Timing case refurbishment.

[Damien]

I am going to change the timing chain on my 80g/s, and while I am at it, I am going to have the timing case refinished in powdercoat.

Is it OK to sand blast this and re powdercoat? I am concerned about the mating surfaces in particular, and any area which needs a seal or gasket.

Thanks, Damien

 

[newbuild100]

Yes, i had mine done many years ago. Its still ok.There isnt a gasket or seal in there anyway.

 

[(RIP) Arkwright]

There's a gasket under the timing case with two 'ring' gaskets at the top, no gasket under the timing case cover, but yes go ahead and blast and powder coat it although a good tough paint is better. If you paint it you can remove the paint on the side fins easier and without leaving a loose edge that water can get under if you break the powder coat...........................or paint them silver over the top depending on your need for originality!

 

[Rob Farmer]

I've been having them powder coated for years.

Nitomors, a fine paintbrush and a sharp knife will clean up the surfaces you don't want powder coating on. just paint a small amount of nitomors on at a time and watch it until the surface goes dull, then lift the coating off with the knife blade. If you try and scrape it off you will end up with the problems Arkwright mentions.

I haven't had any lift on me yet.

They look pretty good when the fins are cleaned up

 

[Damien]

Thanks for the replies.

While I am at it, I will have a look at the sprockets to see if they are worn. The engine has about 50,000 miles on it. I would doubt if they were ever changed.

If changing the sprockets, would I need a special puller or any other tools?

I will have a look in the Clymer manual later.

 

[(RIP) Arkwright]

I think the sprockets will do at least 3 times that mileage before you even need to think about changing.

 

[Box’a’bits]

Top one will wear, bottom one will take much more mileage

 

[Rob Farmer]

New top sprocket is £23ish if you don't change it with the camchain the chain wears very quickly.