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33mm Carbs Or 30mm For Glamis Duners?


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Well The time is coming to look for new carbs. (hopefully anyways)

 

I was going to go with the 33mm flatslides, but I'm not sure how much bottem end I would lose.

 

Im wondering what other Glamis/Gordons duners run? Will 33's set me up mostly for drag? I like to shoot the hills, but mostly dune, Dragging is fun too but I do these 2 things more often. So Im wondering what would be a better decision for me and my riding style.

 

What else wil I need to purchase to run larger carbs?

 

I have PassionRE's 12 port but I'm having trouble making the decision between 30's and 33's.

 

I probably have some time to decide (untill summer), but in the mean time I'm keeping my eyes out for deals that will be hard to pass up.

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I'm running 35's with just porting. I run 21cc domes so it is kind of sluggish in the bottom end. I will eventually switch over to 18cc domes and run AV gas. I would say 33's just for the top end. If you plan on running race gas try 35's just more power. I wouldn't waste my time with the 30's unless you want killer bottom end. Just my .02

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Well I find myself varying the throttle, speeding up and slowing down on transitions from dune to dune. Im hardly ever going slow though, but I do need the power to be there when I hit the throttle. I also love racing up the hills as I love feeling the top end speed. I really do not want to compromise top end since thats the most fun part of being out there. However, I can't be on the pipe the entire time while duning, and should I need to let up because there is something in my way or im making a transition I need the power to be there when I get back on it.

 

I shift alot of course, but sometimes I find it hard to get back on the pipe after im already heading up a hill. I know 35 are a bit bigger than what Im looking for for sure. Im getting some 19 cc domes and running a 50/50 mix right now, I know the domes will help with the bottem end some but will they be enough to allow me to shift into a higer gear after im already heading up a hill? Mostly I find my transition from 3rd to 4th gear a hard one to hit when not hauling ass.

 

Im not exactly sure that what I need is bottem end though, I just need enough power down low so that I can accelerate quickly back onto the pipes top end.

 

For instance if someone slows down for a witches eye in front of me I hate having to shift all the way down to second or sometimes first gear to continue making it up the hill. I'd like to be able to back off the throttle some in 3rd then nail it and get back on the pipe.

 

Also I do not want to need to be in 4th at the base of the hill when i race up test or olds, We start the races too close to the bottem of the hill, and besides the whoops are hard to deal with when nailing them at the top of 4th gear, I would like to be able to get on the pipe in 3rd and eventualy shift up to 4th 1/2 way up the hill.

 

Hope this better explains what im looking for.

 

I dunno where to get 30's at this time either.

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Sound alot like my Dune shee. I think we need one of jims 4mm Long rods :)

 

I did my sons shee with 28mm mikuni flats and hes bike faster than mine now.

But he is running CPI's and I just finshed a mild port with good polish on the exhaust.

I still feel than 32mm's mikunis should help lower rpms and not hurt are top end pull.

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Justin, what your looking for is a stroker..LOL.. But hey, if you decide to upgrade to a stroker let me know and if we can come up with some stock jugs maybe trade out or something?...Im flexible... Keeping that killer top-end on a 350 and having good grunt is a hard task. If your into the hills alot, keep the carbs at 30 or under. Rememeber, your bike pulls like crazy with the stock carbs and even a set of 28's will increase your top-end. Dont slap a set of 33's or 35's on there and expect to get any more low-end, it wont happen. At best the 33's will accelerate faster and have more top-end, but off the bottom down low, you wont be pleased...Jim

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Justin, what your looking for is a stroker..LOL.. But hey, if you decide to upgrade to a stroker let me know and if we can come up with some stock jugs maybe trade out or something?...Im flexible...  Keeping that killer top-end on a 350 and having good grunt is a hard task. If your into the hills alot, keep the carbs at 30 or under. Rememeber, your bike pulls like crazy with the stock carbs and even a set of 28's will increase your top-end. Dont slap a set of 33's or 35's on there and expect to get any more low-end, it wont happen. At best the 33's will accelerate faster and have more top-end, but off the bottom down low, you wont be pleased...Jim

damn maybe thats the problem, well what all is needed for a stroker besides a $400 crank? I know I would not be able to afford one for quite some time. So I could not use my current cylinders with their porting for a stroker? Guess its a little late now lol...

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where are you going to get 30's at?

Why Good ol' Boonman of course. I have a set of 30mm Mikuni's as a matter of fact. I have been loking to sell them for quite some time. I am going to building my motor soon, and I am not sure if I will need these or not. I doubt it. I need all the power I can get. I don't care about riding around... Anyways, here is some 30's as well. http://www.bansheehq.com/forums/index.php?showtopic=18845

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I just got a set of Vito's 30mm carbs with the dial-a-jet last week and they fit the stock manifolds with no problem. I didn't get out for much of a drive yet because we got a foot of snow right after, but the little that I did get to try them, I noticed a big difference in throttle response.

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I just got a set of Vito's 30mm carbs with the dial-a-jet last week and they fit the stock manifolds with no problem. I didn't get out for much of a drive yet because we got a foot of snow right after, but the little that I did get to try them, I noticed a big difference in throttle response.

a big difference compaired to what? Whats your engine setup?

 

thanks,

JI

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