deisel turbo question
Old School "Turbo" dude
Joined: Feb 2002
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Originally posted by Enthalpy
dude..thats a pair of T-25's the pic is just taken from a weird angle to make them look bigger....
dude..thats a pair of T-25's the pic is just taken from a weird angle to make them look bigger....
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Joined: May 2002
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Hmm, I'm 'spectacularly wrong' but still no details.
Forgive me for trying to help the uninformed reader understand how diesels work since most people I talk to have no idea about how diesels really differ from gas engines.
For the point of clarity I will correct a few of the statements I made where I loosely used the terms temperature and volume where I should have more accurately used the terms heat and mass. When trying to describe the BASICS of how each works I am also referring to normally asperated motors.
A NA diesel flows a certain mass of air for a certain RPM and the heat energy applied to those gasses (from the combustion of injected fuel) is changed based on the needed power output.
In a NA gas engine the heat per mass of air the engine processes is relatively 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 temperature all these facts combine to make most diesel turbos specialized to their application.
For example the turbo on a 6.5 diesel that red lines around 3,500 RPMs is pretty similar in size to the K27 on my 3.3. Which do you think is better suited for a 3 liter gas engine?
Perpahs a turbo from a Mitsu Fuso 4 liter diesel would be great for turbo honda project?
Thats the reason why I stated that I would not be suprised to learn that there are some diesel turbos that might be suitable for a gasoline engine.
Forgive me for trying to help the uninformed reader understand how diesels work since most people I talk to have no idea about how diesels really differ from gas engines.
For the point of clarity I will correct a few of the statements I made where I loosely used the terms temperature and volume where I should have more accurately used the terms heat and mass. When trying to describe the BASICS of how each works I am also referring to normally asperated motors.
A NA diesel flows a certain mass of air for a certain RPM and the heat energy applied to those gasses (from the combustion of injected fuel) is changed based on the needed power output.
In a NA gas engine the heat per mass of air the engine processes is relatively 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 temperature all these facts combine to make most diesel turbos specialized to their application.
For example the turbo on a 6.5 diesel that red lines around 3,500 RPMs is pretty similar in size to the K27 on my 3.3. Which do you think is better suited for a 3 liter gas engine?
Perpahs a turbo from a Mitsu Fuso 4 liter diesel would be great for turbo honda project?
Thats the reason why I stated that I would not be suprised to learn that there are some diesel turbos that might be suitable for a gasoline engine.
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God and Jesus (sorry, meant Scott and John). Yes, all Garrett upgraded turbo's were once on a diesel, but I seriously doubt that there was ever a 57 trim E compressor on a .48 stage 3 turbine used in production. So technically all of you are correct (although I'm sure Tony knows this but figured its such basic knowledge it need not be brought up). If you look at OE diesel apps, they all have reletively huge turbines compared to the compressor.
do not touch mine
Joined: Jan 2003
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Originally posted by zenki_s14
so what size desiel turbo would i be looking for if i want to put it on my ka?
so what size desiel turbo would i be looking for if i want to put it on my ka?
Thread Starter
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Joined: Jun 2003
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Originally posted by bryan
Ok..So you're in japan..and you're worried about putting a truck/van turbo on your US Spec engine? Just get an SR20..Their probably hella cheap there..Then think about utilizing one of those diesel turbos on that engine..thats what Id do atleast..Just an idea...
Ok..So you're in japan..and you're worried about putting a truck/van turbo on your US Spec engine? Just get an SR20..Their probably hella cheap there..Then think about utilizing one of those diesel turbos on that engine..thats what Id do atleast..Just an idea...
ok think about this....u know why sr20s are about 2000 in the states!?!? becuase they cost a grip to ship...i don't have 1200 dollars to spend on an engine right now...but i can pull out 1 free turbo or pull out a buncha free turbos and sell them....hmmmmmm let me think..........sounds like a good idea for some who has no money and would like to make some money..... plus i wanted to be different then every other guy with a 240 with a sr....and i don't want to put a ca in my s14...plus if i did ship a sr20 i'd have to go through the hassle of costums and all that crap...if i wanted to do that then i'd juss go and send back a whole damn car....
