GT3.2 to have a 6spd? and a 4.0?
07-19-2016, 02:54 PM
#46
Didn't AP say in an interview that the crank in the RS was a high 4 digit item? Are they going to put this in the GT3? Also, I'd think that if they really wanted to drop the 3.8 engine they wouldn't have built any 2016's. Is the 4.0 engine really a better design or does it just have updates (oiling, coatings) similar to the G model 3.8 engines.
I haven't seen anyone confirm the maximum engine speed in the R. I'd be very surprised if the car with a manual gearbox has a staged rev limit and even more surprised if it revs higher than the RS in the higher gears. I think they made it a consistent 8600 across all gears.
Some people with December RS builds will just be getting their cars when the new 4.0 GT3 is coming out? I don't think I've ever seen Porsche do something like that. Of coarse these are all my biased thoughts and opinions.
I haven't seen anyone confirm the maximum engine speed in the R. I'd be very surprised if the car with a manual gearbox has a staged rev limit and even more surprised if it revs higher than the RS in the higher gears. I think they made it a consistent 8600 across all gears.
Some people with December RS builds will just be getting their cars when the new 4.0 GT3 is coming out? I don't think I've ever seen Porsche do something like that. Of coarse these are all my biased thoughts and opinions.
07-19-2016, 02:55 PM
#47
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And a cruising 7th gear has no place in a GT car, imo. A 7M should have same ratios as PDK-S.
07-19-2016, 02:57 PM
#48
Three Wheelin'
Once again just some comments because I can't sit back and listen without firing off some responses regardless of which engine you discover in .2 GT3
As far as those that think that Porsche needs to "move on" from 3.8l because of the issues that have come up, this is far from true. Porsche does not need to give up on the 3.8L at all. In fact they could (and already have) make some further enhancements to improve reliability as many manufacturers do during a engine production cycle. They have learned a lot during development of 9A1 for racing teams over course of 16 months and much of the 4.0L discoveries can be passed down to 3.8L. 3.8L is still a less expensive engine to produce and they need to keep the price point in line with a marketing target Msrp that the bean counter analysts believe it needs to come to market at.
Many also mention it would be a no brainer just to switch to 4.0l engine but remember that it comes at a increase in manufactureing cost (namely the crank). On the plus side it's very likely they have figured out this far along how to reduce the cost to produce the 4.0l engine through several different means (not uncommon at this point in production) but it's unlikely that the unobtanium crank has gotten that much less expensive in manufacturing terms and it's a major reason the RS engine is not produced at same cost as 3.8L in GT3.
As far as those that think that Porsche needs to "move on" from 3.8l because of the issues that have come up, this is far from true. Porsche does not need to give up on the 3.8L at all. In fact they could (and already have) make some further enhancements to improve reliability as many manufacturers do during a engine production cycle. They have learned a lot during development of 9A1 for racing teams over course of 16 months and much of the 4.0L discoveries can be passed down to 3.8L. 3.8L is still a less expensive engine to produce and they need to keep the price point in line with a marketing target Msrp that the bean counter analysts believe it needs to come to market at.
Many also mention it would be a no brainer just to switch to 4.0l engine but remember that it comes at a increase in manufactureing cost (namely the crank). On the plus side it's very likely they have figured out this far along how to reduce the cost to produce the 4.0l engine through several different means (not uncommon at this point in production) but it's unlikely that the unobtanium crank has gotten that much less expensive in manufacturing terms and it's a major reason the RS engine is not produced at same cost as 3.8L in GT3.
Last edited by sccchiii; 07-19-2016 at 09:52 PM.
07-19-2016, 02:57 PM
#49
07-19-2016, 03:02 PM
#50
Nordschleife Master
Really? You are saying that it is basically same as the 7spd in the Carrera which uses the PDK case? I don't think so or where would the weight savings come from? And if true, it would be a bad idea to get rid of the 7th gear (you could make much better performance with 7 close ratios). And how does it shift so much better than the Carrera gearbox if it's basically the same (with the crazy mechanical mapping translator that is necessary with the PDK box to make the shift pattern in the correct order). I really think it is a totally different gearbox, but if you have more info please let me know.
07-19-2016, 03:14 PM
#51
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07-19-2016, 03:18 PM
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07-19-2016, 03:21 PM
#53
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get the classic 7speed MT
ditch the 7th gear adjust ratio and plug a
lightweight flywheel (as optional)
and you get the R gearbox
weight saving was the reason
to ditch the 7th gear not ratios which
can be modified
neither their marketing went so far as somebody here
ditch the 7th gear adjust ratio and plug a
lightweight flywheel (as optional)
and you get the R gearbox
weight saving was the reason
to ditch the 7th gear not ratios which
can be modified
neither their marketing went so far as somebody here
07-19-2016, 03:26 PM
#54
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1. Maybe there are some economies of scale by producing thousands of these cranks at one time.
2. Maybe the crank for the GT3 could be made from a less expensive material than the RS. Adding a small amount of stroke to the 3.8 crank doesn't "need" this material, I wouldn't think (though I'm sure it's better in some ways).
The rumor I've heard is that the 4.0 in the GT3 is even further developed in reliability from both the 991.1 RS and the GT3R race car (where the lessons were learned). If true, it should be really fantastic and its oiling beyond reproach.
07-19-2016, 03:27 PM
#55
Nordschleife Master
How do you define " the same " ? If the ratios are different and it comes with one gear less,how are they the same?! What does Porsche need to change in a manual gearbox so they can be defined as " different " in your opinion?
07-19-2016, 03:34 PM
#56
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Does somebody here really think that Porsche (suppliers)
designed a brand new manual gearbox
for the R ??
designed a brand new manual gearbox
for the R ??
07-19-2016, 03:42 PM
#57
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Whatever work they did to produce the box in the R, it clearly was intended to also be used on the 991.2 GT3 as well (and likely some other future models not yet known). So, several thousand units instead of 991 units.
07-19-2016, 03:44 PM
#58
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07-19-2016, 04:13 PM
#59
GT2 also.
07-19-2016, 04:18 PM
#60
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Many mention it would be a no brainier just to switch to 4.0l engine but remember that it comes at a increase in manufactureing cost (namely the crank). On the plus side it's very likely they have figured out this far along how to reduce the cost to produce the 4.0l engine through several different means (not uncommon at this point in production) but it's unlikely that the unobtanium crank has gotten that much less expensive in manufacturing terms and it's a major reason the RS engine is not produced at same cost as 3.8L in GT3.