Non-whistling whistler...why?

[chemicaljohn]

If anyone has suggestions on this I would appreciate it...
I've had my Deuce since the summer. I never really looked into which turbo it had installed, just knew it didn't have the sound of a "C". After starting some work on the truck, I looked at it and guess what? It's a "C"... I only hear the whistle when shifting... faintly. Disconnected the intake and exhaust and both turbines look fine, no touching the housing and spins freely with a little side play, not enough to make contact. Any ideas why it doesn't whistle??

Here's a pic of it... everything i've looked up on here including pics says that is what I have.

 

[gimpyrobb]

Thats got a different housing that what I've seen before. Let me go look at the one in the basement.

 

[gimpyrobb]

Yup, way different. Got a side shot of the intake?

 

[Westech]

Thats NOT a C turbo

 

[gimpyrobb]

427?

 

[gimpyrobb]

My C turbo:

 

[chemicaljohn]

Wow, way different... let me go take a couple pics real quick!

 

[AMGeneral]

This appears to be the same turbo that scooter01922 has on his truck,definetly not a whistler!!

 

[Westech]

not a 427.. I think there is a bolt on flange on the exhaust out put. thinking its a "D" turbo.

 

[scooter01922]

Yup, good eyes AMG...i was just off looking at my pics to make sure they were the same. Its been a while since i really looked at it for any reason. Its an oddball turbo but it seems to work fine. Only really hear and whine when upshifting and under hard acceleration at high RPM's. FWIW i am going to put in a pyro and boost gage in the spring and then i can get some readings for those wondering about its performance. Has to be some reason there are only a few floating around, on deuces at least.

Scott

P.S. Westy its def not a "D"

 

[chemicaljohn]

The exhaust end is way different than a C now that I look closer, but doesn't really look like a D either... would this be good or bad to have this one if it's not either?

 

[gimpyrobb]

If your truck runs good with it, run it. If you feel you need the whistle, trade it for another. Without knowing how much air it flows, there is no way to tell if its "better" than any other.

 

[chemicaljohn]

Does this go with another motor? Seems to work fine for me. Would like to get a C for the sound.

 

[dm22630]

It is a turbo from a LDS-427

Here are pics of a C, D, & LDS turbo....

 

[gimpyrobb]

Thats what I thought.

 

[Fat Jack]

Reading this thread made me wonder if any of you have ever listened to the GL blurb about turbo's. There's a link on their web site to a podcast that says there's virtually no difference between the multi-fuel diesel engine without a turbo and one with the turbo. They claim that uncle sam put the turbo on so that the engine burns cleaner. I have no idea whether their assertion is accurate, but like you all, I love the sound of my whistler.

 

[chemicaljohn]

And the 427 is what was on A1's?

 

[gimpyrobb]

Fatjack, you are right about the army's use. The guys here will bump up the fuel and the turbo does make a big difference when you do that.

 

[dm22630]

And the 427 is what was on A1's?

Some M35A2s have them.......it is a more powerful multifuel engine. It is the same multifuel engine that is in all the 5 ton multifuel trucks.

 

[gimpyrobb]

No, the 427 is NOT in the 5 tons

Its an early version of the ldt