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Old 01-07-2008, 08:55 AM
  #46  
RSKY BIZ
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Originally Posted by Marine Blue
I also have one going into it's 5th year, no issues...knock on wood. Performance of mine is excellent with the car running cool in even the hottest weather....
'Ditto' for me! Going strong now for over five years between 'PO's and me'...

Coolest running ever! . . . so far!

Doc
Old 01-07-2008, 10:18 AM
  #47  
Giovanni
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Mine is a Devek rad as well and installed by Devek in 1999 or 2001, no issues yet!
Old 05-11-2010, 10:15 PM
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update: My Devek/Ron Davis Racing Radiator was leaking from all 4 corners.

here is what I learned after sending it back to Davis:

you CAN NOT weld it - the difference in metal thickness with the tubes and tank is too great. the tubes will melt before getting the ends hot enough.

it is a vacume sealed unit when built. the epoxy goes in the inside to help seal. apparently, its not a bulletproof design.

RD wants $1200.00 for a new unit. but why I'd want another unit from a firm that can't make one last 10k miles is beyond me. I'm crazy for sure, but not estupit.

I found a rad shop in Burbank that epoxied the OUTSIDE of all four corners. he does that for a lot of off road stuff that gets abused. he pressure tests and reworks it till it's leak free.

cost: $150.00 and it's solid as a tank. doesn't look bad either.

I don't think I'd try this on a 20 year old radiator, because the core is prolly full of so much debris it won't flow worth a hoot. but for anyone w/a newer unit that's leaking at the joints like the OP, it's fine, imho.

hope this helps.

Old 05-11-2010, 10:37 PM
  #49  
SeanR
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I've got a Devek one that I keep meaning to cut open and see if I can rebuild it. It also was leaking and I just replaced it with a used factory one with new end caps. I'm happy enough in the Texas heat the current one.
Old 05-12-2010, 01:44 PM
  #50  
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I kinda wonder if I really had to go w/a bigger unit on my car. I've seen a few blown and stroked cars w/stock radiators and haven't heard much about overheating
Old 05-12-2010, 01:54 PM
  #51  
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Originally Posted by 928SS
you CAN NOT weld it - the difference in metal thickness with the tubes and tank is too great. the tubes will melt before getting the ends hot enough.
Jeez, the OEM Behr unit can be welded. What did they use for the core, tin foil?
Old 05-12-2010, 02:08 PM
  #52  
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Originally Posted by Hacker-Pschorr
Jeez, the OEM Behr unit can be welded. What did they use for the core, tin foil?
it's the diff in metal thicknesses

.014" and .20" AL don't play nice with a TIG welder, apparently.

that's why RD used some kind of vacume forming process, and tried to use an epoxy internally.

so much for that design. the OEM unit looks pretty nice all of a sudden, lol

on the other hand, we can have a nice shiney AL rad - as long as we buy some JB Weld
Old 05-12-2010, 03:12 PM
  #53  
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Makes me wonder how Greg Brown's upcoming design will be held together? He says it will address the "issues" of the C & R, hopefully this is one of them.
Old 05-12-2010, 03:28 PM
  #54  
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Fitament is a big deal w/him, so I suspect it'll fit like a glove. In that respect the RD unit was pretty good.

if it doesn't last, I'm sure the vendor will end up with an AL suppository, hahaha
Old 05-12-2010, 03:42 PM
  #55  
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Originally Posted by 928SS
update: My Devek/Ron Davis Racing Radiator was leaking from all 4 corners.

here is what I learned after sending it back to Davis:

you CAN NOT weld it - the difference in metal thickness with the tubes and tank is too great. the tubes will melt before getting the ends hot enough.

it is a vacume sealed unit when built. the epoxy goes in the inside to help seal. apparently, its not a bulletproof design.

RD wants $1200.00 for a new unit. but why I'd want another unit from a firm that can't make one last 10k miles is beyond me. I'm crazy for sure, but not estupit.

I found a rad shop in Burbank that epoxied the OUTSIDE of all four corners. he does that for a lot of off road stuff that gets abused. he pressure tests and reworks it till it's leak free.

cost: $150.00 and it's solid as a tank. doesn't look bad either.

I don't think I'd try this on a 20 year old radiator, because the core is prolly full of so much debris it won't flow worth a hoot. but for anyone w/a newer unit that's leaking at the joints like the OP, it's fine, imho.

hope this helps.

You might want to look into the Muggyweld stuff that I used for my rear A/C evaporator. They make a couple of pretty good aluminum solders. The one I used melts at only 350F and is rated 20000 PSI. They also have another alloy that melts at 600F and is rated higher strength.

It's not cheap, but it is compared to the cost of a radiator, and it does what it says.
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Old 05-12-2010, 04:01 PM
  #56  
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Originally Posted by 928SS
Fitament is a big deal w/him, so I suspect it'll fit like a glove. In that respect the RD unit was pretty good.

if it doesn't last, I'm sure the vendor will end up with an AL suppository, hahaha
Fitment is important, yes, but I hope it is welded, not epoxied.
Old 05-12-2010, 04:38 PM
  #57  
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Originally Posted by SQLGuy
You might want to look into the Muggyweld stuff that I used for my rear A/C evaporator. They make a couple of pretty good aluminum solders. The one I used melts at only 350F and is rated 20000 PSI. They also have another alloy that melts at 600F and is rated higher strength.

It's not cheap, but it is compared to the cost of a radiator, and it does what it says.
saw that on a Honda forum. looks like a viable alternative
Old 05-12-2010, 08:09 PM
  #58  
Imo000
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Originally Posted by 928SS
update: My Devek/Ron Davis Racing Radiator was leaking from all 4 corners.

here is what I learned after sending it back to Davis:

you CAN NOT weld it - the difference in metal thickness with the tubes and tank is too great. the tubes will melt before getting the ends hot enough.

it is a vacume sealed unit when built. the epoxy goes in the inside to help seal. apparently, its not a bulletproof design.

RD wants $1200.00 for a new unit. but why I'd want another unit from a firm that can't make one last 10k miles is beyond me. I'm crazy for sure, but not estupit.

I found a rad shop in Burbank that epoxied the OUTSIDE of all four corners. he does that for a lot of off road stuff that gets abused. he pressure tests and reworks it till it's leak free.

cost: $150.00 and it's solid as a tank. doesn't look bad either.

I don't think I'd try this on a 20 year old radiator, because the core is prolly full of so much debris it won't flow worth a hoot. but for anyone w/a newer unit that's leaking at the joints like the OP, it's fine, imho.

hope this helps.

You would be suprised how clean a properly maintained 20yo radiator can be.
Old 05-12-2010, 10:19 PM
  #59  
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Originally Posted by Imo000
You would be suprised how clean a properly maintained 20yo radiator can be.
key words: properly maintained... a few here are probably.
Old 05-13-2010, 12:53 AM
  #60  
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Originally Posted by 928SS
key words: properly maintained... a few here are probably.
That's a big assumption. There is a better chance that most have weakenned end tanks but good cores.


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