I258 and ax15 - flywheel - JeepForum.com

 
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post #1 of 13 Old 12-03-2007, 07:39 PM Thread Starter
pazur
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I258 and ax15 - flywheel

Please can someone tell me what flywheel fits with this combination (from CJ 1001, YJ 1004, late YJ 1002 or all of them)? I want to use late wrangler belhousing, and CJ starter. Also, does CJ7 clutch fit ax15, especially are T5 and ax15 clutch bearing diameters the same? And what pilot bearing should I look for to use on ax15 and '81 258?

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post #2 of 13 Old 12-03-2007, 08:02 PM
White92
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It is not a flywheel, you need a flex plate in it's place.

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post #3 of 13 Old 12-03-2007, 08:12 PM
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Actually it IS a flywheel, flexplates are used on automatic transmission applications.
Use the Flywheel and Starter that match the engine. Use the clutch that matches the transmission.
Someone will speak up about the proper pilot bearing.

1985? Jeep CJ-7: 360, 999, D300, LOMAX 4:1, Dana 44s, 4.10's, Aussies front & Detroit rear. S0A, York OBA, YJ tub, 36" IROKs-
1989 YJ Sahara: 258, puko tranny, np231. 2-3" spring and 2" body lift. 33" TSLs- latest project.
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post #4 of 13 Old 12-03-2007, 09:06 PM
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Ops I just learned a new thing. I was thinking that the AX15 was auto.

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post #5 of 13 Old 12-03-2007, 09:07 PM
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Pilot can be had at NAPA, or ordered from AA. If your using the CJ starter use the CJ flywheel, as the spacing on the 2 wheels is different and therefor starts are a tad different, they are the same dimensionally though. THe discs are the same I believe, but I'd replace it myself.

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post #6 of 13 Old 12-04-2007, 01:14 PM
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I would use the cj flywheel/pressure plate with the biggest chevy (or wrangler) clutch disk it will handle. I'm not sure on the jeeps, but a lot of motors use the flywheel to balance the crankshaft. You'll notice a weight welded onto the back of the flywheel. I'm not sure on the pilot bushing, but Advanced adapters will have what you need. You may be able to just call and ask. They are usually really helpful. When you go to assemble it, use a clutch allignment tool for a wrangler.

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post #7 of 13 Old 12-04-2007, 01:35 PM
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258 as well as 4.0 are internally balanced, no weights.

80 CJ5 in the process of a frame up resto
96% complete.
The little stuff will kill me.
On the back burner for college.
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post #8 of 13 Old 12-06-2007, 06:55 AM Thread Starter
pazur
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Thanks, so 258 crank has different diameters for pilot bearings throughout the years? Just wondering if ax15 pilot bearing has different outer diameter than t5/t4/t176 pilot bearings; i.e. if I actually need one (I already got ax15 clutch kit that has also pilot bearing).
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post #9 of 13 Old 12-06-2007, 11:46 AM
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The only pilot difference I know of in the 258 is between CJ and the early YJ that used the 4.2. I'm pretty sure you need a different one, as the crank in 4.0 and 4.2 is different.

80 CJ5 in the process of a frame up resto
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The little stuff will kill me.
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post #10 of 13 Old 12-06-2007, 08:28 PM Thread Starter
pazur
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Quote:
Originally Posted by supraman1990
The only pilot difference I know of in the 258 is between CJ and the early YJ that used the 4.2. I'm pretty sure you need a different one, as the crank in 4.0 and 4.2 is different.
That's what I try to find out, which one I need. In parts store I have to tell the guy year and model. So if ax15 pilot beairng won't fit early 258, will early 258 t5 or t4 or t176 bearing fit ax15?
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post #11 of 13 Old 12-06-2007, 09:01 PM
supraman1990
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I used to have the part number from napa, but I lost it. They have it in stock, but why bother. Just order it from AA, they know what you need.

80 CJ5 in the process of a frame up resto
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The little stuff will kill me.
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post #12 of 13 Old 12-08-2007, 05:08 PM Thread Starter
pazur
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Not sure what is "AA" just found it for $20 with Novak adapters... one for 258 crank and 92-99 ax15 hope it will fit. They did not say about any difference in 258 betwenn YJ and CJ versions
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post #13 of 13 Old 12-08-2007, 09:52 PM
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Their is a diff. AA is advanced adapters.

80 CJ5 in the process of a frame up resto
96% complete.
The little stuff will kill me.
On the back burner for college.
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