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I Seen A Ufo Today


Oilsmoke

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Kinda exspencive isn't it. But I think it would work. The problem that the round slides have, is that they have lots of turbulance on both sides of the slide where it mates with the carb body. It doesn't improve with flow. :( So people go to flat slides. :D

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The UFO

was a great mod for snowmobilers It should work great in my 34mm roundslides.

The bog which i have in part throttle, From what I have read is cause by the airflow coming under the cutway on the slide and hitting the front lip of the round slide than pushing the flow down into the unrestirted airflow on the lower half which really messes it up. My freind told me it was one of the mod you could really feel On his sled.

I plan on a set someday in january to test out.

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Wouldn't hurt to try it, my friend isn't the best mechanic and it made the sled rev at an idle...He couldn't get it to stop revving out so he just pulled them back out...it might have been something he did, I don't know....

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The carbs stick slighlty open and when trying to get through water. I did several test and believe of vacuum is being created either by water getting in through the choke circuit or the outside of the carb body shrinking because of temp change. I believe it's vacuum because the slides drop the instant you turn the motor off. You can watch them when the air filter is off. I bought new carbs and can play in the water just fine now.

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Oilsmoke Have you put more compresson into your motor. Why I ask is, when you put 34mm carbs on a stock compresson engine, it has a hard time sucking gas up the needle jet at low rpms because the vacume is to low. You aren't having any trouble once things start getting wound up? More compresson would cause more vacume and throttle response. I have the same mods as you except aftermarket head and 20cc domes. The carbs are stock tapper bored to 27.5 and my throttle responce is great. I mean idleing along in second and punch the throttle and instant pull, right away. Think about going back down to 28 or 30 carbs.

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I think when you get the new head on it will take away the bog. Well the 34s would go good on the 370 stroker. Befor I spent $60 I would take some JB weld and fill that up and cut the little slots out with my die grinder. See if some slides are on ebay and try it.

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