Not quite so Jiffy Radiator Replacement and Cooler Install

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Alibi
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Not quite so Jiffy Radiator Replacement and Cooler Install

Post by Alibi »

Recently I discovered a leak in my radiator near the cap so I decided it was time to fix the problem. At first I thought that I could just patch the leak and leave it be but after thinking about it I figured I'd be much better off to go ahead and replace it with proper parts. While I was at it, I figured that I should go ahead and add a transmission cooler.

Here is the old radiator and where it leaks.
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So... I ordered a bunch of new parts from http://www.rockauto.com and used a %5 discount code I found online.

-$107 : Radiator
-$20: Gates upper and lower hoses
-$6: Stant thermostat (I didn't have time to install this but I'll do it sometime this week)

And I ordered the cooler from Summit. Its a B&M Supercooler :D Summit sent me a new hat too :P

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Heres my new radiator. In the picture I'm fabbing up how I'm going to run the new cooler lines using supplied brass fittings from both the radiator and the cooler kit. These fittings are invaluable for my install.

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Next, I yanked my old radiator, hoses, and my lower trans cooler line. Both of my lines were bent up very badly from a wreck from the donor car and the motor swap. The lower line was bent up bad enough that I couldn't straighten it so I decided to just outright replace it with new hose (3 feet from Autozone and using one of the brass fittings in the radiator kit). The old radiator isn't even correct for the car. The PO said that the original sprung a leak and whoever replaced it for him just slapped in this radiator. Its HUGE, heavy, and made of copper... which means its worth some good coin at the junkers :D

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And heres pictures of the radiator in place with lines hooked up. Sorry I didn't take any pictures of the install itself but I was running out of daylight to finish the job :( The second picture shows my new rubber line that replaced the lower metal trans cooler line. I think it was February, but the original rubber flex section of the line broke and leaked so I cut it off and replaced it then. This time, I just used rubber for the entire length of the line and tightened it all down.

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As for the trans cooler, I ran the hoses from the top fitting on the radiator. I used the supplied brass fittings and ran one line into the front of the car.

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Next came the task of figuring out how to mount the cooler in front of the radiator but use stock bolt locations. It was actually easier than I thought. I used the two bolts from the AC condenser mount (8mm) to hold two strap metal mounts. These mounts were bent so that they would hold the cooler away from the condenser and then bolted to the upper left and lower left mounting holes on the cooler. The cooler was still too loose so I used a third strap and bolted it to the stock location for the oil (?) cooler line that goes in front of the radiator (10mm). It works like a charm and holds the cooler very steady.

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Now that it was strapped in place it was time to hook up the cooler lines. One line from the barb fitting off the cooler went onto the lower barb on the cooler and was clamped down. Next, I ran the rest of the line from the lower fitting to my upper metal trans cooler line from my radiator. The top 6 inches were mangled pretty bad so I just it off and slid my hose over the naked line. I wish I had a flare tool but I dont' so I ended up slipping 3-4 inches of the hose over the metal line and then used 3 hose clamps to keep it from sliding or leaking fluid.

At this point everything was together. I went over all my hose clamps and tightened them all down and started to fill up the radiator. I turned over the motor and I had no leaks from the radiator but I had a leak in my cooler line from the B&M cooler to my metal trans line. Originally, I only had 2 clamps but I added the third and then tightened the other two down much more. No more leaks. I went for a test drive and its all working fine as of now.

Total time was about 4 hours, so not too horrible.
-Eric
"Energy and Persistence Conquer all Things" --Benjamin Franklin
-1989 Buick LeSabre T Type: 220k miles
-1987 Fiero GT: 224k miles
-2012 Honda Civic (boring, but its a good DD)
Le91Bonnie
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Re: Not quite so Jiffy Radiator Replacement and Cooler Insta

Post by Le91Bonnie »

Ok, I ordered a new radiator from Rockauto .com, everything matches up EXCEPT the Tranny cooler lines, the openings on the new radiator are too *dang* small for the original lines to attach to. Do they make an adapter? My lines are in good shape, so i dont want to replace them, please advise. My care is a 1991 Bonneville LE with NO oil cooler.
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Re: Not quite so Jiffy Radiator Replacement and Cooler Insta

Post by Jrs3800 »

Holy old thread bat man...lol... when you see a thread that old please start a new one...

Most of the time the replacement radiators will come with a set of fittings to adapt the larger fittings to the smaller ports on the radiator.. I will guess that your radiator did not have these?

If not you may be able to find the proper fittings at a hardware store... I know I have done this before... I forget what size it was tho... I think I had the threaded end 5/16 and the larger end 3/8...

Let someone else answer this first tho... as I am not sure on the sizes....
Le91Bonnie
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Re: Not quite so Jiffy Radiator Replacement and Cooler Insta

Post by Le91Bonnie »

Ya, it didnt come with ANY fittings or instructions...and sorry about the old thread revive.....Next time ill start a new one. Thanks for the info too!!
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