|
From what I've heard the SU carbs have plenty of flow until you rework the engine $ignificantly to increase the upper rpm band. Don't know anything about the Pennspeed modification.
The original B18 in my 63 544 (it now has a 2.2 liter B20e) had a VERY low end torque cam. It had tons of low end torque but faded rapidly as the rpm's rose. I made a large improvement by replacing the cam with a stock Volvo FI cam (the "D" grind). This wasn't a terribly hard task - took an afternoon. I think Volvo put 'slow' cams in the 544 to detune them enough to make sure they were slower than the P1800 - which had the same engine and 500 extra pounds to haul around.
Following that the main bottleneck is probably the exhaust and single downpipe manifold, as Mr. Fluitman posted.
John Mc
95 Jetta GLX - VR6+5spd=Vroom!
71 1800e
63 544
|