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XS 400 swapping carbs

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pepperami
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PostPosted: 13:01 - 06 Aug 2015    Post subject: XS 400 swapping carbs Reply with quote
Just putting my toe in the water here.

My XS 400 has crappy diaphragm carbs and a crappy vacuum petrol tap.
To get both carbs balanced and the vacuum tap all working together can be a real pain in the harris Evil or Very Mad
I have done it , but? it doesn`t take much for them to be out of kilter.
I have replaced the diaphragms and seals, but it seems so complicated for such a pony bike.


Sooooo, I am thinking along the lines of putting and ordinary tap on the tank and a set of slide carbs in place of those crappy diaphragm carbs.

What I want from the mighty BCF is, have anyone on here done anything like this and what carbs did they use?
Any input appreciated Thumbs Up
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Taught2BCauti...
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PostPosted: 10:57 - 07 Aug 2015    Post subject: Reply with quote
Have a search through the posts on www.xs400.com as it seems like a popular subject.
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pepperami
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PostPosted: 18:17 - 09 Aug 2015    Post subject: Reply with quote
Taught2BCautious wrote:
Have a search through the posts on www.xs400.com as it seems like a popular subject.


Quality Thumbs Up .... have some Karma ..... thank you.
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.Chris.
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PostPosted: 16:54 - 10 Aug 2015    Post subject: Reply with quote
Interesting... so you balance the carbs with the fuel tap disconnected, and when you reconnect it they go out of balance? Surely that points towards a leaky fuel tap or vacuum hose?

I have an XS400 in a million pieces in the garage (in the 'project queue') which despite being in pretty good nick, was taken off the road by the previous owner due to carb problems. He said the engine would start speeding up whilst you were riding it Shocked. I'll have a look on the site suggested for clues!
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pepperami
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PostPosted: 12:57 - 21 Aug 2015    Post subject: Reply with quote
.Chris. wrote:
Interesting... so you balance the carbs with the fuel tap disconnected, and when you reconnect it they go out of balance? Surely that points towards a leaky fuel tap or vacuum hose?

I have an XS400 in a million pieces in the garage (in the 'project queue') which despite being in pretty good nick, was taken off the road by the previous owner due to carb problems. He said the engine would start speeding up whilst you were riding it Shocked. I'll have a look on the site suggested for clues!


No! I put everything together, all with new seals and how they should be according to the manual....... then I tweak?.
It`s just my opinion, but I think vacuum taps and cv carbs are not a good combination.

Previous experience on my old Suzuki GT 250 taught me that slide carbs and an ordinary tap was a lot easier to set up and stay working.

Thank you for your input and anything you can suggest or find will be appreciated Thumbs Up
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