Try and get maximum tune out of it as it currently is.
Does'nt help you try and improve on a engine that does'nt deliver from the start.
Maybe something small is wrong.
Look at timing and your SU's.
What is the precise specs of the engine and current tuning settings.(timing,etc)
Did you have a gas analizer into the exhaust while the run was done?

only problem if i come to your guys, they dont work weekends so no good for me nowdays.

i wouldn't throw the su's .... remember unfam's wallet is usually pretty light ... and the driving ability ... and the tyre selection ...


.........

i would throw the SUs over the webbers into the bin for performance....ive noticed a huge difference going from SUs that were designed for the engine to untuned dellortos (as in standard alfa jetting and mixtures screws just turned one turn out)

30% !!?? even better ... looking at around 112hp at the engine

Su's over Webers for performance?????

I'm getting the impression you haven't driven a well sorted Weber fed car Sidedraft?

Edit: Sorry, just realised you were comparing SU's to a single downdraft in which case I tend to agree that th SU's would be the better option.

i thought drivetrain loss was 30%...

ccc...

cam, compression, carbs

so i'm looking at around 78.18hp ATW .... if i use your 15% driveline loss i could be looking at around 92hp at the flywheel .... better get cracking mik
get it straightened and bring it down here for a tune - pretty cheap and the guys definitely know what they're doing

I would take the SUs over the weber for performance.