Vintage Dirt Bike Q & A

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 Post subject: 1979 YZ400 Piston wanted
PostPosted: Thu Nov 01, 2007 1:47 pm 
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Joined: Fri Jul 29, 2005 2:21 pm
Posts: 123
Location: Gloucester, England
Guys

Has anyone got a 0.75 3rd o/s piston for a YZ400F.
Must be the F model.

many thanks


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PostPosted: Mon Nov 12, 2007 5:35 am 
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Joined: Thu Oct 14, 2004 7:25 am
Posts: 68
Location: Sydney, Australia
hi jim here in australia
i was put onto a racer in victoria southrn australia who runs yz465 pistins in his 1979 yz400f.he miked both pistons and found that if he used a 4mm spacer plate under the barrel the 465 works perfect.run this past the guys at antig they might be able to verify if this is ok for you.
cheers
jim garvey

_________________
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


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