View Single Post
Old 01-20-2022, 01:25 PM   #10 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,367
Thanks: 24,464
Thanked 7,401 Times in 4,795 Posts
engine mods vs aero and R-R

Quote:
Originally Posted by racprops View Post
LOL even then at zero driving there is volatile components evaporate easily, a large amount of vapor is quickly generated from the gasoline surface....

Here is my current plans: For the Best MPG in what we currently own:

A 2000 Toyota Camry, gets 25/30 City mixed, highway unknown but feel 30+ even close to 40 possible. I will not mess with it no way no how.

I am fixing up a 03 Ford Explorer with the 4.6 V8 and 5r55 5 speed auto, a fact reported by data on this truck is that ITS 4.6 makes 240FtPDs of torque at 1500RPMs. I believe it too can pull the truck at 1600RPMs and give good MPG.

Currently my best guess is 25MPG at 50MPH.

My plans are to add a second overdrive, a old Borg-Warner overdrive removed from a 1950s 3 speed with OD.

I believe with this I will be able to cruse on flat highways at 75/85MPHs and get that 25MPG.

I am also lowering it by 2.5 inches in the rear and 2 inches in the fron by lowering springs by Bell Tech.

I also plan on adding ground effects to lower its drag and the effects of passing Big Rigs and cross winds.

I also will find away to lean it out on cruising, which has been shown to take the 85/90 Camaros from 20/25 TO 30/35MPG ALONE!!!

This SUV will be out local runner and our Day Tripper (Its name) for small trips which we plan on returning to sleep in our own beds.


I am building a SBC 383 with a veritable cam (thanks to RHoads Lifters) as a LOW 2000 Torque peek engine, with a 85/90 Camaro TPI intake running that same lean burn fuel ratios.

For my Star Craft Custom 93 Chevy G20 full size van.

In this I will be running a 4L80e with a US Gears Dual Range Overdrive, and here too the plan and numbers show I can run this G20 at 1700RPMs at 80MPH, here too I will pull out all the stops, lean burn ETC. and I hope for 20 to 30MPG flat highway and no winds.

This rig has a bed room and will be out Overnighter.

Lastly I will be restoring a 68 VW Bug, mainly for its total lack of everything and it main long life and ease of repair and nearly lack of the need of any repairs.

I do not think these do all that well MPG I have only seen 25 to 30MPG on record.

It is a 1600Dual Port with a good Weber progressive two barrel feeding it and running a Super Bettle Trans-axle for its taller gear rear end.

Has anyone done any MPG work on one of these??

Rich
1) Consider that the billions Ford spent on EcoBoost adds 0.5-mpg on the highway.
2) The highest dividends you'll ever experience will come from load reduction, and aero is your major source of road load power requirement.
3) The experts will recommend that you cut drag, then re-gear to allow the engine operate within the same load 'island' of its BSFC map. Otherwise you can lose up to 70% of your streamlining potential.
4) Knowing the Cd and frontal area of the Ford and GM van is mandatory.
5) The Beetle's a real dog. My Air Force roommate had a '68 and we never saw north of 28-mpg at 55-mph, whereas my 40-horse Karmann Ghia consistently returned 41-mpg at 70-mph.
6) LRR tires ought to be on the mod list.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote