Cooling System Teaser for the Experts
06-22-2010, 01:35 PM
#31
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I believe it did, but we had other issues, and have replaced everything (rebuilt engine) since then.
Heater valve is probably original...seems to work, havent seen it leak either. Been turning the heater on with the windows down (105F outside) the last few days; that **** gets old real fast!
Heater valve is probably original...seems to work, havent seen it leak either. Been turning the heater on with the windows down (105F outside) the last few days; that **** gets old real fast!
I'm starting to think it might be the griffin. The second GB didn't go well, as I recall.
06-22-2010, 01:39 PM
#33
Burning Brakes
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Right, well since the condenser is in front of the radiator the AC will be Fine but the Radiator is lacking cooling flow.
06-22-2010, 01:55 PM
#34
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This may be a silly question, but I have never seen the fan on the 944's. Is it metal or plastic? We had a lot of our built hot cars and pulling trucks that went to high volume plastic fans. The fans flattened out under load and did not pull any air. If we have metal fans this would not be an issue.
06-22-2010, 02:00 PM
#35
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This may be a silly question, but I have never seen the fan on the 944's. Is it metal or plastic? We had a lot of our built hot cars and pulling trucks that went to high volume plastic fans. The fans flattened out under load and did not pull any air. If we have metal fans this would not be an issue.
06-22-2010, 02:06 PM
#36
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Has anyone else had issues with their Griffin radiators? I would hate to buy a new stock radiator just to troubleshoot...but at this point, its that, or an LS1
06-22-2010, 02:10 PM
#37
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pull the radiator and check it for blockages. A number of folks talked of the sloppy welding that was done on the second run of the GB. I had one, that I never installed, that actually had a puncture, which I didn't know about until I sold it. We got things worked out on the deal, but I KNOW that radiator had never been damaged by me. It was from the factory like that.
If that can happen, then what might be going on in the radiator?
If that can happen, then what might be going on in the radiator?
06-22-2010, 02:11 PM
#38
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06-22-2010, 02:18 PM
#39
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You mentioned that when the car is stopped and comes back down to normal temp, bringing the RPM to 3500 will quickly bring the temp back up. I think this would eliminate "load" as the enemy. The fact that it cools fine at idle leads me to believe the radiator is OK.
My money is on a collapsed rad hose.
My money is on a collapsed rad hose.
06-22-2010, 02:22 PM
#40
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You mentioned that when the car is stopped and comes back down to normal temp, bringing the RPM to 3500 will quickly bring the temp back up. I think this would eliminate "load" as the enemy. The fact that it cools fine at idle leads me to believe the radiator is OK.
My money is on a collapsed rad hose.
My money is on a collapsed rad hose.
06-22-2010, 02:23 PM
#41
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You mentioned that when the car is stopped and comes back down to normal temp, bringing the RPM to 3500 will quickly bring the temp back up. I think this would eliminate "load" as the enemy. The fact that it cools fine at idle leads me to believe the radiator is OK.
My money is on a collapsed rad hose.
My money is on a collapsed rad hose.
06-22-2010, 02:28 PM
#42
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You mentioned that when the car is stopped and comes back down to normal temp, bringing the RPM to 3500 will quickly bring the temp back up. I think this would eliminate "load" as the enemy. The fact that it cools fine at idle leads me to believe the radiator is OK.
My money is on a collapsed rad hose.
My money is on a collapsed rad hose.
That thought has crossed my mind. I have checked them when cold/warm, and they feel fine. All hoses were replaced when we built the motor, and they appear to be in great shape. Does anybody know if either radiator hose should have a coil spring inside of it? Mine do not.
After reviewing the diagram on Clarks Garage, the flow goes from bottom to top...so it could be either hose.
Last edited by Got Me a Porsha; 06-22-2010 at 02:37 PM. Reason: Thinking...
06-22-2010, 02:34 PM
#43
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If you have someone around, have them run the RPM up while you watch the hose. This is prolly a stupid question, but did you replace the cap when you got the new rad? I'm guessing it came with one...
06-22-2010, 02:36 PM
#44
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Yep usually lower radiator hoses collapsing causes that issue. One more thing what about your exhaust, is there any restrictions such has collapsed downpipe?
06-22-2010, 02:37 PM
#45
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Well you could rev the Engine from the engine bay and check the hose from the top.