SOHC KA turbo action

[Gladman]

Finally got some time for my own car. Installed my new block, clutch, chainset, head set etc.

Now that thats in, i can finally start piecing my turbo kit together.

Managed to pull the manifold off this afternoon... turned out pretty mint, cost me about $75 in materials and 5-6hours labour.

This week im goin to be welding a 3" turbo back and getting ready to fire the motor up for the first time.

If all goes well, ill be posting vids of it running next weekend.

These pics give a pretty good idea of the setup.

This should provide some hope for SOHC guys, for the price of an SR installed with a few boltons, you can have a fully built and boosted KA ;)

[Loofee95SE]

looks awesome, if u done all the welding and custom job by ur own hand then MY HAT IS OFF FOR U!! . nice job keep us posted.
What size turbo??? waste gate internal/external??, Engine internals???
C

[mandoz85]

How is the Spark plug clearance with that manifold?

[Toahk]

From the second pic doesn't look like you can get the spark plugs out.

[fogleroller]

nice, keep us updated!

[old_s13]

that looks pretty clean.. props to you man, good luck with the projecto

[deviousKA]

So what do you expect your compression ratio to end up being? Judging by your piston choice (15cc+ dish) you will be way lower than 8:1. Im not spouting my opinion just curious.

Nice work with the sohc bro

[Gladman]

They're 9:1 DOHC pistons. from what i've been told, compression will be just under 8:1

The manifold wasnt completely done in those pics, i spent about 6 hours since porting and cleaning up the welds, deburing etc. I also hacked out the center of the manifold flange to save weight and allow for spark plug removal...

I sprayed the manifold with a high temp 1600 silicon black paint, im gonna bake the manifold tommorrow and post some more pics.

[Zemus]

Very cool motor man, looking great, are you going to start selling the manifolds? Also how much est. did all of this cost?

[mastaflash05]

looking good. are you doing all the work? i like seeing the owners get their hands dirty. anyone can pay a shop.

[Gladman]

yeah i've done most of the work up to this point.

only work performed by shop was machining and assembly of bottom end, i pretty much put the rest of the motor together, installed it etc.

[Maxboost]

Props for the clutch sohc turbo setup. I am glad to see that there are others who have respect for the little ka24e motor. I too am finishing my motor rebuild, with boost. Just a few questions. First, where can you get a fresh sohc block for a good price, second, what kind of metal did you use when construct the turbo mani, and finally, where can you find the hi-temp paint for the mani, and what temp are you baking it at? I look forward to seeing future progress. Let me know what kind of numbers this setup will post.
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"Live each day like it is your last, pray it's not, then drift. Life is too short to drive slow." --"This is my village to terrorize, go find your own!!"

[Gladman]

Baked it at 400f for about 4 hours, i bought it at mopac auto parts.... you dont have that where you are... go to "autozone"

Piping is 3/16 wall weldable fittings, available at any plumbing/gas fitting wholesaler.

I bought my block of the guy that did all the engine work, you might be able to get one from a JDM motor retailer.

[andrave]

ka24E is not a japanese motor.

[Gladman]

What do you think they put in all their little trucks over there?

Ive been to a few JDM importers, they always have RWD KA's

[knghtryde]

KA24E is a Japanese motor. Some people need to research the KA24 alot more. Also the Stock DOHC is not a 9:1 compression it's a 9.6:1. The SOHC on the 1989 KA is 8.5:1 and the 1990 KA is 8.6:1.

And yes the KA24E is a Japanese motor but was originally designed for export to the United States for the 240sx. The KA24E was designed for the 240sx and a year later developed for the 1990 Pickup truck.

The KA24E or DE are not truck engines since they where intended for the 240sx. The main reason that the SR20DE was not used in the 240sx was that they needed a torque engine. Americans where still in the whole muscle car (Torque) motors in the late 80's so they new that a very very low torque engine would not catch the publics eye so they started work on the KA24E, which then later was the basis for the KA24DE.

The KA24E can handle alot more boost stock than the KA24DE because of it's lower compression and stronger pistons.

[knghtryde]

Before anyone Asks. It's the SR20DE not the SR20DET the SR20DET was not used because they did not want to give the N/A 300zx a competition and cut sales to the N/A z32.

If you compare the SR20DE to the KA24E the torque output on the KA24E is alot greater even if it has less HP.

When they decided not to use the SR20DET their next option was the SR20DE.

[fogleroller]

KA24E is a Japanese motor. Some people need to research the KA24 alot more. Also the Stock DOHC is not a 9:1 compression it's a 9.6:1. The SOHC on the 1989 KA is 8.5:1 and the 1990 KA is 8.6:1.


Actually, the early 1989 KA is 9.1:1 and the later 89's and 90's were 8.6:1

http://noclownz.dnsalias.net/s13/sohc.jpg

[old_s13]

ka24E is not a japanese motor.

dont get it twisted with the KA truck motor which was made in mexico my friend.. the s13 motors are made in japan

[Gladman]

Some new pics.... new 3" mandrel bent exhaust.

Managed to pull off the exhaust in 3 bends... beat that. :D

[Nismo240SX]

hmmm... would you be interested in making me a manifold as well???

[Zemus]

How much would you charge for a manifold im interested, seeing as i see you make alot of stuff to sell :-D

[knghtryde]

Actually, the early 1989 KA is 9.1:1 and the later 89's and 90's were 8.6:1

http://noclownz.dnsalias.net/s13/sohc.jpg


You're right, but we never actually got the 9.1:1 compression KA24E. You are right though. The engine was originally designed as a 9.1:1, but as far as I know (I might be wrong) that motor was never actually sold in any of the S13's.

Also, he is right the KA24E for the S13 was produced in Japan, and the Truck motor was built in Mexico. I don't understand why Nissan did that instead of using the same head for both.

I perfer the Truck head because of the manual lifters, but the S13 intake manifold and fuel injection set up is far superior.

My current KA24ET is built with a truck head instead of the S13 head, the manual lifters are modified easier than the hydrolic ones. (From my knowledge. I have 1500 invested in my head.) My block is basically stock, just fully rebuilt and honed. Brand new everything. Ported intake manifold. T25 from an SR20DET and a stock Sidemount. I'm gonna get pictures up as soon as I get my computer at home up and running. (I just moved to a new appartment.) I don't wanna risk getting caught uploading pictures at work.

[Gladman]

hmmm... would you be interested in making me a manifold as well???

Once my kit is done, ill probably start selling them... until then... patience ;)