MX 250 trickery.

[firko]

Here's a neat little bit of kit for anybody building a trick MX250/360/sc500. If it fitted the early engine I'de be bidding on it. Cheap right now but I bet it takes off as bidding closes.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=330298080782&ssPageName=ADME:B:EF:MOTORS:1123

[Marc.com]

slapped a couple of bids in.....getting pricey but what price true love eh..... bit worried about magnesium corrosion, I have a rather unattractive collection of RM clutch covers that look like swiss cheese.

[Marc.com]

just fitting some bushes to the tricky back end now

[mx250]

just fitting some bushes to the tricky back end now

Now that is trick , what swingarm is that?

I thought the 250 and 360/500 clutch covers were slightly different.

[Marc.com]

swingarm is PDI, gives a range of shock positions that covers everything from hill climbs to observed trials. 

[Marc.com]

I think the MX 250 is really under rated, Yamaha build quality, spares on every street corner, its usable and then some. The YZ 250 A for sure is #1, but for the $500 the MX250 cost me I am looking forward to seriously using it.

[mx250]

I think the MX 250 is really under rated, Yamaha build quality, spares on every street corner, its usable and then some. The YZ 250 A for sure is #1, but for the $500 the MX250 cost me I am looking forward to seriously using it.

Its a great underrated motor, the rest I'm not so sure about. I'm sure a little thought and some engineering would have it up with the YZ. That lightweight swinger with a lighter wheel, some quality shocks, some suspenion work at the front and away ya go .

[cyclegod]

Do you have any other trick stuff to add to your MX?
I'm making do with a webco head, pvl ignition and a circle-f pipe 

[Marc.com]

Do you have any other trick stuff to add to your MX?
I'm making do with a webco head, pvl ignition and a circle-f pipe 

well it was supposed to be a budget racer, OK I admit it I have mint yz A tank with straps and YZ C forks.

[mx250]

Is the PDI swinger 'period' ?

[Marc.com]

yep PDI supposedly made it to fit a TM250, the story goes that a US dealer hotted up some TM250s with alloy swingarms and RH motors. I have a later PDI swinger for my 75 KX 250 and it is quite different. For some reason they dropped the adjustable shock position, pity I think they were on to something there. 

[Marc.com]

Youch a bit more than I need to spend right now.

[jimg1au]

grahame you are correct mx250 clutch side covers do not fit mx360 or sc500 as there is no hrmonic balancer on the 250.builge top of c/case behind clutch,
cheers
jim

[LWC82PE]

yes PDI is period 70's brand

[Marc.com]

yeah I also have Trickit fork kit for the front. Bike came with all the dealer stickers from California when it was sold still stuck to it, been lying about half rebuilt in Tokyo for years.