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ATV Riders Forum > Sport ATV Model Information > Yamaha Raptor 700R ATV Info > Need An Exhaust...

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lilyamaharacer4
Senior Member

Registered: Oct 2006
Location: Northern Cambria
Posts: 370

Why would you get dauls, daul cans kill power not add it, sure they look cool but thats it. Bends kill power, not to mention also adds weight.

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09-24-2008 02:17 AM

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xrdrsux
Senior Member

Registered: Oct 2007
Location:
Posts: 233

a single pipe cannot handle the output of a higher cam needs. No way no how. The weight isnt gonna be a factor. This has been discussed many many many time on www.raptorforum.com www.moddedraptor.com www.raptorsource.com and others im sure. If he plans on staying stock then a single such as CT or sparks or woods or even a yoshi or something is fine. If he is gonna mod it up he needs duals.

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kazuma 80

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09-24-2008 02:34 AM

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yfzrider310
Senior Member

Registered: Jul 2007
Location: Southern MN
Posts: 795

yoshi isnt that expensive Mine was 250 brand new for an rs2 slip on. Which isn't bad and it sounds amazing.

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09-24-2008 03:55 AM

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lilyamaharacer4
Senior Member

Registered: Oct 2006
Location: Northern Cambria
Posts: 370

quote:
Originally posted by xrdrsux
a single pipe cannot handle the output of a higher cam needs. No way no how. The weight isnt gonna be a factor. This has been discussed many many many time on www.raptorforum.com www.moddedraptor.com www.raptorsource.com and others im sure. If he plans on staying stock then a single such as CT or sparks or woods or even a yoshi or something is fine. If he is gonna mod it up he needs duals.

Please tell me how this works. I know for a fact on the bikes it works backwards for example its a proven fact that single cans make more horsepower than the dauls even on the crf 250, the only reason why the factory teams had to run dauls was because of their contract, this year they are switching back to single cans. High reving race motors need to breath the best they possibly can so why would they be switching back? Now please to me how the raptors motor would make more horsepower with dauls.

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09-24-2008 04:04 AM

xrdrsux
Senior Member

Registered: Oct 2007
Location:
Posts: 233

quote:
Originally posted by yfzrider310
yoshi isnt that expensive Mine was 250 brand new for an rs2 slip on. Which isn't bad and it sounds amazing.

yea but you can just pull the spark arrestor/guts out of the stock exhaust and get almost the same gains for $0. What is the full system yoshi rs7 or equivalent going for on the raptor.. 590. 690 ish.

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kazuma 80

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09-24-2008 04:12 AM

xrdrsux
Senior Member

Registered: Oct 2007
Location:
Posts: 233

quote:
Originally posted by lilyamaharacer4
Please tell me how this works. I know for a fact on the bikes it works backwards for example its a proven fact that single cans make more horsepower than the dauls even on the crf 250, the only reason why the factory teams had to run dauls was because of their contract, this year they are switching back to single cans. High reving race motors need to breath the best they possibly can so why would they be switching back? Now please to me how the raptors motor would make more horsepower with dauls.

I dont have the resources or smarts to speak on the dirtbikes. As far as the high revving race motor: the 700 is not a high revving race motor. It has a bigger displacement as you already know. All rules dont apply in this scenario. Ill get you some more specific info from builders here in a few minutes and copy and paste it on here. be right back.

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kazuma 80

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09-24-2008 04:17 AM

yfzrider310
Senior Member

Registered: Jul 2007
Location: Southern MN
Posts: 795

quote:
Originally posted by xrdrsux
yea but you can just pull the spark arrestor/guts out of the stock exhaust and get almost the same gains for $0. What is the full system yoshi rs7 or equivalent going for on the raptor.. 590. 690 ish.

449 for the full system

__________________
-2006 yfz 450 Elka/Wicked/GTT/Kenda/Yoshimura
-03 blaster- In the last 4 years of owning it has ran good for about a week.

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09-24-2008 04:20 AM

xrdrsux
Senior Member

Registered: Oct 2007
Location:
Posts: 233

heres some on ebay
http://cgi.ebay.com/ebaymotors/Yosh...tcZph
oto
http://cgi.ebay.com/ebaymotors/Yosh...tcZph
oto

For this price though i would rather have duals. They make some jam up new single that are just out this year that can hang right there with some duals on a modded raptor but id be scared to guess how much they are.

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kazuma 80

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09-24-2008 04:29 AM

xrdrsux
Senior Member

Registered: Oct 2007
Location:
Posts: 233

http://www.atvrideronline.com/featu... /> /index.html

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kazuma 80

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09-24-2008 04:39 AM

xrdrsux
Senior Member

Registered: Oct 2007
Location:
Posts: 233

here is the dual exhaust shootout. There are 3 pages so read each one of them.

http://www.bluetraxx.com/misc/rapto..._deathmatch.htm

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kazuma 80

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09-24-2008 05:41 AM

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