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 Post subject: Aluminum Coolant Elbows
PostPosted: Mon May 21, 2018 10:41 am 
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Location: Muskego,Wisconsin
Year and Trim: 2000 SLE & 2001 SLE
1975 Monte Carlo
I have a 2001 SLE and installed aluminum coolant elbows about 1 1/2 years ago.
The other day is was leaking antifreeze and I found out is was coming from the coolant elbows.
After taking it apart I found out that the O-rings on the elbows had completely disintegrated.
I am thinking that the cheap Chinese material that they used was probably not a Viton material.
I now think I will go with the original GM plastic elbows which probably have the correct O-ring material.
I also could switch the O-rings from the plastics ones and use on the aluminum ones.
Has anyone else encountered this problem?


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PostPosted: Mon May 21, 2018 11:12 am 
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Location: Central Illinois
Year and Trim: 1992 SSE
2009 G8 GT
I'd put new o-rings on. Going to plastic will leave you right where you began. You'll also want to make sure there isn't any flashing in the ring grooves, damaging the o-ring.

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WHITE WHINE - IT'S INTOXICATING. 1992 SSE Supercharged 236.26 ci (.040 Over)
15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Easy Performance Gen 3 Air/Fuel Calibrator, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers and 10" Subs, 1300 watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, McCoy Motorsports Ceramic Coated Ported Exhaust Manifolds, Fan Override, PowerSlot Slotted Rotors.
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim Trailblazer mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser


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PostPosted: Mon May 21, 2018 12:11 pm 
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IIRC Andrew had a similar problem with the o-rings on the metal elbows. I did a quick search here, and couldn't find it. It's possible that it was on Facebook. I don't recall what o-rings (if any) were used as a replacement, but it was believed that by now the problem had been solved. So, you might just want to replace the elbows with new.

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PostPosted: Mon May 21, 2018 12:49 pm 
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Location: Muskego,Wisconsin
Year and Trim: 2000 SLE & 2001 SLE
1975 Monte Carlo
The holes where the elbows fit into were clean and smooth.
The problem is that the material that the O-rings were made of fell apart.
I know in the past I have had problems with material from China where O-rings have failed.
I am going to buy the GM OEM plastic ones and use those O-rings on the new aluminum ones.
It is really frustrating that I thought I took care of this issue and now I have to take care of it again.
Nothing ticks me off more than having to redo something that I did correct in the first place and then redo again.
Maybe I am paranoid (my wife would agree) but I have no faith in items from China.
The problem is in a lot cases you have no choice.
So much for my rant!!!

Thanks for your replies.


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PostPosted: Mon May 21, 2018 1:03 pm 
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Joined: Mon May 19, 2008 7:01 pm
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Location: Central Illinois
Year and Trim: 1992 SSE
2009 G8 GT
I was referring to the grooves on the elbow that the o-rings sit in.

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WHITE WHINE - IT'S INTOXICATING. 1992 SSE Supercharged 236.26 ci (.040 Over)
15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Easy Performance Gen 3 Air/Fuel Calibrator, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers and 10" Subs, 1300 watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, McCoy Motorsports Ceramic Coated Ported Exhaust Manifolds, Fan Override, PowerSlot Slotted Rotors.
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim Trailblazer mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser


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PostPosted: Mon May 21, 2018 1:16 pm 
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Location: Muskego,Wisconsin
Year and Trim: 2000 SLE & 2001 SLE
1975 Monte Carlo
O.K.
I will check and make sure they are good.
Thanks.


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PostPosted: Mon May 21, 2018 5:08 pm 
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
I replace the Dorman o-rings on every set I install, they are junk.

I use AC Delco 24502846 & 25537068.

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PostPosted: Mon May 21, 2018 7:29 pm 
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Location: Muskego,Wisconsin
Year and Trim: 2000 SLE & 2001 SLE
1975 Monte Carlo
harofreak00 thank you for the part numbers.
Do you know how many of each I need for the 2 elbows?
I believe 3 are one size and the other is another size.
Thank you.


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PostPosted: Tue May 22, 2018 10:40 am 
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Joined: Mon May 19, 2008 6:04 pm
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
smaller: 25537068 x3
larger: 24502846 x1

I have these in stock if you want me to just drop them in an envelope for you. PM me if interested.

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2004 Bonneville GXP | White Gold Tricoat | custom built supercharged 3800 hot rod
2005 Town & Country Limited | Butane Blue Metallic | 270k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 190k | Official Bonneville Hauler


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PostPosted: Tue May 22, 2018 3:46 pm 
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Location: Muskego,Wisconsin
Year and Trim: 2000 SLE & 2001 SLE
1975 Monte Carlo
Thank you for the information & offer.
I ordered some already.
Should have in a couple of days.
Thanks again.


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PostPosted: Wed May 23, 2018 6:59 am 
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Year and Trim: 2003 SSEi
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Just repaired a car yesterday that had Dorman elbows already installed, but one of the O rings had failed. Looks like we'll be stocking these O rings, and putting them on the replacement elbows. Thanks!!


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