TOPIC:

Well, someone else will agree with me if I'm right, otherwise I'm wrong.

Didn't anyone notice anything funky about that oil pump?

Nelson wrote:

Is this wheel supposed to have teeth on it?

that idler did not have teeth to start with.those notches are worn into the rubber wheel.does it have any cracks?

leon

it is not uncommon for those cam bearings to not line up exactly with holes.they have been and will be just fine.

enlarging the holes may give you piece of mind but that is probably all.

leon

Thanks I'll look at the idler to see if it's cracked. If no cracks it's OK to run, right?

Larry what's funky about the oil pump?

as long as ther are no cracks or signs of deterioration you can still get some miles out of it.does it still roll smoothly?
no side to side wobble?

leon

My clay test showed valve piston clearance IN 1.91mm, EX 2.9mm. Those are the smallest measurement of the 8 I got.

Smallest deck height measurement was .35mm.

Got the cylinders off. No fin damage or other nonsense like that...

I was NOT happy to see that a bunch of dirt apparently got in around the studs and ended up in the bottom end!

I took this pic to remind me about the rubber pads that go under the gasket. No the missing one did not fall in.

I wasn't really sure if I was going to take the bottom end apart, but now that it's dirty and I want to replace the cam chain I guess I will.

The base gasket appears to be made of some type of rock hard industrial epoxy! Or maybe concrete! This may take a while...

Leon, the wheel has fine, hairline marks (cracks?) on one side. No slop. I imagine it's fine to run, but not really sure. Guess I should get a new one. I think I saw it for $86 someplace, seems pretty steep for a rubber wheel... I'll have to check a few sources. I may be low budget, but I do want to do things right while I have it apart.

larrycavan wrote:

Didn't anyone notice anything funky about that oil pump?

Anyone??

PLUMMEN wrote:

DoubleDub wrote:

Nelson wrote:

Seems odd that the bearing hole doesn't line up with the passage. Should I enlarge it to line up? Of course I'll probably be puttin in new bearings, but if those don't line up should I enlarge them?

Looks to me like it was swapped from another spot or another bike. I think those were specific to bike/location due to manufacturing methods?

thats what is commonly refered to as mass production!

More of a case of improper installation IMO. That bearing isn't all the way over where it belongs.

Oil pump looks like it's got a metal tag on it I have never seen that inside any 900 / 1000 motor. Might be fine but I'm thinking it was remanufactured or something. Obviously the top end was getting oil.

I'd shit can all those old cam chain rollers and pillow blocks. You're talking some $$$ but it IS the right thing to do. Cam chain too..... do the works and be done with it if you can raise the capital

You'll see budget racer throw that old junk right back in their motors. Who cares, it's only going 1/4 mile at a time and the truck's back at the other end of the track This is a street bike....'nother animal altogether

If all the cam bearings look like that, just lightly smooth them with a piece of 1000G paper. Then rinse and wipe with a paper towel. If you pull the valves out, clean everything up and put the cams in [oiled journal and bearings] & spin them to see if they spin nice and free.