Turbo exhaust routing

[One_Ton_k5]

This is a dumb question but: How is the exhaust routed on a turbo diesel?

I looked at some pictures I found on the web and it looks to me like the driver side manifold is piped into the pass side manifold and all the exhaust is routed through the turbo.

Is that right? That seems like a lot of exhaust to put through the turbo.

Or did I see it wrong?

Thanks.

 

[diaric]

thats how it works, you want all the pressure possible to spin the turbo and wind it up

 

[One_Ton_k5]

Oh, ok. That's what it looked like but I wasn't sure.

Thanks.

How many of you guys are running mufflers? I was thinking of a single 4" right off the turbo and straight out.

I'd like the truck to have a mellow sound without the ear splitting clacking some diesels have. More like a smooth big rig sound if that makes any sense.

Thanks.

 

[tRustyK5]

My brother in law has a '97 Chev 4x4 with a 6.5 TD. He runs a 3" pipe off the turbo, and all the way to the rear corner of the truck...no muffler at all.

At idle standing behind his truck it has an awesome exhaust note with a bit of turbo noise (slight whine)...and when driving it it has a good throaty but not annoying sound. Sounds like healthy dual exhaust with turbo whine mixed in.

When I add the turbo to my 6.2 I'm gonna run 3" straight pipe off the turbo as well.

Rene

 

[One_Ton_k5]

Do most turbo diesels have mufflers? I've seen some thread that mention the soot pluggin them up over time, any special mufflers required? Or that I should stay away from?

Like I said, I'd like it to be as quiet as possible without causing flow issues.

Would a 3" be better than a 4"? I know that a larger pipe has a lower flow rate and that sometimes causes complications with things. Do turbo chargers need some back-pressure to operate consistently, or is less back-pressure better than more?

Catalytic converter?

Thanks.

 

[diaric]

turbos diesels can run with no back pressure. there for 4 will work better than 3. the more you can flow the better your power will be. they come with mufflers from the factory, so if you want it quieter, by all means do so, but something that flows easy will give you better results, otherwise going to big exhaust won't be very usefull.

 

[Russell]

Yep, the more air you can cram through em, the more power you make. I plan on running a 3.5" straight pipe out behind the rear wheel at 45 degrees. I've been in several of these diesels run straight piped, and they are not loud at all. The engine's rattling still overpowers the exhaust much of the time. They do drone a bit on the highway though.

If you want it quiet, just run the exhaust from a 6.5L