Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-12-2020, 08:07 PM   #1 (permalink)
Master Ecomadman
 
arcosine's Avatar
 
Join Date: Nov 2010
Location: Chicago area
Posts: 1,136

sc1 - '98 saturn sc1
Team Saturn
90 day: 43.17 mpg (US)

Airplane Bike - '11 home built Carp line Tour

rans - '97 rans tailwind

tractor - '66 International Cub cadet 129

2002 Space Odyssey - '02 Honda Odyssey EX-L
90 day: 28.25 mpg (US)

red bug - '00 VW beetle TDI

big tractor - '66 ford 3400

red vw - '00 VW new beetle TDI
90 day: 58.42 mpg (US)
Thanks: 18
Thanked 317 Times in 215 Posts
caravan transfer gears

I have a 2007 town and country with a 3.3 v6. I got transfer gears from a 3.8 in the junk yard. I will swap them, the 47/49 to 50/46. Overall top gear ratio will be from 2.49 to 2.2. Will shift to OD at 51 mph, now shifts at 45 mph. Will be 1800 rpm at 65 mph, now at 2050 rpm, hwy mpg should increase from 25 to 26.5.


...Taken from the ATSG Chrysler A604(41TE) Update Handbook (1999)

__________________
- Tony


Last edited by arcosine; 10-13-2020 at 08:24 AM..
  Reply With Quote
The Following 2 Users Say Thank You to arcosine For This Useful Post:
Ecky (10-22-2020), Fat Charlie (10-12-2020)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-12-2020, 09:41 PM   #2 (permalink)
Master EcoModder
 
Join Date: May 2012
Location: Tampa, FL
Posts: 1,556

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
Thanks: 168
Thanked 343 Times in 238 Posts
I nearly dod the same thing with an intrepid. Apparently, you could install those gears backwards and get a big overdrive, though I never actually did it.
__________________




  Reply With Quote
Old 10-13-2020, 08:21 AM   #3 (permalink)
Master Ecomadman
 
arcosine's Avatar
 
Join Date: Nov 2010
Location: Chicago area
Posts: 1,136

sc1 - '98 saturn sc1
Team Saturn
90 day: 43.17 mpg (US)

Airplane Bike - '11 home built Carp line Tour

rans - '97 rans tailwind

tractor - '66 International Cub cadet 129

2002 Space Odyssey - '02 Honda Odyssey EX-L
90 day: 28.25 mpg (US)

red bug - '00 VW beetle TDI

big tractor - '66 ford 3400

red vw - '00 VW new beetle TDI
90 day: 58.42 mpg (US)
Thanks: 18
Thanked 317 Times in 215 Posts
Installing the gears backward would reverse the thrust, not sure of the outcome. The Intrepid uses the 42TE transmission, a longitudinal layout that does not use these transfer gears, it uses a chain and sprockets.
__________________
- Tony


Last edited by arcosine; 10-13-2020 at 08:30 AM..
  Reply With Quote
The Following User Says Thank You to arcosine For This Useful Post:
Fat Charlie (10-13-2020)
Old 10-20-2020, 11:30 AM   #4 (permalink)
Master Ecomadman
 
arcosine's Avatar
 
Join Date: Nov 2010
Location: Chicago area
Posts: 1,136

sc1 - '98 saturn sc1
Team Saturn
90 day: 43.17 mpg (US)

Airplane Bike - '11 home built Carp line Tour

rans - '97 rans tailwind

tractor - '66 International Cub cadet 129

2002 Space Odyssey - '02 Honda Odyssey EX-L
90 day: 28.25 mpg (US)

red bug - '00 VW beetle TDI

big tractor - '66 ford 3400

red vw - '00 VW new beetle TDI
90 day: 58.42 mpg (US)
Thanks: 18
Thanked 317 Times in 215 Posts
Well I took the cover off, and it already has 50/46 gears. So it must have a higher final drive than the 3.8 or the same, maybe the transmission was replaced. Maybe the above table is only good up to 1999. So Im letting the fluid drip out before sealing it back up. I'll check the rpm in OD, TC locked up and post what the final drive ratio is after calculating.
__________________
- Tony

  Reply With Quote
Old 10-22-2020, 12:16 PM   #5 (permalink)
Master EcoModder
 
Join Date: Feb 2014
Location: Missoula, MT
Posts: 2,136

Dark Egg - '12 VW Touareg TDI Sport AWD
90 day: 25.81 mpg (US)
Thanks: 191
Thanked 901 Times in 619 Posts
I wonder how much you could get with taller tires.

Probably all of this would be easier to just shop for a 2011 with the 3.6 and 6 speed. We have one and can pretty easily get 30 mpg at those speeds
__________________

  Reply With Quote
Old 10-22-2020, 09:51 PM   #6 (permalink)
Master EcoModder
 
Join Date: May 2012
Location: Tampa, FL
Posts: 1,556

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
Thanks: 168
Thanked 343 Times in 238 Posts
Quote:
Originally Posted by arcosine View Post
Installing the gears backward would reverse the thrust, not sure of the outcome. The Intrepid uses the 42TE transmission, a longitudinal layout that does not use these transfer gears, it uses a chain and sprockets.
42LE, but yes. The picture of the cover and gears looked awfully familiar. What I meant by backwards is, input gear on output shaft and output gear on input shaft. It was possible on the 42LE, not sure about your 41TE.

Good luck.
__________________




  Reply With Quote
Old 10-23-2020, 04:30 PM   #7 (permalink)
Master Ecomadman
 
arcosine's Avatar
 
Join Date: Nov 2010
Location: Chicago area
Posts: 1,136

sc1 - '98 saturn sc1
Team Saturn
90 day: 43.17 mpg (US)

Airplane Bike - '11 home built Carp line Tour

rans - '97 rans tailwind

tractor - '66 International Cub cadet 129

2002 Space Odyssey - '02 Honda Odyssey EX-L
90 day: 28.25 mpg (US)

red bug - '00 VW beetle TDI

big tractor - '66 ford 3400

red vw - '00 VW new beetle TDI
90 day: 58.42 mpg (US)
Thanks: 18
Thanked 317 Times in 215 Posts
transfer gear set was only $20.
__________________
- Tony

  Reply With Quote
The Following User Says Thank You to arcosine For This Useful Post:
Hersbird (10-24-2020)
Old 10-24-2020, 04:55 PM   #8 (permalink)
Master EcoModder
 
Join Date: Feb 2014
Location: Missoula, MT
Posts: 2,136

Dark Egg - '12 VW Touareg TDI Sport AWD
90 day: 25.81 mpg (US)
Thanks: 191
Thanked 901 Times in 619 Posts
I noticed on fueleconomy.gov the 1999 3.3 Grand Caravan is rated 16/22/18 and the 2007 3.3 Grand Caravan is rated 17/24/20. I wonder if that simple change was a big part of the gain.
__________________

  Reply With Quote
Old 10-25-2020, 11:18 AM   #9 (permalink)
Master Ecomadman
 
arcosine's Avatar
 
Join Date: Nov 2010
Location: Chicago area
Posts: 1,136

sc1 - '98 saturn sc1
Team Saturn
90 day: 43.17 mpg (US)

Airplane Bike - '11 home built Carp line Tour

rans - '97 rans tailwind

tractor - '66 International Cub cadet 129

2002 Space Odyssey - '02 Honda Odyssey EX-L
90 day: 28.25 mpg (US)

red bug - '00 VW beetle TDI

big tractor - '66 ford 3400

red vw - '00 VW new beetle TDI
90 day: 58.42 mpg (US)
Thanks: 18
Thanked 317 Times in 215 Posts
Quote:
Originally Posted by Hersbird View Post
I noticed on fueleconomy.gov the 1999 3.3 Grand Caravan is rated 16/22/18 and the 2007 3.3 Grand Caravan is rated 17/24/20. I wonder if that simple change was a big part of the gain.
I think the piston skirts are coated on 2001+ engines...

Piston Coating : Advantages
__________________
- Tony

  Reply With Quote
Old 10-25-2020, 01:51 PM   #10 (permalink)
Rat Racer
 
Fat Charlie's Avatar
 
Join Date: May 2011
Location: Route 16
Posts: 4,033

Al the Third, year four - '13 Honda Fit Base
Team Honda
90 day: 42.9 mpg (US)
Thanks: 1,711
Thanked 1,841 Times in 1,193 Posts
Differences in software and transmission innards. The 01-07 minivan was much better overall than the previous generation.

__________________

Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com