New guy with a question for the masses of this site. I am about to purchase a '99 S3 that broke the rubbing block(?) I assume is what it's called that timing chain runs against. The plunger is fine but obviously it jumped timing and made a mess. I have zero knowledge of these engines: is there an after market piece that is better than original or should I just go back stock? Thanks and look forward to you riders input.
Timing chain rub block
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I think everyone on this site will tell you that this is an extraordinarily rare thing to happen to a Speed Triple (Or any Triumph for that matter.) I don't know anyone who's had a problem with a Cam Chain Tensioner at all.
That said, I doubt very much that there is an aftermarket part available for this application. It looks like buying a stock part from a dealership is your only option.
Due to the fact that this is a rare occurrence I would look into the possibility of a maintenance error causing the problems you stated. I have a suspicion that some ham-handed thumb-fingered mechanic didn't reassemble the thing properly after a valve adjust. This is something to consider before purchasing.
That said, I doubt very much that there is an aftermarket part available for this application. It looks like buying a stock part from a dealership is your only option.
Due to the fact that this is a rare occurrence I would look into the possibility of a maintenance error causing the problems you stated. I have a suspicion that some ham-handed thumb-fingered mechanic didn't reassemble the thing properly after a valve adjust. This is something to consider before purchasing.
Crash, thanks for your reply. Your suspicion is right on the mark. The owner had just had valve adjustment done; obviously not correctly. I have (6) bent intake valves to prove it. Pistons look good; bike only has 10k miles.
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On 2007-01-21 17:09, Timan wrote:
Crash, thanks for your reply. Your suspicion is right on the mark. The owner had just had valve adjustment done; obviously not correctly. I have (6) bent intake valves to prove it. Pistons look good; bike only has 10k miles.
ouch. unnecessary wear on those connecting parts. might want to check lifters too.
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Ouch. That's too bad. I had a buddy did something similar. Took his bike to a guy with no Triumph experience. The bike hasn't been the same since. Unfortunately it's probably a total loss at this point. Maybe.
At this point for you I would suggest a complete replacement head, just to be safe.
It's silly too, because that bike is easy to do a valve adjust on. The cam chain should never have been disturbed.
Good luck with that.
At this point for you I would suggest a complete replacement head, just to be safe.
It's silly too, because that bike is easy to do a valve adjust on. The cam chain should never have been disturbed.
Good luck with that.
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