Time Machine Posted April 16, 2016 Report Share Posted April 16, 2016 I was talking to a guy the other day who said the stock XLT carbs can be used on a Banshee. If that's true, there's a ton of those carbs out there and they're cheap. Anyone have experience with this? Quote Link to comment Share on other sites More sharing options...
Time Machine Posted April 16, 2016 Author Report Share Posted April 16, 2016 I just retread that post and I realize I should have stated it differently. Didn't need to use "If that's true . . ." The fact is the guy I was talking to is a major player in the snowmobile and ATV engine world. I'm very confident he knows what he's talking about. I'm just curious to hear from anyone here who may have done it, and to offer it as a possible mod. Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted April 16, 2016 Report Share Posted April 16, 2016 They look like 38mm mikuni round slide carbs. Basically a bigger version of the stock Banshee carb. For how I ride, I'd never put 38mm carbs on a Banshee. Large carbs = lost fuel economy. Large carbs = lazy bottom end power. IMO, 38mm carbs are for long stroked/ported motors or full blown drag ported 350's burning alcohol. I'm not saying these carbs won't work, but it may be a detriment to your bike if the motor doesn't require such large carbs. Maybe at 5,000ft where you ride 38's are the bees knees, who knows, and there's only one way to find out... Look for KX85 motorcycle carbs if you want a good used carb. They are Keihin 28mm PWK's. http://www.ebay.com/sch/i.html?_nkw=Kx85+carbs&isNewKw=1&isRefine=true&mfs=GOCLK&acimp=0&_trksid=p2056088.m2428.l1313.TR0.TRC0.Xkx85+carbs&sqp=kx85+carbs&rt=nc&redirect=mobile Personally when it comes to my motor's breathing I want brand new components.... If your motor isn't stroked and ported stock carbs are perfectly fine up to around 80whp. They can run really well, but their tiny bowls can get sucked dry when doing long wide open blasts with a stroked and ported motor. There are billet driveline bowls that increase capacity, but a motor that's big enough to drain the bowls is probably also going to be choking for air through the stock carb Venturi. I'm building a Serval and will more than likely go with 33mm PWK's. From what I'm told the slightly bigger carbs will make more power everywhere on the curve over stock carbs. When Redline builds my motor this summer, it'll be dynoed with bored stock carbs and 33mm PWK's. If the stockers can out perform the 33mm PWK's, we'll all be pleasantly surprised and I'll buy a set of Driveline Performance's billet oversized bowls for stock carbs... Quote Link to comment Share on other sites More sharing options...
Time Machine Posted April 16, 2016 Author Report Share Posted April 16, 2016 (edited) Personally when it comes to my motor's breathing I want brand new components.... If your motor isn't stroked and ported stock carbs are perfectly fine up to around 80whp. They can run really well, but their tiny bowls can get sucked dry when doing long wide open blasts with a stroked and ported motor. There are billet driveline bowls that increase capacity, but a motor that's big enough to drain the bowls is probably also going to be choking for air through the stock carb Venturi. .. I'm with you on the new components, I feel the same way. I'm normally pretty skeptical about these things. I posted it out of curiosity. Always looking for new knowledge. I saw the comments on carb bowls in your engine post. I made a note to self to talk with Cam about that. Edited April 16, 2016 by Time Machine Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted April 16, 2016 Report Share Posted April 16, 2016 If you have a motor that needs 38s then you have spent a large sum of money. Why at that point would you cheap out and run some round slide junk that aren't going to make as much hp as a correct carb? That's fucking stupid! Side note. Did you're "expert" mention the whole needing a pump thing? Quote Link to comment Share on other sites More sharing options...
r_gillies Posted April 16, 2016 Report Share Posted April 16, 2016 Older 580 xlt had 34mm carbs maybe those are the ones your bud was referring to? Sent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Time Machine Posted April 16, 2016 Author Report Share Posted April 16, 2016 (edited) If you have a motor that needs 38s then you have spent a large sum of money. Why at that point would you cheap out and run some round slide junk that aren't going to make as much hp as a correct carb? That's fucking stupid! Side note. Did you're "expert" mention the whole needing a pump thing? Well, as I said, I tend to be skeptical about these things. I agree its better to spend the money on the right stuff. But I owned a couple of those XLT's when they first came out years ago so I guess that made me curious about it. And as r gilles correctly says, the guy I talked to said 34, not 38. I'm sure I'll be talking to him again in the next few weeks. I'll get the specifics from him and if it's anything that might be helpful to someone here I'll post it. Edited April 16, 2016 by Time Machine Quote Link to comment Share on other sites More sharing options...
Bennett131 Posted April 16, 2016 Report Share Posted April 16, 2016 It won't be helpful, nobody will run that junk. Quote Link to comment Share on other sites More sharing options...
Time Machine Posted April 17, 2016 Author Report Share Posted April 17, 2016 Okay, so I've done some reading on round vs flat slide. Live and learn. Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted April 17, 2016 Report Share Posted April 17, 2016 Sorry about starting shit about 38's. I googled,"polaris xlt snowmobile carbs" and 38's came up. 1 Quote Link to comment Share on other sites More sharing options...
registered user Posted April 17, 2016 Report Share Posted April 17, 2016 those old round slides are cheap as peanuts and probly why he suggested them. yz490 round slides could be used as well and theyre nearly as cheap. then again you could use most any carb from 100 different engines. depends what size you want, the brand and how much you want to spend. 80cc bikes are probly around the 28mm range. 125 and 250 are going to be 34mm-38mm. a lot of people don't know it but 125ktm are using bigger carbs than the 250 engine 1 Quote Link to comment Share on other sites More sharing options...
Time Machine Posted April 18, 2016 Author Report Share Posted April 18, 2016 Sorry about starting shit about 38's. I googled,"polaris xlt snowmobile carbs" and 38's came up. No problem. My mistake anyhow, I should have said 34's to begin with. Besides, I got to do some good reading and learned more that I didn't know before. That's why we're all here, right? 1 Quote Link to comment Share on other sites More sharing options...
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