mopardart72
I'm a pretty big deal
are there any differences from a diesel turbo and a car turbo. was in class today and this question crossed my mind
diesel turbos whats the difference!?
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jrlegacy23
68 Barracuda
I am not a turbo expert, but I would imagine that a diesel turbo winds out at a low RPM because most diesels are not high revving engines.
Mrmopartech
Well-Known Member
A desiel turbo needs to put out a large amount air volume and a modest amount of pressure,thus the large turbo that works with a motor that has very little rpm,but plenty of torque.A car turbo can use high rpm to make plenty of boost and still fill the cylinders with plenty of air.A car turbo will spin 80,000-100,000RPM to make this possible,these are real world numbers.The diseil turbo will run about 50-60,000rpm to do the same work,but be able to pull a 15,000lbs trailer with no problem,the car will have a bit of a problem trying to do the same thing,mrmopartech
1qwikScamp
Well-Known Member
i have a rather large turbo off of a detroit diesel engine on a 400 in my 72 pickup and it does great i couldnt be more happy
![0128001621[1].jpg](https://www.forabodiesonly.com/mopar/attachments/0128001621-1-jpg.152621/ "0128001621[1].jpg")
I will try to clarify for everyone the difference between Big Diesel Turbo's and Turbochargers that would be compatible to a street car.
What is the most common known Diesel that we can relate to?
The Cummins 5.9L of course.
The Cummins 5.9L underwent a number of revisions since its inception.
The turbocharger dimensions though stayed pretty much the same over the years....not to say they didnt change it up a little, But the Compressor Side and Exhaust Side wheels remained about the same...because the airflow requirement never changed...it remained a 5.9L throughout.
The most Common Turbocharger on the Cummins 5.9L is the HY-35.
There are H W Y- 35's the W designating "Wastegate Equipped."
HX35's
and even HX40's.
Forget the numbers in the names. The important thing about turbochargers, is Compressor Inlet (inducer) size...measured in MM.
The Exhaust outlet (Exducer) size...measured in MM.
Then...you need to know the Exhaust INLET choke size....its usually cast onto the side of the flange, or just below it...it will say something like .43, .68, .86, .98, 1.04, 1.13, or A/R, or 15cm, or 17cm or 20cm or 22cm or something.
Then, its good to know...
Whether or not the Center Section is "Water Cooled" (does it have water ports)
Or does it just have a Oil Inlet Fitting, and a Large Oil Drain hole in the Center Section.
Once you know THAT data, you can begin to try to size a turbo to an engine.
Although it is possible...to bolt a turbo from a 19L Diesel Engine onto a smaller V8, the choke size of the exhaust inlet comes into play...being that the Smaller V8 does not produce enough exhaust air to really spin the big heavy turbine wheel.
The exhaust size/flow from the V8 needs to match the Exhaust OUTLET exducer size on the turbo.
If the exhaust turbine EXDUCER matchs the adequate size of SINGLE Exhaust that WILL NOT RESTRICT THE V8, then the turbo will most likely work effectively.
Anotherwords.....if a single stalk of 3" exhaust pipe does not have a backpressure of more than 2 psi when ran on SAID engine from 1000-MAX RPM, then 3" is the correct exhaust pipe diameter size...so that engine would require a turbo with a Minimum of a 3" Turbine Exducer.
Finding a diesel turbo with the right size exhaust THAT ISNT TOO BIG and a Compressor that is also upto the task is the challenge.
I prefer to buy new, and specify all the sizes and dimensions...its hard to describe all this...but I hope I helped.
What is the most common known Diesel that we can relate to?
The Cummins 5.9L of course.
The Cummins 5.9L underwent a number of revisions since its inception.
The turbocharger dimensions though stayed pretty much the same over the years....not to say they didnt change it up a little, But the Compressor Side and Exhaust Side wheels remained about the same...because the airflow requirement never changed...it remained a 5.9L throughout.
The most Common Turbocharger on the Cummins 5.9L is the HY-35.
There are H W Y- 35's the W designating "Wastegate Equipped."
HX35's
and even HX40's.
Forget the numbers in the names. The important thing about turbochargers, is Compressor Inlet (inducer) size...measured in MM.
The Exhaust outlet (Exducer) size...measured in MM.
Then...you need to know the Exhaust INLET choke size....its usually cast onto the side of the flange, or just below it...it will say something like .43, .68, .86, .98, 1.04, 1.13, or A/R, or 15cm, or 17cm or 20cm or 22cm or something.
Then, its good to know...
Whether or not the Center Section is "Water Cooled" (does it have water ports)
Or does it just have a Oil Inlet Fitting, and a Large Oil Drain hole in the Center Section.
Once you know THAT data, you can begin to try to size a turbo to an engine.
Although it is possible...to bolt a turbo from a 19L Diesel Engine onto a smaller V8, the choke size of the exhaust inlet comes into play...being that the Smaller V8 does not produce enough exhaust air to really spin the big heavy turbine wheel.
The exhaust size/flow from the V8 needs to match the Exhaust OUTLET exducer size on the turbo.
If the exhaust turbine EXDUCER matchs the adequate size of SINGLE Exhaust that WILL NOT RESTRICT THE V8, then the turbo will most likely work effectively.
Anotherwords.....if a single stalk of 3" exhaust pipe does not have a backpressure of more than 2 psi when ran on SAID engine from 1000-MAX RPM, then 3" is the correct exhaust pipe diameter size...so that engine would require a turbo with a Minimum of a 3" Turbine Exducer.
Finding a diesel turbo with the right size exhaust THAT ISNT TOO BIG and a Compressor that is also upto the task is the challenge.
I prefer to buy new, and specify all the sizes and dimensions...its hard to describe all this...but I hope I helped.
MadScientistMat
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I have seen a couple cases of HY35s and HX35s successfully used on smaller engines like BMW slant sixes. Two of them on a smallblock would probably work out pretty well.
The biggest gotcha with diesel turbos was when draw through carbs were big - lots of diesels aren't sealed for a draw through throttle body and the vacuum from the carb upstream would pull oil out into the intake. Draw through carb installs aren't nearly as popular as they used to be.
The biggest gotcha with diesel turbos was when draw through carbs were big - lots of diesels aren't sealed for a draw through throttle body and the vacuum from the carb upstream would pull oil out into the intake. Draw through carb installs aren't nearly as popular as they used to be.
UOP
Well-Known Member
The Borg Warner S400 turbo is a very popular for v8 applications (single turbo). The reasons are that they are cheap (~$600), reliable(used in countless commercial diesel trucks), and can make some serious power (well over 500whp, 98lb/min rated for the 75mm wheel). The only real drawback is its size (40lbs, midsize turbo).
Here's a link to someone who sells ALOT of them.
http://www.turbodaves.com/
Hope this helps!
Here's a link to someone who sells ALOT of them.
http://www.turbodaves.com/
Hope this helps!
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