mrsullivan

After some searching and reading, I still havent found a CLEAR and CONCISE summary of the engine and transmission difference from these last three series

I understand the dry sump issue, cable linkage on newer transmission, but I am hoping that some of our more technical types might respond with a summary or recommended reading source on this topic.

thanks!

DC from Cape Cod

993 engines and trannies are perfect and everything else is either made of plastic, paper mache, or both.

RallyJon

I heard 996 and 997 engines are built by slave labor in Chinese prisons using melted down beer cans with tooling bought used from Subaru's scrapyard.

chris walrod

If it wasnt for the quality troubles of the water pumper engines, their technology is wonderful!

The watercooled 911 engines are much less modular which, by design, offer less places to leak from but also MUCH less expensive to manufacture. Four valve heads, DOHC with Variocam technology are the highlights of such powerplants.

mrsullivan

...ok, let me see if i can prod this along....

- 993 engines and trannies are quite solid, hand-made, dry sump, gt1-derived, etc. HOWEVER, we will all need clutch transplants in the not so distant future at $3k ish, possibilit of top end rebuilds at $10k, etc.

- 996 engines have RMS leak problems, otherwise ok? 996tt bottom end based on 993, so probably much better than the 996 NA? Shifting uses cable linkage, much tighter feel when shifting, but the trannie is "throw away"?

-997 engine --- largely the same as 996, but RMS leakage issue solved?

help.... please... thanks

chris walrod

Actually, a linkage shifted trans will be more direct than that of a cable shifted type. All manual trans cars will require clutch replacements, which shouldnt differ much in terms of price.

mrsullivan

Chris, then why does a 996 or 997... any variant... feel so snickity-snickity compared to the 993? the throw is shorter, crisper, and engages very directly into the gates... i know that there is nothing wrong with my trannie, and i have driven several 993s...none have shifted as well IMHO... maybe just a personal subjective thing (?)

pcar964

lol

Chris W. - '96 Targa

I know someone will correct me if I'm wrong , but my understanding was the 996 Turbo engine actually used the same block as the 993 (dry sump and all), but just had water-cooled *heads*. The non-turbo 996 is a wet sump, completely different block made of the aforementioned beer cans and Subaru tooling.

It's only for this reason that I sometimes think of looking at a 996 Turbo. But I still can't get past the funky headlights and lack of curves. Good thing I still enjoy my Targa!



-Chris

pcar964

You are correct on all counts.

Joe S.

Add to that the GT2 and GT3 as well.

mrsullivan

why is it then that we hear many examples of RMS issues on 996tt cars....

Davies

Yeah, I recall reading that the watercooled cylinder blocks are cast in one piece - as opposed to the individually cast aircooled cylinders, which was the main component in cost reduction (and one reason why entire engines have to be replaced when something goes wrong...)

Pete Lech

Well, right part of the world, anyway, for the trannies. The 997 tranny is made by Aisin in Japan, has triple synchros on 1st and 2nd, and doubles on 3rd and 4th. THAT should help the weak synchro problem of the 993s. The short shifter is bitchin'

FYI, the Cayenne "automagic" tranny is from the Toyota Land Cruiser....

mrsullivan

this is the kind of info i was looking for... thanks!