Vintage Dirt Bike Q & A

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 Post subject: 1977/75 DT 400 swap
PostPosted: Tue Apr 15, 2008 8:30 am 
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Joined: Tue Apr 15, 2008 8:24 am
Posts: 1
Hello,

Ive got a 1975 DT 400 with a bad top and bad crank. Ive found a good running 1977 DT 400, will the 77' fit into the 75' frame? I dont want to do any serious conversions just looking to swap it out. Thanks in advance for any info.

--Roost--


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 Post subject: Re: 1977/75 DT 400 swap
PostPosted: Wed Apr 23, 2008 3:42 am 
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Joined: Tue Aug 31, 2004 1:44 am
Posts: 283
Location: Maysville, AR
i have never tried it myself.you might have to remove the engine in the 75 and compare it to the 77 engine,mounts wise and all that,note how the exhaust port is,stuff like that.you might try asking this questions at http://65.12.209.183/yamahaforum/index.php you will have to join there to post but there is many experts on the DT's there.there is a guy named Endurunut there.he is quite the guru.he might know.there is some guys there that know about the 77/78 DT400 and there are many members there with the 75/76 models there too.i own a 75 model myself.

_________________
(2) 1968 DT1 1970 RT1M,1970 DT1C 1971 RT1B Enduro 1974 MT250 1974 DT250A (2) 1975 DT400B 1974 DT100,1978 DT175
1975 CR250M1 1979 CR250R 1979 Kawasaki KZ400H1 Jesus is Lord!!


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 Post subject: Re: 1977/75 DT 400 swap
PostPosted: Sun Sep 20, 2009 12:38 am 
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Joined: Sat Sep 19, 2009 11:55 pm
Posts: 4
I just bought a 1978 DT250 project. Do you have any parts left over from the '77? I think they are the same!


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