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Discussion Starter #1
The Honda Ep3 Si motor (k20a3) does not have oil squirters, and the oil cooler the K20A2 has.

Of course, the internals are different... different crank, pistons, rods, even bearings....

But like the B series, many engine builders remove the oil squirters so if you are planning to sleeve the K block, the A3 block could be an alternative.....

If you decide to use it to make a poor man's K so to speak... you will end up with a low compression no oil squirting kind of motor... Of course that can be taken care of with an appropriate gasket and so on...

The good thing about the K is that there is no need to drill for VTEC anymore... Although there are different kinds of VTEC....

The K24A block has the same kind of iVTEC as the k20a2 so the frank makes sense as far as compatibility...
 

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nikos said:
The Honda Ep3 Si motor (k20a3) does not have oil squirters, and the oil cooler the K20A2 has.

Of course, the internals are different... different crank, pistons, rods, even bearings....

But like the B series, many engine builders remove the oil squirters so if you are planning to sleeve the K block, the A3 block could be an alternative.....
1.Factory oil cooler on the A2 = gay

2. If you use the a3 block do not use stock internals.

3. Oil pump, pan, and water pump are different on the A2's motor.

4. A3 and A2 water passage pieces are different due to a screw so use the peice that fits.
 

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Discussion Starter #4
A3 and A2 water passages are different. Also the crank of the k20a3 is weaker.
 

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what if i was going to do a k24/k20 frank.Keep the oil pump and water pump for the k24 and would the oil pan on a k20a2 fit on a k24 or are the oil pans of the same cast aluminum.
 
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