Vintage Dirt Bike Q & A

hi
i have to freshen up the top end of my bike and honda in australia say i cant buy the pin bearing or clips what do you guys use as i want to get this done.
i have gen .25 piston and rings
cheers
jim

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Jim Garvey
1x honda cr250m 1973 in bits
1x honda cr250 champion dirttracker
1x yamaha tt500 dirttracker 1976
1x yetman triumph dirttracker
1x tt500 longtack speedway bike
1 x 1940 350 ariel speedway bike
1 x bultaco astro grasstrack bike antig

Jim,

I bought the following parts last November, from my local Honda dealer here in the USA:

piston pin 13111-357-000
circlips 94601-18000
small-end bearing 91015-357-003

I checked bikebandit.com just now, and they all are still available.

The bearing and clips will definitely work. I couldn't find a P/N for the '73-'74 CR250 pin, so I couldn't check that one.

Ray

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'74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric

thanks
went to bikebandit did all the stuff for account
then the real bandit came out 80.00 us to send what sould cost no more than 15.00
i just got a manifold sent from az cost 14.00 us so were do they get 80.00 for shipping of a piston pin bearing and 2 circlips
thanks

_________________
Jim Garvey
1x honda cr250m 1973 in bits
1x honda cr250 champion dirttracker
1x yamaha tt500 dirttracker 1976
1x yetman triumph dirttracker
1x tt500 longtack speedway bike
1 x 1940 350 ariel speedway bike
1 x bultaco astro grasstrack bike antig

I went the route of the longer rod from http://www.badbrush.com I had my crank taken apart and put back together and trued. The guy has been doing this for years and is about 70 so knows what he was doing. The only problem he had was the piston pin that I got with the stuff from badbrush was the wrong size but he had one that worked put it all together and welded it. It also comes with a spacer to make up for the difference in rod length which is very small maybe 1 to 3 mm not much. It works great in my engine but I had some port work done with the new rod lenght taken into account so it may affect your engine differently.

I am running a wiseco pin bearing with no trouble. I also suspect that the Wiseco clips are probably the same as oem too. They both work for the same pin diameter, so the checking point would be the wire diameter. Both of these items are current in-line Wiseco products available from any dealer, well in the USA anyway.

thanks for all the info looked at the wiseco site and the mx250a yamaha uses the same little end so i have a new one of those at home
thanks
jim
ps
got nos pin and clips

_________________
Jim Garvey
1x honda cr250m 1973 in bits
1x honda cr250 champion dirttracker
1x yamaha tt500 dirttracker 1976
1x yetman triumph dirttracker
1x tt500 longtack speedway bike
1 x 1940 350 ariel speedway bike
1 x bultaco astro grasstrack bike antig