Interchangable parts?

[mortisha]

why not get your crank case welded?

[stewart]

I should probably get a new crank then. There may be somethin wrong with one of my crank wheels. I had .003 runout directly over the pin when I first checked the wheels after pressing.. and the pin pressed much easier in one side 8ton vs. 12ton..

Not sure what your measuring over the pin, do you have a dial indicator on the crank wheel? It would not suprise me that they would be off .003. I think Stewart was chucking them up and truing them, but the measurements you need to be concerned with are on the bearing surfaces, I have a set of ways with precision bearings that I use, but them I've used V blocks and Lathe centers as well.

Thinking about it, the crank wheels do have a center on the inside, so they could be chucked up and trued to the rotating points, that would probably help make the motor run smoother than just truing the crank.

Stewart, are you truing the crank wheels in a lathe?

we are putting them in a od grinder between centers

[ihampson]

Hi mortisha, I know i coud get the case welded but it`s gonna look bad and there is damage to the other side casing aswell as the rear mounting has a big piece missing on the left side. it would also be easier to fit the new (`89) barrel to a newer crank case, rather than having to do more work to a case that is already a mess. And the bike is also a `89 bike with a `87 engine so would be making the bike something like original. That said, newer cases havent been that easy to find and definately not at a reasonable price so i could well end up rebuilding the old set and just keep my out for a cheap case and transmission. Am just looking to get it running again (cheaply) and then restore it to its former glory as i go along.

Managed to seperate the cases, had to get a better puller than the one i had and that still struggled. The bearing/crank/case were really tight together. maybe it had got too hot sometime or just hadnt been apart for AGES! My money is on both! No nasty suprises inside, the selctor drum and forks are worn but not too bad so i am gonna re-use them and see how they perform. Now that the engine has been apart once it shouldn`t be too hard change them afterwards. plus i will need different ones if i do change the casing so dont want to waste any money because i have got my eye on a kdx125 for the girlfriend.

Took her out on my dr650 on sunday and its too tall and heavy for her, (it weighs about 2 ton but goes up hills like nothing else!) and the 250 will (hopefully) be too fast to learn on. Does anybody know if a 94 kdx125 is suppose to have a rear drum brake? The one i`ve seen for sale has and i`m sure it shouldnt. am going to look at it in the next few days and want to be sure what year it is.

[mortisha]

Hi, if you want I can send you email of guy who did some case repairs for me, his work is 1st class, looks good and he is cheap.
where did you get the 89 topend from? ebay at a guess

[ihampson]

That would be good, thanks mortisha. Yeah the barrel came from ebay, small world eh? Where is this welder guy from?

[mortisha]

The guy is from monmouth. If you want I can pm you his email. If you send photo of what needs welding he will give you a price and you pay return P&P.