What size is this turbo?

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Originally Posted by darkhorizon

Bullsh!t.

Its a conservative 300whp 50 trim. Its been used on 3800s in the past but dont expect to set records with it.

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I was thinking of using it as i have it, then replace it with a larger one thats better suited as next winters project. Just need to figure out how harge to go to optimize efficiancy.

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Originally Posted by darkhorizon

Bullsh!t.

Its a conservative 300whp 50 trim. Its been used on 3800s in the past but dont expect to set records with it.

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dude its a 48mm turbo...i would be shocked to see it make 300

A stock turbo grand national traps 110mph with some bolt on mods.

A 48mm 50trim is a significant upgrade for them.

A few of the early turbo kits used 50/57 trims. Some used a similar gm46 turbo. All trapped at least 115.

You have no idea what you are talking about.

compressor seems a wee bit small to me for twin charged

i jsut looked at the exhaust housing again...it looks like a t4 on center housing??? if thats indeed what it is sure build your setup around it. when i first saw it i thought it was a t3 turbine

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Originally Posted by NebTurboST5

compressor seems a wee bit small to me for twin charged

i jsut looked at the exhaust housing again...it looks like a t4 on center housing??? if thats indeed what it is sure build your setup around it. when i first saw it i thought it was a t3 turbine

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yeah i know nothing bout this turbo other than the info i posted. If there are gaines to be felt, thin i'll use it for the summer if not then it's no point in mounting it.

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Originally Posted by tweeder

yeah i know nothing bout this turbo other than the info i posted. If there are gaines to be felt, thin i'll use it for the summer if not then it's no point in mounting it.

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measure the bolt spacing on the inlet of the turbine horizontal and vertical. though i dont know if they made that style discharge flange in anything but t4

DarkHorizon can you find a compressor map for this thing?

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Originally Posted by NebTurboST5

measure the bolt spacing on the inlet of the turbine horizontal and vertical. though i dont know if they made that style discharge flange in anything but t4

DarkHorizon can you find a compressor map for this thing?

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Your talking about on the scroll part that bolts the inlet to the backink plate behind the turbine right?

the square part where the exhaust gas goes into the turbine.

god damn this thread makes my head hurt......

that turbo is too SMALL! ............

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Originally Posted by NebTurboST5

the square part where the exhaust gas goes into the turbine.

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Looks to be bout 2.75" x 3.25"

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Originally Posted by 98GrandPrickVet

god damn this thread makes my head hurt......

that turbo is too SMALL! ............

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no way man! DarkHorizon says "BULL****, IT WILL WORK!"

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Originally Posted by tweeder

Looks to be bout 2.75" x 3.25"

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that is a t4 in center turbine housing which means it will bolt up to a cartuning crossover and downpipe fyi. lets see what we know so far.

Compressor:
48mm, 47 trim t04e cover .60a/r

Turbine:
50 trim t4 on center in .58a/r

http://www.turbocharged.com/catalog/...ages/Fig12.gif
this is the closest compressor map i can find for that compressor.

Finally got around to the rebuild and so far i'm gonna need a replacement turbine shaft as the threaded end snapped off. That and some of the parts in the t3/t4 rebuild kit are different. Not sire if its worth the cost of rebuilding the unknown vs the cost of an ebay turbo.
The thrust collar is alot different as well as on my compressor backing plate
http://i152.photobucket.com/albums/s...age.jpg1_3.jpg

And on the backing plate theres a seal and a brass bushing with this sleave in it that is where i am getting play. Those pieces are not in the kit
http://i152.photobucket.com/albums/s...age.jpg1_2.jpg

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Originally Posted by ADecker

Also just a side note, gennerally twin charging (SC and Turbo) is a cool thing but not a very efficient thing. While the S/C does "Run out of steam" per say, it really comes down to we can't spin it any faster efficiently. This is why people switch to turbos. Now, twincharging is cool don't get me wrong; however, its very inefficient. The blower becomes a restriction for the turbo, it cant spin fast enough to force the air into to motor. You would have a hella fast spool, good mid, no upper. Several guys have tried it and enjoyed it for the cool factor, but for numbers Turbo is where its at. Now its your car. Do it if you want, and take lots of pictures lol

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Dude what are you talking about. No upper?? got to be ****ing kidding

http://i1158.photobucket.com/albums/.../dynosheet.jpg

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Originally Posted by danomite02

Dude what are you talking about. No upper?? got to be ****ing kidding

http://i1158.photobucket.com/albums/.../dynosheet.jpg

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What turbo were you running for that dyno?

Its a T70. .96ar hotside.