Festiva vs. Aspire transmission

[fastivaca]

What would be the result of using the Aspire transmission instead of the stock Festiva? I know the gear ratios are a little different. Will engine revs for a given speed be higher or lower with the Aspire gearbox compared to the Festiva one?

Thanks

[Damkid]

Festiva vs. Aspire transmission

I believe your engine will rev slightly higher with the aspire trans

[shadetree]

I swap every car I can to the aspire trans ! But hill climbing is a car killer around here . I can say I don't notice the rpm change much but the pulling power is def better . Fuel miles is the same with no change there . But for a highway or interstate car I'd stay festy five speed .
If your not going to run 65 plus and don't wanna make a front mount I would look for a four speed festy trans they are the same final drive and promote the same results minuse the high gear ! Good luck !!!

[fastivaca]

Re: Festiva vs. Aspire transmission

Thanks for the input.

Sent from somewhere west of here!

[FestYboy]

final drive ratios are different between the festy and aspire trans, all other gears are the same. festy final is taller (lower number) and aspire final is shorter (higher number).

[Movin]

Are the transmissions in question manual , Automatic or either ?

[Bert]

I would imagine an Aspire tranny hooked to a Festy speedo, after an Aspire brake/wheel/suspension swap, would read more accurate. The speedo cable sending unit in a manual Aspire is (so they tell me) the same as manual and auto Festy but the worm gear or toothwheel inside the tranny must have a different count. I have yet to tangle with a manual Aspire; the two I bought for swap purposes were autos specifically because the rotors are thicker and the calipers spaced further apart.

[Safety Guy]

Auto Aspire transaxles have a lower final drive than the Festiva unit as well.

Final drives changed about three times depending on the year of the Aspire. Also, I believe the last two years of Aspire auto transaxles had lockup torque converters, which should partially make up for any fuel economy losses, if not improve them even more.

Karl

[fastivaca]

Re: Festiva vs. Aspire transmission

Are the transmissions in question manual , Automatic or either ?

I'm concerned with the manual transmissiin but this is good info to have on the auto as well.

Sent from somewhere west of here!

[FestYboy]

Karl i have to say that the lockup converter does nothing for fuel economy except decrease it... the converter locks up too easily and you loose torque multiplication and therefore power to accel. that means you have to stay in the throttle harder and longer compaired to a festy auto with no lockup.

[Safety Guy]

Arty wrote:

"Karl i have to say that the lockup converter does nothing for fuel economy except decrease it... the converter locks up too easily and you loose torque multiplication and therefore power to accel. that means you have to stay in the throttle harder and longer compaired to a festy auto with no lockup."

Weird! I wonder why they put it on then? Maybe it worked well enough to improve the gov't CAFE cycle tests?

Karl

[FestYboy]

bingo... i average 6 mpg better in Pepe than i do in Kermit (auto festy vs auto 96 aspire)

[bhazard]

Re: Festiva vs. Aspire transmission

I have both a lockup aspire converter and a non lockup festy converter for when I put my bpt auto setup together. I was actually thinking of running the lockup converter because Ive read about some turbo/auto Subaru setups people run and they like to lock up their converters before 2nd gear. Some have gotten better ETs and such. I'm thinking being locked up will put more load on the motor and thus help spool the turbo...

[FestYboy]

for you it may work, but be warned: it;s a centifugal mechanism and can only hold so much power. after that, it slips.

[bhazard]

Re: Festiva vs. Aspire transmission

Hmm so in that case I'm thinking one of two things....

Either the converter will not lock under full load due to excess power and work fine at cruise

Or the power will cause the centrifugal clutch to slip and wear out quickly and send clutch material into my trans....

Professor DeAngelis?