Anything I should do while its apart?

[250RWANTER]

Okay, I just picked up an '82 250R, all original, from an old man who was the original owner.
Lost compression and from what I was told it was from it sitting for so long and the rings got stuck I guess.
I pulled it apart today and here is what I found:

http://community.webshots.com/photo/...49782243vaDAGc

http://community.webshots.com/photo/...49775450tLWUQE

http://community.webshots.com/photo/...49782336jzUdOW

http://community.webshots.com/photo/...49782548BfQapo

Does sitting for a long time really cause that damage. Basically it sat for a long period, and he said he went to start it again and he said it just would kick over, but no compression. So I am assuming the grooves in the pistion are from partical that had deteriorated and then wedged in the cylinder wall and scarred it from kicking it over while it was messed up?

Now I now I will need a piston and rings and have the cylinder bored, etc.
What bore should I go with? Any performance things I should do while its apart? bump the compression up at all for any reason?

Should the bottom end be okay? He hardly road it but 1 or two times a year since he got it.

Am I gonna need a wrist pin and bearing and c-clips also?

Thanks!

[hondaATCman]

If you do any performance hop-ups to it, you will most likely have to rejet the carb. If I were you, unless you wanted to go faster and want to rejet, I would stay stock. The wristpin and circlips are included with the piston kit along with the rings. I found a company that will bore, hone, and provide the piston kit and they do a good job. $20 for the bore and hone and around $90 for the piston kit. www.wesleeve.com

[firebird13601]

that's definatly not from sitting, someone was running it when that happend...have it bored and put a new piston in it and it will be like new again

[hondaATCman]

LOL, yeah, I think what that guy meant to say was he rode it every day all year and siezed it up, let it set for a few years and went to kick it to see if it fixed itself.

[250RWANTER]

Hmmm....guy seemed like a really honest guy. Old guy too, had it to run around in the desert until he sold his land. Weird. What would cause that damage? Maybe someone else road it, **edited** it up and when he went and tried it he just thought it was the rings from sitting. Who knows. The bike seems to be in great shape otherwise.

"if you wanna go faster".....dont we all?

Yeah, I probably leave it stock. I was just making sure there wasnt anything that I was leaving out. Sometimes there are things that people say "while its apart you may as well do it"

I'll redo the carb, etc, just cause its been sitting for ever, but everything else looks to be in good shape.

[250RWANTER]

How about exhaust? I notice a majority of the trikes have aftermarke exhaust? Is it worth it? Expensive?

[renotrikeguy]

I personally would just freshen up the cylinder and clean the carb .. Those older trikes are better left stock.

As soon as I get the $$ im going to freshen my 81 250r up.. Then Im switching everything to an 82 frame so I can use the Disc brake on the rear.


Chris

[firebird13601]

It's not worth it, about the only one that still makes a exhaust for that is DG (dont' go) the pipe is $170.00 and the silencer is $80.00....the stock exhaust is pretty decent on those.

[250RWANTER]

sounds good to me. Cheaper that way too

[renotrikeguy]

If I can find it , I will post what my 81 250 looked like when I got it.. But that might be a while..



I think it looks good the way it is now.

[Lots_Of_Nothing]

thats nothing new to 250R's, the piston is most likely the stock one, and he obviously didnt take too good care of it (whoever owned it over the years), most likely he was running to lean and to hard, the piston gets hottest over the exhaust port, and after awhile the piston just cant take it and it just starts melting and breaking up (improper lubrication also causes this), on the liquid cooled 250R's they really address this problem in 2 major ways, one the head gasket has larger holes for the cooling liquid to pass through over the exhaust port for betting cooling in that certain area, also the piston has 2 tiny holes drilled on the exhaust side to allow better cooling.

as for the pipe, i would say its worth it, even if it is a DG, nothing makes a 2 stroke happier then when it sheds it stock exhaust.

[TeCaTe_MaN]

that looks like it was running really lean, is that the exhaust port side? looks like someone got the piston so hot that it melted...

[250RWANTER]

what would cause it to run lean? An adjustment or? I just want to make sure when its back together, it runs right and how its supposed to for many years to come!

Also, on he oversize...how much do I go? 10 over? 30 over? Whats the norm and is there any reason for going bigger than I HAVE to?

Exhaust....looks like its an opinion thing...I'll probably just leave the exhaust alone, at least for now.

What are the better brands of exhaust? "Even if it is a DG" makes it sound like its not one of the better ones.

Thanks for the help!

[TeCaTe_MaN]

well running lean can be because of alot of things...the fuel mix, an air leak, bad crank seals, badly tuned carb, among other things...

and the "norm" on boring is stock bore, people overbore either because they haveto (like you) or because they want more power, some do it just so they can say "my bike's bored out" if you want more power out of it i'd say go for a .30 or .50 over squeeze some extra muscle out but a .10 will freshen it up enough

and almost any pipe is better than the stock pipe....exept tecates they have the best pipe already, stock, if you can get a DG pipe go ahead but if you dont want to shell out 170 bux for a little more power than just keep the stock one...a fresh coat of paint/clearcoat will make a stock pipe look brand new again

oh yea and another thing....i think you got lied to there is no way that could have happened without this bike runnin hard for a long time...he knows what he did, maybe he doesnt, but i know he knows that it didnt happen from "sitting around"

[Lots_Of_Nothing]

it runs lean from improper lubrication (gas/oil mixture too lean, gas/air mixture too lean)(if you actually read my post before you would of allready knew this), do not listen to ****head up there telling you to bore out a air cooled R for more power, IT WILL NOT GIVE IT MORE POWER, all it will do is make it get hotter faster, and it will also lose alot of reliability, just find out how much you have to go, and just do it to that, do NOT go more then you need to.

the DG pipes may not be the best, but they sure are better then a stock R exhaust.
also, your stuck with DG, unless you find a used one on ebay (a different brand) then you wont find anything else, no other companys make them anymore for it.