My project

[tbus93]

Don't have an owners manual should probably order one didnt expect a step by step nobody got time to do that

[tbus93]

Update from my project got my case clutch cover stator cover gaskets new crank bearings ordered esr 310 big bore and billet flange 39mm pwk carb and all new seals kit on order ready to start my rebuild to bad I have drill this weekend would knocker out then

[weedan01]

You might be able to braze the pipe up.

[tbus93]

motor finally gave found out its got a hot rods crank in it but its a short rod so gonna replace that when the person before me rebuilt the motor something wasn't done right wasn't any dowds on the stud and it was ported

[weedan01]

That's quite an ugly piston

[tbus93]

Very cylinder walls weren't destroyed at all crankshaft is free

[yaegerb]

I've turned it and it makes no difference the carb is probably due for a rebuild I was just curious I know when I go big bore that I will need a new carb I know a 38mm won't run very well on a stock cylinder

FYI....I have a stock cylinder, no porting and an FMF fatty pipe. Just bought the 38 PWK A/S and it runs perfect

[tbus93]

Good to hear personally I know now it wouldn't have made a difference on mine was a matter of time before it blew up

[RIDE-RED 250r]

Yeah that's for sure!

If you haven't done it yet, I would still highly recommend getting your CB rebuilt and replace the CB carrier with a new billet unit...Would be a heck of a bad thing to do all the work you are and run the risk of having the CB or CB carrier let go on ya!

[tbus93]

I haven't started tearing in the motor I'm kind of sketchy about doing it now just because piston shattered and I want to have the crank rebuilt I want a long rod in it it's got a hot rods crank with short rod currently I will look into a cb and definitely on the billet carrier my buddy's 250r ha his break 3 months ago and he's got to have his cases hogged out now

[RIDE-RED 250r]

Just curious, why do you want to go long rod??

[tbus93]

I like the smoothness of my uncles long rod 310 big bore

[RIDE-RED 250r]

Well, there could be something to that. I can't say either way as I have never ridden an R with the long rod setup.

But I will say this, there are plenty of other things that could be worn and make an engine not seem to be as smooth.

But, it's all up to you

Make sure and post some build pics!

[tbus93]

I don't know if ill do the rebuild an pay a pro I would love to but with the piston shattering like it did I'm worried about damage in the case i ordered a manual before it blew up I did pull off the clutch cover though and all that seemed good

[RIDE-RED 250r]

Piston debris won't be present in the clutch/kickstart/CB (behind the clutch cover) area unless there is catastrophic crankcase damage.

If you end up doing the work yourself, you will get to know your engine very well, and that's a good thing.