DIY coolant by-pass?

Using info from others and doing a lot of reading...I came up with my own parts list and started this thread :
http://competitiondiesel.com/forums/showthread.php?t=51103

I did decide to weld a bung onto the t-stat housing instead of tapping it though. I just couldn't trust a 14 tpi tap in a housing that thin that was curved to boot..it's a recipe for leaks.

The housing is cast though....make sure to use a high nickle rod and pre-heat everything if you elect to weld it.
 
UNBROKEN said:
Using info from others and doing a lot of reading...I came up with my own parts list and started this thread :
http://competitiondiesel.com/forums/showthread.php?t=51103

I did decide to weld a bung onto the t-stat housing instead of tapping it though. I just couldn't trust a 14 tpi tap in a housing that thin that was curved to boot..it's a recipe for leaks.

The housing is cast though....make sure to use a high nickle rod and pre-heat everything if you elect to weld it.
Click to expand...

I just did mine close to the rad. hose, it was thicker there and got 3 threads tapped. Screwed in my 1/2'' AN adapt. and I feel confident with no leaks (over 100 miles now).
 
Last year I ran a back plate with a 90* and dumped it into the heater core line with no type of regulator or pressure valve with no problems.
Brandon
 
also.. could a person just run a smaller hose... so it can dain.. like 1/4 hose.. and just leave it open all the time... what you guys think..
 
cummins724 said:
Our trucks have Radiator caps rated at 16psi. I would think that you will want a relief that is rated to blow off at 17-18psi.

I adjusted my relief valve to open right after my thermostat opens.

When I first adjusted it, my truck wouldn't go over 140* driving down the road. That tells me that the relief valve is opening up to early, meaning that it was adjusted to less than rad cap pop off pressure.
Click to expand...

i thought relief valves operated on pressure and t-stats on temp?

and what does rad cap pop press have to do with this?

thanks, don
 
why wouldnt these work Flex-a-lite 32084 Radiator Hose Adapter, Aluminum, Blacork.... e-bay item #Item number: 370192112717
 
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