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What's the best aftermarket carbs?

This is a discussion on What's the best aftermarket carbs? within the Yamaha YFM660R Raptor (2001-2005) forums, part of the Performance /Technical category; I'm in need of some carbs because my stock ones have one of the air screws stripped so instead of buying stock again I'm going ...


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Old 01-01-2005, 09:46 PM   #1
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Default What's the best aftermarket carbs?

I'm in need of some carbs because my stock ones have one of the air screws stripped so instead of buying stock again I'm going to look for aftermarket. What does everyone think is the best carb setup for what I got now. i will be putting in a stage 2 hotcam next month and a 686 kit in the future. I hear a lot about fcr's but where do you get them? I was thinking around 35mm for my setup but any help is appreciated.
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Old 01-02-2005, 05:23 AM   #2
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i know craycraft has them but they are pricey
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Old 01-02-2005, 11:44 AM   #3
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edelbrock single carb conversion is supposed to be pretty good... also not cheap...
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Old 01-02-2005, 01:34 PM   #4
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Edelbrock = roughly 600-700 bucks
FCRs = roughly 1200
Fuel Injection = 1600 :)
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Old 01-02-2005, 04:40 PM   #5
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35mm fcr's would fit your set up perfect. They are around $800-900 new. 39mm's are around 900-1000 new. They might be cheaper if you shop around. I know Craycraft will get you a good price ready to install.
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Old 01-02-2005, 04:51 PM   #6
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I think powroll has an fcr kit for that kinda setup. They could advise you on jetting too! Powroll is a pretty good company to deal with. They've had good 4 stroke products for a longtime.
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Old 01-02-2005, 05:08 PM   #7
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I'd go with the edelbrock just to get back to a single carb, and it's nearly half of the cost (makes it a no-brainer for me) .. our site sponsers have excellent prices on them too.

http://gallery.bcentral.com/GID49908...ur-Raptor.aspx
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Old 01-03-2005, 09:28 AM   #8
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i like the edelbrocks
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Old 01-03-2005, 10:16 AM   #9
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we have ran both and have dyno both. we have had customers that had the single then went to duals again and the end result is the same 35mm FCRs.for those of you that say the edlebrock is better have you honestly tried the 35s?
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Old 01-03-2005, 12:55 PM   #10
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can you post any of the dyno runs to back that up.. I would love to see 'em
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Old 01-03-2005, 07:43 PM   #11
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The edelbrock is a very nice setup and gives a lot of low and midrange but has some feeding problems at top end on a ported head with a mildly aggresive cam.

Boring one is not a viable option due to the tapered bore from the factory, makes it hard to maintain the oem charachteristics and so most with 65+ hp builds around here go with bored stockers or FCR 35's.
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Old 01-04-2005, 07:16 PM   #12
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Quote: Originally Posted by Maddog56
most with 65+ hp builds around here go with bored stockers or FCR 35's.
Who bores out the stockers?
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Old 01-04-2005, 07:42 PM   #13
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I know Craycraft does, and I believe Sparks and some other companies may have as well.
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Old 01-08-2005, 12:53 AM   #14
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Default carbs

sorry i have been busy getting ready for 4SW i will post dyno runs when i get a chance
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