and pattern.

There is a piece written in current "Classice Bike" along these lines, not specfically dealing with this application but if you overlay the info contained with our experience and the timeline involved I think you can form a more thorough resoning as to the use of sealant or not.

I guess this impacts many of the bikes on here.

Thanks for the effort of posting all that, really good. Seems that you had a good weekend out.

I guess I should say Cheers!

Hope you've got it with that, it's nice when they run well and you know you can get a reliable run out on it.

Didn't put enough detail in last post but the question about how big a skim has an impact on cam chain tensioner also as the total shift is doubled (2 runs of chain, up and down) so the tensioner will reach max tolerance earlier in the chain wear cycle.

Be interesting to see how you get on as I've never worked on one with a skim to my knowledge.

I'm not sure if this will be suitable for your timescale and don't know if they are still going but:- there was a company called "PRECORIL Seals" in Frimley that I've bought o-rings from to my spec years ago and they just seemed to specialise in this stuff. I lived near there and just went in with examples that they matched so they don't specifically do bikes but in depth application of seals.

Will be going past there this week so will look them up if I can't find on www.

Kawasaki's new anti-lock brakes really played havoc with the wheel design.

But really why would anybody spend part of their life doctoring a photo to look like that!! I can think of better thin...........................................