Powerband 991.1 N/A
04-13-2018, 01:50 PM
#16
Rennlist Member
This makes me even more excited about going for a drive this weekend!
04-13-2018, 03:47 PM
#18
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The band is the same just decreased overall about 10%. Look up the dyno in the link I supplied. That is an uncorrected dyno. You can clearly see a dip when the car gets on cam and this explains a lot about why the car pulls so much more at higher RPMs.
I've been looking for someone to let me play with their base on a dyno so see if the cam is as aggressive - my hypothesis from driving one is that it is not and supports why many feel that the 3.4 is free-er revving and such a sweet engine. Think of the extra .4L of displacement as the extra torque and the more aggressive cam as the primary drivers for the extra power in the 3.8. This is just my theory and have not proven it as of yet.
I've been looking for someone to let me play with their base on a dyno so see if the cam is as aggressive - my hypothesis from driving one is that it is not and supports why many feel that the 3.4 is free-er revving and such a sweet engine. Think of the extra .4L of displacement as the extra torque and the more aggressive cam as the primary drivers for the extra power in the 3.8. This is just my theory and have not proven it as of yet.
04-13-2018, 04:14 PM
#19
Three Wheelin'
The band is the same just decreased overall about 10%. Look up the dyno in the link I supplied. That is an uncorrected dyno. You can clearly see a dip when the car gets on cam and this explains a lot about why the car pulls so much more at higher RPMs.
I've been looking for someone to let me play with their base on a dyno so see if the cam is as aggressive - my hypothesis from driving one is that it is not and supports why many feel that the 3.4 is free-er revving and such a sweet engine. Think of the extra .4L of displacement as the extra torque and the more aggressive cam as the primary drivers for the extra power in the 3.8. This is just my theory and have not proven it as of yet.
I've been looking for someone to let me play with their base on a dyno so see if the cam is as aggressive - my hypothesis from driving one is that it is not and supports why many feel that the 3.4 is free-er revving and such a sweet engine. Think of the extra .4L of displacement as the extra torque and the more aggressive cam as the primary drivers for the extra power in the 3.8. This is just my theory and have not proven it as of yet.
04-13-2018, 08:42 PM
#20
Here is a real one for the S: https://rennlist.com/forums/991/1038...rs-review.html
Last edited by RRDnA; 04-13-2018 at 09:19 PM.
04-14-2018, 08:31 AM
#22
That is a very interesting graph. I don't think you need a graph to know the 2 motor's output is totally different, but this shows how different.
04-14-2018, 10:38 AM
#23
Charts and numbers tell the statistical side of the story. Once behind the wheel, I enjoy my NA car more than the Turbo one. Both nice for different reasons but NA reigns supreme.
Best to own both is possible
Best to own both is possible
04-14-2018, 10:55 AM
#24
My 991.2 GTS and 991.2 GT3 should be the best of both worlds! I have to admit that the 991.2 engine fixed all my shortcomings with the previous NA engines that felt a little anemic down low. Extra torque almost always wins for me.
04-14-2018, 12:05 PM
#25
Rennlist Member
The 996 3.4 engine doesn’t “come alive” like other engines. It’s slow and steady, but does get a little stronger 4,000 and up. When on the track, as long as it’s kept above 4,000, it’s not slow.
04-14-2018, 12:51 PM
#26
The advantage of a higher revving engine is you can be in a lower gear over the power band and have greater acceleration due to the gearing. The disadvantage are you need to rev the engine an it's generally a short power band
04-14-2018, 01:01 PM
#27
Congrats on the gt3! You are spot on in that you have the best of both worlds. I just traded my .2 4GTS 7mt for a 50th 7mt with some ambivalence. I almost kept the .2 but the timing is not right. I felt I had to jump on the 50th because it was a bit of a unicorn that wouldn’t be available again anytime soon if ever. I plan to keep the 50th long-term and get back into a 991.2 (I miss the torque!) or 992.1 in the medium term and rotate cars for the different, albeit awesome, driving experience they both offer.
04-14-2018, 01:17 PM
#28
Congrats on the gt3! You are spot on in that you have the best of both worlds. I just traded my .2 4GTS 7mt for a 50th 7mt with some ambivalence. I almost kept the .2 but the timing is not right. I felt I had to jump on the 50th because it was a bit of a unicorn that wouldn’t be available again anytime soon if ever. I plan to keep the 50th long-term and get back into a 991.2 (I miss the torque!) or 992.1 in the medium term and rotate cars for the different, albeit awesome, driving experience they both offer.
04-14-2018, 03:25 PM
#29
Rennlist Member
It's all about HP and gearing for acceleration. HP is the sum of the torque. The best way to think about the Torque curve is the force from each explosion, the HP is the sum of these explosions over a given time, the more revs the more explosions. The other factor is the gearing, if you have a low revving car then you will need a higher gear and tat will reduce the power to the rear wheels, a lower gear will increase it.
The advantage of a higher revving engine is you can be in a lower gear over the power band and have greater acceleration due to the gearing. The disadvantage are you need to rev the engine an it's generally a short power band
The advantage of a higher revving engine is you can be in a lower gear over the power band and have greater acceleration due to the gearing. The disadvantage are you need to rev the engine an it's generally a short power band
04-14-2018, 03:40 PM
#30
Originally Posted by reacher
My 991.2 GTS and 991.2 GT3 should be the best of both worlds! I have to admit that the 991.2 engine fixed all my shortcomings with the previous NA engines that felt a little anemic down low. Extra torque almost always wins for me.
My "turbo" car is a BMW 535GT, not even close to the 911 so obviously I like the GTS more for multiple reasons.
I suspect in your case the differences are much more difficult to discern.
I'm off for a ride, vroom, vroom!!