Gearbox 915 (for 3.2 series): how many types of 915 gearbox?

[dan67]

Hi!, i'am Danilo from Italy (sorry for my bad english)

please, how many types of 915 gearbox on 3.2 body? (i have 915/67 Euro)
(eccept models CH/JAP(short gear..i suppose) or catalized models)

I read in an old italian magazine on middle 85 the 915 change on 915/72? (good 1°sincro and shift, and other small improvements)

[livi]

Between 1984-86 there were six 915 iterations:
915/67
915/68
915/69
915/70
915/72
915/73

[dan67]

wow! six gearbox type!

[Peter Zimmermann]

/67 = '84 RoW
/68 = '84 USA/Japan
/69 = '84 Turbo Look RoW
/70 = '84 Turbo Look USA/Japan
/72 = '85/86 RoW
/73 = '85/86 USA/Japan/M 298

All units were 5-speed.

[GH85Carrera]

Were the differences just the gear ratios?

[dan67]

thanks! but please difference 915/67 vs 72 ?

[Peter Zimmermann]

Originally Posted by GH85Carrera

Were the differences just the gear ratios?

The /67, /69 & /72 had the same ratios, and the /68, /70 & /73 had the same ratios. All units had the 8:31 final drive. The two '84 Turbo Look transmissions were fitted with 108mm diff flanges that were compatible with Turbo axles/CV joints. All '85/86 915s were fitted with 108mm diff flanges; they were set up to work with both Turbo Look models and regular narrow-bodied Carreras.

[Peter Zimmermann]

Originally Posted by dan67

thanks! but please difference 915/67 vs 72 ?

Both of those units were fitted with the same internals, except axle flanges, and both were RoW units that had external oil cooling. The /67 had 100mm diff flanges, the /72 had 108mm flanges. The small and large flanges can be interchanged.

[donporfi]

Which ones did have an LSD ?

[carrera84]

With or without oil-cooler, ratios...

Differences are listed here

Google-Ergebnis für http://www.pocg.eu/pages/technik/911/images/915_getriebe.jpg

[Peter Zimmermann]

Originally Posted by donporfi

Which ones did have an LSD ?

LSD was optional, and designated by the number "12" stamped into the housing at the serial number.