4gfun
Supporting VIP
- 2,009
- 55
- Dec 10, 2007
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Ask Me,
Virginia
It looks rather likely that I'll have to replace the transmission in my 94 FWD Turbo Laser or have it rebuilt.
I have a working 1g AWD transmission laying around that I'd like to possibly use for it.
I know that I'd have to use a viscous coupling eliminator etc. I don't want to talk about that now, I'd like to stay focused on the below specific question please.
I also know that I can use taller tires to change my effective gear ratio. I know this already, I'd like to stay focused on the below specific question please.
Question:
1) This FWD Turbo Laser is intended to be a fuel economy build . The AWD transmission looks to have numerically lower 2nd - 5th gears than the FWD transmission, which would assist in the goal of lower RPMs and better fuel economy.
Please see this URL for a comparison:
http://www.roadraceengineering.com/eclipsetech/transgearratios.html
However, I notice that the final drive is numerically much higher on the AWD.
Does this mean that even though the gears are numerically lower in most of the gears on the AWD than on the FWD, the numerically higher final drive would actually cause a higher RPM (in 5th gear for example) and accordingly worse fuel economy when put into my 1g FWD Turbo Laser?
Feel free to explain all you want, and it is appreciated....but due to the sheer amount of questions, goals, and problems with this gorgeous lemon of a DSM, I need to come to conclusions ASAP so that I can fix my next problem.
Thank you!!
I have a working 1g AWD transmission laying around that I'd like to possibly use for it.
I know that I'd have to use a viscous coupling eliminator etc. I don't want to talk about that now, I'd like to stay focused on the below specific question please.
I also know that I can use taller tires to change my effective gear ratio. I know this already, I'd like to stay focused on the below specific question please.
Question:
1) This FWD Turbo Laser is intended to be a fuel economy build . The AWD transmission looks to have numerically lower 2nd - 5th gears than the FWD transmission, which would assist in the goal of lower RPMs and better fuel economy.
Please see this URL for a comparison:
http://www.roadraceengineering.com/eclipsetech/transgearratios.html
However, I notice that the final drive is numerically much higher on the AWD.
Does this mean that even though the gears are numerically lower in most of the gears on the AWD than on the FWD, the numerically higher final drive would actually cause a higher RPM (in 5th gear for example) and accordingly worse fuel economy when put into my 1g FWD Turbo Laser?
Feel free to explain all you want, and it is appreciated....but due to the sheer amount of questions, goals, and problems with this gorgeous lemon of a DSM, I need to come to conclusions ASAP so that I can fix my next problem.
Thank you!!
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