Cam carrier damage.

[royhall]

Hi. Just putting the top end back on an F2. Whilst cleaning all the parts and clearing out the oil drillings, I have found some damage to one of the journals on a cam carrier. The oil feed hole was partially blocked and that I assume was the cause. I have dressed the journal lightly with very fine wet & dry and there is definite scoring evident. How much damage can be safely accepted on this part, and if replacement is required would I have to replace both carriers and the cam? Cheers.

[Trigger]

Need some close up photos to see how bad it is or, how not bad it is.

[Bryanj]

You can replace just one carrier if needed, as to repair way back when we had a man who bored out the carrier and madw bronze half bearings which were pegged to stop rotation

[royhall]

Have included a photo, hope its clear enough. Its the journal on the right hand side, the end float journal. Have cleaned it up with very fine wet & dry (absolute minimum) and checked with engineers blue (full contact with just the scores not bluing). If you run your finger nail across it, fine scores can be felt. Made the decision earlier to go ahead and assemble the engine which is now done. The engine turns over with a socket very freely with nothing binding. All the oilways have been run through with a guitar string, carb cleaner jet, then compressed air. Fingers crossed it will be okay. The decision was made easier because there is a frame kit fitted to the bike, so I can strip the top end in situ. Hope its all okay though. What do you think? Cheer Roy.

[Bitsa (Ralph Wright - RIP)]

Hi
Have to say the inner is good but not  happy with the outer if it were me change it.Whats the cam like?The same?
Cheers
Bitsa

[royhall]

The cam is actually very good. But it would be as its much harder than the soft alloy, and its not picked up at all. Are these carriers still available new, as an eBay item may be no better than mine. If it needs changing now's the time I guess whilst its still on the bench. Cheers.

[royhall]

Anybody got a good quality spare cam carrier with caps (12010-410-000) that they are willing to part with for some cash. Would be greatly appreciated. Thanks.

[bike-pusher]

What was that company that used to metal spray surfaces like that, and then machine them down?

Joy Engineering?  Think they went bust.  Must be someone else....

[Bryanj]

Don't think you can metal spray alloy, how much clearance is there on the bearing--platigauge is probably the only way to be certain. I would be tempted to modify the clearance and run it, if you want to call me on 07795162623 any evening Sunday to Thursday incluse AFTER 8pm when i am at work I will give you some ideas. Don't with hold your number or i won't answer!

[royhall]

Thanks Bryan will give you a ring Tuesday after 8pm. Cheers Roy.

[royhall]

Bryan. Many thanks for your offer to help on my cam problem. I have this morning managed to find a good quality replacement carrier complete with caps on American eBay. And for the princely sum of £27 plus £29 P&P, a good price I think. So that will be going on as soon as it arrives, and hopefully problem solved. Thanks again for your help.

[Spitfire]

You did well there, they are no longer available new, and when they were they went for silly money.

Cheers

Den

[hairygit]

Really hurts when the p+p costs more than the part! Also, you may get charged  import duty, plus V.A.T. on the cost of the part AND the postage, then Royal Mail will charge a handling fee on top of that!

[Bitsa (Ralph Wright - RIP)]

Hairygit
You have hit the nail on the head there mate there some wicked bargains from the states but the post costs do not make them wicked anymore.So far so good for me not been hit with import duty yet but I am sure I will cop it soon.It seeems to work if you keep it to the old way IE duty free I keep it below 200 euros and touch wood OK.Used items don't seem to matter but new oh yeah.
Cheers
Bitsa

[hairygit]

Bitsa, it's £15.00 in Britain, anything more than that can attract import duty, plus 20% V.A.T. on original cost AND postage. I got caught out last year, my bargain front caliper for my 750F1 from the U.S. went from a £25+£10 post to nearly £70.00 by the time it arrived at my door And 3 days after it arrived, D.S.S. had new replica bodies in stock for £49+V.A.T., typical!