dmax LMM tailpipe

[Signal73]

I see the ford has a fluted design to cool exhaust gasses before they exit also. The only 6. 7 CTD i seen had a regular tailpipe. are the gasses on the CTD cooler then f+c?



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[WDixon27]

saw one on a ford the other day and not only was it huge but hideous, looked like elmer fudd's shotgun after bugs jam'd a carrot in it, didn't have time to snap a pic unfortunatly

 

[abrankod]

What you're looking at in the above gm stock photo is not a cooler, but a venturi style exhaust ejector. Right where the venturi is welded on, you can see the exhaust neck down to increase velocity & pressure. This induces ambient air into the venturi and increases the flow outwards.

They are probably using this device to decrease sooting on the rear quarter and tailgates of the vehicles by shooting the smoke farther away. However, as we've all learnt in school physics class; there's no such thing as a free lunch. Less sooting at the cost of a necked down exhaust... Not a winning proposition in my mind.

-Dan

 

[abrankod]

Oh btw, if you DO want one, Donaldson sells several models in 3-6" exhaust pipe diameters. Search their online catalog for P/Ns.

-Dan

 

[Signal73]

From whats been stated on Ford+Chev sites the injected air is used to cool the exhaust because when the truck goes into re-generation mode for the DPF, the result is a very hot exhaust gas.