ssc28
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| posted on 31/8/11 at 04:42 PM |
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Best Choice of Bike Carbs
I've read many of the topics on the pros and cons of bike carbs over my existing 45 side draft dellortos and have now decided to go down the
bike carb, not tb route. Which carbs are best suited to car use. I understand some can be re spaced without much trouble and I hope someone can tell
me which ones.
I want to keep this as simple as possible as I intend to do the inlet manifold and basic jetting myself in true locoster fashion. Any advice would be
greatfully received.
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jacko
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| posted on 31/8/11 at 04:53 PM |
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I have zx9r carbs
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coozer
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| posted on 31/8/11 at 05:05 PM |
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What size engine are you using??
1972 V8 Jago
1980 Z750
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mookaloid
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| posted on 31/8/11 at 05:44 PM |
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Sounds like a lot of effort for not much gain to me - what's wrong with the 45s ?
"That thing you're thinking - it wont be that."
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snapper
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| posted on 31/8/11 at 05:55 PM |
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Bike carbs V's weber debate....... Here we go.....
An experienced tuner who worked for Tolman racing and worked on a Caterham racer series says bike carbs are better as the veritable venturi delivers
better flow characteristics, much better response at part throttle as the throttle butterfly may be slammed open by the large right foot but the
veritable Venturi with the needle is raised only by the amount the engine requires.
Economy is better as well.
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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macc man
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| posted on 31/8/11 at 06:04 PM |
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Can depend a lot on which engine you are using. For a zetec they are ideal and a cheaper option especially if you can make your own manifold. I made
my own so I did not need to respace carbs but off the shelf items are available. Contact fast dan on here he may be able to advise you and supply what
you need.
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cliftyhanger
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| posted on 31/8/11 at 10:10 PM |
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All good advice. BUT you need to be careful with jetting. Get it wrong=dead engine. A wideband O2 sensor is needed (or a rolling road)
[Edited on 31/8/11 by cliftyhanger]
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jazzym
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| posted on 1/9/11 at 07:26 AM |
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I have ZX9R carbs and they are much better than the twin Weber 40's I had on before. Better fuelling, better throttle response, better economy
etc....
I made sure that I had a mounting point for a lambda sensor welded into my exhaust to ensure the fuelling was bang on when being set up on a rolling
road. I simply screw a spark plug into it in order to plug the hole when not in use.
My pinto now makes a very useful 174bhp at the flywheel and that's with just a piper 270 cam. There would be a bit more if I went to a 285.
Jason
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