PDA

View Full Version : 1990 4.2L complete



JeepsterJayson
02-17-2003, 10:54 PM
I have a 1990 Yj 4.2 L bored .060 with 24k miles on rebuild. It comes with accell 8.8mm wires, MSD coil, flow kooler water pump, comp RV cam, a/c compresser, alternator, all brackets, carb, intake, all except fan, exahaust manafold. I have borla headers as well. I am asking $550 for engine and $200 for headers with engine only. I will not sale headers till engine is gone. I also have a TF999 auto with a bad second gear. Asking $50 for it. Replaced engine after 2 years because i build a chevy 350 and 700R4 and finally got the money after the trans wentout. email jaysonrutherford@neo.tamu.edu with questions. Or call 512-869-9719 cell after 8:00 please.:o

eight
02-17-2003, 11:02 PM
What's wrong with second gear in the auto? Just slipping or something worse? Are all the accessories there like the flex plate, torque converter, etc., everything needed to hook it up to a jeep with a 258 and manual transmission?

JeepsterJayson
02-17-2003, 11:07 PM
actually the input shafts between the auto and the manual and the transfer cases are different but yes dip stick torque converter flex plate and pan no shifter for transfer case though i also have the braket for the engine modified for the borla's and most of the linkage but actually any floor shifter that works a torque flight will work the same

JeepsterJayson
02-17-2003, 11:10 PM
opps and the trans started shifting after one of my auto tech friends helped me adjust the bands and after that second gear went all the way out and doesn't grip at all might be a worn band or possibly a broken band, but you will have to have an auto transfer case with the same tooth count 87'-95 auto i believe TF904 have same tooth count

eight
02-17-2003, 11:48 PM
Can you count the output splines? I thought all tf autos had 23 splines. Correct for a dana 300 case. Maybe in 1990 the manuals used the 21 spline output. I should have mentioned I'd be putting it in a cj.

JeepsterJayson
02-18-2003, 12:08 AM
i am at college station and the engine and trans is at my house in Georgetown. when i go home this weekend i will check. but i think it is 23 spline. i will check some forums and let you know

robertf03
02-18-2003, 12:21 AM
if it was behind a 90 4.2 from the factory its 23 spline but you'll need a spacer or thick rotating ring because the shaft is too long

J Cooper
02-18-2003, 11:13 AM
my two cents don't know if its worth a ****, but i have a tf904 with the dana 300 and it was bolted to a 85 4.2 and also bolted right up to the 304, and i know a 727 or 999 is the same.

JeepsterJayson
02-18-2003, 03:02 PM
I am not sure if you need a spacer or not. When i converted the 700r4 to my np231 i used an adapter and i do remeber it saying that an auto has a longer shaft than the manual. I was told if I had space left between the two that to shorted the input shaft is not a big deal. luckly for me the adapter bolted up with no problems. can't say the same about loocating to line up with the axle

BMFScout
02-19-2003, 01:54 AM
Originally posted by robertf03
if it was behind a 90 4.2 from the factory its 23 spline but you'll need a spacer or thick rotating ring because the shaft is too long

THE GREAT FLEM HAS SPOKEN, IT SHALL BE SO!!! MORE THAN LIKELY YOU ARE WRONG!

JeepsterJayson
02-19-2003, 10:31 AM
when i go home this weekend i will count the splines and try to use my dads digital camera and post some pics. I have some pics of the engine swap and i will bring those to the meeting tonight.

JeepsterJayson
02-22-2003, 08:38 PM
I checked and it is a 23 spline it is 1/4 in inside the flange. You can shorten the shaft like i said if you can't get it to bolt up to your Transfercase. Is their anyone that might want to buy the engine?

GARNER
02-23-2003, 08:07 PM
Im getting this motor so the YJ will run again.

viva blackbird


garner '99

BigRedFord04
02-23-2003, 08:53 PM
sweet! congrat ol' fart :flipoff2:

BigRedFord04
02-24-2003, 01:18 AM
J&P is the only transmission shop in this area worth anything....once again...."SEARCH"!!! :flipoff2:

BigRedFord04
02-24-2003, 02:48 AM
forgot to metion that they specialize in manuals....the full name is "J&P Standard Transmission"...i dont do autos so i couldnt tell you on that one. in any case, their # is 979.778.0378

J Cooper
02-24-2003, 12:51 PM
the 904 came with the 6 and works with the 8... thats what i have, go get a 999 or 727 out of some old dodge or crysler car, thats what all those chargers and and such ran, and just put a different tail shaft of it. i found one in CC behind a dumpster at a trans place for like $50 but i was alreading getting the 904 rebuilt so didnt get it.

robertf03
02-24-2003, 01:10 PM
chrysler tranny wont bolt up, different bolt pattern
if you want a 727 that'll bolt up its gotta be from an AMC car or wagoneer.

it should be a 999 if it was behind a v8 or 6, or a 904 if it was behind a 4 cyl. the aw4 was never in wranglers or cj's

J Cooper
02-24-2003, 06:59 PM
O K

JeepsterJayson
02-26-2003, 03:43 PM
that is correct. the tf999 was behind I6 from 87 through 95 and the 904 was behind the I4. It is a tf999 from a 90 wrangler that had a 4.2L I6.

J Cooper
02-26-2003, 04:03 PM
thats cool, i was just saying my 85 came with the I6 and 904 and is now on my 304

StevenAg03
02-26-2003, 06:20 PM
the auto in my 82 is a tf999

J Cooper
02-26-2003, 06:26 PM
would anybody like to stop by and check to see what transmition i have... i thought i had a 904 and so did the guy that rebuilt it a year ago... maybe we were both wrong... i would much rather have a 999.

J Cooper
02-26-2003, 06:28 PM
... its also a laredo model, does that make a difference in the transmittion used?

robertf03
02-26-2003, 06:52 PM
its gotta be a 999. the 904 has the 4 cyl bolt pattern.

I'll bet most of the parts are interchangable

J Cooper
02-26-2003, 07:04 PM
hmm, well how do i know for sure, is there a tag on it or a way that it looks ?

JeepsterJayson
02-28-2003, 03:34 PM
Sometimes there is a serial number that is by the oil pan on the housing on the back passenger side. I beleive thats where it is located. If not it should be around there somewhere by the oil pan, that is where i have seen most.