RAVE valve economy/power?

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turbolq4

Free Member

Sep 10, 2009

198

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meridian ID

• Jan 17, 2011

• #1

I have a 2000 700 summit and was wondering if anybody messes with the adjustment on the raves to tailor the sled to the type of riding or the distance you want to go? What kind of mileage difference will they realize, if any?

 

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turbolq4

Free Member

Sep 10, 2009

198

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42

meridian ID

• Jan 19, 2011

• #2

so nobody ever adjusts these??

 

Snow Duck

The Great and Mighty SnowDuck

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Lifetime Membership

Aug 27, 2009

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Kuna Idaho to Elk City Idaho..

• Jan 20, 2011

• #3

Mine are set flush with the cap....i have had them in and out but the best for my 800 has been flush...i know that does not help...thats where i found no bog or lag

 

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turbolq4

Free Member

Sep 10, 2009

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meridian ID

• Jan 20, 2011

• #4

thanks, thats where all mine have been set as well. I know that low exhaust port height engines get better mileage, which in effect is what the rave does at low speed. So when you adjust them all the way in it should hold the valve closed??? This is just theory mind you, i just wanted to know if somebody had any real experience. I guess I will have to be my own test dummy.:face-icon-small-sho

 

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gman086

Well-known member

Feb 5, 2008

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Portland, OR

• Jan 21, 2011

• #5

turbolq4 said:

thanks, thats where all mine have been set as well. I know that low exhaust port height engines get better mileage, which in effect is what the rave does at low speed. So when you adjust them all the way in it should hold the valve closed??? This is just theory mind you, i just wanted to know if somebody had any real experience. I guess I will have to be my own test dummy.:face-icon-small-sho

Click to expand...

They don't hold them closed, they simply won't open as soon. That gives good low end pop and better mileage and is where they need to be for sea level riding. At altitude you want them to open sooner for more power when on the throttle with less heat soak - best for mtn riding. I've messed with them quite a bit. The more mods you do to your exhaust/motor, the less RAVE spring pressure you want or you risk detonation. With a stock motor, go 1.5-2 full turns out for mtn riding.

Have FUN!

G MAN