ANyone turbo'd a KA24?
Registered User
Joined: Oct 2002
Posts: 178
From: Charlotte, NC
no nothing like a swap. Buy a kit if you are unsure what goes on with a turbo but if you want to build one your self, besides being able to fabricate pipping here is what you will need.
Turbocharger/turbine
wastegate
inncooler
BOV
turbo exhaust manifold (probably have to be fabricated, i haven't found one yet)
vaccuum lines
EGR line blocker (you could weld it shut)
3" air filter
down pipe
and recommended to have if you are going to be running much over 6psi:
Oil Cooler kit
370cc or bigger injectors but some are top feed so you will need a new fuel rail
fuel regulator
fuel pump
2.5" or bigger catback and eliminate cat
forged pistons 8:5:1 or 9:5:1
probably more
Since I am only running 6psi I can do it on stock internals but i do have a 2.5" catback, 3 in K&N cone, 91 Cams but otherwise stock and have no problems running 6psi. I would like to recommend to anyone getting a Stage 2 Clutch and a Stage 2 Flywheel though. They are my next investment.
Turbocharger/turbine
wastegate
inncooler
BOV
turbo exhaust manifold (probably have to be fabricated, i haven't found one yet)
vaccuum lines
EGR line blocker (you could weld it shut)
3" air filter
down pipe
and recommended to have if you are going to be running much over 6psi:
Oil Cooler kit
370cc or bigger injectors but some are top feed so you will need a new fuel rail
fuel regulator
fuel pump
2.5" or bigger catback and eliminate cat
forged pistons 8:5:1 or 9:5:1
probably more
Since I am only running 6psi I can do it on stock internals but i do have a 2.5" catback, 3 in K&N cone, 91 Cams but otherwise stock and have no problems running 6psi. I would like to recommend to anyone getting a Stage 2 Clutch and a Stage 2 Flywheel though. They are my next investment.
Registered User
Joined: Feb 2003
Posts: 191
From: Frederick, MD
I have a turbo'd KA in my s13. The downpipe, i/c piping and exhaust manifold were all custom laid out. he KA's have awful fuel output stock so for turbo, you need to up the fuel. I have 370cc injectors, fuel regulator, pump and custom dual outlet top feed rail. I'm running a 2.5" downpipe,3" testpipe and 3.25" catback as well as a fmic and a 3" K&N filter thats down in the fenderwell (that was tricky..cold air for a turbo 
you'll also need a new ECU for all the mods. Talk to the guys at Jim Wolfe Tech. They're awsome. I'm running a slew of other stuff..check out my car in the Registry. If you have any questions..ask away.
you'll also need a new ECU for all the mods. Talk to the guys at Jim Wolfe Tech. They're awsome. I'm running a slew of other stuff..check out my car in the Registry. If you have any questions..ask away.
Registered User
Joined: Oct 2002
Posts: 178
From: Charlotte, NC
You can safely run about 7-9psi on a stock fuel system but once you go above 7 I would recommend at least a new regulator. Make sure you keep an eye on your gauges though. Oh and you can run about 9-10psi on your stock ECU.
Thread Starter
Registered User
Joined: Jun 2003
Posts: 26
I'm shooting for about 240-50ish to the wheels. So guesstimating the tranny loss, drive shaft loss, etc. (at first I was thinking in MR2 terms and forgot about the extra loss...) I'd say I'd probably have to have about 300-310 to the flywheel. Am I right? I dunno, how much PSI would I be looking to push with a medium sized turbo?
Registered User
Joined: Oct 2002
Posts: 178
From: Charlotte, NC
The USDM chasis should be able to hold about 350 but if you go much over that you will need to look into having you chasis strengthened. I believe that is about right since I was told I would need to rebuild my chasis if I dropped a Chevy 350 in my 240
Registered User
Joined: Jun 2003
Posts: 282
From: Green Bay, WI
the motor internals can safly hold about 12psi, 15 if tuned by a very skilled tunner (so im told by people on otherforums with this KA-T's) the chasis does not need to be rebuilt/strengthed, thoes same people have said nothing about that, plus i no i guy who had a KA-t and now has an RB26DET and hasn't rebuilt/streingthend the chasis thats all i no so far, plus the parts list that was already given, o and instead of a new/reprogramed ECU u can get a S-AFC or something similar to that too, or if u got big bucks get the Power FC. there are many options but i do recomend upgrading the fuel system regardless 
Registered User
Joined: Feb 2003
Posts: 191
From: Frederick, MD
Originally posted by ZainL
would it be safe if i were to bore my ka out to 2.6 and then turbo or what?
would it be safe if i were to bore my ka out to 2.6 and then turbo or what?
I think JUN makes a destroke kit for the KA to bring it down to a 2.2 so it revs higher and smoother. But hey, thats why I love my turbo KA..i've got gobs of torque.
