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Re: Engine temp rises when I get to cruise speed Quote:
I don't drive my car when it's about 80 degrees outside, Usually just an hour ride on Sunday mornings with my daughter. She's special needs and absolutely LOVES the sound and feel of the car she happily calls "Big Fat Bubba"!! Thank you Lee |
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Thanks KiWi |
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Thanks for letting us all feel like we are involved. Cheers Tony |
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Re: Engine temp rises when I get to cruise speed I mounted the fan and put everything back together last night.
I'm hoping to start the car and get testing later today. |
Re: Engine temp rises when I get to cruise speed OK so I started and drove the car today. I didn't get a lot of set time, but here's what I have.
81 degrees 45% humidity Party sunny 10% propylene glycol and 90% tap water Fan on, started car and let idle. About 3 minutes running & temp gauge went to 210* T-stats opened and temp dropped to 170* Heat gun showed 160* at top tank and 120* bottom tank Temp gauge in head showed 175* at water neck and 160* at water pump. I drove the back roads doing 20-30 and 30-40 mph for about 10 minutes and temp went to 180* Got on the high way and drove 50-65 for only 5 minutes and temp went to 190* Took back roads home and the temp stayed at 190* Pulled in the driveway and let it idle to get some readings I had 188* at top tank and 178* at bottom tank. Head gauge showed 195* and water pump gauge showed 185* This is definitely better than before! I used a cheap anemometer to get some air readings. If any of you have experience with an anemometer I'd like to know if I'm using properly and doing my calculations correctly I'm sure Lee would be able to help with the following numbers and procedure. The fan is a 16" puller Flex-a-lite Flex-wave #238 with 3000 advertised cfm. It's mounted close to the bottom of the top tank. I got a low reading of 1215 FPM and a high of 1929 FPM I converted FPM to CFM as I found on an online calculator. I used square inches for the fan area 16X16=256 square inches I chose this measurement, but I'm wondering if I should use the entire radiator square inches. I don't think that would be the way to go because the fan is not pulling over the entire radiator. I came up with 2146 cfm on the low end and 3407 cfm on the high end. This is through the radiator. Being that the advertised cfm is 3000, I doubt very much my numbers are correct. I could also try different wind measurements |
Re: Engine temp rises when I get to cruise speed You don’t mention the bottom front radiator pan. You had previously agreed to install it but never followed up on that.
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Re: Engine temp rises when I get to cruise speed Can you shut the electric fan off while driving over 35mph?
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Re: Engine temp rises when I get to cruise speed Wonder how much the lower grille pan on a '35 does as it pretty much all slots?
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Not to dissuade you as I myself find all this super interesting as an engineer, but you’re really getting into borderline engineering testing/prototyping, which then needs to be done IAW accepted standards if you really are determined to measure absolute airflow values. |
Re: Engine temp rises when I get to cruise speed Seems like things are moving forward. That's good. Even if it doesn't work.
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I guess what I'm trying to do is not useful info if it's not complete and done properly. Thanks Joe |
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