What is the greatest GT3 engine ?
Discussion
I’m going to do this when able to ago at the PEC. Drive the 911R, 4.0RS and GT2 RS....see what all the fuss is about !
https://www.porsche.com/silverstone/en/experience/...
Ludicrously expensive for the time but it’s the only way I am going to drive any of those cars....and maybe help me decide whether they’re something I’d like to own one day. The idea of buying a “cheap” high mileage LHD 4.0 or R is also somewhat harder now there’s 20% import cost.....
https://www.porsche.com/silverstone/en/experience/...
Ludicrously expensive for the time but it’s the only way I am going to drive any of those cars....and maybe help me decide whether they’re something I’d like to own one day. The idea of buying a “cheap” high mileage LHD 4.0 or R is also somewhat harder now there’s 20% import cost.....
Cheib said:
I’m going to do this when able to ago at the PEC. Drive the 911R, 4.0RS and GT2 RS....see what all the fuss is about !
https://www.porsche.com/silverstone/en/experience/...
Ludicrously expensive for the time but it’s the only way I am going to drive any of those cars....and maybe help me decide whether they’re something I’d like to own one day. The idea of buying a “cheap” high mileage LHD 4.0 or R is also somewhat harder now there’s 20% import cost.....
Very tempted, for the same reasons plus, contrary to what some say, PEC has enough variety of tarmac to get a decent taste of a car.https://www.porsche.com/silverstone/en/experience/...
Ludicrously expensive for the time but it’s the only way I am going to drive any of those cars....and maybe help me decide whether they’re something I’d like to own one day. The idea of buying a “cheap” high mileage LHD 4.0 or R is also somewhat harder now there’s 20% import cost.....
Before I bought my car I did a similar thing, I drove 991.1 GT3 and RS, plus the 997 GT2. It was very useful - 991 is a great platform but was not the feeling of car I was after, but it was a great way to get that out of my system.
That 320 event (20 years of GT3) was really good, because I found using my own car on PEC very instructive. You can do stuff on the low friction circuit that you don’t get ample chance to do (legally) elsewhere and I gained some really valuable feedback.
Digga said:
That 320 event (20 years of GT3) was really good, because I found using my own car on PEC very instructive. You can do stuff on the low friction circuit that you don’t get ample chance to do (legally) elsewhere and I gained some really valuable feedback.
I’ve had my own GT3 on the PEC tracks on the Precision Day...as you say Digga you can do things there that you just can’t anywhere else. Driving up the Ice Hill drifting the car from lock to lock taught me a hell of a lot of about throttle control. 
hornbaek said:
I have had plenty of Porsches and the only one that will stay forever is the 997 GT3 RS 4.0. There is nothing that beats it.
And despite some of the reliability questions, it was rev limited to 9,500 ....I drove one at a Porsche Experience Day ... 3.6 / 3.8 / 4.0 997RS plus GT2RS. I was amazed at the torque of the 4.0l and at how the 2RS could be steered on the throttle ... so little lag ...
The 3.6 in the 996Gen1 was rev limited to 7,600 ... but P always knew that it had been tested to 9,000 and beyond ...
The latest 9A1 engines after problems were hobbled to 8600 in the 911R and only in the 991.2 were they released back to 9000rpm.
But not all these great engines were screamers, particularly not the GT2 and uber Turbos ...
So can anybody put their finger on the magic ?
Or is it rather an engine that can do something that it really shouldn't, and reliably keeps coming back for more ?
"You know you want to" ... ?
hornbaek said:
I have had plenty of Porsches and the only one that will stay forever is the 997 GT3 RS 4.0. There is nothing that beats it.
I don't really agree esp per bold. The 4.0 is a (very) good car but there's some sort of not entirely justified halo that has built up around it because of the price increases it has experienced due to the X/600 and 'last mezger' tag.
The chassis changes are not exceptional and easily replicated by the 3.8rs. the 4l engine is a bit more punchy especially mud range and allows for slightly lazy driving by not downshifting but imo not really all that much better than the 3.8rs in many respects.
isaldiri said:
hornbaek said:
I have had plenty of Porsches and the only one that will stay forever is the 997 GT3 RS 4.0. There is nothing that beats it.
I don't really agree esp per bold. The 4.0 is a (very) good car but there's some sort of not entirely justified halo that has built up around it because of the price increases it has experienced due to the X/600 and 'last mezger' tag.
The chassis changes are not exceptional and easily replicated by the 3.8rs. the 4l engine is a bit more punchy especially mud range and allows for slightly lazy driving by not downshifting but imo not really all that much better than the 3.8rs in many respects.
Got to say the latest rs engine is in another league over the good oh mezger,so the new gt3 engine should be good also.
ChrisW. said:
And despite some of the reliability questions, it was rev limited to 9,500 ....
I drove one at a Porsche Experience Day ... 3.6 / 3.8 / 4.0 997RS plus GT2RS. I was amazed at the torque of the 4.0l and at how the 2RS could be steered on the throttle ... so little lag ...
The 3.6 in the 996Gen1 was rev limited to 7,600 ... but P always knew that it had been tested to 9,000 and beyond ...
The latest 9A1 engines after problems were hobbled to 8600 in the 911R and only in the 991.2 were they released back to 9000rpm.
But not all these great engines were screamers, particularly not the GT2 and uber Turbos ...
So can anybody put their finger on the magic ?
Or is it rather an engine that can do something that it really shouldn't, and reliably keeps coming back for more ?
"You know you want to" ... ?
It’s the way it Howls at the top end of the NA mezger, can’t beat that.I drove one at a Porsche Experience Day ... 3.6 / 3.8 / 4.0 997RS plus GT2RS. I was amazed at the torque of the 4.0l and at how the 2RS could be steered on the throttle ... so little lag ...
The 3.6 in the 996Gen1 was rev limited to 7,600 ... but P always knew that it had been tested to 9,000 and beyond ...
The latest 9A1 engines after problems were hobbled to 8600 in the 911R and only in the 991.2 were they released back to 9000rpm.
But not all these great engines were screamers, particularly not the GT2 and uber Turbos ...
So can anybody put their finger on the magic ?
Or is it rather an engine that can do something that it really shouldn't, and reliably keeps coming back for more ?
"You know you want to" ... ?
nebpor said:
Is there much between the engine in a 996.2GT3 and a 997.1GT3? I am at least a year, probably two, away from thinking about buying as kids still fit in the back of my 996T at the moment, once they can't then I will move to a GT3, unless the prices go too crazy!
They raised the rev limit, added Variocam and there were significant revisions to the induction system, which is quite trick and very clever and is pretty much the same on all 997 GT platform, including the 4 litre.The 3.8 and 4.0 RS cars had different air filter housings and arrangements, but the basic design of the induction system was the same throughout the 997 platform GT cars.
This video relates to the 992 GT3 engine but explains the intake system: https://youtu.be/8xByM10KM2k?t=346
Yellow491 said:
Got to say the latest rs engine is in another league over the good oh mezger,so the new gt3 engine should be good also.
I guess my bar for 'another league' might be a bit different from yours I have to admit 
there isn't imo all that much difference between the GT3 engines, at heart they are still high revving normally aspirated flat 6s. The 4l 9A1 in the gen2 991s is a pretty good unit (and it better be coming years after the mezgers) but overall.... nice but hardly life changing. Especially compared to the 4l Mezger. One 500-ish PS high revving NA engine isn't all that different to another give or take a little bit of extra power/torque/revs....
Not just power but improvement in Torque curve and spread of band ....
Interesting that the new Ring time is 1 minute faster that the 996 GT3...... yes tyres , wider track Blah Blah ....but 1 minute !!...
I remember climbing the hill to the first carousel in my 964 RS and a then brand new 996 GT3 , blasted past and I thought amazing must get one , sadly in was in the barrier later .
Interesting that the new Ring time is 1 minute faster that the 996 GT3...... yes tyres , wider track Blah Blah ....but 1 minute !!...
I remember climbing the hill to the first carousel in my 964 RS and a then brand new 996 GT3 , blasted past and I thought amazing must get one , sadly in was in the barrier later .
nebpor said:
Thank you - quite comprehensive then!
I got that slightly wrong; 996 had Variocam on intake but not Varioram (intake manifold flaps).https://www.youtube.com/watch?v=aI4rEVEJpJw
hunter 66 said:
Not just power but improvement in Torque curve and spread of band ....
Interesting that the new Ring time is 1 minute faster that the 996 GT3...... yes tyres , wider track Blah Blah ....but 1 minute !!...
I remember climbing the hill to the first carousel in my 964 RS and a then brand new 996 GT3 , blasted past and I thought amazing must get one , sadly in was in the barrier later .
A lot of hype and pr mate,track has changed also,let alone tyres.Interesting that the new Ring time is 1 minute faster that the 996 GT3...... yes tyres , wider track Blah Blah ....but 1 minute !!...
I remember climbing the hill to the first carousel in my 964 RS and a then brand new 996 GT3 , blasted past and I thought amazing must get one , sadly in was in the barrier later .
I remember some pr on Prescott hillclimb with the new elva to be,i informed them they had to find 2 secs to beat a old porsche
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