Just thought i'd let you guys know. There is a write up turning an F20C into a 2.4 liter engine with stock bore using the k24 crank and rods. Check out the latest issue of Turbo for more info! woooooooo.

sleeved block + overbore + k24 crank and rods = 2.7 torque monster???

 

you can't overbore it to 2.7 from 2.4. The walls are too close together and you'll run out of sleeve before you even come close to that displacement.

One other thing to consider is that the K24 parts are not as good as the F series parts. They are cast parts, and are heavier and weaker. I don't think they'll handle the high RPM operation as the side loading will place a lot of stress on the rods and very likely either deform or break them over time.

I had always figured you could use the internals of the K as the bore spacings are the same as well as the bore (maybe not exact, but very close).

 

good points.

it is still good news tho, as you will be able to buy forged aftermarket k24 goodies and have the best of both worlds.

i dono, not too happy about increasing the piston speeds tho.

 

any link to the magazine?

 

Phifer , uses this setup in the RSR drift car ,So yes it is capable . I spoke with his mechanic at SEMA last year and we swapped #'s. The crank does need to machined, it does not just drop in . And I want to say it is a H series rods not K .There are a few cars running around with this setup . I want to say the Amuse car has a similar setup as well .

You are correct though about not being able to bore it to 2.7 .



Hey Matt , What have you been up to . Do you have my plates still or were they on the car when it got stolen ?

 

Actually didn't they use the k24 crank and then use the f22 pistons and rods? From what I understand they only had to machine the face of the crank so they could use the factory flywheel and slightly machine down the rods to fit the crank. I kept thinking about this yesterday and I'm just dying to see someone do this with ITBs and a built head

 

The K24 cranks I've seen are forged, not cast.

 

Oooh...cool post. Tracking this mess. Bump.

 

will the compression be same?

 

Does it say what compression this setup yields? I wonder how much power (n/a) this would produce... Always gotta have a backup plan in case the motor in your car takes a dump.