Originally Posted by UpRev
That is true, but they exhaust cam is still adjustable. So gains should be viable without having to do $1500 in labor to swap the exhaust cams...
Since the valves are still connected to round blanks perhaps you still have some room to create various "cams" that will help the VVEL in fine tuning certain areas of the powerband...fine tuning
Given duration and lift go up with the system Im sure the window of change is based on the size of the blanks that are spinning...I could be wrong but I am guessing the followers have an influence and if the blank they are follwing has a changed profile your VVEL manipulation changes for that area or lift/duration spec for that portion of the rotation
Someone had said 300* of duration possible on the standard blanks
Thats a big step up from the tiny 03 cams...at least potential wise
Im not discounting it yet because being able to change the lift/duration specs on the fly is great but I was hoping for more adjustability in the levels ...independant increases in lift and or duration instead of joined at the hip changes.....
Still a good system but i-VTEC seems to be better still in some respects....50* of cam timing adj on top of 300*+ duration specs with 13+mm lift....I was hoping for that kind of system on the VQ...VVEL is still new from a manipulation of the cam standpoint but not as "tuner" friendly as I had hoped
I dont see turbos being a problem -- especially at lower boost levels --- its all in the tuning and parts selection --- an F20c motor which has high compression laid down 700whp on stock block/head etc...obviously on race gas with a huge turbo but considering the compression (stock) it was running 18-20psi on 11+:1 comp....pump gas 8-10 psi should be fine
Figure an 8-10% bump in power per psi and you have some pretty healthy numbers even on pump gas...it would just have to be tuned by a pro with a margin of safety
The biggest problem I see going turbo on the new is the high comp setup will like a long tube manifold and most if not all the "kits" today are using logs which wont jive well with the higher revs and comp of the new motor....couple that with the higher flow rates of the new new heads and VVEL and youll see that tuners will have to take a new approach
This type of equal length pulse manifold will be what these motors will want with boost more so than previous motors...it will be intersting to see how someone shoehorns a longtube equal length turbo mani in there...