VRIS stuff

ScooterBovine · Post by **ScooterBovine** » July 2nd, 2005, 3:22 am

Can someone sum this up? It's too technical for me to comprehend. However, I think that if I understood it better, I can better understand how the V6 engines work. Or, the VRIS portion of them anyways.

http://www.geocities.com/mikey9t6/car_uvwxyz_vris.htm

Macen · Post by **Macen** » July 2nd, 2005, 8:58 am

The length of the intake pipes vary depending on if you have the throttle more than 75% open and on the RPM of the engine. At different RPMs the butterfly valves can have four different setups; both closed, no. 1 opened and no. 2 closed, both opened, or no. 1 closed and no. 2 open.

Depending on the setups, it gives you different horse power curves through the whole RPM band.

snellgrove · Post by **snellgrove** » July 2nd, 2005, 11:10 am

I think it basically changes the overall length of the intake, keeping the air at a "resonant" state.. which basically means, you get more air flying through the air-in valves for more of the rev range = broader, more availble power band.

XxantwawnxX · Post by **XxantwawnxX** » July 2nd, 2005, 7:28 pm

Just changes the manifold for best hp/tq for what ever speed your going.

vozaday2000 · Post by **vozaday2000** » October 8th, 2005, 4:13 pm

sorry to bring this thread back but the u tube is the tube that is to the left of the intake manifold when looking at the engine. so would it benifical for a k8 motor to have a kl u tube. cause the k8 intake manifold has the funky shaped u tube. and it would cause a loss of power to put the k8 u tube on the kl. do i have the theory correct or am i way out to lunch?