Read this lot.

Horsepower ain't always Horsepower:

Horsepower Explained

Chris

i dont get it, all the cars sold in america seem to have more power than the exact same model here, i thought you guys must have better juice but we get 98 octane here

actually i didnt think new cars would run on that crap you speak of

if you know what your compression is you can answer your turbo question 9.0:1 =no turbo 8.5:1 =turbo. keep in mind that your cast pistons are weak and will not tollerate detonation, prevent this at all cost or it will KILL your engine. if you choose to go na go for the highest compression you can afford gas for.most likely this will be arround 10.0:1 in the states as we get pee water for gas 91oct max



boost good verry good BANG!!!
boost bad verry bad (NOT!!!!!!)

Gday fellas
Ive got a 1000 with a practically brand new A14 that is beggin to be unleashed
Whats the go if ive already got a downdraught webber, electronic fuel pump and 2 1/4 inch exhaust with a locked diff??
Wanting some serious horsepower, whats the best option a turbo? if possible or bit of head / internal work? Go it the same as the A12 like in the previous message?

By the way this site is swweet, everywhere else is overrun with 510's n 1600's, nice to see ppl who know what they're talking about here as well

Any suggestions would be muchly appreciated .