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post #1 of 5 Old 06-29-2020, 05:44 PM Thread Starter
logan1813
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1980 CJ7 
 
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pilot bearing

does anyone know the difference between the 4.2 and the 4.0l pilot bearing. Thank you

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post #2 of 5 Old 06-30-2020, 09:18 PM
87MJTim
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I think it depends on the transmission you are planning on using: T5, BA10/5, or an AX15.

The input shaft tip of the trans will have different diameters. The BA10 and early AX15s have a .59" diameter tip. Later AX15s have a .75" tip. So, the inside diameter is determined by the transmission.

The OD of the bearing will depend on the year of the engine. Different years engines came with different size cranks openings.

Give us more info and get your sizes measured: which trans, which engine and year of the engine, and the OD and ID for the bearing

Tim

87 Comanche, 4.0, AX15 (formerly BA10/5), D44
84 CJ7, 4.0 (93 XJ) AX15 (Formerly T5)
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post #3 of 5 Old 07-02-2020, 09:17 AM Thread Starter
logan1813
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I will get the information over. All I know right now is that we are putting a 97' Jeep Grand Cherokee 4.0 motor in and a 4 speed
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post #4 of 5 Old 07-02-2020, 11:19 AM
87MJTim
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A 4.0 with a 4 spd would have an AW4. That is an automatic trans. My info above may not apply. The trans I listed are all manuals.

Tim

87 Comanche, 4.0, AX15 (formerly BA10/5), D44
84 CJ7, 4.0 (93 XJ) AX15 (Formerly T5)
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post #5 of 5 Old 07-03-2020, 10:18 AM Thread Starter
logan1813
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the original motor what the inline 6 4.2 amc motor. That one blew so now we are putting the 4.0 in. The tranny I have that is with the 4.2 is ford RF-D5ZR-7006-BA.
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