[RallyBob]

What kind of HP do you think youd get out of a 1.9 bored 100 over with the 11:1 domed pistons, dual sidedrafts and a racing cam? Close to the 200 mark?

Without serious headwork you'd probably never break 160 hp. Most of the full tilt racing Opels out there (1.9 litre .040" over) are about 172-178 hp....there seems to be an imaginary 'wall' that makes breaking that number difficult.

I know of a couple of 1.9's flirting with 205 hp....a few 2.0's making 220+ hp (not for street use!), and a few streetable 2.2's making 215-225 hp. The head and camshaft are ultimately the limiting factors for hp production.

Bob

 

[RallyBob]

So how quick is everyones GT with these modified engines at around 160 - 170 hp?

0 - 60 times?

It depends on available traction, transmission gearing, and final drive ratio. I can attest that a proper close ratio tranny can be worth a bit here, and even more from 0-100. Anywhere from 5.5-7.5 seconds.