Topic: Extracting fin spacers

[the-chauffeur]

Hi all - long time lurker, first time poster . . . go easy

I've bagged myself a '72 CB750(K2) which, for what I paid for it, was in pretty good condition (bearing in mind that no matter what condition they're in, big pre '73 bikes are quite expensive in the UK because they're classed as historic vehicles and are exempt from road tax).  It's almost complete, although it was stipped within seven hours of me picking it up, so there's not much to see right now.  I've had it for two weeks now and so far, the frame's powder coated and the engine is apart awaiting dipping and respraying.

Before I get the engine dipped, I've got a couple of questions about the little rubber fin spacers on the cylinder head.  It seems that no matter what I do with them, I can't extract them without tearing either the top or bottom locating lugs.  Is there a trick to it or am I just stuck with yanking 'em free?

Following on from that, what (if anything) do you guys use as replacements?  Looking at the mrcycles.com microfiche, I'm gonna go bankrupt if I buy 'em from Honda direct - assuming they're still available.   

Thanks for the help.  I'll get some pictures up when there's something worth seeing . . .


Neil

[KB02]

When I pulled mine, some tore, some didn't. Basically, you have small piece of hard rubber that has goten harder with 30 years of age and engine heat. You could try pressing the butt end of a drill down on one side or the other to help free it, but that would leave the other side to be damaghed on it's own.

There must be other products that can be used in their place if you don't feel like paying the $3.xx a pop for them that www.crotchrocket.com wants to charge for them.

[rhos1355]

I left mine in, had the casings, barrels and head sand blasted and then vapour blasted and it did'nt seem to do them any harm. Mind you I haven't a clue what they're there for?

[tonycb650]

 I think they were added by honda to reduce vibrations.

[754]

Try oiling them..

Push them back with a piece of wood or a comb, shoot oil or MD40, they should come out..

They are there to prevent fins from ringing at certain RPM,s

[bryanj]

At one time ifyou bought a Vesrah gasket kit you got a whole load of new ones to throw away

[the-chauffeur]

Thanks folks

That note on the Versah kit is interesting - I've just ordered one of their complete kits, so I'll let you know what's in it when it arrives.

I'm really hoping they're in there . . .

Neil

[Gamma]

3 dollars!!!!!!     3 pounds sterling from Davesilvers uk!!!!!!  Slide the new ones in with grease.

[markjenn]

They do quiet the engine down some.  If their is nothing wrong with them, I'd leave them alone.  They'll survive bead blasting and cleaning.

- Mark