Fusion Motortsport - 477hp GTi-R

[Fusion Ed]

Some more info about it is here: http://www.fusion-motorsport.co.uk/cust ... yno-record
But basic spec 750cc inj, 3037turbo, external wastegate, forged engine etc..

[TM_S13]

sweet, nice results

[s200rat]

what sort of timing do you run top end on the pulsar SR with 1.6bar on a 3037?
generally interested to see the difference compared to a rwd blacktop.

[Fusion Ed]

Shall have a look and get back to you, It varies a lot between engines/builds however.

[s200rat]

thanks, on a blacktop with 3076 (pretty much the same) @1.6bar im down to 6-8degs ~5,000rpm and can add in a couple degrees over 6,000rpm

[Fusion Ed]

Similar figures, 11 deg approx top end, and 4-5 peak torque, that's with some room for margin with fuel quality.

[roastin300]

Only 4-5 degrees timing at peak torque? What kind of fuel are you running, pump gas? With E85 I can run 22 degrees timing on 18psi so around 1.20 bar. I plan on running 1.6 bar with around 20-22 degrees timing with E85...Crank that timing up if you have good enough fuel.

[s200rat]

is the 1.2bar on a Garrett3076/HKS3037??? its a big turbo so there is a huge difference in air flow at 1.6 Vs 1.2.

mine timing was on uk super unleaded (~98 octane). So Running E85 you can run more ignition but i wouldn't have thought 22 degrees would be manageable on a 3076 at peak torque. Is your base timing 100% correct? was ur car road tuned or dyno? with e85 you can go past mbt and not knock so if your running a true 22deg then it might be worth checking power at lower timing

Even with a 28rs and 2871 i would only be aiming for ~10-14deg at peak torque for anything over 1.2bar on 98 octane fuel.