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Big End Specs needed for ’83 air-cooled 250

Posted: 01:50 am Apr 08 2010
by TheDktor
With ref to my “new” bike:

http://kdxrider.net/forums/viewtopic.ph ... highlight=

Can anyone help with some specs for the big-end? There is no up and down play but side to side is quite loose but I have no idea what is normal.

Cheers for any help!

- Steve

Posted: 06:01 am Apr 08 2010
by Julien D
up and down play is what you're worried about there. Side to side is normal.

Posted: 01:33 am Apr 09 2010
by TheDktor
>|<>QBB<
juliend wrote:up and down play is what you're worried about there. Side to side is normal.
Yes I appreciate that, but normally there is a spec to measure how much the thrust washers and related contact areas are worn. Gives a good idea of how much use the big end has had....

Steve

Posted: 06:03 am Apr 09 2010
by Julien D
Yeah, I don't know the specs for your bike, sorry. Service manual is necessary for these numbers. I would say if there is no up/down play in the rod it is ok to use.

Posted: 09:33 am Apr 09 2010
by fuzzy
2nd