Lasse wankel

I just want to share some hp and torque numbers on a 12A standard bridge motor i built for a Swedish racing class up to 2 litres. Some short info:

Street and bridgeported with exhaust sleeve removed.
Coated 4.65 kg 9:4 cr rotors balanced
Weber 51 IDA with 48 mm chokes 250 main and 120 air jets F7 tube.
ProSpark digital ignition set at L 21deg T 16 deg.
EWP Electric waterpump NGK BUR 9 EQ for L and SD 10A for T
600 mm primaries with inner dia 47 mm to a merge and then a cone to
3" 100 mm exhaust then a 3" HJS 100 cel race cat and 1 straight thru 3" silencer.

Power max 253 hp@8500 rpm maximum tested rpm 9100.
Torque max 225Nm or 162 ft/lb@7500 rpm.

Engine had over 240 hp from 8000 rpm to 9100 rpm, a really broad power band.
I hope to build a new 12A engine this summer, a monster bridge that hopefully
will make some serious hp

/Lasse

diabolical1

iTrader: (3)

sounds good. as far as the powerband is concerned, what range of RPM are we talking about for the torque curve? also, just curious, why run without the exhaust sleeves?