1985-1998 [Subscribe to Daily Digest] |
Ya, I've got the manual, too. I can't answer your question on the
input shaft with 100% certainty. IMHO, it makes sense to keep all
the input shaft sizes the same for a given year - all '91-'93 turbos
had the same, smaller, input shaft, here in the US. Replacing
the transaxle, as a unit, seems to be the most sensible, if you're
concerned with down-time. However, I also think that the design
parameters, concerning torque, probably has some significance
between the two sets of gears - maybe it doesn't - just a guess.
You know, people talk about the 'Aero suspension' as if it's something different from all the other Saab suspensions. Look
at an old 99 rear suspension - it's essentially the same as a
9000 suspension. The only difference is where the sway/stabilizer
bar attaches. What I'm trying to say here is, like anything thing else,
you could probably do this conversion and never have a problem,
if you go easy!.....however, seeing as you like the acceleration
effect that the 4.05 will instill, perhaps your efforts would be less, if
spent on performance upgrades to the engine? It's been my
experience (IBME), that with Saabs', engine performance upgrades
usually result in greater efficiency, higher gas mileage. Having
driven many 9000's with the 4.05 gearing, I can say with absolute
certainty that a slighty 'tuned' engine with the 83:23 gears feel
just as 'quick', in terms of acceleration, as a 85:21 set on the B234L
engine. Plus, at the speed limit (65 mph), the 83:23 gears put
my tach at about 2300 rpms, in 5th. Convert that to revolutions per
mile and multiply that by a couple hundred thousand miles, then tell me how much less distance you've traversed with the 85:21 set!
I'm sure it's significant.........just being a devils' advocate!
posted by 12.91.2...
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
![]() |
![]() |
![]() |
![]() |
![]() |