Mikuni VM38SS?

RobKacp
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RobKacp
Edited Date/Time 4/11/2016 6:53am
I am just finishing up a year long restoration of an 87 KX250. The carb needs to be rebuilt now - leaks like a sieve.

Its a VM38SS, and I cannot seem to find any rebuild kits or even parts for the carb. Do any of the later model VM carb kits work at all? I'd hate to lose the OEM carb, but if I have to - has anyone used a Keihin D slide as a replacement? Will it fit in the stock boots?

Thanks!
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bad juju
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bad juju 4/10/2016 12:26pm
4/10/2016 12:26pm
Mikuni power.com they got rebuild parts.
fookyoo
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fookyoo 4/11/2016 5:02am
4/11/2016 5:02am
The problem with parts

They usually cost more than a new carb, pre jetted for your bike

I buy new
Bricktop72
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Bricktop72 4/11/2016 5:48am
4/11/2016 5:48am
My 1997 Yamaha wr250 came with a Mikuni vm38ss. Its a pretty horrible carb. I tried jetting out a 1/8th throttle sputter for two years and finally gave up. The best money spent is a Keihin pwk38as. It completely wakes up the bike, and jetting is so much easier.
RobKacp
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RobKacp 4/11/2016 6:16am
4/11/2016 6:16am
Bricktop72 wrote:
My 1997 Yamaha wr250 came with a Mikuni vm38ss. Its a pretty horrible carb. I tried jetting out a 1/8th throttle sputter for two years and...
My 1997 Yamaha wr250 came with a Mikuni vm38ss. Its a pretty horrible carb. I tried jetting out a 1/8th throttle sputter for two years and finally gave up. The best money spent is a Keihin pwk38as. It completely wakes up the bike, and jetting is so much easier.
No doubt its a POS carb. Kawi went to the Keihin in 88.

Rub for me is keeping the bike as original as possible, but parts do not seem to exist for that particular carb anymore. Even from mikunipower or pjmotorsports.



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fookyoo
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fookyoo 4/11/2016 6:53am
4/11/2016 6:53am
Buy a new carb set up for your bike
and strip the parts you need off
cheap and easy

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