Yes, it should be "closed" at idle. When they first came out on the FZR1000 EXUP in 1989 I think that the valve was only fully open above 6000rpm, on a higher-revving new 750 it might not be fully...
Type: Posts; User: Scotty
Yes, it should be "closed" at idle. When they first came out on the FZR1000 EXUP in 1989 I think that the valve was only fully open above 6000rpm, on a higher-revving new 750 it might not be fully...
Hi Dan,
You're correct, it's the same as a Yamaha EXUP valve, I think all the Japanese manufacturers started using them once Yamaha's patent expired in the late '90s.
The valve is "closed" at lower...