Originally Posted by
turbofied 
It held power nicely flat as a table.
4age Itb's are in his setup
Thanks for the reply.
Originally Posted by
sssautomotive Yep mine held through to 9000rpm with only a 2-3 Hp wave or flutter between 6500-9000. , engine setup is pretty basic with a P11 SR20VE 184-C cams supatech valve springs with Ti retainers, std valves and porting,
N1 pistons uncut, std rods and the std VE crank balanced. A cromoly flywheel and excedy clutch. Intake is a set of the black 4age 20valve quad 45mm. Exhaust is is a one off 4 into 1 I made to spec's of my engine builder and I feel still need tweeking. So as you can see its a real basic and budget build but produces a real good power band so makes it competitive in my class of racing ( Improved production under 2 litres circuit racing) but still leaves me chasing them Honda's, although recently at our nationals it ran 2nd to a AE82 with and Altezza 3SGE Beams engine on our biggest horse power track in Oz, with our big horse power Honda 3rd. Seems the SR20 torque is better than the Honda K20's so with another 20Hp will be a real challenger.
My next test will be a set of 44mm slide throttle's to see if they pick up air speed in the inlet.
Nice setup, and it's refreshing to see somebody trying something new.
As for the cam timing, I've also found the VE to be insensitive to exhaust timing. I have stated this in previous posts about cam timing. But I'm surprised you and Clint have found the intake to be the same.
Since both you and Clint have cylinder head work, I would rule out "restriction" in your setup. Through my own testing, I've found gains going in the opposite direction. Try choking up certain points in the cylinder head and header. Take a look at the 20V exhaust manifold for inspiration. You can pm for the specs.
Needless to say, the key to unlocking the potential of the VE is to find the areas where it's sensitive to changes.
One more thing I like to point out for those considering running 12.5 mm and higher cams, be aware there will be stock retainer to valve stem seal interference. I've measured it and it's .480"-.490"/12.1-12.4 mm.
If anyone has a Supertech or BC retainer, you can ship it to me and I will measure it and share the results with the forum.
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