you must be running a very lairy cam. what are the specs? must be over 276 duration with very favourable lift. but without larger valves?
my car (mk2) -
my car at midland vw had 8 runs and started at - 127.8hp@4917/138.5lbf.ft@4595 @ CALCULATED fly
and finished at - 134hp@5712/144.6lbf.ft@4513 @ CALCULATED fly
when we started the timing was retarded slightly, and he adjusted it not to 6'btdc but to where it produced the most power. peak power had shifted nearly 800rpm up the rev range!
here is my spec-
k&n filter in trumpet removed airbox
newman 268'
matched inlet
ported head 35mm/40mm
2.0 agg 70k
lightened balanced flywheel circa 30% reduction
matched and ported ex manifold
milltek full system
now. the torque figure is what i expected. but power, no. no perameters for the dyno were messed around with to invalidate figures. and i was shown figures from other cars (std) to give validity. its a true reading rr. if i were at stealth, i would have gain 10hp easily. the operater had taken a car on said rollers and proved indeed they were optimistic.
by putting in a lairyer cam i would of gained PEAK POWER. pub figures. i did this (piper276) and guess what? it ruined drivibility
funny one this. the milltek was a 2.5" system and was embarrassingly loud. so i put in a std vw filter, and a jetex 2" system. and tweaked the AFM. it feels so more responsive, and quicker. hmmm, bigger not always best.
im a real man now. so im building an abf. 150 std. be circa 170 with existing mods to car and a few extras. piperX filter, ported inlet/ex manis, jetex system, fueling chip
