Overheating Bad Problem
#21
Retired Mech Design Engr
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But have you run the compression test yet? Or a leakdown would be even better.
Don't waste time with ancillary stuff when a likely, logical path has been outlined. I guess that's just what we do while we hope against hope.
Don't waste time with ancillary stuff when a likely, logical path has been outlined. I guess that's just what we do while we hope against hope.
Last edited by DNMakinson; 07-04-2017 at 05:04 PM. Reason: Leakdown
#22
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I think the real trick with the OEM fans and radiator is that they seal up amazingly well so every morsel of flow is forced to come through the radiator. I noticed when I first put on spals that by default they don't seal up the area between the fan and the radiator and they aren't exactly pressed up against it either. Unless you completely shroud off the area between the fans and the radiator, they will be almost completely useless no matter how powerful they are.
I riveted together a fan shroud out of aluminum sheet and aluminum 90 degree angle pieces (it's like an L that's 1" on each side) and I don't overheat even without the undertray. It was probably under 20 bucks in home depot parts and a few hours of elbow grease and it helped a bunch.
#25
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I know you guys like to focus on the fans, but once you're moving they really shouldn't add much cooling. With really good ducting I'm only running the smaller A/C fan and it only kicks on when sitting still. Fans aren't a substitute for good ducting.
With that said pretty sure OP has a major issue involving cooked engine parts.
With that said pretty sure OP has a major issue involving cooked engine parts.
#26
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I know you guys like to focus on the fans, but once you're moving they really shouldn't add much cooling. With really good ducting I'm only running the smaller A/C fan and it only kicks on when sitting still. Fans aren't a substitute for good ducting.
With that said pretty sure OP has a major issue involving cooked engine parts.
With that said pretty sure OP has a major issue involving cooked engine parts.
But i agree. OP has bigger problems.
#27
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One more data point about airflow. Literally the only good ducting I have installed right now is between the fans and the radiator and my coolant temps are usually EXACTLY at the fan activation temperature (90 C) unless it's raining or something. This proves to me that properly ducted fans help... but it also shows that without ducting/undertray, the fans are the only thing moving air through the radiator.
And yeah, I will put some quality ducting up front, I just haven't gotten around to it yet.
And yeah, I will put some quality ducting up front, I just haven't gotten around to it yet.