Exhaust Brake

[carl.swoyer]

Carl,

The LLY has a variable vane turbo on it. You can get a program to load into the ECM that will allow you to activate turbo brake. Below is a cut-n-paste from duramaxhub.com on the LLY specs...
[h=3]6.6L DURAMAX LLY SPECS[/h]

[FONT=&quot]Engine:[/FONT]	[FONT=&quot]6.6L Duramax LLY, 90 degree V8 diesel[/FONT]
[FONT=&quot]Years Produced:[/FONT]	[FONT=&quot]2004 - 2006[/FONT]
[FONT=&quot]VIN Code:[/FONT]	[FONT=&quot]2 (8th digit of VIN)[/FONT]
[FONT=&quot]Displacement:[/FONT]	[FONT=&quot]403 cubic inches, 6.6 liters[/FONT]
[FONT=&quot]Assembly Site:[/FONT]	[FONT=&quot]DMAX engine plant, Moraine, Ohio[/FONT]
[FONT=&quot]Head/Block Material:[/FONT]	[FONT=&quot]Aluminum cylinder heads, cast iron engine block[/FONT]
[FONT=&quot]Compression Ratio:[/FONT]	[FONT=&quot]17.5 : 1 (2004 & 2005 model years), 16.8 : 1 (2006 model year)[/FONT]
[FONT=&quot]Minimum Cylinder Pressure:[/FONT]	[FONT=&quot]300 psi (minimum compression test pressure)[/FONT]
[FONT=&quot]Firing Order:[/FONT]	[FONT=&quot]1-2-7-8-4-5-6-3[/FONT] [FONT=&quot] [/FONT]
[FONT=&quot]Bore:[/FONT]	[FONT=&quot]4.055" (103 mm)[/FONT]
[FONT=&quot]Stroke:[/FONT]	[FONT=&quot]3.897" (99 mm)[/FONT]
[FONT=&quot]Aspiration:[/FONT]	[FONT=&quot]Turbocharged and intercooled - Garrett GT3788VA variable vane turbocharger (VVT), air-to-air intercooler[/FONT]
[FONT=&quot]Injection:[/FONT]	[FONT=&quot]Direct injection, 23,000 (26,000 for 2006 MY) psi high pressure common rail with Bosch CP3 injection pump[/FONT]
[FONT=&quot]Valvetrain:[/FONT]	[FONT=&quot]OHV (overhead valve), 4 valves per cylinder[/FONT]
[FONT=&quot]Oil Capacity:[/FONT]	[FONT=&quot]10 quarts w/ filter[/FONT]
[FONT=&quot]Engine Weight:[/FONT]	[FONT=&quot]Approx. 835 lbs[/FONT]
[FONT=&quot]Idle Speed:[/FONT]	[FONT=&quot]~ 680 rpm[/FONT]
[FONT=&quot]Max Engine Speed:[/FONT]	[FONT=&quot]3,250 rpm (rev limiter)[/FONT]
[FONT=&quot]Emissions Equipment:[/FONT]	[FONT=&quot]Exhaust gas recirculation (EGR) and diesel oxidation catalyst (DOC)[/FONT]
[FONT=&quot]Peak Horsepower:[/FONT]	[FONT=&quot]310 hp @ 3,000 rpm[/FONT]
[FONT=&quot]Peak Torque:[/FONT]	[FONT=&quot]• 520 lb-ft @ 1,600 rpm (2004 & 2005 model years) • 605 lb-ft @ 1,600 rpm (2006 model year)[/FONT]
[FONT=&quot]Engine Dimensions:[/FONT]	[FONT=&quot]Length[/FONT]	[FONT=&quot]Width[/FONT]	[FONT=&quot]Height[/FONT]
[FONT=&quot]Approx 30"[/FONT]	[FONT=&quot]Approx 30"[/FONT]	[FONT=&quot]Approx 32"[/FONT]

This question would garner more responses if you posted it in a Duramax forum like dieseplace.com or duramaxforum.com.

Let us know what you find out and plan on implementing.

Good luck!

-Mark

Thanks Mark! That sounds like great news. I'll research it.

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[carl.swoyer]

Thanks Mark! That sounds like great news. I'll research it.

Sent from my XT1254 using Tapatalk

By the way Mark once I get the program to access the brake, how do I access it while driving?.

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[DMaxRocks]

By the way Mark once I get the program to access the brake, how do I access it while driving?.

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Carl,

I am not 100% sure, it depends on the manufacturer of the turbo brake. I believe some have a switch you can access the brake. I tried searching the dieselplace.com website for LLY turbo brakes but came up empty handed. However, I searched the duramaxforum.com and found a few, see below;

https://www.duramaxforum.com/forum/efi-live/156708-turbo-brake-lly-efi-live-dmt-atp.html
https://www.duramaxforum.com/forum/efi-live/620209-lly-turbo-brake.html
https://www.duramaxforum.com/forum/...arts-discussion/99731-fleece-turbo-brake.html

Good luck in your pursuit and let us know the outcome!

-Mark

 

[Lynn1130]

https://shop.bankspower.com/c-21-products-engine-brakes-electronic-brakes.html

this will give you a back ground on the electronic brakes. The LB7 needs the mechanical but engines after can be fitted with this type of system.