So I was at the junkyard a couple days ago and found a turbo that was just laying on the ground in a now unused area of the yard. Was wondering if itll work on my car.

Garrett M.24 A/R.50

 

Looks really small.

 

Well its a 50 trim, I'm used to working on rigs. So I don't know if its small for a car.

 

i dont think thats a 50 trim but yeah it looks very usuable on ur car, esecially if u get a twin scroll manifold for it. and the .50 a/r describes the housing size not the compressor wheel.


mike

 

How do I find the trim size?

 

Look for a model number and search it on their site or forums.

 

That's kinda the problem I'm having, no model # and the serial plate is broken:/

 

Well just measured the Turbine, its a t4 flange. Now just have to figure out the trim size.

 

yep that came off a diesel truck of some sort....... maybe an isuzu or something? they always have big hotsides for flow and little compressors for quick spool up due to lack of rpm potential. anyways what do u want to put it on again........... even if u do an equal length twin scroll manifold it still is not going to spool real quick. i thougt it was a divided t3 hotside. judging by the size of the compressor wheel and ur thumb in the pic (and thats what helped me to detemine that it wasnt a 50 trim........ well that and 50 trim t3/t4 turbos sit in .60 a/r housings not .50 a/r)


mike

 

Want to see if it'll work on the cobalt... :/

 

definitely looks like a t4 exhaust housing. im not sure you want to run a t4 exhaust housing on a 4 cylinder. its going to be laggy. my t3 .82 ar exhaust housing doesnt spool till 4500rpm so i cant imagine the t4 housing. does the exhaust housing have an a/r stamp on it?

 

Ya but doesn't the compressor control the spooling speed??and it is a t4 exhaust side

 

exhaust side dictates it more. u gotta think if that housing is that big the exhaust flow will move the wheel obviously but it really wont start to pick up any velocity to really get that wheel going until the rpms get pretty high up there. read what i posted above about why the diesel turbos are setup this way.


mike

 

whats ur setup consist of and how much power are u making?


mike

 

Looks like a T4 divided housing 50 trim in a E hybrid S cover. Size of comp is fine for the motor.

 

By divided housing do u mean the two 'pipes' on the exhaust side? And don't know what E-hybrid S cover means:s

 

It means a divided inlet turbine housing. It separates the intake and exhaust pulses.


E covered turbos are smaller than S. E usually have 2.75 or 3" inlets, while S covers are larger and typically have 4" inlets. A Hybrid E has the smaller size, but a 4" inlet.

 

Oh okay, I understand now thanks! Any idea on approx how much hp I could make with this on the 2.2?

 

What's the turbine A/R? Usually stamped on the housing....

Probably 350HP

 

Turbine A/R is .96 its also marked with MI then 2G, not sure what those mean.

Also if it matters the compressor inlet is 3" and the turbine outlet is also 3"

 

dezod a divided housing does not divide the intake and exhaust pulse.

to the OP...... first of all the pairing is based off the firing order and in most 4 cylinder cars cases thats gonna be 1-3-4-2.......... 1 and 4 are paired and 2 and 3 are paired. the whole point in this is so the exhaust pulses hitting the turbine wheel are not disturbed by the next pulse in the firing order. so lets say #1 fires and then in the adjacent collector #3 fires and then back to the original collector for the #4 cylinder to fire. u get what im saying? being thats the runners are paired this way allows bigger turbos to be spooled up quicker using this design as its just more efficient ultimately causes theres not as much interference or turbulence i guess in the collector area like in a open design.


heres twin scroll mani i recently made for a neon with a big boy turbo........






oh and u will need to run twin gates.......... or u can run a single but u need to run tubing from each collector to a common w/g flange and keep them divided up till that point.



mike

 

Too large a turbine A/R for this car. Won't spool until VERY late in the power band.

 

Mike, you just glorifiedly explained the dividing of the pulses in which I was attempting to keep VERY simple because the OP's questions where VERY simple.

 

how did u simplify it? it has nothing to do with the intake unless ur trying to say it an another way which has left me stumped sir.


mike

 

K so it won't spool quick on a cobalt, but if I were to do the same as mike n throw it on my 2gn neon it would.. Doesn't seem to make sense how my $500 01 neon can get it to work, but a cobalt can't.. What would very late be in the rpm range?v