Quote:
Quote:
The drums offer less drag/rolling resisteance. Maybe they are lighter too.
Discs weigh less.Calipers weigh more................
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| 30 mpg to Las Vegas ..... https://slantsix.org/forum/viewtopic.php?t=33017 |
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| Author: | bubs63Dart [ Sun Dec 28, 2008 10:31 am ] |
| Post subject: | 30 mpg to Las Vegas ..... |
I just drove my 63 Dart to Las Vegas from Los Angeles while it's not my first distance drive with the car it is the first with the new tires. For the record I'm totally blown away and thoroughly pleased that I got 30 mpg and here's what I'm running. The car engine is stock, I replaced the rebuilt carbuerator with a 1962 Lancer high performace carb which is one barrel sitting on the slant six. I've got synthetic oil in the crank and a three core radiator. A 2.25 inch exhaust pipe going into a turbo muffler from Midas. As for the tires, I've bumped up from the original 13 inch wheels to 14 inch while not changing anything but the rims with 180/75/14 Dunlop tires which have a 1,290 max weight each. I'm still running with drums all the way around which are lighter in weight than discs and a A-833 OD transmission from a 1976 Dodge Aspen. I changed the air filter before I left and checked air pressure in tires. I was looking at old brochures on the 63 Dart and they advertised 30 mpg in 1963 and felt it should still be possible. I just wanted to share my experience with other slant sixers to show it is still possible and to laugh at others for thinking it takes a new car to achieve good gas mileage. Good luck too all and happy holidays. Brian |
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| Author: | Greg Ondayko [ Sun Dec 28, 2008 1:12 pm ] |
| Post subject: | |
Briam that's great to hear! After you changed to the 14" tires and changed the tranny did you check to see if the Speedo gear in the tranny matches your tire size and Axle Ratio out back. Best thing is to check the speedo tenths with the tenths on the freeway. Greg |
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| Author: | bubs63Dart [ Tue Dec 30, 2008 7:09 pm ] |
| Post subject: | speedo checked |
Greg, Yes I synced the speedo once bumping up wheel and tire size and my rear ratio is original which I believe is 2.93, it's really cool passing up the brand new gas hogs on the road with a 45 year old car. I just wanted to pass on what I had done so maybe to help anyone else who might be looking for economy, this combination seems to do me good. Quote: Briam that's great to hear!
After you changed to the 14" tires and changed the tranny did you check to see if the Speedo gear in the tranny matches your tire size and Axle Ratio out back. Best thing is to check the speedo tenths with the tenths on the freeway. Greg |
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| Author: | Rug_Trucker [ Fri Jan 02, 2009 7:33 am ] |
| Post subject: | |
The drums offer less drag/rolling resisteance. Maybe they are lighter too. What is a HP Lancer 1bbl? |
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| Author: | SlantSixDan [ Fri Jan 02, 2009 11:23 am ] |
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Quote: The drums offer less drag/rolling resisteance. Maybe they are lighter too.
Discs weigh less.Quote: What is a HP Lancer 1bbl?
The 225 was considered the "high performance" package (sometimes "power package") vs. the 170. The "High Performance" notation is found in some carburetor application tables for the early cars; it means the ordinary carburetor factory installed on regular production 225s that were not destined for fleet or taxi service (those got smaller, leaner carburetors to maximise economy at the expense of some performance).
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| Author: | emsvitil [ Fri Jan 02, 2009 9:00 pm ] |
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Quote: Quote: The drums offer less drag/rolling resisteance. Maybe they are lighter too.
Discs weigh less.Calipers weigh more................
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| Author: | Dart270 [ Sat Jan 03, 2009 9:48 am ] |
| Post subject: | |
Nothing weighs less than 9" drums, I've weighed everything. Not my favorite setup to drive around, but very light. Lou |
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| Author: | Reed [ Sat Jan 03, 2009 9:51 am ] |
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30 MPG is very good. However, It just proves my theory that a properly set up and well tuned slant six can compete with modern engines and cars in the fuel economy department, and wins hands down in the reliability and cost of operation department. Heck, I got my brother's 83 Dodge van with a slant six/727 to get 20-21 MPG on the highway doing 65. |
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| Author: | dietz_diggler [ Mon Jan 05, 2009 1:25 pm ] |
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Quote: 30 MPG is very good. However, It just proves my theory that a properly set up and well tuned slant six can compete with modern engines and cars in the fuel economy department, and wins hands down in the reliability and cost of operation department. Heck, I got my brother's 83 Dodge van with a slant six/727 to get 20-21 MPG on the highway doing 65.
but the van definitely has an aerodynamic advantage over the modern vehicles...  
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| Author: | Reed [ Mon Jan 05, 2009 1:39 pm ] |
| Post subject: | |
Quote: Quote: 30 MPG is very good. However, It just proves my theory that a properly set up and well tuned slant six can compete with modern engines and cars in the fuel economy department, and wins hands down in the reliability and cost of operation department. Heck, I got my brother's 83 Dodge van with a slant six/727 to get 20-21 MPG on the highway doing 65.
but the van definitely has an aerodynamic advantage over the modern vehicles... Riiiiiight....  Lets just bolt a 4x8 sheet of plywood to the front of a Dart and then test it in a windtunnel.
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| Author: | MichaelS [ Mon Jan 05, 2009 3:36 pm ] |
| Post subject: | |
OK, so why does my '74 dart only get around 20mpg? Is it heavy, shaped like a brick , whats the deal? It should get as good as a early '60s car shouldn't it? Or at least be able to. |
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| Author: | 65 dartman [ Mon Jan 05, 2009 3:41 pm ] |
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Quote: Is it heavy, shaped like a brick , whats the deal?
I think you hit the nail n the head! Early A Bodies weighed considerably less than the 70s A Bodies and were probably more aerodynamic as well.
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| Author: | Reed [ Mon Jan 05, 2009 4:19 pm ] |
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Combination of state of tune of the motor, adjustments to the carb and timing curve, transmission adjustments. 20+ MPG in a Dart or Valiant is still very good. In an auto I would expect more gains if you ran a lockup tranny or some low (numerically) rear gears, like 2.9 or 3.2. A light foot on a one barrel carb would really help. Then again, my brother's van is roughly 3,500 pounds... |
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| Author: | volksrod88 [ Thu Jan 08, 2009 8:52 pm ] |
| Post subject: | ............... |
................ |
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| Author: | Joshie225 [ Thu Jan 08, 2009 9:02 pm ] |
| Post subject: | |
Welcome! Did you keep mileage and fuel records on your travels? I would find it interesting to compare and contrast the old American interpretation of an economy car with the old German one. Actually, I may be assuming too much. When most folks say they are VW fan I still think air cooled although my VWs were biased toward the water cooled varieties. |
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