LDT turbo specs come in here!!!

[Blackmagic94]

Ok lets discuss known factual info on the specs of the C/D turbos in here.


I want to know the following

Compressor MM size
Turbine MM size
Compressor A/R housing size
Turbine A/R housing size
Downpipe flange OD/ID

Compressor Map

 

[wsucougarx]

Wished this thread popped up a couple weeks ago. I could have taken all the measurements I could during my 3LJ-319 rebuild.

 

[Katahdin]

I found this on a diesel site for the 3LJ-319 (C):

its a s300 60-61mm comp and 70mm hot.....if its off a deuce than its a t-4 [flange]

 

[Blackmagic94]

Does anyone have a unit off the truck right now?

 

[Bob H]

using the model # posted ealier in this thread I was able to find these pics of the D turbo
and C turbo sizes were given also in this thread.

 

[Blackmagic94]

Nice. So it's a 54mm compressor. Now I'm curious if the a/r is cast on the housings like modern turbos

 

[ODdave]

I will go look, Not shure why my posts got deleted but we will try again......

I looked at a couple of spare "C" turbos I have and this is what i come up with.

Inducer wheel- 54mm 12 vane 2 stage
Exducer wheel- 66mm 11 vane

Marking in the exhaust reads 29, With what looks like an A behind it. I cannot say if this is an a/r ratio because I dont see a decimal point.

 

[Blackmagic94]

Thanks for the info, can you take a picture of the casting marks?

 

[Blackmagic94]

Are we sure its a T4 exhaust flange?

 

[rattlecan6104]

I thought it was a T-4 flange as well, then measured the old gasket off of mine and found it to be a T-6

 

[Turbo Detroit]

All multifuel flanges are T-6....The whistler is also a twin scroll turbo to help it spool faster...the d and the 3ld-305 are twin scroll exhaust housings

 

[brianp454]

Do any of you guys have part numbers (such as for NAPA?) to allow me to pick up the rectangular exhaust flange and round exhaust ring gaskets? I'm hoping to get them locally rather than order them from one of the surplus places.

 

[gimpyrobb]

The gasket size has been posted. Most turbo shops should have them. I think the turbo to manifold gasket is under $10 at that type of shop. The others should be just a standard "turbo exhaust gasket".

 

[gimpyrobb]

Check post #4

http://www.steelsoldiers.com/showth...ket-OVERNIGHT-Shipping&highlight=turbo+gasket

Or this one:
http://www.steelsoldiers.com/showth...-all-3-from-CAT-dealer&highlight=turbo+gasket

Search a "popular auction site" using this number.
250166556049