CF Veteran
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Attachment 288417
How did you plumb it? Before or after the radiator?Originally Posted by NewKindOfClown
Looking good. I just recently installed a trans/PS combo cooler in my YJ, but I haven't really tested it on the road yet. I know it doesn't leak!Attachment 288417
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Don't use that word this year
Up to 2 million per square acre this year.Originally Posted by NewKindOfClown
Noooooo!!!!Don't use that word this year
Moderator of Jeeps
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Trans -> Rad -> Aux -> TransOriginally Posted by a_shirey
How did you plumb it? Before or after the radiator?
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RSWiser
They aren't always terrible. All of my and my families' cars have always one rubber plug in them. OK they are really block heaters, but basically a rubber core plug with a heating element sticking through it. Can only think of two that had to be replaced. One in the family car when I was growing up started leaking. The leak ended up being a hole in the heating element itself. The second one was in my mom's car a couple of years ago. That one was a heating element that internally shorted. 14 years old and it hadn't leaked.Originally Posted by RSWiser
I did this project about a month ago. I also had the leaking rubber plug. Must be common knowledge with some mechanics that this is a quick easy way to replace the freeze plugs.RSWiser
CF Veteran
started going thru the 5.3 harness today, got the pcm connectors de-pinned, and all my external connections labeled, i will build the fuse block next

all the stuff that i yanked off: stock gm fuse block, all lighting harness(not sure why it was left on there but ill need the extra wire anyways) still need to clean the rest of the harness out

also test fit the 231j/c to the 4l60e and it all fits, its not bolted up since the nuts are all still holding the 231 to the aw4 still currently in the jeep


all the stuff that i yanked off: stock gm fuse block, all lighting harness(not sure why it was left on there but ill need the extra wire anyways) still need to clean the rest of the harness out

also test fit the 231j/c to the 4l60e and it all fits, its not bolted up since the nuts are all still holding the 231 to the aw4 still currently in the jeep

Oil changed. Rotella T6 and 7 inch wix filter. Gonna drop the tranny pan and replace the filter, replace the gasket and refill what fluid is left later this week. Cleaning the air filter out now. Gonna clean the IAC too. Idle is a bit high for me. When I hit the tranny I'm gonna do both diffs and the transfer case. Need to pick up a couple gallons of dex/merc for all those fluid changes. Also found a frayed throttle valve cord so ill probably pick up one at the JY to replace while i have the pan dropped
Beach Bum
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Here in the Carolina sand dunes I plumed it different. Trans, Aux, Rad, Trans. Also ran it without the stock heat exchanger for over a year, noticed a more stable coolant temp in tough conditions.Originally Posted by NewKindOfClown
Trans -> Rad -> Aux -> Trans
Beach Bum
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Do you always replace the double cardon center bearing when rebuilding? The complete rebuild kit seems to be around $95.Originally Posted by ehall
Rebuilt a couple of driveshafts
Member
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Mine was not a block heater. When I removed it all I had was a rubber plumbers plug.Originally Posted by Bluelight
They aren't always terrible. All of my and my families' cars have always one rubber plug in them. OK they are really block heaters, but basically a rubber core plug with a heating element sticking through it. Can only think of two that had to be replaced. One in the family car when I was growing up started leaking. The leak ended up being a hole in the heating element itself. The second one was in my mom's car a couple of years ago. That one was a heating element that internally shorted. 14 years old and it hadn't leaked.
RSWiser
CF Veteran
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I have heard of doing it both ways, but can't decide which way to do it. Originally Posted by SteveMongr
Here in the Carolina sand dunes I plumed it different. Trans, Aux, Rad, Trans. Also ran it without the stock heat exchanger for over a year, noticed a more stable coolant temp in tough conditions.
Ive heard of doing it before the radiator so the fluid gets back into the radiator to warm up a bit especially in cold temps. But Ive also heard to do it after the radiator to pull as much heat out of the fluid as possible.
Some also say it doesnt matter how cold the fluid it is, it just cant be too hot. I don't necessarily agree with that though.
Moderator of Jeeps
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Ive heard of doing it before the radiator so the fluid gets back into the radiator to warm up a bit especially in cold temps. But Ive also heard to do it after the radiator to pull as much heat out of the fluid as possible.
Some also say it doesnt matter how cold the fluid it is, it just cant be too hot. I don't necessarily agree with that though.
I plumbed it the way every manufacturer I talked to recommended itOriginally Posted by a_shirey
I have heard of doing it both ways, but can't decide which way to do it. Ive heard of doing it before the radiator so the fluid gets back into the radiator to warm up a bit especially in cold temps. But Ive also heard to do it after the radiator to pull as much heat out of the fluid as possible.
Some also say it doesnt matter how cold the fluid it is, it just cant be too hot. I don't necessarily agree with that though.
CF Veteran
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Ive heard of doing it before the radiator so the fluid gets back into the radiator to warm up a bit especially in cold temps. But Ive also heard to do it after the radiator to pull as much heat out of the fluid as possible.
Some also say it doesnt matter how cold the fluid it is, it just cant be too hot. I don't necessarily agree with that though.
Originally Posted by a_shirey
I have heard of doing it both ways, but can't decide which way to do it. Ive heard of doing it before the radiator so the fluid gets back into the radiator to warm up a bit especially in cold temps. But Ive also heard to do it after the radiator to pull as much heat out of the fluid as possible.
Some also say it doesnt matter how cold the fluid it is, it just cant be too hot. I don't necessarily agree with that though.
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If you get a low pressure drop cooler it'll let thicker fluid bypass the aux cooler until it gets warmer. That way it can get up to temp somewhat. Once the viscosity lowers it'll pass through all the plates and get cooled better. It's probably only an issue in below freezing areas. I'm still debating which side to put mine on(mech fan or aux fan) as 2 winters ago we had a week of high temps @-40F. The 4cyl Jeep never got up to normal coolant temps. I didn't have this XJ yet but I assume the 4.0L might get up to temp.Originally Posted by NewKindOfClown
I plumbed it the way every manufacturer I talked to recommended it






