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View Full Version : KA24E turbocharging weakpoints



g81981
02-12-2002, 09:27 PM
I have a spare ka24e now, since I have swapped in another ka24e into my 89 240sx. I was planning on doing an sr/ca swap. But I kind of considered rebuilding the spare ka24e for turbo (I live in CA, so legality is strict). I know that I would have to replace the cast pistons (I think the rods are forged already) and get some forged ones. Does anyone know where I can get forged pistons (or rods if they aren't forged already) for a ka24e?
The compression I am planning on running would be 9:1 or 9.5:1 (still deciding)with jwt ecu,upgraded injectors,fuel pump,z32 mafs.
Where can I get fuel injectors? (Since the ka24e injectors are side feed and ka24de has top feed, it seems rather hard to find them)
This is just for a street setup, I'm not planning to make a dyno queen. Looking towards 250HP and reliability.

ADAM HUTCHINSON
02-13-2002, 05:25 AM
injectors...from RC
pistons...ross, JE, arias
rods...crower, manley,

weak points....pistons....cooling system, fuel delivery system...

**DONOTDELETE**
02-13-2002, 02:09 PM
I heard this, I am not sure if it is ture, but are cast iron blocks (like the KA) prone to cracking, and aluminum blocks (like the SR) prone to warping? The same person said that an Aluminum block engine with Cast iron Cylinder Sleeves is stronger than both the other options. If ture, a sleeved SR20DET would be the strongest option you could get right?

[ 02-13-2002, 02:11 PM: Message edited by: 240SX-S-15 ]

ADAM HUTCHINSON
02-14-2002, 06:32 AM
iron block is strongest

**DONOTDELETE**
02-14-2002, 08:17 AM
for fuel injector you can just switch to a top feed rail....steal one of an altima or a newer 240...and you can then run all the common injecors...the 300zx ones or the sr20DET ones

02-14-2002, 08:36 AM
Originally posted by alchemist:
for fuel injector you can just switch to a top feed rail....steal one of an altima or a newer 240...and you can then run all the common injecors...the 300zx ones or the sr20DET ones<font size="2" face="Verdana, Arial[/img]Huh? The KA24E already HAS a top-feed fuel rail. The KA24DE/SR20DET/VG30 fuel rails are for side-feed injectors.

Asad