block change

[billy budge]

Evening all

I will be changing my old buggered block for a decent second hand one very soon, I have already checked its vital signs and all dimensions are spot on.

I was just wondering if anyone can suggest any parts that are worth changing while im there, obviously I will being doing piston rings and gaskets etc, but im sure there are other bits to do also. The engine has only done 14-15,000 miles from new.

Cheers muchly.

[Mincehead]

As it`s easy to get out while you are doing the engine work, check the cam chain and tensioner / blades too. TRX`s seem to be bug*ers for stretching cam chains within quite short mileages.
I think if my addled memory serves me correctly, another member posted somewhere the new `unstretched` length of a cam chain here on the forum.
I think the number of links and type are quoted in the downloads section but not certain if an overall length is given.
Easy enough to measure a new one, just use a piece of string laid along it as the cam chain is a hyvo / endless type.

http://www.wemoto.com/bikes/Yamaha/TRX_ ... Chain_DID/

You `may` find them cheaper if they are other makes but DID is a good quality chain.

[phuk72]

You may find it doesn't need rings but as Mince has said, while you've got it stripped down that much you may as well check the cam chain / tensioner.

Other than that, you could check for any slop on the crank bearings and damage to the cams. Valve clearances are a given.

I personally would also have a look at the oil tank - you'll be amazed how much sludge builds up in there.

That should keep you busy

[billy budge]

Thanks men for the info, most helpful. Thanks heaps.