Ka24e head problems

Information on the naturally-aspirated KA24E and KA24DE engines.
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cmoody2006
Posts: 2061
Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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Heres the situation I overheated my motor in my 240 and blew the head gasket I warped the head in the process.

I went to my local junkyard and they have a nissan hard body truck that has the ka24e motor in it. I pulled the starter off of it a while back to see if it would fit my 240 when mine went out. It didn't work the starter was 2 big for my motor. I don't know if that gives you guy's any info or not but i was wondering if the head is exactly the same and if i could use it or not. The valve cover looks exaclty the same. They both have 12 valves. The intake manifold looks to have the same bolt holes and so does the exhaust. They want 75 bucks for the head if i take it off. What should I do? I currently have my head at the machine shop and he is going to mill it down and see if we can't use a head gasket "shim" is what i think he said. Should I wait and see what happens with my original head or try taking this head off the truck???


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cmoody2006
Posts: 2061
Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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Bump anyone know anything about this?

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cmoody2006
Posts: 2061
Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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You have got to be kidding me no one has even looked that this

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cmoody2006
Posts: 2061
Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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bump anyone up at 4 in the morning my time

dropteam21
Posts: 42
Joined: Thu Oct 04, 2007 6:42 pm
Car: 1990 240sx SOHC

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what is the price to get it dun in the shop. I wud take off the valve cover and see what that one looks like and then take the head off if it looks good. For all you know the one off the hard body might be messed up to. hope this helped.

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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the one on the hardbody works i heard it run before i robbed it of the starter

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quinteros05
Posts: 116
Joined: Mon Mar 26, 2007 1:43 pm
Car: 89 240sx hatch

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im not sure if it will fit, but even if you use it u should take it to the machine shop so they can inspect it and straighten it out and all that stuff. I suggest just fixing the one you have, i took mine to the machine shop and they charged me 100 dollars to straighten it out, adjust the valves and all that good stuff, plus 10 dollars for any bent valve. As far as the head gasket, just get a new one it would be better.

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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I warped my head beyond belief! the machine shop said they will try to mill it down but i would have to use what they call a head gasket spacer. So I guess we'll see

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quinteros05
Posts: 116
Joined: Mon Mar 26, 2007 1:43 pm
Car: 89 240sx hatch

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oh wow... well i guess if the head is a perfect match then go for it... but dont just go by how the valve cover looks... the old nissan stanza have a ka24e with the same looking valve cover and stuff but its horizontal and wont fit the 240sx block...

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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Thats what I'm worried about with the truck motor Anyone know if there the same or not?

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quinteros05
Posts: 116
Joined: Mon Mar 26, 2007 1:43 pm
Car: 89 240sx hatch

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it should b easy to tell, do u have a picture of the ka in the truck??

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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No but I think I can go back down to the junkyard and take a pic tomorrow if it doesn't snow

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quinteros05
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Joined: Mon Mar 26, 2007 1:43 pm
Car: 89 240sx hatch

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what kind of truck was it??

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quinteros05
Posts: 116
Joined: Mon Mar 26, 2007 1:43 pm
Car: 89 240sx hatch

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ere is a pic i found... looks like the 240sx ka....

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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It was the nissan hard body truck and that pic is what the motor looks like in it but its carb'd not fuel injected

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anthony4x4
Posts: 39
Joined: Thu Nov 03, 2005 9:36 pm
Car: 1995 nissan hardbody

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the motors are the same my buddy has one the head will work on a 240sx also the d21 trucks never were ka24e carbed its actually injected its just the intake manny is a little different

WWJD

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the only thing truck KA have different are Cam and block and intake manie.Use your 240 cam in the truck head. and make sure your block isn't warped aswell or your waisting your time.

One more thing it's gonna be cheaper if you get another motor. by the time your done with labor and parts it wont be worth it

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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Well the machine shop was able to fix me up with my old head they milled it down and we put a head gasket spacer on it but.... I'm a moron! As I was putting it back together i didn't realize until i went to start it that i forgot to torque the cam bolt down and it sheared the pin off of the cam. So the cam on the truck won't work for my 240 then?

silpena
Posts: 1052
Joined: Fri Nov 25, 2005 9:55 pm
Car: Nis1993 san 240sx super hicas(wrecked)
soon to come to s-chasis
Location: live oak,ca, 95953

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how was much was the was head needed to be milled down to straighten it out? A shop told me the same thing with my ka24de head i warped it and they tried to sell those spacers but i still used and it runs perfectly. I just had to cut the head gasket under the front timing chain chain cover becuase i didn;t want to lose time trying to get cover matched with the head, which would be hard. Compression would be raise a little but thats good.

180weaver
Posts: 95
Joined: Mon Jan 15, 2007 4:25 pm
Car: 90 240sx

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I would just have the sprocket welded to the cam. You will probably never purchase the adjustable sprocket for that engine without upgrading the cam so save some money and time and weld the sprocket on and then torque the bolt. No worriesAloha

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shpaintball
Posts: 801
Joined: Thu Jul 20, 2006 11:15 am
Car: 90' SOHC 240sx RIP, 92 DOHC KA project STOLEN 87 FC RX-7 TURBO ...93 KA died...89 SR20 DD..08 Titan new toy

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look around a little more you can probably find one from a 240...for the same price or less on here however yea the head from the truck will work but its cam'd different and the car will drive different

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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update....

I went and traded off my amp and speaker box for another ka24e motor. I tore it all down tonight and i'm gonna post pics in another thread tomorrow when I upload them its 4 in the morning and i'm tired as f#@#% so now i'm going to check the rest of my recent topics and i'm going to bed. Btw got the cam installed and i'll post pics of how bad I F#$&* up my old cam and it compared to the new one.

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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Well I can't find that picture just yet but i'll post it later. Here is my new problem..........

I have everything put back together the right way. I had the head milled down and it doesn't have any cracks in it. I'm using a head gasket spacer and a headgasket along with APR stud's. I fill the radiator full for antifreeze and fire it up... Runs good... Except for the fact that it smokes like a freight train! I have tonz of white smoke coming out the exhaust. WTF could it be now? Is my block messed up or what? How the he!! do i fix it now? And how much is it going to cost anyone know?

silpena
Posts: 1052
Joined: Fri Nov 25, 2005 9:55 pm
Car: Nis1993 san 240sx super hicas(wrecked)
soon to come to s-chasis
Location: live oak,ca, 95953

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maybe its just burning any remaining anti freezr from before. Stuff could be left and take awhile ot burn off.

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cmoody2006
Posts: 2061
Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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I ran the car for a good 20 mins and it still smokes just as bad

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cmoody2006
Posts: 2061
Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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anyone got any ideas? A guy across the street said i may have cracked a water jacket in the block causing coolant to mix with the oil and it could have caused my piston rings to go bad and burn the oil/coolan mixture Can this happen?

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cmoody2006
Posts: 2061
Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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Bump Someone has to know something i can do

silpena
Posts: 1052
Joined: Fri Nov 25, 2005 9:55 pm
Car: Nis1993 san 240sx super hicas(wrecked)
soon to come to s-chasis
Location: live oak,ca, 95953

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I don't the water jacket cracked. I've never hear of a water jacket crazking on a ka. It could be too much coolant got into ur piston rings screwing them up. i remember when i change my head gasket after warping the head. # 3 clyinder was hella clean.... idk but it was teh coolant doing that. I say drive it around and if doesn;t over heat then go with it. You sure its not the cold wheather around the year making it look like ur car is smoking like hell? My car looks like its crazy around this year. I don't think you needed that spacer. I just milled the head down and cut the front timing cover portion of the head gasket and used rtv. You can observe your coolant flow by uncapping ur radiator cap and reving the engin at a constant 2-3 k and see if any bubbles or oily residue passes through. Oil=bad, bubbles= bad/ pressure from the combustion chambers.

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cmoody2006
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Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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well here's what happens... I fill the radiator up all the way and let it run for a good 5 mins... I shut it down and opened the radiator and it was low again.... What you think? Plus its like 45-50 outside right now

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cmoody2006
Posts: 2061
Joined: Wed Jan 31, 2007 7:13 pm
Car: 1993 Nissan 240sx vert

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How far down did you have your head milled? I know I had to have a lot taken off i'll go back down to the shop and find out how much it was.


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