I guess that's what I have to weigh up. What's going to be faster, a bored out worked a12 or a boosted a10? I'm guessing to get over 100hp from a worked a12 will require an a12 bored, stroked, ported head, high comp pistons and worked cam along with a pair of webers or efi. I'm thinking an a10 with almost stock oval port head (just valve springs done), head studs, super/turbocharger and efi might be a more easier cost effective option? If they can get 100kw from an a12 carby turbo, would it be reasonable to think with a little more work (or boost) that I can get the same from an a10? Would like to know people's thoughts who have much more experience then I do with the a series

Why don’t you put A14 internals ie crank etc in an A12.

I suppose I didn't write that correctly. Using 5 mains will make it more reliable to rev thus gaining a bit more power?


What I'm trying to do is gain the most power for street either using a naturally aspirated a12 or I can go a forced induction a10 legally. Im not allowed an a14 or a15. I was thinking a mix of standard a10 bottom end with head studs,stock h75 or h89 head (depending what I can get hold of) with decent rated double valve springs and as much boost as I can reliably go. Was going to look at efi aswel and aftermarket computer. I know the 12s do very well, I'm just worried about the a10 bottom end if doing up to 8000rpm. Being that it's street and not revving for a long time, do u think the a10 bottom end with good bearings be ok doing that kind of boosted rpm on street?

5 main bearings won't make any more HP

More boost will make more power

So really to get the good power I really need to get 5 main bearings and a heap of boost lol

Supercharged?

With an AMR500 blower maybe instead of the stock 56HP it'd get 70HP?

http://www.kemotorsport.com

Ddgonzal nice to know :)

So im wondering what sort of power to expect from a stock a10 supercharged engine with just headers. Would anyone be able to give me a hp figure?

Quote:In the last 55 years?

yeah that's the only limitation. A10 will rev higher than 6000 but not as robust


> If u say supercharged an a10 ... would it have no issues?

Same issues as an A12. For example, if you let the engine ping it will destroy itself after a while


> being that it's only 1000cc's, would u be better off only using an a12 round port head?

Nah just use the A10 head. Same size round ports. If you want high-RPM power port the head. However the inlet and exhaust manifolds are slightly bigger with the A12

So are the limitations with a 3 bearing crank only the rpms? If u say supercharged an a10 but didn't take it over 6000rpm, would it have no issues? Also, being that it's only 1000cc's, would u be better off only using an a12 round port head?