Similarities between CA18 and CA20

Gary57 · Post by **Gary57** » Tue Mar 18, 2008 12:31 pm

What makes the CA20 different from the CA18?? Surely it cant just be bored that big.

Why not make a CA20 rather than a SR20??

Vlade · Post by **Vlade** » Tue Mar 18, 2008 12:42 pm

I heard its just the crank and rods...

But yeah... Not allot of them around, and the motor is not a square design no more where your bore and stroke is the same as with the CA18

Gary57 · Post by **Gary57** » Tue Mar 18, 2008 12:59 pm

Yes but would gain in torque with the added stroke.

veecee · Post by **veecee** » Tue Mar 18, 2008 1:28 pm

and lose revability!

the ca20 crank is weak! dont do it man!

Doctor G · Post by **Doctor G** » Tue Mar 18, 2008 1:32 pm

What makes the CA20 crank weak VC? CA18 is 4CW too.

Then again, CA was built for boost right.

What about a KA24 crank? Can that fit in a CA?

Saw a guy doing a RB20DET in his s14. He was going ape over the way it revved so I'm guessing it's oveer-square. Also, he kept hinting that his mate in a RB25 was his biatch!?

veecee · Post by **veecee** » Tue Mar 18, 2008 1:34 pm

ya the RB20 has tiny little pistons. lighter, smaller, revs quickly!

veecee · Post by **veecee** » Tue Mar 18, 2008 1:36 pm

RB20 - 2.0 L (1998 cc, bore: 78.0 mm, stroke: 69.7 mm)

Doctor G · Post by **Doctor G** » Tue Mar 18, 2008 1:36 pm

Okay lets not jack the thread.

Will a CA18 crank fit a CA20 block? That should give an over-square design with somewhat larger displacement?

I know a CA20 botton end can be done, just a bit of work do make pulley's line up etc.

Gary57 · Post by **Gary57** » Tue Mar 18, 2008 1:56 pm

Na I am not looking at doing it VC was just thinking if it would work lekker.