just got an fj20e. currently being rebuilt right now. got a couple questions.

to make the fj24 stroker, you use a z24 crank. i have a z24 crank, and i was going to use stock ka24de pistons(with valve relief) that are oversized to 91mm. would this be an okay setup for running around 12-15 lbs of boost? im just hoping this is not too high a compression for a turbo motor. im really going for torque. stock rods and the cast pistons might hold up for a lil while im hoping.

also, does anyone have pics of how you tap the block for an oil return line?

thanks for the help guys. cheers

didnt think that the z24vcrank fitted, bore centers are wrong

Too true , FJ20's are unique in their bore centers and crank length . The best way to look at the Z24 or KA24 is a taller maxed out L Series Four because thats what their based on . At 89 by 96mm theres no where to go to increase capacity in the Z/KA . The 89mm bore is the maximum practical for the bore centers and 96mm is about the stroke limit for reasonably smooth running . The twin cam KA24DE is a real torque monster with long rods and about 6500 rev potential . Jim Wolf Technology in the US do Carillo Rods and good forged pistons which probably push them to 7000 .
I cannot understand why more of them arent used , the current poverty pac Navara uses a low compression (8.6) version which would be a cinch to turbocharge . The above mentioned firm do cast T3 flange manifolds as well . For those who don't know the yanks got S13's and S14's but with single and then twin cam KA24's instead of SR20DE/DET's .
Cheers .

But don't the KA24's flow crap, as compared with the FJ? If you have to use Carillo rods to get them to 7000rpm and the head does not facilitate big power, what is the point?

The idea is that a 20% increase in capacity makes a huge difference , torque wins races hp sells cars . While FJ's have relativly large inlet ports they're designed around mid range torque even for the same power output as an SR20DET . Big ports don't always mean big horsepower , have a look at Cosworth BDA ports or GTR ports , they're not huge . As for bore and stroke , look at Lancia's Delta Integral or Audi's 5 cyl Quatro . Both purpose built turbo engines having bore diameter less than stroke length , both winners of their time . The KA24 is much shorter in length than the FJ and parts are easy to get new . JWT does cams , springs etc for them as well .
The WRC cars don't rev much over 6500 due to inlet restrictors and compressor surge , though ALS helps lots .
With forced induction the extra capacity helps spool larger turbos with less restriction so the torque curve is much flatter . Average power (of an engines speed range)is more useful than lots of top end , ask anyone who's raced tarmac or dirt .