tunnel ram - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 4 (permalink) Old 03-21-2012, 08:50 PM Thread Starter
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tunnel ram

Do they make what we used to call tunnel rams (extensions for the carbs) so the carbs will sit off to the side?

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post #2 of 4 (permalink) Old 03-21-2012, 09:01 PM
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And by "they" you mean?
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Have not ever heard or seen any for this bike, but what, you're talking about installing "unconnected" carbs? You know there's only one cable opening both carbs right? How would this work with the stock carbs?

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post #3 of 4 (permalink) Old 03-23-2012, 05:19 PM
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"Tunnel Rams" for cars were for air intake. Was always attached to a hood scoop. A venturi effect would then "ram" the extra air into the carb intake.
Harley aftermarkets make similar for theirs, and since some Harleys use same carb as us, it could probably be modded to work (45 deg elbow off intake)...but remember...the air is then unfiltered except for a coarse screen. Those things are for tracks and weekends in LA at best. Ringjob and hone after 5000miles if that.....



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post #4 of 4 (permalink) Old 03-24-2012, 01:04 AM
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I had a Weiand tunnel ram on my '85 Camaro drag racer, with dual Edelbrock quads on it, topped off by a Hilborn style scoop. It did have filters, something similar to the K&N ones. They didn't filter very well, but were only used 1/4 mile at the time. I had an additional foam filter that fit over the end of the scoop, which I only removed when I pulled up to the staging line. It went back on for the dive over gravel from the end of the track back to the pits.

Non filtered air, or poorly filtered air, ala K&N, usually erodes the valves and valve seats first before much wear starts showing up on the cylinder walls. Meanwhile, while that is going on, it has found it's way into the crankcase oil, and has already started wearing on the bearings and cams.

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