GM Diesel Trucks & SUVs
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Transmission Control 4L80E
6.5 TD Performance Cool Air Intake
6.5 TD Turbo Downpipe
6.5 TD Intercooler
Headlight Light Switch Saver and Light Intensifier
Oil Pressure Switch Saver
Ignition Switch Saver
6.5 Stock Airbox
6.5 Stock Exhaust
Duramax 6600 Performance
The Magnus-Moss Warranty Act ______________
To remedy the cooling problems on the GM 6.5 Liter Turbo Diesel Engine I came up with an electric cooling fan setup back in 1995 to aid cooling and reduce the 'on time' of the engine driven fan and clutch. Living in South Florida at the time and towing a 30 foot boat in the summer caused my truck to run real hot so this was one of the first mods I made to the truck. The reason no kit yet is I am still trying to find a manufacturer that can make the fans to the needed specs and dimensions, and that will make us 100 units or less at a good price.
I have heard of a few people putting a different fan clutch on that engages earlier but this even though it helps cooling it robs power and typically engages when you need the power most going up hill or while loaded, and such a setup can cause some problems. Read the Aftermarket Fan Clutch WARNING. The dual fan setup I use allows the engine to cool delaying the engagement of the fan if not preventing need for it to all together.
On the 1997 cooling updates I get mixed reviews from people I hear from. I have a 1994 K3500 Crew Cab Dually 4x4 with stock cooling and will only be updating mine to see what changes the 1997 upgrades will make. I really have NO need to do so as my electric fans and water-mist injection keeps everything nicely at proper operating temps. Even with the fans off, the water-mist injection (WMI) keeps things cool but as an added it also reduces the IATs [intake air temps] and ECTs [engine coolant temps] low also reducing EGTs [exhaust gas temps]. We do offer the Dual Thermostat Cooling Upgrade parts as well if desired, but i only recommend the upgrade if you need a new water pump.
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of the truck
Downpipe Converter Test-Pipe
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