hi everyone, its been a few months since last post but i do spend some time each day reading up on what going on in the group.
I had the opportunity to get my speedster on a chassis dyno a couple of weeks back. And wanted to get some feedback on the data. Car runs very well but i am curious if what steps you might recommend to get a bit more Torque out of the existing engine.
Engine specs as i know them....
1915cc as supplied from VS back in 2010.
94 mm X 69
I do not know what cam is installed.
Tri mill Hot Dog exhaust (with heater boxes)
New Weber IDF 40s (jetted using a wideband and a lot of road time.) Replaced the Empi 34s. that came on the car. by the way this had a significant improvement above 4k. rpm
Stock heads no porting.
Results were about what i expected.
Max power = 67whp @ 3980 rpm Average power = 58whp. Based on typical calculations this would be about 85-90bhp (at the crank).
Max Torque = 97.5 @ 3360 rpm Average Torque = 70
AF Ratio is pretty flat at 12-12.2 up to about 4800 then drops to around 11.
sorry for the crappy screen shot.