Anthony have you actually mounted a supercharger yet to your motor. I am thinking of putting one on an A15 but the length of it is a little bit of a hassle. It looks to me like it would
have to be mounted really high on teh drivers side so it is above and clears the dizzy. Or maybe on teh passenger side low but I don't really want it near the exhaust. Have you got that
far yet. Anyone else done one. I am talking about the Toyota superchargers.

Heya Anthony. If i were to put the A15 crank in my engine the total CC would be around the 1610cc mark. Mines about 1510cc at the moment with 120thou overbore. 140thou is the biggest u
can safely go and with an A15 crank u can get to about 1630cc. I have heard of a stroker A15 crank that was supposed to give it about 1700cc. By my calculations, the crank would have to
be about 86mm with 140thou overbore. Thats a 4mm longer than the A15 crank and 9mm longer than the A14 crank! Probably would be a very torquey engine and a redline of 5000rpm!! I
personally think 1700cc is out of range for the A series.

As for the supercharger, im not really sure on which crank to use. The A14 crank would be good with a turbo but i think a supercharger would work well with both cranks. And the cam i
wouldnt have a clue about either!! Just a lot of trial and error i guess.

Scott
Davo

Sorry to bring this topic up again, i have a question to ask. Coz you have bored it out to 120 thou, if you were to put the a15 crank back in it, what cc's would you be looking at here,
just curious to know how much they differ.
What size could you also bore out the motor out to. Would 1600-1700cc's be out of the question. If you can do this what size would you have to bore it to in approx. thou. Has any one done
it. Is it a reliable motor and is it worth doing for the extra power?
One other question, which cam in this sorta situation would be best suited to a supercharger? Superchargers already increase the motors torque but would the a14 crank help it to produce
more power or would it more likely be the a15 crank.

Dimlight, no way was i saying to throw a rotary in your 1200. Just comparing the rotor revability to the A14 revability. I agree that engines should come from Nissan/Datsun,
not Mazda or Toyota. It sorta wrecks the car having a non nissan/datsun engine. No point in owning a datto if u dont want datto power!

Scott
Davo

Scott Davo, I'm asuming you're asking me which I'd prefer. The short answer is both. Like I said, the torque difference between the a15 and the a14 won't be much. I'd probably opt
for the a14. I agree that the rotary is a hot ticket but I like to keep things in the family. I'll only put Datsun/Nissan engines in my cars.

That is true. What would u rather in a 730kg car? RPM or Torque? I know what i would want. Why do u think rotarys go hard. Theres not much torque but
a shitload of RPM!

Scott
Davo

Another thing to think about on the A14 vs A15 argument is that a longer stroke will yield more torque. It is probably negligible, but there nonetheless. A shorter stroke will rev
quicker and higher. Higher RPMs makes more horsepower. I guess what I'm trying to say is if you want torque go with the A15, if you want top end power go with the smaller crank
engines.

Yeah this is what i thought aswell. The A14 crank basically wants to rev harder than the A15 crank. I initially wanted an A15 engine but i soon realized that bigger cranks dont allways
produce the HP. Its the right combination of alot of things that produce the HP. Not saying that A15 race engines dont go, i've seen some A15's hammer along. I knew that Andrews A14
was a very competitive engine and had alot of track time so thats why i got that instead. And i must say, im very impressed so far :)

Scott
Davo

What it is Andrew, is the shorter stroke of the A14 has a much better power band than the longer stroked A15. When I built an A15, it wasn't near as quick through the gears as
the A14 motor. More CC's means more HP but if they are obtained with a longer stroke, it just plain doesn't rev as quick.

anyone help me if i'm wrong, but i think it is to lower the stroke so that the compression drops for
a turbo motor