XC Carb Swap? - HCS Snowmobile Forums

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Old 09-26-2019, 10:30 AM   #1 (permalink)
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Default XC Carb Swap?

I've tried searching and only found a little bit of info on the topic.

Looking at replacing my stock XCR carbs with some twin 40 mm carbs. These have the 2.0 black slides as well. Thinking it's an easy way to upgrade to black slides and get some more carb bore.

Worth it for a mostly trail/lake sled?
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Old 09-28-2019, 08:03 PM   #2 (permalink)
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Why do you have xcr carbs on an xc ?
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Old 09-29-2019, 05:04 PM   #3 (permalink)
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I'm thinking about doing the same thing. My 99 xcr rack still has the greenies in it. I have an 01 700 rack and an 02 700 rack and both have 2.0 slides in them. There isn't much info on how to do it though. Any one ever done it?
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Old 09-30-2019, 09:44 AM   #4 (permalink)
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Quote:
Originally Posted by xcr 600 modi View Post
Why do you have xcr carbs on an xc ?
I don't. I want to put XC 40 mm carbs on an XCR.
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Old 09-30-2019, 09:55 AM   #5 (permalink)
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Quote:
Originally Posted by cadmaker View Post
I'm thinking about doing the same thing. My 99 xcr rack still has the greenies in it. I have an 01 700 rack and an 02 700 rack and both have 2.0 slides in them. There isn't much info on how to do it though. Any one ever done it?
That's pretty much the exact same reason I'm doing it too.
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Old 09-30-2019, 04:03 PM   #6 (permalink)
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Put the 2.0 black slides out of the 40's into your 38's. Same slide is used in both.
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Old 09-30-2019, 10:35 PM   #7 (permalink)
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I could do that but I wanted to try the 40's to see the performance difference. Guess I'll tear them apart and see if I can get the 40's to work.
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Old 10-01-2019, 08:42 AM   #8 (permalink)
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I have bored dozens of XCR 38's into as big as 42 mm, on my own 41.3 is what I run..
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Old 10-02-2019, 10:21 AM   #9 (permalink)
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Quote:
Originally Posted by JGR1517 View Post
I don't. I want to put XC 40 mm carbs on an XCR.
Oh o.k I have 38's bored out to 40 mm on mine..
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Old 10-02-2019, 11:10 AM   #10 (permalink)
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Boring would be a good way to go. We used to Oval bore our trail sleds. We also installed UFOs if they had round slides. saw great improvements.
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