997/996 GT3 dynamics

997/996 GT3 dynamics

Author
Discussion

Yellow491

2,922 posts

119 months

Thursday 31st January 2019
quotequote all
That pic of the gt3 cup looks wicked,something about the first design shape always looking the best,before they changed to the butt ugly fryed egg lights.The boxter was the same,the original looked so pure and simple.
Cup engine only cost that if you have to throw away most of the parts on a rebuild or need to follow porsche strict guide lines,but thats for actual race engines raceing not track day exploits.
A gt3 road engine can cost similar if you have to replace lots of parts,i just had to pay 1000e per conrod,the crank had a crack in it invisible to the naked eye and so on,just stay off the last 1000 rpm on track days,a cup engine will then last as long as road gt3 engine or longer.

hunter 66

3,905 posts

220 months

Thursday 31st January 2019
quotequote all
Yes Yellow , in theory

noneedtolift

846 posts

223 months

Thursday 31st January 2019
quotequote all
MDL111 said:
no clue on hours. was told
c 25-30k for a comprehensive engine rebuild and
c. 2-3k for work hours on the transmission, including parts anything from 3k to 15k depending on what needs to be replaced

the above car mentions €52k spent, but I don't have the invoice breakdown yet - will give details once/if they send it to me
For cars MY 2004 manual says: change of crown wheel & pinion after 8 tkm is recommended, check of all bearings after 5 tkm, recommended change of pinion bearing after 5 tkm, recomended change of gear linkages and gearchange- mechanism after 10 tkm (the lever-box is meant). LSD fricition plates change according to wear. Dismantle & check Suspension after 30 hrs, replace drive shafts and Wheel bearings and fuel filter

For the MY 2002 cars it says complete overhaul of the gearbox after 30hrs other than that more or less the same. I would imagine that most 2002 cars will by now have 2004 gearbox internals though...

Neither manual states anything about engine life and from my experience they go on for a very long time if treated right.

Been doing trackdays in 996 and 997 Cups for a while now and am now in a 2016 991 Cup. 996 was always hassle free, very close to the road car really. Parts have become expensive though, PAG has upped the Prices considerably over the past years.

Different world and there's no turning back even if I really enjoy the GT3 road cars as well. Can only recommend the leap to anyone who is serious About his driving. Incidentially I know both the previous owner as well as the garage who sells the early 996 on mobile.de (am Munich based).

Happy to help anyone if I can.



Edited by noneedtolift on Thursday 31st January 14:47

MDL111

6,932 posts

177 months

Thursday 31st January 2019
quotequote all
The 996.1 I linked to above had to be completely rebuilt as it went ass first into a wall - therefore the high cost

noneedtolift

846 posts

223 months

Thursday 31st January 2019
quotequote all
MDL111 said:
The 996.1 I linked to above had to be completely rebuilt as it went ass first into a wall - therefore the high cost
That is correct, GT3 Kurve Hockenheimring a fair while back.

isaldiri

18,570 posts

168 months

Thursday 31st January 2019
quotequote all
LaSource said:
Don't think you will need to do much to a 996 GT3 apart from basic weight reduction....unless you go mad on it.
Yup that's part of my point I guess. Strip out some of the interior, rose joints, weld in the cage and you're pretty much there!

Slippydiff

14,828 posts

223 months

Thursday 31st January 2019
quotequote all
isaldiri said:
IIRC, I was told the Cup engine ECU maps to running at track speeds and doesn't like being used at road rpms at all, especially say being stuck in traffic. Have to admit I personally wouldn't try to convert a Cup to road use but rather get a 996 gt3 and strip it out to try to match the Cup if I were going to try to go down that route.
The 997 Cup ECU is a Bosch Motorsport part, and whilst the mapping isn’t ideal for road use, the real issue is the lack of Variocam in the Cup engines. Add high lift, long duration cams into the mix (and in the 997 a small, almost non-existent flywheel, a straight cut sequential box with the backlash that straight cut gears can entail, along with a 5 1/2” multi-plate sintered clutch, and you have a recipe for a rather unfriendly road car ... or at least one to avoid using in heavy traffic.
However if traffic free, high speed, early morning, cross country thrashes are your thing, a 997 Cup would be suitably visceral weapon of choice ... :

https://m.youtube.com/watch?v=gWG6ZJ1vT8c

A Cup engine driven on the road and tracked occasionally (avoiding the last 1k rpm of the Rev range, should last many hours without needing a rebuild.
Lots of precautionary oil changes and regular leakdown tests, and you’ll see several hundred hours use out of one.
Use them as they were built to be used, ie all the revs, all the time, and flat shift (the 996) and the bills will be big, regular and come thick and fast ...



MDL111

6,932 posts

177 months

Thursday 31st January 2019
quotequote all
noneedtolift said:
MDL111 said:
no clue on hours. was told
c 25-30k for a comprehensive engine rebuild and
c. 2-3k for work hours on the transmission, including parts anything from 3k to 15k depending on what needs to be replaced

the above car mentions €52k spent, but I don't have the invoice breakdown yet - will give details once/if they send it to me
For cars MY 2004 manual says: change of crown wheel & pinion after 8 tkm is recommended, check of all bearings after 5 tkm, recommended change of pinion bearing after 5 tkm, recomended change of gear linkages and gearchange- mechanism after 10 tkm (the lever-box is meant). LSD fricition plates change according to wear. Dismantle & check Suspension after 30 hrs, replace drive shafts and Wheel bearings and fuel filter

For the MY 2002 cars it says complete overhaul of the gearbox after 30hrs other than that more or less the same. I would imagine that most 2002 cars will by now have 2004 gearbox internals though...

Neither manual states anything about engine life and from my experience they go on for a very long time if treated right.

Been doing trackdays in 996 and 997 Cups for a while now and am now in a 2016 991 Cup. 996 was always hassle free, very close to the road car really. Parts have become expensive though, PAG has upped the Prices considerably over the past years.

Different world and there's no turning back even if I really enjoy the GT3 road cars as well. Can only recommend the leap to anyone who is serious About his driving. Incidentially I know both the previous owner as well as the garage who sells the early 996 on mobile.de (am Munich based).

Happy to help anyone if I can.



Edited by noneedtolift on Thursday 31st January 14:47
Thank you for the very informative post and the offer - missed your post earlier.

Am also Munich based (although the car would mostly reside close to Salzburg, so I can easily get to the Salzburgring and Red Bull ring) and don't have to navigate city traffic.

I spoke to a-workx earlier this week and they will check the car(s) for me prior to making a purchase decision.

I like the early 996 as I think it looks better than the 996.2, I assume if it has been rebuilt correctly and is straight, the accident should not be of too much concern? The garage selling it also did the rebuild of the car.


MDL111

6,932 posts

177 months

Thursday 31st January 2019
quotequote all
Slippydiff said:
isaldiri said:
IIRC, I was told the Cup engine ECU maps to running at track speeds and doesn't like being used at road rpms at all, especially say being stuck in traffic. Have to admit I personally wouldn't try to convert a Cup to road use but rather get a 996 gt3 and strip it out to try to match the Cup if I were going to try to go down that route.
The 997 Cup ECU is a Bosch Motorsport part, and whilst the mapping isn’t ideal for road use, the real issue is the lack of Variocam in the Cup engines. Add high lift, long duration cams into the mix (and in the 997 a small, almost non-existent flywheel, a straight cut sequential box with the backlash that straight cut gears can entail, along with a 5 1/2” multi-plate sintered clutch, and you have a recipe for a rather unfriendly road car ... or at least one to avoid using in heavy traffic.
However if traffic free, high speed, early morning, cross country thrashes are your thing, a 997 Cup would be suitably visceral weapon of choice ... :

https://m.youtube.com/watch?v=gWG6ZJ1vT8c

A Cup engine driven on the road and tracked occasionally (avoiding the last 1k rpm of the Rev range, should last many hours without needing a rebuild.
Lots of precautionary oil changes and regular leakdown tests, and you’ll see several hundred hours use out of one.
Use them as they were built to be used, ie all the revs, all the time, and flat shift (the 996) and the bills will be big, regular and come thick and fast ...
I think that 997 was for sale a few years ago - can't remember the price but somewhere in the 65-80k range I seem to remember. I was really tempted, but the running costs scared me off at the timen (and I did not do track days, so it would have been a bit of a waste probably)

BrotherMouzone

3,169 posts

174 months

Thursday 31st January 2019
quotequote all
MDL111,

Not sure if you’ve read this thread; a PHer’s journey from buying to racing a Cup. Great thread which may or may not be useful to you RE running one on the road.

https://www.pistonheads.com/gassing/topic.asp?h=0&...


MDL111

6,932 posts

177 months

Thursday 31st January 2019
quotequote all
BrotherMouzone said:
MDL111,

Not sure if you’ve read this thread; a PHer’s journey from buying to racing a Cup. Great thread which may or may not be useful to you RE running one on the road.

https://www.pistonheads.com/gassing/topic.asp?h=0&...
Thank you - read that a while back but a good reminder to revisit it

Digga

40,316 posts

283 months

Friday 1st February 2019
quotequote all
Slippydiff said:
The 997 Cup ECU is a Bosch Motorsport part, and whilst the mapping isn’t ideal for road use, the real issue is the lack of Variocam in the Cup engines. Add high lift, long duration cams into the mix (and in the 997 a small, almost non-existent flywheel, a straight cut sequential box with the backlash that straight cut gears can entail, along with a 5 1/2” multi-plate sintered clutch, and you have a recipe for a rather unfriendly road car ... or at least one to avoid using in heavy traffic.
However if traffic free, high speed, early morning, cross country thrashes are your thing, a 997 Cup would be suitably visceral weapon of choice ... :

https://m.youtube.com/watch?v=gWG6ZJ1vT8c
hehe Ace! Love it.

Sounds wky as a bag of knackers. Proper, undiluted Mezger racket. thumbup

Slippydiff

14,828 posts

223 months

Friday 1st February 2019
quotequote all
Digga said:
hehe Ace! Love it.

Sounds wky as a bag of knackers. Proper, undiluted Mezger racket. thumbup
More here :

https://m.youtube.com/watch?v=nzmag2hdiU8&t=32...

Some softer suspension and a decent set of earplugs should sort things biggrin

And to make things easier still, one of these :

http://www.autometricsmotorsports.com/tech/2013/04...

https://m.youtube.com/watch?v=4zZk3lhw1Lc

Mezger racket ? Here you go :

https://m.youtube.com/watch?v=QFILtA8Icnk

Edited by Slippydiff on Friday 1st February 09:13

Digga

40,316 posts

283 months

Friday 1st February 2019
quotequote all
Awesome. What a noise!

r4_rick

452 posts

215 months

Monday 4th February 2019
quotequote all
Someone was saying they wanted a road legal track car, Paragon posted up on FB that they are selling their quite well known, Blue/Peppermint 996, someone posted that it was road legal....

seawise

2,146 posts

206 months

Monday 4th February 2019
quotequote all
r4_rick said:
Someone was saying they wanted a road legal track car, Paragon posted up on FB that they are selling their quite well known, Blue/Peppermint 996, someone posted that it was road legal....
yes, their early 996 C2 race car which has strong competition history, is road legal and is currently for sale as Mark isn't planning on defending his title this season.

Digga

40,316 posts

283 months

Monday 4th February 2019
quotequote all
r4_rick said:
Someone was saying they wanted a road legal track car, Paragon posted up on FB that they are selling their quite well known, Blue/Peppermint 996, someone posted that it was road legal....
IIRC it's not a GT3 but Mark Sumpter's race car, so a pretty well sorted 911 nonetheless.

noneedtolift

846 posts

223 months

Monday 4th February 2019
quotequote all
MDL111 said:
noneedtolift said:
MDL111 said:
no clue on hours. was told
c 25-30k for a comprehensive engine rebuild and
c. 2-3k for work hours on the transmission, including parts anything from 3k to 15k depending on what needs to be replaced

the above car mentions €52k spent, but I don't have the invoice breakdown yet - will give details once/if they send it to me
For cars MY 2004 manual says: change of crown wheel & pinion after 8 tkm is recommended, check of all bearings after 5 tkm, recommended change of pinion bearing after 5 tkm, recomended change of gear linkages and gearchange- mechanism after 10 tkm (the lever-box is meant). LSD fricition plates change according to wear. Dismantle & check Suspension after 30 hrs, replace drive shafts and Wheel bearings and fuel filter

For the MY 2002 cars it says complete overhaul of the gearbox after 30hrs other than that more or less the same. I would imagine that most 2002 cars will by now have 2004 gearbox internals though...

Neither manual states anything about engine life and from my experience they go on for a very long time if treated right.

Been doing trackdays in 996 and 997 Cups for a while now and am now in a 2016 991 Cup. 996 was always hassle free, very close to the road car really. Parts have become expensive though, PAG has upped the Prices considerably over the past years.

Different world and there's no turning back even if I really enjoy the GT3 road cars as well. Can only recommend the leap to anyone who is serious About his driving. Incidentially I know both the previous owner as well as the garage who sells the early 996 on mobile.de (am Munich based).

Happy to help anyone if I can.



Edited by noneedtolift on Thursday 31st January 14:47
Thank you for the very informative post and the offer - missed your post earlier.

Am also Munich based (although the car would mostly reside close to Salzburg, so I can easily get to the Salzburgring and Red Bull ring) and don't have to navigate city traffic.

I spoke to a-workx earlier this week and they will check the car(s) for me prior to making a purchase decision.

I like the early 996 as I think it looks better than the 996.2, I assume if it has been rebuilt correctly and is straight, the accident should not be of too much concern? The garage selling it also did the rebuild of the car.
Cool, I drive the Red Bull Ring once or twice a year (997 as I have no RBR footage in the 991: https://vimeo.com/165773788) and quite like it. Salzburgring gets a bit old after a couple of days, also quite easily to kill yourself there….

If you don't already you should know that Nico from A-Workx and David from Cartech know each other quite well but are in competition so you should be ok with A-Workx checking on it smile

Good rebuild on that car I personally think!


JMo22

99 posts

179 months

Monday 4th February 2019
quotequote all
Took my 996.1 GT3 to Brands last month. Just a phenomenal car - every part of the car just feels so perfectly balanced and it felt as though it could just pound around all day.

The feeling when you nailed Paddock Hill bend and it grazed the tarmac at the bottom with the Mezger engine heading towards the red line and then H&T into druids was pure motoring nirvana!




Joehow

589 posts

115 months

Monday 4th February 2019
quotequote all
JMo22 said:
Took my 996.1 GT3 to Brands last month. Just a phenomenal car - every part of the car just feels so perfectly balanced and it felt as though it could just pound around all day.

The feeling when you nailed Paddock Hill bend and it grazed the tarmac at the bottom with the Mezger engine heading towards the red line and then H&T into druids was pure motoring nirvana!



Dreamy that!