7mt questions for new build.
#16
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Pretty easy, you just rev-match manually. Going up is easier than down but both are perfectly fine if you understand the basics of what how a clutch and transmission work.
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Yes I was referring to rev matching in order to match transmission speed with engine speed on down shifts the old fashioned way.
My over rev question has to do with missing a gear on an up shift specifically on track and thus creating an over rev situation. It happens, people mention it on the gt 3 forum. I think the gt3 has a 6mt which wouldn’t have a rev limiter apparently.
My over rev question has to do with missing a gear on an up shift specifically on track and thus creating an over rev situation. It happens, people mention it on the gt 3 forum. I think the gt3 has a 6mt which wouldn’t have a rev limiter apparently.
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Having said that, I, too, don't understand why anyone does this, except as a novelty.
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I wouldn't call it a feature. Some refer to it as "slip shifting." You first shift to neutral, and then wait for (upshift) or induce (downshift) RPM while maintaining "gentle" / "expectant" pressure against the shifter (you're not trying to ram into into gear)... when the RPM matches the target (RPM at speed for target gear), the shifter will slide into gear.
Having said that, I, too, don't understand why anyone does this, except as a novelty.
Having said that, I, too, don't understand why anyone does this, except as a novelty.
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dhirm5 (08-31-2022)
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That's true, manuals are harder to find and demand more in the used car market where I live. Especially for T's and GT cars. Having said that, why would you worry about an over-rev check? It's only possible if you try to down shift to a gear that's too low for the moving speed. Never had that happen in my years of driving MT. If you are worried about it, max speeds for every gear is published and worthwhile to quickly review.
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Once I recall driving one of them 2-hrs home without a clutch, it was easy in them as the bottom of the gear lever acts directly on the selector forks so you can really feel the engagement on each gear. And of course you had synchromesh to help. But starting, that was always fun. Into 1st, make sure nobodies in the way, start the engine and off you go.
Last edited by aggie57; 08-31-2022 at 03:58 PM.
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I learnt it back in the crash box days, mainly in Fiat 500's which had no syncro's, but it did come in handy on a couple of occasions in endurance events running 70's era Alfa's.
Once I recall driving one of them 2-hrs home without a clutch, it was easy in them as the bottom of the gear lever acts directly on the selector forks so you can really feel the engagement on each gear. And of course you had synchromesh to help. But starting, that was always fun. Into 1st, make sure nobodies in the way, start the engine and off you go.
Once I recall driving one of them 2-hrs home without a clutch, it was easy in them as the bottom of the gear lever acts directly on the selector forks so you can really feel the engagement on each gear. And of course you had synchromesh to help. But starting, that was always fun. Into 1st, make sure nobodies in the way, start the engine and off you go.
I am embarrassed to say it but I learned manual shifting on Trabant's, Moskvich, Lada's .... and years later was able to enjoy my Audi 90 Quattro Kaman. Still have a manual in the garage today (GR86). Last I had issues with what my 435i manual (pretty hard to find too)...it did not like the Spec Stage 2 clutch replacement and was a bear to shift after it warmed up. I picked PDK this time to see what it is all about and its a superb box too.
PS: My worst was loosing clutching ability in my 56' VW Beetle...on the Autobahn. By the time I made it home the tranny was done.
Last edited by Tobeit; 08-31-2022 at 04:04 PM.
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aggie57 (08-31-2022)
#23
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Trying to finalize my 4 GTS build and am debating 7mt vs. PDK. My dealer says when you trade in a manual most buyers will require a scan of the dme for over revs. Does the 992 not have rev limiters? Can the auto blip for down shifts be eliminated in some of the mode settings? Can the transmission be shifted without using the clutch both on up and down shifts? Many truck trans you only use the clutch when starting from a stop. I know this isn’t a truck, but you could shift a 986 easily with out clutching. Or maybe it was just worn out😁 love my PDK in my cayman especially on track but am torn on the GTS. TIA
2. Probably the last manual as they go hybrid/electric.
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StuM (09-03-2022)
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Yeah, good ol' manual tranny's required a bit more than today's.
I am embarrassed to say it but I learned manual shifting on Trabant's, Moskvich, Lada's .... and years later was able to enjoy my Audi 90 Quattro Kaman. Still have a manual in the garage today (GR86). Last I had issues with what my 435i manual (pretty hard to find too)...it did not like the Spec Stage 2 clutch replacement and was a bear to shift after it warmed up. I picked PDK this time to see what it is all about and its a superb box too.
PS: My worst was loosing clutching ability in my 56' VW Beetle...on the Autobahn. By the time I made it home the tranny was done.
I am embarrassed to say it but I learned manual shifting on Trabant's, Moskvich, Lada's .... and years later was able to enjoy my Audi 90 Quattro Kaman. Still have a manual in the garage today (GR86). Last I had issues with what my 435i manual (pretty hard to find too)...it did not like the Spec Stage 2 clutch replacement and was a bear to shift after it warmed up. I picked PDK this time to see what it is all about and its a superb box too.
PS: My worst was loosing clutching ability in my 56' VW Beetle...on the Autobahn. By the time I made it home the tranny was done.
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Tobeit (08-31-2022)
#27
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Odd. I find that my manual F80 M3 auto rev matches perfectly and better than my 992 S. The F80 also does hill hold assist VASTLY better than the 992 which almost never works or works intermittently and unpredictably.
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Trying to finalize my 4 GTS build and am debating 7mt vs. PDK. My dealer says when you trade in a manual most buyers will require a scan of the dme for over revs. Does the 992 not have rev limiters? Can the auto blip for down shifts be eliminated in some of the mode settings? Can the transmission be shifted without using the clutch both on up and down shifts? Many truck trans you only use the clutch when starting from a stop. I know this isn’t a truck, but you could shift a 986 easily with out clutching. Or maybe it was just worn out😁 love my PDK in my cayman especially on track but am torn on the GTS. TIA
Yes. I assume like any manual you can up/down shift w/o the clutch by rev matching but i have not tried it yet and have no intention of trying.
If you like driving a manual, just get the manual. If you are indifferent, get the PDK b/c it's quicker, has cool stuff like launch control, and you won't have to worry about overrevs, blowing up the engine, etc.
Still, a manual GTS would be very fun. It has amazing performance for a manual transmission car and is quicker than a 992 GT3 manual. In fact, I can't think of any current manual transmission car that is quicker than a 992 GTS manual.
#29
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992 Does have a rev limiter. If you floor it in 1st gear and try to rev it past redline, it will not go past the rev limiter. However, you can still override the rev limiter in any real manual transmission car by mechanically over-revving it. For example, if you are in 3rd gear, flooring it to redline then try to shift into 4th but accidentally pull it into 2nd gear and release the clutch, you will mechanically over-rev the engine and likely bend some valves or cause other major damage. This is what's typically called a "money shift." Because the tires are spinning at say 90 mph when you redline in 3rd gear when you shift into 2nd accidentally, the tires and driveshaft are still spinning at 90 mph and the second you release the clutch, this will cause the engine to mechanically try to rev up to 9000 RPM or whatever and blow up. An electronic rev limiter will not prevent his mechanical over-rev.
Yes. I assume like any manual you can up/down shift w/o the clutch by rev matching but i have not tried it yet and have no intention of trying.
If you like driving a manual, just get the manual. If you are indifferent, get the PDK b/c it's quicker, has cool stuff like launch control, and you won't have to worry about overrevs, blowing up the engine, etc.
Still, a manual GTS would be very fun. It has amazing performance for a manual transmission car and is quicker than a 992 GT3 manual. In fact, I can't think of any current manual transmission car that is quicker than a 992 GTS manual.
Yes. I assume like any manual you can up/down shift w/o the clutch by rev matching but i have not tried it yet and have no intention of trying.
If you like driving a manual, just get the manual. If you are indifferent, get the PDK b/c it's quicker, has cool stuff like launch control, and you won't have to worry about overrevs, blowing up the engine, etc.
Still, a manual GTS would be very fun. It has amazing performance for a manual transmission car and is quicker than a 992 GT3 manual. In fact, I can't think of any current manual transmission car that is quicker than a 992 GTS manual.
Also, it depends on what you mean by "quicker" -- sure, straight line the GTS might be quicker than the GT3, but what happens when you have to turn?
#30
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Don’t get your panties in a wad. Did I say a GTS is better than a GT3? Did I say I prefer a GTS over a GT3? No.