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02-08-2018, 01:33 AM | #1 |
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Location: Southwest Michigan
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How far at 50 MPH
I have been thinking about taking my 1930 Tudor on a trip that will require me to maintain 48-50 MPH on smooth level roads for about 40 miles each way. I have only had the car since last year and believe it is basically stock, but it seems to run well at 50 MPH. I regularly drive the car 9 miles to work and 4+ of those miles are at 50 MPH and it seems happy.
With 3.78 gears it will be running 2100 RPM for 40 miles each way and I was wondering how much strain that would be for the engine. I run full synthetic 10-40 oil that I change every 500 miles. What do you think?? |
02-08-2018, 02:02 AM | #2 |
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Join Date: May 2010
Location: Young Harris, GA
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Re: How far at 50 MPH
No problem at all doing this.
Watch coolant temperature. Advance the spark timing a click or two at the higher speed.
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Jim Cannon Former MAFCA Technical Director "Have a Model A day!" |
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02-08-2018, 02:18 AM | #3 | |
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Re: How far at 50 MPH
Quote:
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02-08-2018, 02:39 AM | #4 | |
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Location: Calgary, Alberta Canada
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Re: How far at 50 MPH
Quote:
I take my stock 29 Tudor on many 60 -100 mile trips, I like to cruise at 45-48 miles/hr .. I carry a extra couple fuses, fan belt and a few basic screwdriver and wrench’s ... never used them but they are there .. take your time and avoid freeways !! Sent from my iPhone using Tapatalk |
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02-08-2018, 02:44 AM | #5 |
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Location: Melbourne, Australia
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Re: How far at 50 MPH
Too fast in a car with stack engine without an over drive if you want to keep the middle main bearing. It will do it for a while but.......
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02-08-2018, 06:06 AM | #6 |
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Re: How far at 50 MPH
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My rebuilt engine with balanced crankshaft and stock rear end just eats up 50 mph with no vibrations or apparent engine strain. I also use Mobil One and change it every 500 miles. What's another 20 minutes and $25 a few times a year to feel best about your car. |
02-08-2018, 08:40 AM | #7 | |
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Location: Connecticut Shoreline
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Re: How far at 50 MPH
Quote:
However, I would also ask about the rest of your cars running gear. Is the following rebuilt up to specs, front end, springs, shocks, BRAKES! Blow an engine and you just end up on the side of the road. Other things happening could put you in a different place. Enjoy. |
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02-08-2018, 09:47 AM | #8 |
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Re: How far at 50 MPH
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02-08-2018, 09:55 AM | #9 |
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Re: How far at 50 MPH
I have run from Long Island, New York to Northport, Maine and back cruising at 60 mph with a stock 3.78:1 differential, stock transmission, no overdrive, stock 19" wheels and babbitt bearings. My 1931 Coupe has been running at 55 to 65 mph sustained on the interstates and highways for almost 50,000 miles!
Full synthetic motor oil has been used in my Coupe since it became available. I change the oil once per year, and I do not use any oil additives.
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02-08-2018, 10:40 AM | #10 |
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Re: How far at 50 MPH
I cruise at 50 mph on good roads .I have cruised at 50 fou many years and have never hurt any of my engines . They all seem to like this speed and cruise with comfort . I run 3.78 gears and run the original proper size wheels and tires on all but 1 . Some run 5.9 heads but no major mods . I use Walmart 20w50 oil that is made by Mobil and sold at a lower price . I feel that it is unsafe to drive at speeds less than 50 mph on the main roads . Not for the sake of disagreement but I would drive mine at 50 mph as far as I needed to go as long as the roads permit .
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02-08-2018, 11:20 AM | #11 | |
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Location: N. GA
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Re: How far at 50 MPH
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TerryO |
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02-08-2018, 11:45 AM | #12 |
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Join Date: Jul 2016
Location: Chattanooga, TN
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Re: How far at 50 MPH
I thought my car was cruising happy between 40-45, but turns our my speedometer is way off. The car was cruising along between 50-55. Didn't seem to be straining.
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02-08-2018, 12:37 PM | #13 |
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Join Date: Jul 2011
Location: Redondo Beach, CA
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Re: How far at 50 MPH
Haha, Mine too. I was surprised when I had my GPS in the car one day and it showed 45mph and the speedo read ~38mph. Faster I went, the farther off it became.
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02-08-2018, 12:42 PM | #14 |
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Join Date: Jul 2015
Location: SouthWest Michigan
Posts: 363
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Re: How far at 50 MPH
back in the day the car's were driven east coast to the west coast without any issues on roads a lot worse than we see Michigan
i doubt 40 miles will hurt it |
02-08-2018, 12:46 PM | #15 |
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Join Date: Jun 2010
Location: Temecula, CA
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Re: How far at 50 MPH
I agree with Purdy on oils, except I use Pep Bros 20-50. You are spending money on oil that doesn't need to be spent, especially if you change oil every 500 miles.
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02-08-2018, 01:00 PM | #16 | |
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Join Date: Mar 2017
Location: Connecticut Shoreline
Posts: 1,827
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Re: How far at 50 MPH
Quote:
Last time we had pan off, it was spotless. Change once a year. We do not drive car in winter. Enjoy. |
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02-08-2018, 01:16 PM | #17 |
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Join Date: Dec 2014
Location: Shawnee, Ok
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Re: How far at 50 MPH
I do it all the time, no problems...enjoy the trip.
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Keith Shawnee OK '31 SW 160-B |
02-08-2018, 01:22 PM | #18 |
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Re: How far at 50 MPH
I use Chevron Delo 20-50 that is meant for use in diesel engines. It is supposed to have better wearing characteristics than other non Delo oils. I buy my Chevron Delo at Costco. I like it. I change out the oil when it shows that the oil is getting dirty, which is usually between once or twice a year. I never let an oil change go beyond a year between changes. Of interest, with our 1931 model A pick up, we have 3.27 ratio rear end gears. Balanced, full pressure oil, 5 to 1 head, and the other needed upgrades have been done to the engine. As smooth as silk, I can run it up to 40 mph in second, before smoothly shifting into third. It doesn't behave like a model A at all. All I can say is Wow! 50 MPH for ever would not be a challenge at all for this pick up.
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02-08-2018, 05:26 PM | #19 |
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Join Date: Jun 2010
Location: Polk City, Iowa
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Re: How far at 50 MPH
My thinking is that 50 mph is better for engine at cruise than 40 mph cruise. Very smooth running at 50 and you won't be lugging it. That is only 2200 rpm which is the 40 hp rpm.
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Steve Hanna, Polk City, IA |
02-08-2018, 07:25 PM | #20 | |
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Location: St Charles , Missouri
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Re: How far at 50 MPH
Quote:
Agree with Purdy, 48-52 is good cruising speed all day long. I've taken many road trips without issue. If your cooling system and engine are good you should have no problems. Larry |
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