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Unread 07-14-2014, 10:03 AM   #1
Stovall369
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Write-up on Heat soak / over heating mods, Picture heavy

Ok so for the last few years while I was home on R&R from Afghanistan I had some heat soak and overheating issues while wheeling in the Arizona heat and even in the winter months. With the heat at about 112 I was running between 235 and 255 and would just shut off on its own during the summer. Once I fixed the overheating issues I started to run into Heat soak issues shutting off when running 210 and 220.

So after doing some much needed research I started making some modifications to my Girl. I found lots of guys doing some of these modifications but no one doing all them together, so I said WTF lets do it and take lots of pictures.

So first my set up:
2001 Jeep Cherokee Classic 4.0L
Rusty’s 6.5” lift kit
Rubicon D44 front and rear from a Wrangler that came with 4:10’s, and shortly after changed them to 5:13’s
PCS Full Hydro Steering
37” Pitbull Rockets on Beadlock Raceline Revolver rim
AntiRock Sway bar
Hybrid Exo roll cage
40” LED light bar

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Unread 07-14-2014, 10:14 AM   #2
Stovall369
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Here are the modifications ive done to prevent over heating and stop the heat soak...

#1 Hood vents are a must in trying to keep the under the hood temps down, not really thinking it would fix the heat soak / over heating issues but help. So I installed some Hoodlouvers hood vents www.hoodlouvers.com

#2 fix was cooling the radiator down best I could so I took out the Clutch fan and electric fan and replaced it with 3 electric Permacool fans each pulling 2350 CFM's. shop.perma-cool.com/19120-Std-Electric-Fan-10-2350-CFM-19120.htm And the dirtbound fan shroud http://www.overlandoutpost.net/dirtb...de-10-fan.html Figured it was a great start with a combined 7050 CFM's "so they say".

FYI im having to resize all my pictures to make them fit correctly, bar with me..
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Unread 07-14-2014, 10:29 AM   #3
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#3 Radiator Hoses. I had a leak from one of my radiator hoses, so I took the radiator out had it flushed and cleaned then installed a set of HPS Silicone Radiator Hose www.hps-siliconehoses.com

#4 Tranny Temps, with running a hot radiator you get hot Tranny oil so I installed a Tranny cooler and used some Royal Purple Max ATF. Still plan to put a remote tranny filter in down the line and still have to connect it to a dual gauge set up inside the cab. Want to be able to read the temps coming out of the tranny and going back in. Also I originally had it mounted on the drivers side front radiator with a fan and cut the gill to make it fit. But I didnt have long enough hose to get it mounted before my next wheeling trip. So I went ahead and moved it to the center and plan on moving it back to the drivers side and wiring in the fan once my new CNC cut grill comes in from www.AresFab.com. "Picture of what the grills gonna look like below"

#5 wanted to make her breath cold air instead of hot air from under the hood so I got a Thor cowl intake from www.Thor4x4.com to help get the cold air to the motor. "Pictures of the intake to come"
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Unread 07-14-2014, 10:44 AM   #4
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#6 While I was in the prose's of changing my oil I noticed my header was really really close to my oil pan “like touching” So I figured well I want a header anyways so went ahead and got one. Pulled the jeep in the Garage and started taking her apart to do the mods needed to keep her cool.

With my Jeep being lifted and tires being 37's I brought her down to working level by taking off the front tires and putting the axle down to almost the ground. Made it much easier to work on.

Picked up a Rugged Ridge header and was reading that some people said the paint burnt off rather quickly. So I went ahead sanded and painted the header with high temp header spray. I also contacted Rugged Ridge and asked them about using header wrap and they said there headers will handle it and even recommended it. But said if I was going to do it, that I need to make sure its put on tight when wrapped. So I went ahead and wrapped the headers, and the down tubs with 1 and 2 inch header wrap always trying to keep it tight as possible.
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Unread 07-14-2014, 10:50 AM   #5
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#7 I took the oil pan off and cleaned it up, wet sanded it and then spray painted it with Black high temp headers spray then used high temp reflective adhesive tape and put it on the side where the exhaust comes down to “hopefully” reflect heat from the oil. While I had her apart I remembered noticing when I was running hot my oil pressure was low, so after reading about the dreaded 0331 head crack problems I figured I would pull the valve cover off and check it out, Everything was good for now. So I ordered and installed a Melling high flow oil pump from Summit. I also picked up a sexy new valve cover, as well as dual remote oil filter and plan to install soon.
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Unread 07-14-2014, 10:55 AM   #6
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#8 Ordered new Crank, Flywheel sensors, Flywheel sensor cover, also a new Factory heat shield as mine was toast. www.bleepmicro.livejournal.com/57852.html Had a little issue as I was removing the bolts on the flywheel sensor I dropped my socked down inside the bell housing that was missing the cover. I wasn’t really worried because just the week before my buddy Pat and I just did the same thing on his but it was a bolt instead of a socket. To easy just take off the lower bell housing cover and take it out as we did on his. Well needless to say that wasn’t going to work as the socket was to large and wouldn’t make it past the flywheel. Luckly I got on here for advise and was told to try fishing it out the hole it dropped in. Only took me about 10 min and my son and I had it out.
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Unread 07-14-2014, 11:02 AM   #7
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#9 Ordered some 4 hole injectors from www.precisionautoinjectors.com http://precisionautoinjectors.com/co...fuel-injectors Then I wrapped each injector with high temp adhesive tape. I also wrapped the fuel rail with the same tape being I had it left over. “Yeah I know over board with the adhesive tape” I was doing some good drinkin!
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Unread 07-14-2014, 11:12 AM   #8
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So by this time I had everything apart in my garage, not only was I waiting on parts to come in but I was also working on other things like under the hood LED lights, Cab LED lights as well as LED rock lights and finding a place to install my new CB Radio as the old one was a POS. Then I noticed my engine mounts where toast, drivers side was completely broken inside and passenger side was just as bad.

#10 so I ordered a set of Brown Dog Engine mounts http://browndogindustries.com/S2572-...nting-Kit.aspx These things are bad ***, I was very impressed with the quality of there products, and how easy it was to install being that everything on the drivers side was already removed.
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Unread 07-14-2014, 11:15 AM   #9
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Brown DOG...
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Unread 07-14-2014, 11:22 AM   #10
chris87xj
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Nice job with this XJ, I hope to see it entered in a Cherokee Of The Month contest one of these months.
Great write-up here thanks!
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Unread 07-14-2014, 11:22 AM   #11
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Then once again I was just waiting on parts. So back to finding a good place for the CB to go. Then I decided to take the passenger side air bag out "Its never gonna be used because its already disconnected" This was gonna be perfect with a few minor cuts.
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Unread 07-14-2014, 11:25 AM   #12
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Quote:
Originally Posted by chris87xj View Post
Nice job with this XJ, I hope to see it entered in a Cherokee Of The Month contest one of these months.
Great write-up here thanks!
Hey Thanks man, Yeah that would be awesome...

More Write up to coming, having to resize all these pictures takes time.
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Unread 07-14-2014, 11:29 AM   #13
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oops sorry about slipping a post in while you were still working. Once you get done let me know and I'll go back and remove the discussion posts inbetween the write-up posts.
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Unread 07-14-2014, 11:39 AM   #14
Stovall369
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So by this time I installed the Brown Dog Mounts and started getting parts in and I found a picture of a guy who put high temp adhesive reflective tape on the bottom of the intake to help intake temps "Heat soak".

#11 So I figured why not go ahead and take it one step further and use the left over hight temp header spray on the bottom of the intake then use the adhesive tape over it. Cleaned it like it was brand new and went to work on it. Turned out great I think…
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Unread 07-14-2014, 11:40 AM   #15
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Quote:
Originally Posted by chris87xj View Post
oops sorry about slipping a post in while you were still working. Once you get done let me know and I'll go back and remove the discussion posts inbetween the write-up posts.
Its all good man, dont sweat it.
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