Check your timing chain
Posted June 08, 2005 - 01:12 AM
Barrel is also pretty shagged. To cut a long story short, I just ordered a compete crank assembly, main bearings, 444cc piston and a new clutch basket. Barrel goes away to get bored and replated tomorrow. So now the only 'old' bits will be the gearbox (rebuilt a year ago). So, with 444cc on board, a ported head and YZ450 cam I reckon the ol' 426 will go pretty hard again
Posted June 08, 2005 - 01:22 AM
I've got a timing chain on order right now.
Posted June 08, 2005 - 03:01 AM
Posted June 08, 2005 - 10:02 AM
Posted June 08, 2005 - 12:45 PM
Posted June 08, 2005 - 01:23 PM
Posted June 08, 2005 - 02:21 PM
Posted June 08, 2005 - 05:21 PM
He thought you DIDNT know what it was and was replying. If you dont know what it is, then how do you know what it isnt? I suspect you are just hearing the gears banging. Common with straight cut gears. Does it the most under light to no load. I bet this is what you hearing as is normal. Usually its heard idling in neutral, pulling in the clutch makes it go away. This is the gear clash. Is this what you speak of?
Why would it need new rod bearings? It only has 325 miles on it and it has made the same noise since just after break in.
Posted June 08, 2005 - 05:44 PM
Posted June 09, 2005 - 02:58 AM
that post of mine was actually in response to the WR400.
I was only asking why it would need rod bearings when there is so little miles on it, that's all man. When I pull in the clutch it goes away a little but not all the way.
These engines have a very mechanical sound to them, due to the very thin case walls, especially if you have a quiet pipe. If you ever ride your bike without a helmet (slowly, just for the exercise) you will be shocked with the noises it makes!
Posted June 09, 2005 - 07:35 PM
I read in a post one time that the 98-00 had a fairly common problem with something in the bottom end I dont exactly remeber what but it was updated by useing a splined shaft instead of a whole with a pin through the shaft that worn loose over time.. I think they said it was an easy fix also... you might try a search on it...
My 00 wr400 makes the same noise.
It's like there is a loose bolt somewhere by the water pump or something?
Is that the noise you get?