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Oldsmobile Diesel Discussion

 
Edward A. Sanchez
Administrator
Posts: 2112
Joined: 07/06
Posted: 07/18/06 07:13 AM

Some people have said the Oldsmobile diesels made in the late '70s and early-mid '80s were some of the worst engines GM ever made? Do you agree or disagree?  

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nfmisso
New User
Posts: 19
Joined: 08/07
Posted: 04/18/08 07:58 PM

The V8 Olds diesels were - many issues including not enough bolts around each cylinder for a diesel.  The 4.3 litre Olds V6 was actually a decent engine - it had more bolts around the cylinders.  There were three Olds diesels: 5.7 and 4.3 litre V8s and the 4.3 litre V6.  

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Christine5
Enthusiast
Posts: 310
Joined: 12/07
Posted: 04/18/08 08:25 PM

I cant bash them, diesels were just coming into the seen for dailey drivers and pickup trucks.I wouldnt want one though,they had a lot of problems.  
A real toy for big boys.I installed a 5.9-B Cummins, P-7100 inline stage one pump,  banks cooler,5in exh,removable air bags for towing, 1in body lift,2in hanger lift,2 12in elect fans, customized mounting,(eng mounts,intake piping,trans adapter etc) Runs on home made bio-fuel at 70 cents a Gal.

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djphillips1985
New User
Posts: 4
Joined: 05/08
Posted: 05/04/09 10:49 PM

I have a 1979 Cadillac Eldorado with the 5.7 Olds Diesel, & I am going to make it reliable - there are mods available for these engines, such as ARP head studs, copper head gaskets, ETC.  
The pic in my avatar is NOT my car anymore. I sold it & got an Eldorado Diesel, but can't find pics of it at the moment...

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djphillips1985
New User
Posts: 4
Joined: 05/08
Posted: 05/04/09 10:50 PM

Got any advice, Esanchez?  
The pic in my avatar is NOT my car anymore. I sold it & got an Eldorado Diesel, but can't find pics of it at the moment...

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MarineOne
Addict
Posts: 2070
Joined: 10/08
Posted: 05/05/09 02:26 AM

I got a chuckle about this post.  The 5.7 Olds was one of, if not the worst, diesel engines ever made.  My dad ran 3 trucks with them, and if something went wrong we had motors on stand-by ready for swaps.  We got so good we could swap out an engine and be rolling again in under 9 hours.  Then we'd take apart the swapped out engine, fix it, test it, and place it back in queue for the next truck that went down.

Gutless, smoke beltching behemoths that could get decent mileage if the engine was right .... and that wasn't too often.



Kris  

2006 Dodge Ram 2500 QC 5.9L - Smarty CR S-06 on SW #5

2008 Dodge Ram 3500 QC 6.7L - H&S MiniMaxx on DPF tune for towing
Titan Fuel Tank
Aero Muffler 4040XL
Nathan AirChime K3LA

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Edward A. Sanchez
Administrator
Posts: 2112
Joined: 07/06
Posted: 05/05/09 11:21 AM

dj, sorry for the delay in responding to you. I have heard of a few guys swapping in the 6.2 and 6.5 diesels into the Olds. I don't know what all is involved in this, and whether or not it's hard or easy. There's certainly a lot more power potential (relatively-speaking) for the 6.2 and the 6.5 than for the 4.3 and 5.7. Those engines had enough trouble without any boost. I can only imagine what a few pounds of pressure would do to them!  Tongue

There are a few obscure Olds diesel sites out there with some tuning an maintenance tips, but I can't think of them off the top of my head. I'll see if I can do some digging and come up with something for you.  

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79Eldo350
New User
Posts: 3
Joined: 05/09
Posted: 05/10/09 11:21 PM

Hey, this is (or was) djphillips1985, I inadvertently deleted myself, so now I am back as 79Eldo350. Cool  
This car is not mine, but looks almost exactly like it, and proudly sports the Diesel badges!

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79Eldo350
New User
Posts: 3
Joined: 05/09
Posted: 05/10/09 11:24 PM

Here's one of them, I am a member under the same username as here on DP...
http://forums.delphiforums.com/350Diesel  
This car is not mine, but looks almost exactly like it, and proudly sports the Diesel badges!

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zwrench
New User
Posts: 3
Joined: 03/10
Posted: 03/25/10 12:56 PM

Does any one know where to get a .030 over piston for the 5.7 olds diesel  

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zwrench
New User
Posts: 3
Joined: 03/10
Posted: 01/06/11 10:00 AM

I have a DX engine out of a  1982 olds car. Complete would sell cheap. pump-starter-extra heads.  Needs crank kit.  

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MarineOne
Addict
Posts: 2070
Joined: 10/08
Posted: 01/06/11 10:08 AM

Ed,

Since the 6.2/6.5 use almost the same mounts and will bolt up to the 350/400 series and the 7R400 transmissions, the swap from a 5.7 is actually easier than one would think.

The biggest issue would be the exhaust.




Kris  

2006 Dodge Ram 2500 QC 5.9L - Smarty CR S-06 on SW #5

2008 Dodge Ram 3500 QC 6.7L - H&S MiniMaxx on DPF tune for towing
Titan Fuel Tank
Aero Muffler 4040XL
Nathan AirChime K3LA

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Andreas Winter
New User
Posts: 2
Joined: 02/14
Posted: 02/24/14 06:09 AM

Hello,

I just blew my head gasket after 7 years and I'm wondering where I can get the copper gaskets. Do I have to reface the block and the head before I do the gaskets. I was always happy with the engine before I had to do the lifters 4 months ago and now the head gasket is bad. I wonder if those failures were related to each other. I would appreciate any help. I even have a spare engine but I would rather fix the one I have.  

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Andreas Winter
New User
Posts: 2
Joined: 02/14
Posted: 02/24/14 06:14 AM

Hello,

I just blew my head gasket after 7 years and I'm wondering where I can get the copper gaskets. Do I have to reface the block and the head before I do the gaskets. I was always happy with the engine before I had to do the lifters 4 months ago and now the head gasket is bad. I wonder if those failures were related to each other. I would appreciate any help. I even have a spare engine but I would rather fix the one I have.  

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MarineOne
Addict
Posts: 2070
Joined: 10/08
Posted: 02/24/14 08:22 PM

SS Diesel should have what you need.  They are the specialists when it comes to the 5.7 Olds diesel.


-Kris  

2006 Dodge Ram 2500 QC 5.9L - Smarty CR S-06 on SW #5

2008 Dodge Ram 3500 QC 6.7L - H&S MiniMaxx on DPF tune for towing
Titan Fuel Tank
Aero Muffler 4040XL
Nathan AirChime K3LA

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