Thread: Radiator Repair
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Old 02-17-08, 08:18 PM   #13 (permalink)
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swede30
Jim Dewar
United States
 
Join Date: Apr 2004
Location: NC USA
GT40: RF 103
Posts: 170
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Re: Radiator Repair

MY NIGHTMARE CONTINUES!! I replaced my radiator with an RCR which worked very nicely.
I have driven approximately 300 miles in the last 2 weeks and yesterday I returned from a 100 mile trip to find drops of coolant coming from the radiator again! I looked at the radiator and once again the drops were forming at the core where the tubes enter the epoxy ends.
The original radiator lasted 3,000 miles, not 300!!!!!!!! I checked for (electrolysis) stray voltage and the level is below .1VDC which I read as o/k, I hope. I have a bypass hose from the radiator to the expansion tank(standard on RF). I have all standard RF components which should be o/k, as I don't hear complants like this from other owners.
I do have a strange problem with hunting engine temperature (I have replaced the thermostat 2 times 180*f). It hunts from 180*f to 150*f and back again as long as I am moving at a reasonable speed (I can Idle as long as I wish).
Today I performed a cooling system combustion gas test which was O/K!! I thought maybe to much pressure in the cooling system (headgasket leak pressurizing cooling system), but wouldn't the 13lb. expansion cap relieve this problem?
I also installed a 3/4" restrictor washer at the radiator inlet and it didn't change the unstable temperature (this has been occuring since the car was 1st driven 4,500 miles ago). HELP!!!!!!!!!!!!!!!!!!
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Jim Dewar

RF #103
C2 997 S
K 1200 GT
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