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Old 03-15-2012, 04:17 AM   #1
1980ST
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Default Sd33/Sd33t

I just recently bought a 1980 diesel traveler, the body tag under the hood reads "engine family sd33t" the numbers from the front left side of the block read "sd33-######" . My question is, is this a transplant engine or possibly the original. Manifolds are not turbo equipped manifolds.
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Old 03-15-2012, 06:33 AM   #2
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Default Re: Sd33/Sd33t

Moved to the correct area. Please take a moment to better understand our website as this is the second time I have moved one of your postings.

All 1980's had the turbo while the earlier years did not. If the engine does not have a turbo on it then it is not the original engine.
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Old 03-15-2012, 06:57 AM   #3
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Default Re: Sd33/Sd33t

Um I'm sorry. The forum said have a question for Isa ask it here, so I did, maybe its the site, I thought I was posting in the correct location.
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Old 03-15-2012, 07:06 AM   #4
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Default Re: Sd33/Sd33t

I've read some things about putting a turbo on a non turbo sd and some people say that to keep the engine safe you have to replace some inner seals and even saw some say pistons too, is this true? Aside from manifolds what is necessary to complete this conversion?
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Old 03-15-2012, 10:17 AM   #5
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Default Re: Sd33/Sd33t

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I've read some things about putting a turbo on a non turbo sd and some people say that to keep the engine safe you have to replace some inner seals and even saw some say pistons too, is this true? Aside from manifolds what is necessary to complete this conversion?
If there is no turbo it is not the original engine. All 1980's Scout II's were turbo engines. You can convert a none turbo engine to turbo, simply by finding a turbo intake and exhaust with the turbo and bolting it on or making your own.

However, this is not recommended. The turbo motors have an upgraded cooling system and it has oil squirters in the block to cool the bottom side of the pistons. The pistons are different, they have 5 rings instead of 3 and the top ring grove in armored.
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Old 03-15-2012, 01:03 PM   #6
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Default Re: Sd33/Sd33t

Thank you for the info it is much appreciated. What is your personal take on doing this, (turbo-ing a non turbo) have you herd of people blowing blocks and or melting pistons after the mod? What is the probability of harm coming to the engine, moderate risk or low risk? I've read that its a low risk but I don't want to take any chances without proper research, I plan on using this rig as a daily driver and hunting vehicle.(michigan) thanks for your time, tb.
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Old 03-15-2012, 01:49 PM   #7
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Default Re: Sd33/Sd33t

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thank you for the info it is much appreciated. What is your personal take on doing this, (turbo-ing a non turbo) have you herd of people blowing blocks and or melting pistons after the mod? What is the probability of harm coming to the engine, moderate risk or low risk? I've read that its a low risk but I don't want to take any chances without proper research, I plan on using this rig as a daily driver and hunting vehicle.(michigan) thanks for your time, tb.
In my opinion you are builsing your engine to fail. Your going to invest in failure. It is not a matter of if you are going to crack pistons but when. Part of having a diesel is reliability and longevity and putting a turbo on the engine takes away both of those.

Also there is no fuel compensation on the injector pump so anytime your boosting the engine will run lean, which means more heat. All around a bad idea.
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Old 03-19-2012, 04:10 AM   #8
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Default Re: Sd33/Sd33t

Thank you for the tips, it sounds as tho I would be better off just saving my money and running this engine until I can afford an old original turbo engine. Any idea on the cost of such an engine? What is the bolt pattern for lugs on an IH, 5-4?
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Old 03-19-2012, 12:35 PM   #9
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Default Re: Sd33/Sd33t

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thank you for the tips, it sounds as tho I would be better off just saving my money and running this engine until I can afford an old original turbo engine. Any idea on the cost of such an engine? What is the bolt pattern for lugs on an IH, 5-4?
It's not often the running sd33t's come up, but I'd expect to pay 1500-2500 for one depending on miles. I'd also make sure to hear and see it run before I bought it, and do a cold start on it.

Lugs are 5 on 5.5"
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Old 03-20-2012, 03:41 AM   #10
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Default Re: Sd33/Sd33t

Haha, I called and talked to the Super Scout Specialists out of ohio just yesterday about an sd turbo and he quoted me, on one that has ring problems and needs to be rebuilt, at 1000$. Found some steel rims locally yesterday as well, said to be original chrome rally's in fair condition.
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Old 03-20-2012, 06:43 AM   #11
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Default Re: Sd33/Sd33t

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haha, I called and talked to the Super Scout Specialists out of ohio just yesterday about an sd turbo and he quoted me, on one that has ring problems and needs to be rebuilt, at 1000$. Found some steel rims locally yesterday as well, said to be original chrome rally's in fair condition.
I wouldn't laugh as $1000 is what the cores are worth these days. We have them too if you want a rebuildable core. Otherwise keep looking as they are hard to come by for a reason. Reman sd-33 engines sell for over $6000 these days.
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Old 03-20-2012, 07:00 AM   #12
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Default Re: Sd33/Sd33t

Its not so much the price I was concerned about but rather the fact that they don't know exactly what the problem or problems are. It would be one thing to purchase a remand engine but to put a grand down on something thats broken and I have to fix not knowing all the issues or potential issues that would arise, thats an issue for me. Its good to know the remand price tho I was ball-parking around 5g. What is the cost of the complete rebuild kit? And when you say "core" is that complete engine; manifolds, intake, turbo the whole shot, or just the block?
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Old 06-26-2014, 07:47 AM   #13
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Default Re: Sd33/Sd33t

When putting a turbo on a non turbo engine don't you have to raise deck height to lower compression ?
I know in gas motors that's vital so as not to melt pistons and such
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Old 06-26-2014, 01:14 PM   #14
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Default Re: Sd33/Sd33t

Any quick way to check if he's got a turbo motor, but a po had problems with the turbo and chucked it ?
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Old 06-26-2014, 02:10 PM   #15
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Default Re: Sd33/Sd33t

For a diesel, no compression changes are required until you start to get way up in the boost range. More fuel = hotter, less = cooler. You can't run a diesel "lean" per se. If the amount of fuel the injection pump is putting out remains the same your engine will run cooler with the addition of a turbo than without. Factory turbo engines are always upgraded in some form or fashion to handle the additional power output as normally there is more fuel added to coincide with the increase in air. Hope this helps a little.
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