Author Topic: Transmission gear ratio difference? (Read 2138 times)

rabbit_diesel · « **on:** October 19, 2007, 02:45:34 pm »

What would the gear ratio be like if I put a 1.6 N/A diesel tranny onto a 1.8 gas engine? How would it behaive, would it be geared down or up? I just don't like driving an auto, and plus it gets worse gas mileage.

jtanguay · « **Reply #1 on:** October 19, 2007, 05:02:09 pm »

diesel tranny on a 1.8 gas engine. well since its the n/a diesel, it should be on par with the 1.8 tranny. then again, anything is better than an auto box!!!!! they are horrible on the highway. 3500 rpm @ 100km/h? :shock:

but driving around town is cool with the auto box. no matter how hard i drove that thing it wouldn't die... shifts @ 7k rpm etc. 2nd gear was USELESS lol tranny still worked, and engine had serious blowby (air filter was SOAKED) :lol: still ran, but body was shiite

bmatthis1 · « **Reply #2 on:** October 20, 2007, 12:32:52 pm »

Look underneath the car next to oil pan on the bottom of the bellhousing of the tranny. There should be a little flat pad machined into the aluminum there with a transmission code stamped into it. Check this code and then go over to Roger's Caddy Shack site.

http://www.4crawler.com/VWpickup.shtml

He has a table there with all of the tranny codes on it and their accompanying gear ratios and most prevelant years and models of use.

rabbitman · « **Reply #3 on:** October 23, 2007, 02:47:55 pm »

Hello, my rabbit has a FN 5-speed, the rpm in 5th is 500rpm lower than a '86 golf 1.8 with a 5-speed

rabbit_diesel · « **Reply #4 on:** October 23, 2007, 06:27:50 pm »

Ya, fortunately, I think mine is going to be lower rpm's than the original one too. I am very relieved of it

. It will have better mpg's too!