deisel turbo question
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the other problem you will have with using a big turbo off of a diesel is that it will create way too much boost for a gas motor that is not built to handle. I work for a company that sells Yanmar engines, and most of those motors have between 30 and 40 lbs of boost.
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As long as the turbo isn't way too off in sizing, you'll be fine. But be warned, something like that isn't for your average kid looking to go fast, its more for a tinkerer with something else to drive thats looking for fun. You'll probably need to come up with a header to mount it depending on what the turbo is, a wastegate as was mentioned before, all custom made duct work, etc.
Generally speaking, diesel motors are twice the size but rev half as much as an "equal" gas engine. So figure out the engine size, and if it fits into the above situation, you're good.
Generally speaking, diesel motors are twice the size but rev half as much as an "equal" gas engine. So figure out the engine size, and if it fits into the above situation, you're good.
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so does my 97 powerstroke, and the new 6.0 is a piece of shit, serious ICP problems, injector probs...they rushed that engine into production, althoug it makes decent power, no low end balls.
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A good rule of thumb is don't buy a vehicle that is using a new technology that has not been on the road for at least a decade.
It always sucks to be an automotive guinee pig helping to work the bugs out of a new system, often at the purchaser's expense.
I think powerstroke technology is only about five years old.
Give it another decade and you will be hard pressed to find a new diesel motor that injects fuel any other way.
It always sucks to be an automotive guinee pig helping to work the bugs out of a new system, often at the purchaser's expense.
I think powerstroke technology is only about five years old.
Give it another decade and you will be hard pressed to find a new diesel motor that injects fuel any other way.
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Joined: Mar 2002
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Originally posted by 400HP930
If I remember correctly the mapping of the exhaust and intake flows and temps for most diesel turbos do not favor gas motors.
One of the biggest differences about a diesel motor most people are not aware of is that a diesel does not have an intake throttle.
From an intake perspective it is always WOT.
Another difference is that the fuel is also not injected or mixed during the intake stroke. There is an injector that uses hundreds or thousands of PSI to squeeze fuel into the cylinder when its time to make power and the piston is almost to the TDC of the compression stroke.
The 'throttle' on a diesel only effects how much fuel is injected.
Since a diesel is a motor that runs on spontaneous combustion it wants a hot wad of gas to spray some fuel into. Pressure = Heat which is the reason why each intake stroke wants to get all the air it can.
For these reasons a diesel will normally flow a certain amount of air for a certain RPM and the only thing the load changes is the average temp of the combustion gasses.
In a gas engine the heat of combustion per volume of air is fixed, but the amount of air the engine is fed is varied to control power.
Since turbine and compressor maps are combined and optimised based on things like volume, pressure and heat all these facts combine to make most diesel turbos specialized to their application.
I would not be suprised to learn that there are some that might be suitable for a gasoline engine though.
If I remember correctly the mapping of the exhaust and intake flows and temps for most diesel turbos do not favor gas motors.
One of the biggest differences about a diesel motor most people are not aware of is that a diesel does not have an intake throttle.
From an intake perspective it is always WOT.
Another difference is that the fuel is also not injected or mixed during the intake stroke. There is an injector that uses hundreds or thousands of PSI to squeeze fuel into the cylinder when its time to make power and the piston is almost to the TDC of the compression stroke.
The 'throttle' on a diesel only effects how much fuel is injected.
Since a diesel is a motor that runs on spontaneous combustion it wants a hot wad of gas to spray some fuel into. Pressure = Heat which is the reason why each intake stroke wants to get all the air it can.
For these reasons a diesel will normally flow a certain amount of air for a certain RPM and the only thing the load changes is the average temp of the combustion gasses.
In a gas engine the heat of combustion per volume of air is fixed, but the amount of air the engine is fed is varied to control power.
Since turbine and compressor maps are combined and optimised based on things like volume, pressure and heat all these facts combine to make most diesel turbos specialized to their application.
I would not be suprised to learn that there are some that might be suitable for a gasoline engine though.
Old School "Turbo" dude
Joined: Feb 2002
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Originally posted by obrien2
the other problem you will have with using a big turbo off of a diesel is that it will create way too much boost for a gas motor that is not built to handle. I work for a company that sells Yanmar engines, and most of those motors have between 30 and 40 lbs of boost.
the other problem you will have with using a big turbo off of a diesel is that it will create way too much boost for a gas motor that is not built to handle. I work for a company that sells Yanmar engines, and most of those motors have between 30 and 40 lbs of boost.
Wastegate???
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this is exactly how internet lies get started. Diesel turbo's are IDENTICAL to gasoline turbos.
This just in from the news desk....
all the Garrett T04B and T04E turbos that performance enthusiasts love were designed for over the road trucks...that were diesel.
Do us all a favor...if you dont know what you are talking about then stay out of conversations. the only reason a "diesel" turbo wont work on a gasoline engine is that it MAY be sized wrong. If you dont know what youa re looking at when buyign used turbos...then dont buy it. you have a 90% chance of buying something that is the wrong size.
although we appreciate the diatribe on the physics of the diesel engine by 400HP Escort Wagon (some of which were wrong).
This just in from the news desk....
all the Garrett T04B and T04E turbos that performance enthusiasts love were designed for over the road trucks...that were diesel.
Do us all a favor...if you dont know what you are talking about then stay out of conversations. the only reason a "diesel" turbo wont work on a gasoline engine is that it MAY be sized wrong. If you dont know what youa re looking at when buyign used turbos...then dont buy it. you have a 90% chance of buying something that is the wrong size.
although we appreciate the diatribe on the physics of the diesel engine by 400HP Escort Wagon (some of which were wrong).
