Turbo KA24E ?

[Nimex]

I was just curious as what would have to be done to turbo charge my car. I mean like everything that is needed, because this what I'll be going by when I purchase the supplies. Also, if the engine is in great shape, will a rebuild be necessary? Thanks for all the help, once again.

[SR20DETpower]

I would defintely rebuild a KA24E before turbo'ing it, most have high mileage, Im even going to rebuild my DE when it gets turbo'd just because starting fresh is so nice.

[Robs240]

Nimex I am new here also and sorry I have no answer to your questions but do have a question for SR20DETpower. How would you build a naturaly aspirated ka24e? I just got my car to and know nothing about 240's. Thanks a lot.

Rob

[Suislide]

you don't have to build a naturally aspirated KA24E. that's the engine that comes stock with all 1989-1990 Nissan 240SX's. from 1991 on, they got the KA24DE, which is the twin cam version of the KA24E.

[Robs240]

ok thanks. Do they sell a bolt on turbo kits for the ka24e? Thanks again.

Rob

[Suislide]

yes, yes they do. i'm not an expert on it though (i'm an SR20 man myself), so one of the KA guys could maybe help you out.

[SR20DETpower]

welp heres how it goes.... if it was me personally I would either transplant in a KA24DE to start with........ or just go the SR/CA turbo engine route.........
Heres some rational behind my thinking......
with the DE you get another boost of 20hp compared to the Single cam KA24E motor. If you wanted to build a naturally aspirated engine I would also stick with the DE engine, if you want to do an engine swap. Basic steps at building an NA 240sx
and I would do it in this order

1.-Short Ram Air style intake on the manifold side.. don't route it to the drivers side like stock..... move the MAF, cone style filter.
2-Header
3-Complete exhaust overhaul from the header back. I would try to custom make 60mm mandrel bent piping from header to the end of the cat, replacing it if u can....if not get a high flow cat....Then buy an aftermarket exhaust with good design and mandrel bends in the 60mm diameter area...you can find quite a few JDM exhausts if u look in that size.
4-Underdrive pulley
5-JWT ECU
6-Light Flywheel/Clutch upgrade(Shift kit, stall converter for auto)
7-Good set of grippy tires
8-Extrude Honed intake manifold
9- This next step would cover engine internals.....a wise man would just do it all at once...
-Cams
-new crankshaft
-KA24E stock higher compression pistons mid 80's years I believe
-Cam Gears
-test to get optimal cam gear settings and fuel mixture settings with the higher comp pistons.... recremend 93 pump gas for sure.

maybe I left a part out

with respectable tuning and a wise selection of cams/timing you would defintely be in the 175-180+rwhp range..... faster then most basic SR swaps... and most stock tired KA's dyno anywhere from 110-145




I wouldn't build a KA24E for an all motor street car personally.......
but if u want to keep the engine I would do a basic rebuild since most have high mileage for a turbocharged engine 100k miles+...... you can piece together a turbo kit or buy one already made up....usually a bit more expensive but better choice for the DIY'er who has backyard mechanic type tools and ability. Also if u wanted to swap in a KA24DE and turbo that....not a bad idea either.... you would take the same steps.

You also have the JDM engines.... the CA18DET turbo engine is 1.8L and around 140-160rwhp stock but has more potential then a NA KA for sure. That engine is a direct stock bolt on affair with hardly any, if not very easy customization tasks.... the SR20DET is for 91+240's chassis and bolts on into them but for your car you would have to customize your power steering lines or just insal 91-94 240sx ps lines in......



SR swaps www.srswap.com

CA/KA24DETurbo/other misc Nissan engine transplants(skyline engines) www.unstable-hybrids.com

and for the bolt on KA24E turbo kit...... this is one that I know of could be more...
http://www.realnissan.com/

7-

[SR20DETpower]

also after reading your first post...... your KA24E doesn't have that bad of mileage it could take mild turbo'ing in stock form now..... probably around 220-260rwhp depending on intercooled or not and turbo u choose. KA24E isn't a bad motor to turbo....many produce some high figures even above 400rwhp.... just giving u some other options but it seems like u want to keep the KA24E and it doesn't have that bad of mileage. and I do not believe the head of a KA24DE will bolt onto the block of a KA24E.

[Robs240]

Wow great info from you guys! THANKS. I am still learning about the lingo etc about 240sx's. I have been a v8 guy for a long time but I have always loved turbo cars! A well built NA ka24e will also suffice me for now . I did notice how long the tube is from the intake all the way to the driver side. I think i'll do the shortening of that first. Many thanks again.

Rob

[Nimex]

What kind of power would I expect from the kits from realnissan.com ? And is there anything else I'll have to purchase along with the kit? Thanks for the help.

[SR20DETpower]

it looks like they have options in their kits so I couldn't really tell them..... email them inquiring about what you would like and see if they can help you out getting it.

[TheLogikal1]

would it be wise turbo'ing my s14 considering i have 90k miles on it?

[SR20DETpower]

it would be ok with a smaller turbo like a T25 or 28, such as turbos on stock SR engines... with good tuning it would be ok... With a Bigger turbo like on a T3/T4 or straight T4 to run maximum boost 25psi or so I would rebuild the engine with some better pistons and rods.

[hexaine]

Ahem... I have no turbo knowledge:

1) What's the diff between high mileage / low mileage and turboing both of them? Pro/Con's? I have 170k+ on mine. What could I do? (1990 stock engine)

2) Wow, up to 260+ HP improvement? How much did these cost you (since you've probably done them already) and how hard was it to do?

Thanks! I'm sure more questions will brew from me later.

[nissanfanatic]

High mileage engines are worn out. Compression test is a good idea. Custom turbo kits are cheaper. Oh and it's a good idea to not bring up six month old threads, much less a year old. Just some advice. Start a new thread.