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Old 04-04-2011, 08:13 PM   #51 (permalink)
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a bunch of mud trucks before me have done it.... i think it'll be fine. we'll see i guess.
You think 1" will be fine? Me n my buddy were talking about it and idk if that is big enough...

Your thoughts?
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Old 04-04-2011, 08:27 PM   #52 (permalink)
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i used 1 1/2" .... it's basically the same size as all my radiator hoses, which made things easy.
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Old 04-05-2011, 09:08 PM   #53 (permalink)
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i used 1 1/2" .... it's basically the same size as all my radiator hoses, which made things easy.
Yea, that's another thing I was thinking about. I would have to get all kinds of adapters and b.s.

I'm gunna talk to my pops tomorrow and see if he can grab me some scrap 1 1/2 from work just so I can be safe. All my hoses are 1.5" also.
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Old 04-06-2011, 01:37 PM   #54 (permalink)
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I run 1.5" EMT (galvanized) in my toyota for about a year now with no ill effects. I havent torn down the motor (probably never will), but it still runs the exact same way it did when I moved the radiator to the bed. I used 1.5" agricultural sprayer hose and 1.5" flexible radiator hose for all of the solf connections. No leaks as of yet using double worm-gear hose clamps from Lowes.

Stock GM 4.3L radiator w/ ford taurus fan, keeps it cool all day long. Almost too cool.



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Old 04-06-2011, 09:43 PM   #55 (permalink)
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Well unfortunately I won't be joining the galvanized guys. lol
I called the ol man today and he hooked me up with 2 sticks of 1.5" aluminum conduit.
I'll post detailed pics once we're done.

But I got a question, all these guys are running petcocks on there thermostat housing, so could just drill a hole in my lower intake and tap it for a petcock? Right at the thermostat housing?
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Old 04-14-2011, 06:53 PM   #56 (permalink)
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I was wondering what aluminum tube I could use to run from the front to the back that I can bend, the local supplier said his usual is aircraft grade and will crack instead of bend.
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Old 04-15-2011, 04:40 AM   #57 (permalink)
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When I had my truck I cut up a trampoline frame and used that for the piping. It worked great.
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Old 04-17-2011, 10:39 AM   #58 (permalink)
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I was wondering what aluminum tube I could use to run from the front to the back that I can bend, the local supplier said his usual is aircraft grade and will crack instead of bend.
I'm using aluminum conduit. That can be bent. I'm not sure of any other terms for it, I just know it as conduit. It's industrial grade aluminum pipe that electricians run wire through. Maybe check an industrial supply store?? Or electrical supply store.
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Old 05-18-2011, 08:56 PM   #59 (permalink)
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Alright, back to the top. We have built the fugly bracket that will hold the radiator. (I hate it, the radiator will eventually be mounted on rear roll bars, but for now this will have to suffice.) Have the pipe ran down the frame rails also, now I am just looking at my options to get the coolant from the motor/radiator to the pipe. I am thinking about going to the junkyard and cutting a bunch of elbows off of radiator hoses and running a neat and clean system down there. But I would like to see where you guys are getting the nice looking clear braided hose that I have seen before.(I think it is for pool pumps??? Not sure...) If that isnt too pricey I may go that route. Or if anyone has any other alternatives that are decent prices let me know what it is and where the hell to get it at. Thanks fella's.
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Old 08-05-2011, 06:31 PM   #60 (permalink)
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Some one here said they used 1.5" piping with rubber elbows but I cant find it now...

Where did you or would you get rubber elbows?
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Old 08-09-2011, 12:54 PM   #61 (permalink)
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I'm running through the frame on mine. The thing I am worried about is I'm going to go into the frame at the mid point. I'm wondering what the water on the other side is going to do.
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Old 08-16-2011, 10:11 AM   #62 (permalink)
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That was why I shied away from doing my frame as the coolant lines, what about a rubber hose in the frame rail? I might change mine up like that.

To add to the thread. I have a 3.8 v6 in a samurai. Rear radiator. 1 3/8 rubber hose, gutted thermostat and a Taurus fan. The radiator is a stock mustang radiator. It runs 150-160*
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Old 08-16-2011, 10:47 AM   #63 (permalink)
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Well Andy it would take a 1lb out of your 5lb bag lol. I was impressed by how well GZ did. looks like you had fun.
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Old 08-21-2019, 09:54 AM   #64 (permalink)
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Bump for a good thread that's been sleeping too long.

I've spent at least 100 hours in the last few weeks reading threads like this, here are some good reads that I found on this site.

Theory and Discussion:
https://www.pirate4x4.com/forum/suzu...-radiator.html

https://www.pirate4x4.com/forum/gene...-radiator.html

https://www.pirate4x4.com/forum/gene...-pro-cons.html

https://www.pirate4x4.com/forum/gene...-plumbing.html

https://www.pirate4x4.com/forum/gene...nt-ultra4.html

https://www.pirate4x4.com/forum/jeep...radiators.html

https://www.pirate4x4.com/forum/gene...ator-pics.html

Troubleshooting:
https://www.pirate4x4.com/forum/gene...flow-woes.html

https://www.pirate4x4.com/forum/gene...-radiator.html

https://www.pirate4x4.com/forum/gene...questions.html

After reading all these threads it seems like the common advise can be boiled down to a general list of "best practices":
  • Try to mount the radiator at the same or similar elevation as the water pump
  • Keep your hose and pipe runs and distance from the water pump to a minimum
  • Getting rid of trapt air is key! Have bleed valves and/or radiator caps high in the system
  • Common size for tubing/piping is 1.5" galvanized or aluminum
  • Ensure that your return (suction) port to the water pump is the low port on the radiator
  • Shroud your radiator and have a good fan or set of fans that are preferably automated via the computer or a temp sensing switch

Anyone else have advise to add?

Last edited by OldMan57; 08-21-2019 at 09:55 AM.
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Old 08-21-2019, 09:47 PM   #65 (permalink)
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I'm not about to read all those links

just cuz your radiator has 1 1/2 inch tubing.. doesn't mean it is good enough.. sure use 1 1/2 at the radiator, but get atleast 2 inch running from the front to the back.. the system should perform better with less restriction..
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Old 08-22-2019, 11:15 AM   #66 (permalink)
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I'm not about to read all those links

just cuz your radiator has 1 1/2 inch tubing.. doesn't mean it is good enough.. sure use 1 1/2 at the radiator, but get atleast 2 inch running from the front to the back.. the system should perform better with less restriction..
Interesting comment. What about at least matching the inlet/outlet sizes of the radiator?

For example, here is my Summit universal 31x19 radiator.
https://www.summitracing.com/parts/sum-381331/overview/

1.5" inlet and 1.75" outlet sizes on the radiator, perhaps to assist the water pump in having access to greater volume of coolant when pulling in coolant.
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