6.7 hood insulation
Post Fiend
Joined: Mar 2013
Posts: 5,929
Likes: 287
From: EC Iowa
Congrats on the new truck. None in mine either, they reduced the noise of the engine thru computer controlling the injection events before, during and after top dead center of the compression stroke plus a few other engineering marvels.
I believe the tech folder on 6.7 does an excellent job of explaining a few of them.
Enjoy!!
I believe the tech folder on 6.7 does an excellent job of explaining a few of them.
Enjoy!!
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
The gas trucks have the insulation, diesels do not.
I don't know why but I suspect it has much more to do with heat dissipation or retention. I don't think either gas or diesel needs that stuff for sound management, more to do with dealing with heat and ideal engine temps while driving.
I don't know why but I suspect it has much more to do with heat dissipation or retention. I don't think either gas or diesel needs that stuff for sound management, more to do with dealing with heat and ideal engine temps while driving.
Post Fiend
Joined: Mar 2013
Posts: 5,929
Likes: 287
From: EC Iowa
I know the 84 with 6.9 I have, still has a written statement to the effect that the insulation under hood and on firewall/dash was required to meet sound emissions, or some thing to that effect !
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Fleet Mechanic
Joined: Nov 2005
Posts: 1,899
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From: Upstate NY
My '06 V10 gasser didn't have hood insulation nor did either of the 5.4 gassers. As far as the '11 6.7, I like to listen to that little bit of diesel clatter (except when the weather is really cold/loud).
Fleet Mechanic
Joined: Jun 2009
Posts: 1,346
Likes: 4
From: Connecticut
This engine is so quiet I dont know why you would need any sound dampening from engine compartment.I bet it would still be just as loud with it.Which isnt very loud.I can barely tell its running sometimes.Which yrs ago I wouldve not liked but getting older I enjoy a quiet engine now.
But as stated above the 6.2 would prolly fit.
But as stated above the 6.2 would prolly fit.
Lead Driver
Joined: Dec 2013
Posts: 9,762
Likes: 115
This engine is so quiet I dont know why you would need any sound dampening from engine compartment.I bet it would still be just as loud with it.Which isnt very loud.I can barely tell its running sometimes.Which yrs ago I wouldve not liked but getting older I enjoy a quiet engine now.
But as stated above the 6.2 would prolly fit.
But as stated above the 6.2 would prolly fit.
Now if you were in a cold climate and it kept he engine bay warmer and you warmer as a result - I could see wanting it. But right now, the coldest it got at my house this past winter was +40F for a couple of days and it still hit +60F during the day.