Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: JackstandJohnny on April 04, 2010, 10:18:22 PM

Title: 4L pilot bearing
Post by: JackstandJohnny on April 04, 2010, 10:18:22 PM
in the middle of my engine swap.  now, i'm not sure what engine came out of the YJ, but i'm pretty sure its actually a 91 engine/tranny.  the pilot bushing in there is one of these guys https://www.quadratec.com/products/52008_00.htm

picked one up at Canadian tire today but it just wouldn't go.  am i missing something?   the engine came out of fugs 96 XJ.  am i missing something?  the pilot bearing above fits on the transmission just fine, but i can't hammer it into the crank; its a hair to big.  think it was just defective?  (i also have a pilot bearing for a 96XJ but it doesn't fit.)
any ideas are greatly appreciated.

cheers
Title: Re: 4L pilot bearing
Post by: Grease Nipple on April 05, 2010, 12:27:16 PM
Even tried putting the pilot bearing in the freezer and heating up the crank. would not go in.



Title: Re: 4L pilot bearing
Post by: Grease Nipple on April 05, 2010, 12:35:04 PM
I vote for sawsall... just make the hole a little bigger ;)

Maybe some KY?
Title: Re: 4L pilot bearing
Post by: JackstandJohnny on April 05, 2010, 12:40:36 PM
right about now i'm debating parting it out.
Title: Re: 4L pilot bearing
Post by: FiEND on April 05, 2010, 01:30:49 PM
where's the old pilot bearing for the engine?  might be able to swap the little inner bearing with the outer casing.   it's pretty much what I had to do.
Title: Re: 4L pilot bearing
Post by: frenchy on April 05, 2010, 01:33:05 PM
You hitting it with a hammer? or something like a socket over it to keep it straight?

more info...

The 5-speed manual transmission is the light-duty Peugeot BA10/5 in the '87-'89.5 4.0 XJ, the medium duty Aisin-Warner AX15 in the '89.5-'99 4.0 XJ, and the medium-duty New Venture Gear NVG3550 in the '00-'01 4.0 XJ. When carrying out engine swaps (either another 4.0 or a stroker), selection of the correct pilot bearing can be a headache. The details below will make choosing a pilot bearing simple:

'87-'89.5 BA10/5:

OEM pilot bearing 33004041 for '87-'91 4.0 engine
Advance Adapters pilot bushing 716120 for '92-'04 4.0 engine
*Upgrade transmission to AX15 or NVG3550 for stroker engine swap*

'89.5-'91 AX15:

OEM pilot bearing 33004041 for '87-'91 4.0 engine or stroker
Advance Adapters pilot bushing 716120 for '92-'04 4.0 engine

'92-'99 AX15 and NVG3550:

OEM pilot bearing 53009180AB for '87-'91 engine or stroker
OEM pilot bearing 53009180AB or 53009181 for '92-'04 4.0 engine.
Title: Re: 4L pilot bearing
Post by: Sean778 on April 05, 2010, 01:43:35 PM
That's funny, I was just about to post this info.  I found it on Greatlakes4x4.com. It sounds like you need A.A. 716120 bushing, unless I'm mistaken. $23.91 on their website.
Title: Re: 4L pilot bearing
Post by: JackstandJohnny on April 05, 2010, 02:27:31 PM
http://advanceadapters.com/product/2590/(P/N-716120)-Pilot-Bushing-.590-ID-X-1.818-OD.html

that doesnt' look like its gonna work

http://www.jeepsunlimited.com/forums/showthread.php?s=424c4211347c107f92c70ca219cccad0&t=321964&page=2


apparently i'm not the only one with this problem.

i'm about to light my jeep on fire.
Title: Re: 4L pilot bearing
Post by: hps4evr on April 05, 2010, 05:57:33 PM
now that i see the pic i know what you've got. i had this issues long time ago. i took the pilot bearing to a machine shop and they shaved it down a girls-junk-hair thickness. and it fit fine.
Title: Re: 4L pilot bearing
Post by: Gearhead on April 05, 2010, 08:54:15 PM
A couple of years ago I swapped an AX15 from a 98 ?  TJ  into my 88 YJ which happens to have a 258 crank from a 70? something ? CJ and a 93   4.0  block.

A pilot bearing does not exist for the application described above.

What do I do in situations like this ?


I make one , a bushing does the job just fine .

In your  situation , you may be able to buy one , measure the bore in the end of the crank ( if it's still round ) , measure the pilot shaft

Report back with measurements
Title: Re: 4L pilot bearing
Post by: JackstandJohnny on April 05, 2010, 09:21:29 PM
Jeff, Eric

thats the plan......... dropping a bearing off at Jamey's tomorrow to take a hair off. 

thanks all  i'll update when done
Title: Re: 4L pilot bearing
Post by: Bnine on April 06, 2010, 01:29:21 PM
I didnt read all of it, but the pilot bushing changed in 93-94 john. Get the one specific to your year of crank and you will be good.

Nevermind, i see serge nailed it, and the change was 92-93.


Goodluck
Title: Re: 4L pilot bearing
Post by: Sean778 on April 15, 2010, 02:39:06 PM
What's the status of your engine swap buddy?  You never did post an update.
Title: Re: 4L pilot bearing
Post by: hps4evr on April 15, 2010, 06:13:20 PM
yeah! wtf? did that thermostat housing work out for ya? and wheres my new to me housing??? lol!
Title: Re: 4L pilot bearing
Post by: Immortal on April 15, 2010, 09:21:35 PM
Stat housing worked out fine... Tiny is in Cuba for the week.... smoking a big, long, dark......

































cigar. You sick bastards.
Title: Re: 4L pilot bearing
Post by: JackstandJohnny on April 19, 2010, 09:07:18 AM
i'll update it tonight when i get back into the garage.  i was busy 'product testing' rum and cigars in the dominican ;)
Title: 4L pilot bearing/engine swap done!
Post by: JackstandJohnny on April 25, 2010, 08:03:30 PM
well everythings back together now and the jeep is running mint.  i can't get over the power i have back.  i guess when you have all 6 cylinders firing it works well :) 

 i will admit it was a lot of work to which i owe a bunch of people a thankyou for;  big thanks to Jamey for taking the time to make a pilot bearing work for me and just helpful insight. 
thanks to heeps for the tstat and idea for the guage. saved me a lot of headache and work.  tstat works well!  and big thanks to Seanner, Trevor and good ole' Grease Nipple (my neighbour)  and the pook for their help. made it a lot easier (mostly cause i'm lazy ;) ) and thanks Fug for the engine! and even had it pulled before i got there!

can't wait to go wheelin next week. woop woop
Title: Re: 4L pilot bearing
Post by: fug on April 25, 2010, 08:40:49 PM
Thats awesome!  Am so glad it worked out well... I figure you'll get a good many km's out of that engine... it ran like a top before it was pulled.
Title: Re: 4L pilot bearing
Post by: hps4evr on April 26, 2010, 05:31:39 PM
good job duder! go wheeling! i want the empty seat sometime if i can make it. ill bring my camera!