Auto KA24DE's don't have throw-out bearings?

Information on the naturally-aspirated KA24E and KA24DE engines.
mr_wizard
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I got a ka24de from an 97 auto 240sx donor car and I was installing my clutch today over my flywheel and noticed it doesn't have a throw-out bearing? Anyway I used the one that was included with the clutch and pounded it in with a rubber mallet. Once I got that in, I put the clutch and cover plate on and went to align it with the alignment tool and the tool won't go in the throw out bearing. Am I doing something wrong here? I had to take the clutch back off and see if the tool would go in and it wouldn't. If I hadn't put the throw out bearing in it would have fit. Here's a picture. What do you guys think? I can't get it aligned without being able to put the alignment tool through.


mr_wizard
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Another

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Tulsa_S-13
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Joined: Sun Jun 19, 2005 2:14 pm
Car: 1991 SR 240sx

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Auto KA's have a A/T adapter bushing inside the crank (its the metal ring that sticks out about 1/4 inch). Your going to have to take off that flywheel and tap the thing out. I used an airchisel because it was a ***** to take out of the crankshaft.

Thats the reason that the alignment tool won't go in and why if you had tried to put that in your car it was have never worked at all.

Oh and that little brass bushing that you tap in the crank is called a pilot bushing not throw-out bearing. The throw out bearing is the bearing that pushes against the pressure plate to release the clutch.

mr_wizard
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DAMNIT. Well what the hell. The alignment tool won't go in the throw out bearing so either way taking that out wouldn't help...? It's about 2 inch's wide I don't see why that ring your talking about would effect anything? If were thinking about the same one.

By the way, that's the motor I'm working on in the picture.

TheOne
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Joined: Mon Aug 09, 2004 4:28 pm
Car: 93 240sx FB
Location: Arlington, TX

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the throw out bearing is the 1 that you put on the manual transmission shaft, auto's don't have a throw out bearing.

what he was sayin is the pilot bearing thats in the crank where the auto trans input shaft goes, there's a metal ring that you have to take off so that you can use your alignment tool.

btw...strange, i had an auto ka put in with a manual trans and the clutch alignment tool worked just fine.

mr_wizard
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Doh, I meant the pilot bearing. Like I said though, that's what's preventing the tool from going in, not anything else.

mr_wizard
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So does that picture look like I did it right?

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Ligouri Rd
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Car: '96 Nissan 240SX

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You have the manual pilot bushing pressed in behind the automatic pilot bushing. On my '97 Ka the auto pilot bushing was pressed way into the crank shaft. First you need to get the manual bushing out then do what you have to get the auto one out, cut along the side, air hammer whatever. The manual pilot bushing should press all the way in there and then the clutch alignment tool will fit.

mr_wizard
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The whole purpose of the pilot bushing is to provide a wear point for the transmission shaft. So, if the alignment tool is acting as the shaft, and doesn't penetrate the pilot bushing, then I think they possibly got the wrong tool. I'm going to test fit the transmission, if that fits that should be ok I would think. I have a friend with a more universal alignment tool that I should be able to use.

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Ligouri Rd
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Car: '96 Nissan 240SX

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Does the alignment tool not penetrate the pilot bushing at all or just not enough? It is possible that you collapsed the manual pilot bushing and that is preventing it from going in. Regardless you need to pull both bushings out, press the manual bushing, or when you try to put the transmission on it's input shaft will not go all the way in.

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KFL
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1-you can just measure the alignment tool/and shaft of trans. If you try phsyically mounting it with trans it may go in,,or not..chance of the bushing cracking.

2-don't use AT bolts buy used/new MT bolts they are longer also use some loctite on them.

3-if the alignment tool doesn't even go into the pilot bushing, then it may have been compressed when you tapped it in. You would have noticed it not going smoothly if you installed the pilot bushing ontop of the auto collar.

mr_wizard
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UGH, the transmission won't fit in the pilot bearing / bushing. I just looked at my old motor and it didn't even have one. WTF!?!? I'm thinking about just taking it out and not even using it. The thing is, I see nothing I need to pull out. And I know it isn't the thing the pilot bushing / bearing is sitting in now because it's on my old motor too, so even if I were to pull it out there would be too much play for the pilot bushing / bearing and it would just fall out. And if there's something BEHIND the pilot bearing / bushing then that shouldn't matter because the input shaft won't get in the pilot bushing / bearing anyway. And it's SUPPOSE to be able to go in there. So what I'm thinking is just take it out and not use one?

Here is my old motor which was using the manual transmission.

Modified by mr_wizard at 12:09 PM 4/19/2006
Modified by mr_wizard at 12:10 PM 4/19/2006

mr_wizard
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Another pic of old motor. I took the flywheel and clutch off to use the flywheel bolts.

mr_wizard
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Joined: Tue Nov 01, 2005 7:29 am

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Hmmm well, after much force I somehow managed to get the transmission in. I took it back out to be sure I didn't mash something but I can get it in pretty easy now by squeezing the lip of the bell housing and engine together while sort of pushing from behind. Woohoo, that nightmare is over. What next!?!?

Oh wait, nevermind, I punctured the oil pan. Now, where to get an oil pan....


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