Originally Posted by
SR20GTi-R
The header was not too big for the 2.4L, the intake manifold was too small.
2.25" choke is perfect for a 2.0 but too small for the 2.3 and 2.4L.
and thats why i modded the big tube from a straight 3" (no choke) to a 2.5" choke for use on the 2.4 motor. but that had no real effect on the dyno. you're right though jamie, i believe the reduced whp was a combination of things. too small intake mani AND t/b (70mm). i have no intention of using the big header on the 2.0 so its still up for sale.
i do have 1 question about the worked 2.4 head though.... i have a feeling the +1mm oversized valves may be too big for the 2.0 block, even with the kelfords. (bigger size reduces velocity?) using the stock mani and t/b.