dat141 that is impressive. I figured 125 BHP would be about the limit for an A12 under 8500 RPM.

Can you estimate for us what it would cost to have a shop build an engine like yours? (120 rwhp A12 engine)

my a12 that i had got 94 kwatw (126hp) with injection and 15 psi but i believe that the guy i sold it to got 104kwatw (140hp) in the colder climate. all with a stock bottom end and only revving to 6000rpm

My engine was GX head 54/86 cam 11:1 comp on oct98 fuel 40mm webers and lightened fly..reve'd to 8000rpm max pwr was 106hp at 7200rpm.
NOW the most Ive heard from a N/A A series was John Taylor's knife crank roller cam and rockers big ports motec and 50mm quad throttles...126hp at wheels.
With turbos the sky is the limit with funds...F1 used to push out 1500KW with 1.5 litre V6's used to last 5 laps for qualifying and that was it.....
300hp is achiveable but as Chris said not as a daily.
With mild work and twins will have alot of fun out of 110rwhp in a car thats 650kg... its not about outright Hp...

Ah, it seems 125 HP is either "turbo" or "big dollars". Take you pick.

My engine is a A15, not an A12, running 79mm pistons at around 12:1 compression with 45mm throttle bodies running on 98 pump fuel. I built the engine myself so I'm not sure how much it would cost to get it done by a workshop. I probably spent around about $1000 on engine bits and machining that i couldn't do myself (mainly crank balancing), plus probably close to $2000 on the computer and fuel system to run the injection. The dyno I used is an old water retarded one so i'm not sure how accurate it is. I've seen Chris Petersens' racecar rattle off an easy 120-125 at the wheels on the same dyno, which has basically the same setup as my car, aside from some baffling in the sump which I don't have.

methonal injected n/a a15 1548cc on engine dyno 184hp/149ftlbs torque, on chassis dyno open wheeler race car direct drive(dog box) same engine 178hp 7700rpm at wheels ...I was happy...

Wow thats pretty impressive!

Anything thats roughly double or over the standard hp figure is doing pretty well, in such a light car as the 1200 and 1000's are those sort of figures would be mind boggling!

Bige- obvoiously it was a race engine, how long do you think that particular engine would last under race conditions?

I got one very close to the same figures been in race car 4 seasons untouched approx 60/70 shows still going stong good leakdown results,normally refresh every season 20 shows , change rings /bearings /springs where needed,

bige have you worked out if offset C sleeving an a14/15 block will net 80mm?

no1 .050 towards front, no2 .050 towards back, no3 .050 towards front, no4 .050 towards back. thats with a 3.188 (B liner). Got 1 here done (fresh never run bored to 80mm} and block filled top and bottom with approx 60mm water passage.