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Just another DuraMax swap
Author: hal (Show all albums)

Converting 669 to an oil burner.
Show Newest Photos First | Show Oldest Photos First223 Photos - Page : [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]


Got the oil fill, main radiator surge tank, inter cooler radiator surge tank and dipstick all accessed through the OEM radiator fill port. Tight but nice to be able to reach everything standing outside. The dipstick was a bit of a challenge. I used speedometer cable (old school stuff) and was able to modify an old dipstick handle and the end of its tube. Getting the length just right took a bit of patience.


Here are the batteries, 206AH Lithium. Their size made it necessary to load them from the bottom. The door on top was just too small and more work to modify than dropping them down and out.


I had to modify the coach battery box to accommodate the batteries I'm using. I ended up adding about 2 1/2" to the depth and also made the bottom removable.


Looks like a hose farm. Tough to keep it neat and organized.


Finished the heat shield for the mufler and got the water pump plumbed in for the inter cooler radiator.


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Here is a view of the water valves for the heaters and water heater heat exchanger. I wanted to be able to isolate any one or all of them 'just in case'. I know, overkill.


The radiator pressure/fill tank mounted with good access. This tank was used on the mid duty trucks with the DMax so should have the required capacity.


Here's a look at the CAC radiator fan shroud and partial heat shield to the right. The fuel pump, pressure regulator and primary fuel filter are mounted on the firewall.


I made the shroud two piece for ease of service later if needed ("if needed", RIGHT!)


Hear's a look at the fan shroud. The shroud is unusual as the shroud surrounds a second shroud that is attached to the engine which has a flexible gasket between the two. It permits the engine to move inside the main large shroud but maintains perfect blade tip to shroud distance. GM used this approach on their Duramax engines. This one was used on the 25" fans on later(2011-2016) engines


I ended up moving the aux trans cooler to this location. It will be the primary fluid cooling heat exchanger then go through a pair of water to oil coolers.


Got the fans mounted for the CAC radiator. These were used on 1995 VW Sciracco's as is the radiator. Unusual in that the main two speed fan, belt drives the secondary fan. The high speed will be trigered using a thermo switch that comes on at 140, off at 125.
Show Newest Photos First | Show Oldest Photos First223 Photos - Page : [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]

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