View Single Post
Old 08-09-2017, 01:56 PM   #36 (permalink)
Master EcoModder
gumby79's Avatar
Join Date: Dec 2014
Location: Butte, Montana
Posts: 691

little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 24 AUTO
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 20.23 mpg (US)
Thanks: 199
Thanked 396 Times in 257 Posts
Galvanic action

Adding brass/copper to your systom could cause a corrosion problem. Theas 2 meterals were removed from the cooling system with the introduction of Al rad. It took the manufacturers a few years to figure it out . How ling wi it take to decime a problem? Dono... 3 years on my '79K-20 with a 4core Al rad. and copper/brass heater core no coolent related trouble.
An idea to make your sealed chamber.
Braze up your shape (3sides 4th is the trans case). Use some gas tank sealer epoxy.
This will remove the air/water tight requirements, making your welds structural only reducing the likelihood of a contamination leek. Oil has soked into the metal and will surface when heated.
add a trans temp Gage.
Add codes for cooling function, to allow lower oil weight without the threat of over heat failure in summer.
Not enough rum time to justify this mod???
Add a pump .
Im shure thar you have already exploited the low hanging fruit (block heater). With a relatively short commute lack of heat bulid up is what your trying to fight. Set the circ pump to come on after the motor is warmed(on the plug)
Alternative to a jacketed heater.
Use a tube/fin or stacked plate type cooler were you want the jacket then insolate . Option to improve heat transfer fill the fins with Al chips/shavings/ powder improving the contact patch with the cooler and trans case as air space only transfer IR heat (slower)

Well enough ideas for now.

Dream Big Chisel Down To Reality
1st gen cummins 91.5 dodge d250 ,HX35W/12
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 29.3mpg 97mi 3.311usg 7/27/16

'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg

  Reply With Quote