GT3RS Differences
04-12-2004, 09:28 PM
#1
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GT3RS Differences
Just received a copy of the Porsche "Service Information Technik" on the GT3RS and thought I would post differences between RS and standard GT3 I find as I read through the book:
1. Engine has "optimized geometry" of intake ports and is designated M79/80 type number
2. The data record in the ME 7.8 Motronic is designated as "GT3 RS EU4" for programming of the control unit
3. There is a modified air duct below the rear wing to provide a ram effect at high vehicle speeds
4. The exhaust pipe tips are the same as the 40 years 911
5. Spark plugs are special M12X1.25 thread with 2 earth electrodes
6. The G96/90 gearbox is the same as normal GT3
7. Single mass flywheel fitted instead of dual mass
8. The RS front wheel carrier is completely different and is a hollow cast aluminum part and has 2 bolts instead of one to secure the strut, also has 6 bolts instead of 4 to hold in the wheel bearing. The mounting points for the control arms and track rods have been lowered relative to standard GT3.
9. At this point things get a little funny in the book, a picture of the rear spring strut is shown where I would expect the front strut to be shown and the text states that the spring rate is 45 N/mm which is what I would expect a front spring to be. There is not other mention of spring rates or other shock spring comments.
10. The RS rear wheel carrier is also completely new and is also a hollow sand casting with lateral and tie rod mounting points lowered as in the front wheel carrier. The wheel bearing is held in with 6 bolts instead of 4 here as in front.
11. The rear lower control arm has shims to adjust camber like the front and the eccentric to adjust camber has a longer travel so the slot for it is wider on the center carrier.
12. The stabilizers are same as the normal GT3 just set harder.
13. Carbon fiber front hood painted on top only inside is carbon look Only one gas strut to support.
14. Larger carbon fiber rear wing.
15. Carrara White color only with choice of red or blue emblems with matching red or blue wheel centers
16. The front bumper cover has slots at the top which duct the center radiator, wire mesh grills are fitted in front of the air intakes and at the outlets.
17. Polycarbonate rear window.
18. Carbon look rear view mirrors
19. Red or blue seat belts to match exterior logos.
20. Interior as GT3 clubsport but with Alcantara steering wheel, gear lever and handbrake sewn in red or blue to match logos
21. No glovebox
22. No cupholders
23. Door panels with storage pockets instead of loudspeakers
24. No air conditioning possible
I'm at the end of the book, I hope I havn't posted anything already done.
1. Engine has "optimized geometry" of intake ports and is designated M79/80 type number
2. The data record in the ME 7.8 Motronic is designated as "GT3 RS EU4" for programming of the control unit
3. There is a modified air duct below the rear wing to provide a ram effect at high vehicle speeds
4. The exhaust pipe tips are the same as the 40 years 911
5. Spark plugs are special M12X1.25 thread with 2 earth electrodes
6. The G96/90 gearbox is the same as normal GT3
7. Single mass flywheel fitted instead of dual mass
8. The RS front wheel carrier is completely different and is a hollow cast aluminum part and has 2 bolts instead of one to secure the strut, also has 6 bolts instead of 4 to hold in the wheel bearing. The mounting points for the control arms and track rods have been lowered relative to standard GT3.
9. At this point things get a little funny in the book, a picture of the rear spring strut is shown where I would expect the front strut to be shown and the text states that the spring rate is 45 N/mm which is what I would expect a front spring to be. There is not other mention of spring rates or other shock spring comments.
10. The RS rear wheel carrier is also completely new and is also a hollow sand casting with lateral and tie rod mounting points lowered as in the front wheel carrier. The wheel bearing is held in with 6 bolts instead of 4 here as in front.
11. The rear lower control arm has shims to adjust camber like the front and the eccentric to adjust camber has a longer travel so the slot for it is wider on the center carrier.
12. The stabilizers are same as the normal GT3 just set harder.
13. Carbon fiber front hood painted on top only inside is carbon look Only one gas strut to support.
14. Larger carbon fiber rear wing.
15. Carrara White color only with choice of red or blue emblems with matching red or blue wheel centers
16. The front bumper cover has slots at the top which duct the center radiator, wire mesh grills are fitted in front of the air intakes and at the outlets.
17. Polycarbonate rear window.
18. Carbon look rear view mirrors
19. Red or blue seat belts to match exterior logos.
20. Interior as GT3 clubsport but with Alcantara steering wheel, gear lever and handbrake sewn in red or blue to match logos
21. No glovebox
22. No cupholders
23. Door panels with storage pockets instead of loudspeakers
24. No air conditioning possible
I'm at the end of the book, I hope I havn't posted anything already done.
Last edited by Cupcar; 04-12-2004 at 09:46 PM.
04-12-2004, 10:19 PM
#2
Three Wheelin'
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Well, I'm actually happy I have a regualar one!
Looks to me like the only parts I feel I'm missing out on are the new wheel mount and suspension parts, easy upgrades that I may well do at a later date.
I'm thrilled about my aircon, living here in SoCal no aircon is just not an option unless it is a dedicated track only car. I know this will really tick off the purists, but I love the cup holder! It is a really clever minimal design, weighs nothing, totally vanishes and is perfectly functional. It fits those 'sport top' water bottles perfectly, which is great, coz you can nip around the canyon twisties without a drop going anywhere but in your mouth when you need it.
The stereo on the other hand, I would have deleted given the chance, it really rubbish, and I like the idea of the extra storage in the doors too.
There is one other detail I'm happy to be missing, the ugleeee RS paint job. It may be traditional, but that doesn't make it pretty!
I'm thrilled about my aircon, living here in SoCal no aircon is just not an option unless it is a dedicated track only car. I know this will really tick off the purists, but I love the cup holder! It is a really clever minimal design, weighs nothing, totally vanishes and is perfectly functional. It fits those 'sport top' water bottles perfectly, which is great, coz you can nip around the canyon twisties without a drop going anywhere but in your mouth when you need it.
The stereo on the other hand, I would have deleted given the chance, it really rubbish, and I like the idea of the extra storage in the doors too.
There is one other detail I'm happy to be missing, the ugleeee RS paint job. It may be traditional, but that doesn't make it pretty!
04-12-2004, 11:59 PM
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Burning Brakes
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Cupcar: A/C was added as a no charge option to the GT3RS shortly after production began. Seems those Europeans are every bit the wusses we Americans are when it comes to driving comfort. 
04-13-2004, 06:05 AM
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Great Info....I doupt upgrading to the RS suspension would be a real option though - there are a lot of parts and i believe it would get prohibitaly expensive very quick - would be interesting though.
Btw, Cupcar... Sepang was great!!
Btw, Cupcar... Sepang was great!!
04-13-2004, 06:39 PM
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A few things to add.
RHD cars keep the Cup holders and Glovebox (porsche had run out of units without so it was cheaper to just use what they had)
Aircon is an option.
It would not be possible to upgrade a GT3 to GT3RS suspension as the pick up points are differant.
The reason for the cars being is the revised rear geometry which eliminates rear bump steer and makes the car that much quicker on the track.
Or it would have if the springs and dampers were adjustable...
Still faster than a standard car but become a bit snappy on or near the limit, easily sorted with the fitment of JRZ suspension but then the car becomes a bit compromised for the road.
As with all things, you pay your money you makes your choice.
Colour scheme looks better in real life than in pictures. Anyway I cant see it from the drivers seat
P>
RHD cars keep the Cup holders and Glovebox (porsche had run out of units without so it was cheaper to just use what they had)
Aircon is an option.
It would not be possible to upgrade a GT3 to GT3RS suspension as the pick up points are differant.
The reason for the cars being is the revised rear geometry which eliminates rear bump steer and makes the car that much quicker on the track.
Or it would have if the springs and dampers were adjustable...
Still faster than a standard car but become a bit snappy on or near the limit, easily sorted with the fitment of JRZ suspension but then the car becomes a bit compromised for the road.
As with all things, you pay your money you makes your choice.
Colour scheme looks better in real life than in pictures. Anyway I cant see it from the drivers seat
P>
04-13-2004, 07:43 PM
#7
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Mr. RS-
Congratulations on your GT3RS, I am insanely jealous.
The pages describing the suspension changes note that the pick up points change mainly at the front and rear hub carriers. The only change listed at the central chassis pick up points is a widened adjustor slot eccentric clearance, not a change in it's position.
This would indicate to me that essentially the entire GT3 RS suspension could be installed easily on a standard GT3 by just changing the springs/shocks, track rods and hub carriers, something easily done.
The only thing not then achieved is the complete range of camber adjustment in the rear if one choose not to install the part with the widened slot at the rear lower, inner pick up points.
This is just going by my book, not looking at a car or parts list.
Congratulations on your GT3RS, I am insanely jealous.
The pages describing the suspension changes note that the pick up points change mainly at the front and rear hub carriers. The only change listed at the central chassis pick up points is a widened adjustor slot eccentric clearance, not a change in it's position.
This would indicate to me that essentially the entire GT3 RS suspension could be installed easily on a standard GT3 by just changing the springs/shocks, track rods and hub carriers, something easily done.
The only thing not then achieved is the complete range of camber adjustment in the rear if one choose not to install the part with the widened slot at the rear lower, inner pick up points.
This is just going by my book, not looking at a car or parts list.
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04-13-2004, 07:51 PM
#8
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Originally posted by Cupcar
This is just going by my book, not looking at a car or parts list.
This is just going by my book, not looking at a car or parts list.
04-13-2004, 08:35 PM
#9
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Attention Gert, 1 see a potential hot selling kit here......
This would indicate to me that essentially the entire GT3 RS suspension could be installed easily on a standard GT3 by just changing the springs/shocks, track rods and hub carriers, something easily done.
This would indicate to me that essentially the entire GT3 RS suspension could be installed easily on a standard GT3 by just changing the springs/shocks, track rods and hub carriers, something easily done.
04-13-2004, 11:47 PM
#11
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The changes for the GT3RS street car were primarily to homologate changes they wanted for the GT3RSR race car. I don't recall reading that any of the GT3RS changes appeared in the '03 built GT3 Cup cars but the '04 build cars are another question.
Last edited by Steve in FL; 04-14-2004 at 12:26 AM.
04-13-2004, 11:59 PM
#12
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Originally posted by macfly
Attention Gert, 1 see a potential hot selling kit here......
This would indicate to me that essentially the entire GT3 RS suspension could be installed easily on a standard GT3 by just changing the springs/shocks, track rods and hub carriers, something easily done.
Attention Gert, 1 see a potential hot selling kit here......
This would indicate to me that essentially the entire GT3 RS suspension could be installed easily on a standard GT3 by just changing the springs/shocks, track rods and hub carriers, something easily done.
That does not sound like a good bang for your buck and would make minimal impact on track times except for the most exceptional drivers...ie pros, imho...
04-14-2004, 12:24 AM
#13
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Wow, if that is really the cost it is insane, but from the list of parts I was expecting something more in the 5-8K range. Guess I hadn't fully grasped why Porsche is the most profitable company yet, it kills you on the parts!
04-14-2004, 12:31 AM
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GT3RS parts were initially carrying a high premium but I think they've dropped recently. At least the rear wing and the interior alcantra parts are now much cheaper from Gert.
04-14-2004, 12:42 AM
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Rennman-
I don't know which hub carriers the Supercup cars are using, I think Steve in FL has it right, the RS is a homologation special for a constellation of parts that are legal to use on an RSR.
Would be interesting to know what the latest build Supercups are using as it would mean conversion kits would be in the works for teams to upgrade spec if the RS suspension is used.
Regards, BG
I don't know which hub carriers the Supercup cars are using, I think Steve in FL has it right, the RS is a homologation special for a constellation of parts that are legal to use on an RSR.
Would be interesting to know what the latest build Supercups are using as it would mean conversion kits would be in the works for teams to upgrade spec if the RS suspension is used.
Regards, BG