Recommendations for a hot day |
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Recommendations for a hot day |
Grosbard |
Jul 19 2019, 07:39 PM
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#1
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Member Group: Members Posts: 88 Joined: 29-September 09 From: Pasadena, CA Member No.: 10,862 Region Association: Southern California |
Hi all,
Temperatures here will be 100 degrees this weekend. I'm planning a drive tomorrow, so I would like to ask you guys for recommendations for keeping the engine from getting too hot. i.e. Not improvements to make for the future (I have a plan for that already), but just tips and suggestions to improve things for tomorrow. 1. My thought is as long as I'm willing to pull over at a rest area whenever the temperatures get high, and turn the car off and let it rest for 20 minutes or so, I'm thinking I should be fine. Am I correct in saying that or is 20 minutes not nearly enough for getting temps down an appreciable amount? 2. What would you say is the ideal RPM for max cooling? On the highways here, I can sometimes get as low as 2400 RPM in 5th gear while driving the speed limit. I suspect that 2400 RPM is too low for optimum fan cooling - although it also generates less heat than a higher RPM, so the question is where is the tradeoff optimal point of RPM. Thanks in advance! |
mepstein |
Jul 19 2019, 07:50 PM
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#2
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914-6 GT in waiting Group: Members Posts: 19,507 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
3-3.5K. If you are falling below 3k, shift to 4th. Unless you are going downhill.
I wouldn’t stop and pull over. Car will heat soak and may be hard to start. |
Grosbard |
Jul 19 2019, 07:50 PM
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#3
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Member Group: Members Posts: 88 Joined: 29-September 09 From: Pasadena, CA Member No.: 10,862 Region Association: Southern California |
It is a 2 Liter with Webers - I forgot to mention that.
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Grosbard |
Jul 19 2019, 07:53 PM
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#4
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Member Group: Members Posts: 88 Joined: 29-September 09 From: Pasadena, CA Member No.: 10,862 Region Association: Southern California |
3-3.5K. If you are falling below 3k, shift to 4th. I wouldn’t stop and pull over. Car will heat soak and may be hard to start. @mepstein I forgot to mention, one major thing I'm worried about is traffic getting very heavy which means I could be stuck in stop and go traffic for 30 minutes or so. I'm thinking in this case pulling over is the right solution. Do you agree? |
mepstein |
Jul 19 2019, 08:05 PM
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#5
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914-6 GT in waiting Group: Members Posts: 19,507 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
Tough call. It will be easier to decide if you have a temp gauge. My advice, if you can, leave as early as possible and bring a chest of cold water to keep yourself cool and hydrated and sunscreen.
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jim_hoyland |
Jul 19 2019, 08:21 PM
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#6
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Get that VIN ? Group: Members Posts: 9,410 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
I drive at the speed limit instead of +10 or +15 ovet and sometimes a little less, temp drops back.Highest temps occur in stop/go traffic.
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michael7810 |
Jul 19 2019, 09:16 PM
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#7
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Senior Member Group: Members Posts: 1,082 Joined: 6-June 11 From: Scottsdale, AZ Member No.: 13,164 Region Association: Southwest Region |
I have a good amount of experience driving in 100+ temps. My car (1911 cc w/Webers) runs normal temps (oil 220F heads 325-350F) up to about 65mph cruises. Above 65 or in the mountains the head temp creeps up. Once the heads exceed 350 I keep the revs around 4000 and that keeps them from exceeding 375. On prolonged periods above 4000 the oil temp starts to creep up. At that point I will slow down a bit or be sure to lower rpm on the flats or downhills to lower oil temp without raising head temp. Having both head and oil temp gauges is critical IMO.
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VegasRacer |
Jul 19 2019, 10:20 PM
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#8
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ELVIRA Group: Benefactors Posts: 8,624 Joined: 27-March 03 From: Between Scylla and Charybdis Member No.: 481 Region Association: None |
Remember, our cars are Air Cooled. Keep moving and keep the rpms in the 3 - 3.5 k range, and you will be fine.
Stopping for 20 min in 100+ temps will not do much to cool things off. (And it might cause restart problems. ) You will need more than an hour for any significant drop. 30 min of stop and go is no big deal. Trust me. It will bother us humans more than it does the car. BTW - Check your Tires and Happy Motoring. (IMG:style_emoticons/default/smile.gif) |
carr914 |
Jul 20 2019, 06:11 AM
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#9
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Racer from Birth Group: Members Posts: 120,933 Joined: 2-February 04 From: Tampa,FL Member No.: 1,623 Region Association: South East States |
if it gets a little warm inside the cabin
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mlindner |
Jul 20 2019, 06:59 AM
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#10
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Senior Member Group: Members Posts: 1,556 Joined: 11-November 11 From: Merrimac, WI Member No.: 13,770 Region Association: Upper MidWest |
For future, the Floor Pan Air Deflectors.....helps pull more are through the engine compartment at speed. Best, Mark
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mepstein |
Jul 20 2019, 08:27 AM
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#11
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914-6 GT in waiting Group: Members Posts: 19,507 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
The challenge on the New England corridor is stop and go traffic. I drive to Maine a lot to see my daughter. It could take 8 hours, it could take 12. Driving south to visit my son in NC, it's always 8 hours.
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