Roman
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| posted on 18/11/08 at 04:33 PM |
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Bike carbs to crossflow inlet manifold pipes
Bend or cut and weld?
Crossflow engine with unspaced CBR600 carbs, pipe is mild steel.
Do I try and bend them or cut and weld them to get the correct angles, etc?
If bend, what is the best way of bending 1 5/8" mild steel pipe without distorting it?
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jacko
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| posted on 18/11/08 at 04:46 PM |
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Weld
Hi have a look in my photo archives
under zx9r carbs & manifold
Jacko
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Roman
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| posted on 18/11/08 at 04:51 PM |
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quote:
Originally posted by jacko
Weld
Hi have a look in my photo archives
under zx9r carbs & manifold
Jacko
Been looking at your photos for sometime now, they have been giving me ideas leading up to me finally making the decision to go down the bike carb
route. Thanks 
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jacko
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| posted on 18/11/08 at 04:59 PM |
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Go for it it's not hard if you can weld
Im glad you like my manifold
Graham
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mcerd1
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| posted on 18/11/08 at 05:06 PM |
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my alloy manifold (bogg brothers) is cut and welded:
http://s5.photobucket.com/albums/y170/mcerd1/Dax/IMG_3947.jpg
http://s5.photobucket.com/albums/y170/mcerd1/Dax/IMG_3948.jpg
jacko - what are the things with the wires on the bottom of your carbs ? and why don't mine have them ??
(mine are also CVR's from a ZX9R)
[Edited on 18/11/08 by mcerd1]
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Memphis Twin
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| posted on 18/11/08 at 05:42 PM |
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quote:
Originally posted by jacko
Weld
Hi have a look in my photo archives
under zx9r carbs & manifold
Jacko
I like it better with the SUs
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will121
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| posted on 18/11/08 at 08:21 PM |
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Ive respaced my carbs so only had to bend in one plane, but just cut the tube to form a V nearly all the way through then bent it and welded the joint
as seemed easier than clamping loose sections together and welding.
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MikeRJ
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| posted on 18/11/08 at 11:02 PM |
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quote:
Originally posted by will121
Ive respaced my carbs
By far the best idea. Some of the manifolds I've seen for unspaced carbs have had very sharp bends in the outer runners, not ideal for a
performance upgrade.
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David Jenkins
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| posted on 19/11/08 at 08:53 AM |
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I've also respaced my CBR600 carbs - if you click on the WWW link below, and click on the 'bike carbs' menu item, then you'll
see what was involved. There's no reason why the inlet manifold couldn't be made of steel, instead of the ali I used.
[Edited on 19/11/08 by David Jenkins]
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Roman
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| posted on 19/11/08 at 09:14 AM |
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quote:
Originally posted by David Jenkins
I've also respaced my CBR600 carbs - if you click on the WWW link below, and click on the 'bike carbs' menu item, then you'll
see what was involved. There's no reason why the inlet manifold couldn't be made of steel, instead of the ali I used.
[Edited on 19/11/08 by David Jenkins]
Book marked your website along time ago David very useful, 1 of the reasons I went for the same carbs. 
I don't have the tools/skills/money required to respace the carbs, so trying to do it without.
Thanks for all your comments I think I will try the cut and shut method.
I will keep you posted.
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jacko
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| posted on 19/11/08 at 05:42 PM |
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quote:
Originally posted by mcerd1
my alloy manifold (bogg brothers) is cut and welded:
http://s5.photobucket.com/albums/y170/mcerd1/Dax/IMG_3947.jpg
http://s5.photobucket.com/albums/y170/mcerd1/Dax/IMG_3948.jpg
jacko - what are the things with the wires on the bottom of your carbs ? and why don't mine have them ??
(mine are also CVR's from a ZX9R)
[Edited on 18/11/08 by mcerd1]
Hi the thing's with wires are cut off solenoids for when you drop the bike
my carbs are of a continental bike
Just one thing if you re space the carbs to fit a pinto and still have a dizzy the carbs may not fit
Jacko
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