What sort of power should I be getting from this??

[Jamie.bowen]

I have a nova with a c20xe in... It has a standard rebuilt bottom end, has had the head ported and polished and all gas flowed, running piper fast road cams as with twin 45 weber carbs. All mated up to a f20 gearbox with a quaife LSD. All parts used including cams and carbs were brand new. Just wondering roughly what I should be hitting on a power run at the wheels or at the flywheel?

[novalovingned]

800bhp maybe! It's a red top bro lol

[Jamie.bowen]

If only!! Haha

[Adam]

180ish hp IMO.
Depending who sets the carbs up.

At the fly

[Jamie.bowen]

A garage called AB been told there the best in my area. Thanks for that gives me a guideline

[MK999]

140 to 240 depending on how good the headwork is and how high it's revving, probably get a better power band on 40's though.

[phunkynova]

As MK999 say's it's down to how good the work is on the head.

[Jamie.bowen]

Right ok thanks just wait and see then haha

[mk1nova_rich]

170-180bhp

[Jamie.bowen]

^^^^ at the fly? Or wheels?

[mk1nova_rich]

Flywheel

[Jamie.bowen]

That's what I was thinking around 180 at fly will put it at around 150-160 at wheels? If I'm right in thinking that you lose about 15%??

[GRUNT 16V]

fly

[meritlover]

too many variables to predict a power output that would be meaningful

depends on the quality of the ign control, the head work/porting, choke selection and tuning of the carbs.

[Stuart]

Saying STD bottom end means some rather mild cams.

anything more than 180 at the fly is a lie.
and the losses arent linear, here is a graph of the losses for my VX when I had it on one of the few dynos I trust.
https://lh5.googleusercontent.com/-g1ekcx-x-rU/SNtqAYJ0SkI/AAAAAAAABoc/UD2uarIfsq8/s640/F23_single_roller_loss.JPG


Losses vary with:
Ambient Temp
Tyre Temp
Tyre pressure
Tyre condition
Number of rollers
Ride height (driveshaft angles)
toe/camber etc
gearbox oil
gearbox condition
Engine mount condition
and many more