Weber problems on new 160 hp engine in Cincinnati

[fotsyr]

Rohan, my dyno guy, RIP, dynoed a 1690cc T/C with Dave bean 150hp cams. Fitted to a Caterham 7. It pulled from 2-7000rpm with absolutely no issues. Head work was minimal. Actual hp was 147.

chris

[rgh0]

Rohan, my dyno guy, RIP, dynoed a 1690cc T/C with Dave bean 150hp cams. Fitted to a Caterham 7. It pulled from 2-7000rpm with absolutely no issues. Head work was minimal. Actual hp was 147.

chris

Hi Chris
Yes you can certainly build a 150 hp 1600 or 1700 cc twin cam with a good flat torque curve suitable for road use with minimal porting . With good porting you can push that to 170 hp at 7000 to 8000 rpm, without much affect on the torque curve in the mid range, The key is a short duration cam ( 285 degrees seat to seat) with the highest lift possible (typically up to 0.440 max can be fitted into 285 degrees)

cheers
Rohan

[2cams70]

As with most things in life it’s what you do with the tools you are given and not necessarily the size of those tools that makes the difference.