hi all new here, where can i get a piston kit for my crm250

[john7780]

ive just upgraded from my mtx 200 to a crm 250 mk2 and im in desparate need of a piston kit for my new beast any ideas?

[back off road]

there will no doubt be other places but these guys seem to have alot of crm stuff

http://www.leisuretrail.co.uk/Home.htm

welcome to the forum

[eddie666]

some on e-bay

http://cgi.ebay.co.uk/Wossner-Piston-Ho ... 588688e08b

[back off road]

NICE ONE EDDIE ALOT CHEAPER THAN LEISURE TRAIL

[eddie666]

if you are getting it reboard ( which you can on a mk2 , its not sleved / nical plated )
find out what yours size is, work out your over size say 0.50 ect , order your piston kit and small ends and gasket head kit , then find a company that will reboure it for you, if you ask the piston seller what clearance the piston needs for the reboure THEY WILL TELL YOU THE SIZE NEEDED, then tell the reboure man the clearances needed, also make sure they also reboure/ homeing the power valve part thats in the barrel , others on this site know more about this than me,ask them,

this is some of the info i have found out because i need to do my engine reboure soon,
so before you buy any piston kits , find out every thing and parts and people you need to get the job done right,
eg:find some one to reboure it, piston clearences for the reboure man, find out about homing the power valve in barrel/ reboure, take it to him and ask him what oversize he would recomend given the condition of the barrel,
piston sizes you will need or can get,
head gasket / ect
smallends , conrod , conrod pins/clips

tips on doing it,
IF ITS A STANDARD BOURE DO NOT BOTHER REPLASING IT WITH THE SAME BUT NEW , GET IT REBOURED,

FIND OUT AS MUCH AS YOU CAN BEFORE YOU DO ANY THING FIRST,

[eddie666]

there is a few tips on this link

http://www.offwidth.co.uk/bike/crm_rebuild/

[knackeredMk1]

'FAQ -Check here first' is a good place to start with this kind of question.

viewtopic.php?f=20&t=5267

[john7780]

cheers gents ive looked into it and as one of you stated the trx 250 piston will fit and also the cr 250 piston apparently fits too my bore is the standard 66mm, does anyone know or have a diagram of where the oil pipes go? and water pipes? i bought this bike to fix up and im nearly done cant wait to finish it and have my arms pulled out of their sockets, my wifes taking out life insurance ha ha

[knackeredMk1]

There are a mulititude of CR250 pistons. Personally I have not used any, apparently some have but I am not sure .

TRX 87-89 is fine except different gudgeon pin and bearing.

CRMs won't pull arms out of their sockets unless you hit a tree.

[woolley]

what part ov manchester

[john7780]

im in stockport wooley i notice youre in the cheshire area know any good off road tracks? ive ordered the cr250 piston kit ill let you all know how it goes by the end of the week knackered

[back off road]

im only over the tops in derbyshire if y fancy meeting up sometime

[woolley]

gee cross lad born and bred

wool

[john7780]

im in woodley in stockport so im just down hyde road around the corner from you wooley!
back off road we went through derbyshire on saturday when i went collecting my crm and there looks like a few good off road tracks on them thar hills, me and my mate are getting a van so we can load the bikes up as mines not got the lights on yet so not road legal, have you had a go at going over the tops?

[back off road]

not on the crm but i used to do alot of greenlaning with my landrover up there