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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-12-2005, 05:54 PM   #31
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Originally Posted by opensourceguy
I know this sounds stupid, but DO NOT FORGET TO FLUSH THE TRANSMISSION COOLER and ACCOMPANYING COOLER LINES. Betcha any money that was what was the demise of your current trans at such low miles.

Also I wish you luck in your rebuild quest, because I think I may need something like that on mine too . Maybe you can post the final cost [if you don't mind admitting to the hurrendous cost it will end out being].
Yeah, the rebuilder is going to flush everything. I will talk to the guy tomorrow to find out what kind of fluid he'll be putting in as well. I'll know the final price tomorrow and I'll post the results of the raping that I will take.

I wouldn't be surprised if the shop that installed this transmission 75k miles ago didn't flush the cooler and the lines. As it was, they forgot to tighten one engine cradle bolt (it popped out in front of the house) and they bent one of the cooler lines and it wore through on the bracket that it ran through. That should have been a dead giveaway to the quality of their work.
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Old 09-13-2005, 11:57 AM   #32
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Originally Posted by Andrew97Cobra
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What tranny cooler are you running on yours? Was it a PITA to install?
It was a bit of a PITA...

I believe this is an Imperial... I think its made by the same company that makes the Hayden cooler... But if you look close I have no room between the cooler at the front support... I actually had to remove that support to squeeze the cooler in there...

You can almost see the cooler through the grille... I had more cuts than I knew what to do with... This is an oversized cooler... I bought a large cooler simply because I am in florida and it gets too hot done here..... I think this cooler is 24000 lbs + 3000 or 4000 I think... On my 95 I have a heavy duty RV cooler + 7000 Lbs.... I know the cooler on my 91 is just a bit smaller than the one I put on my 95, but not by very much...

I also purchased the correct lines so I could run the cooler simmilar to the factory set up.. Saved me time... Yes It was a bit of a PITA... I feel sorry for the 2000 + guys
Do you have the dimensions of that cooler? Also, what do you mean by correct lines? I found some Imperial coolers online and it says on all of them that a fitting kit is not required.

Make sure you PM me, because I will forget... Just throw me a reminder and I'll get you some pics and dig up some part numbers... And I'll go out and measure the tranny cooler... Would you like to see the coolers for both the 91 and 95? Both use the same lines...

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Old 09-13-2005, 12:10 PM   #33
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I'll send you a PM. Thanks in advance. I also found a B&M cooler at Jegs for about $45, but not having the car at my disposal, I can't measure for anything. Any more pics of the setup on your '91 will be great. I'm definitely interested in seeing the lines. What did you plug up the fittings on the factory cooler with?
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Old 09-13-2005, 12:17 PM   #34
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I'll send you a PM. Thanks in advance. I also found a B&M cooler at Jegs for about $45, but not having the car at my disposal, I can't measure for anything. Any more pics of the setup on your '91 will be great. I'm definitely interested in seeing the lines. What did you plug up the fittings on the factory cooler with?
I didn't plug the factory cooler... I am using it as well... Its being used in GM fashion... I got the PM... At least now I won't forget...

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Old 09-13-2005, 12:20 PM   #35
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I didn't plug the factory cooler... I am using it as well... Its being used in GM fashion... I got the PM... At least now I won't forget...
Now, I really have to see this setup.
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Old 09-13-2005, 02:29 PM   #36
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Ok.... Here it is...


This is the 180* U bend that I used at the top radiator Trans oil cooler port( just like the SSEi'* and the SE'*( 92 model year with the Towing package giving it the OEM Aux factory cooler )... The PN for the U bend tube is GM PN# 25615308 <---- the U bend I used on the 91 & 95




Now if you look just to the right of the U bend tube, you'll see the other trans line, Nice and metal looking...LOL... This the trans line for 92-93 H bodies equipped with a tow package... GM PN# 25606751 <----- This is the line I used on my 91... For my 95 I actually used the line for 94-95 with supercharger... LOL




Here you can see that I have ran the lines behind the head lamp, and covered the lines in 3/4" wire loom( I think it was 3/4'* )





There are the lines to the Trans cooler......





Here you can see my crappy attempt at getting some measurements... Couldn't find the tape measure.. The Cooling area is about 12" long, 7.5 to 8 " wide and 3/4" in thickness...







Not the prettiest installation... But after all of the bloodshed I was happy with it... I snapped this pic from the bottom..lol... Here is where I ran into a little problem... And whay you may not want a supersized cooler... The cooler had to be sandwiched between the condenser and the hood support... I could not install it without removing the support... Once I reinstalled the support I was worried that the Cooler and support would rub and create a hole in the cooler... I have had no issues... I had to slightly bend the cooling fins behind the hood support... And I mean slightly... They just barely touch... I don't think I have 1 mm of a gap between the 2... So that may be something for you to think about... Huge coolers make for a tight squeeze...




This is what the fluid looked like.... I changed it 6 months ago I think... And the car has been through some good heat this year... we had 56 days I think it was with temps in the mid 90'*, and the fluid still looks good... I think I have had the cooler for almost 2 years on my 91... And it had done well... In the past the fluid would be oxidised after 10,000 miles... and the shifts would show it... As long as I have had this car I always had to change the fluid before and after the summer, untill I installed the tranny cooler... That fluid still looks good... and the trans shows it too...


If you were to do this, you may want to get the U Bend from the dealership, and see if you can get the tranny line from the autoparts store.... You'll have to get the line for a 92 with a tow package( aux cooler )... But it should all come together... I just wanted to use the factory lines as opposed to running rubber lines all over the place... I should have fabbed up some brackets for the cooler... Would have looked much better...lol

If there is anything else I can hopefully answer please let me know...

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