Gt2rs engine vs turbo S... Known differences?
#1
Burning Brakes
Thread Starter
Gt2rs engine vs turbo S... Known differences?
Hi all,
Just a bit curious and can't find much info out there. I get it, some basics, ie tune, intercoolers, turbos, exhaust, intake all different but what changes are there to the internals?
Point me to some threads... Just want to read and understand. Ty.
Just a bit curious and can't find much info out there. I get it, some basics, ie tune, intercoolers, turbos, exhaust, intake all different but what changes are there to the internals?
Point me to some threads... Just want to read and understand. Ty.
#2
Burning Brakes
#3
From what I've read, there aren't any internal changes, correct me if I'm wrong
#4
Addict
Rennlist Member
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This video might help answer your question:
https://www.motor1.com/news/295812/a...he-911-gt2-rs/
https://www.motor1.com/news/295812/a...he-911-gt2-rs/
I guess that must be a result of oil hot spots (as oil passes through turbochargers, perhaps?)
Still not aware of any internal differences to Turbo.
#5
Rennlist Member
Porsche lists the GT2rs compression ratio as 9:1 vs 9.8:1 for the Turbo/Turbo S so something's different......
#6
Addict
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#7
Rennlist Member
These are the features listed in the Technical presentation for the GT2RS compared to the 991.2 Turbo S:
- Modified crankcase
- Bespoke pistons
- Bigger turbochargers
- Multitube airfilter
- Enlarged air ducts
- High-performance cooling system
- Titanium sport exhaust system
- 67mm compressor and 55mm turbine (vs. Turbo S 58/48)
- The headers have a 25% enlarged cross-section
- Airbox with multitube maximizes surface area, increases airflow and the packaging is smaller
- Intercoolers have 27% more airflow thanks to new ducting and position
- Intercoolers are 15% larger
- Water vaporization system increases the intercooler efficiency by another 20%, and reduces air intake temperature by up to 70 degrees F
It is not a RWD 991.2 Turbo S, it is a 991.2 GT3RS with a GT engine evolved from the 991.2 Turbo S, and an unique PDK transmission as well.
- Modified crankcase
- Bespoke pistons
- Bigger turbochargers
- Multitube airfilter
- Enlarged air ducts
- High-performance cooling system
- Titanium sport exhaust system
- 67mm compressor and 55mm turbine (vs. Turbo S 58/48)
- The headers have a 25% enlarged cross-section
- Airbox with multitube maximizes surface area, increases airflow and the packaging is smaller
- Intercoolers have 27% more airflow thanks to new ducting and position
- Intercoolers are 15% larger
- Water vaporization system increases the intercooler efficiency by another 20%, and reduces air intake temperature by up to 70 degrees F
It is not a RWD 991.2 Turbo S, it is a 991.2 GT3RS with a GT engine evolved from the 991.2 Turbo S, and an unique PDK transmission as well.
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#8
Didn't realize that the oil has to be changed after every event. GT3/RS only requires change after 6,200 track miles (12 Indy 500's) which seems a bit much...
I guess that must be a result of oil hot spots (as oil passes through turbochargers, perhaps?)
Still not aware of any internal differences to Turbo.
I guess that must be a result of oil hot spots (as oil passes through turbochargers, perhaps?)
Still not aware of any internal differences to Turbo.
#9
Nordschleife Master
These are the features listed in the Technical presentation for the GT2RS compared to the 991.2 Turbo S:
- Modified crankcase
- Bespoke pistons
- Bigger turbochargers
- Multitube airfilter
- Enlarged air ducts
- High-performance cooling system
- Titanium sport exhaust system
- 67mm compressor and 55mm turbine (vs. Turbo S 58/48)
- The headers have a 25% enlarged cross-section
- Airbox with multitube maximizes surface area, increases airflow and the packaging is smaller
- Intercoolers have 27% more airflow thanks to new ducting and position
- Intercoolers are 15% larger
- Water vaporization system increases the intercooler efficiency by another 20%, and reduces air intake temperature by up to 70 degrees F
It is not a RWD 991.2 Turbo S, it is a 991.2 GT3RS with a GT engine evolved from the 991.2 Turbo S, and an unique PDK transmission as well.
- Modified crankcase
- Bespoke pistons
- Bigger turbochargers
- Multitube airfilter
- Enlarged air ducts
- High-performance cooling system
- Titanium sport exhaust system
- 67mm compressor and 55mm turbine (vs. Turbo S 58/48)
- The headers have a 25% enlarged cross-section
- Airbox with multitube maximizes surface area, increases airflow and the packaging is smaller
- Intercoolers have 27% more airflow thanks to new ducting and position
- Intercoolers are 15% larger
- Water vaporization system increases the intercooler efficiency by another 20%, and reduces air intake temperature by up to 70 degrees F
It is not a RWD 991.2 Turbo S, it is a 991.2 GT3RS with a GT engine evolved from the 991.2 Turbo S, and an unique PDK transmission as well.
Compare that to the differences between a standard 991 NA motor and the RS Motorsport mill. Lots of internal differences.
#10
Good old Mezger RIP.
#11
Addict
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It says modified crankcase which is sort of like engine block, but different construction on a 911. It’s not clear exactly what they did there, but could be something very minor (to mount to the larger headers for instance) or something more significant to strengthen or improve oiling for another example...
#13
Addict
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#14
Nordschleife Master
Actually, crank refers to crankshaft which apparently the 2RS shares with the Turbo.
It says modified crankcase which is sort of like engine block, but different construction on a 911. It’s not clear exactly what they did there, but could be something very minor (to mount to the larger headers for instance) or something more significant to strengthen or improve oiling for another example...
It says modified crankcase which is sort of like engine block, but different construction on a 911. It’s not clear exactly what they did there, but could be something very minor (to mount to the larger headers for instance) or something more significant to strengthen or improve oiling for another example...
#15
Most would consider that a minimum and the reality is it should be changed as required (if used solely for Motorsport)
also the 2RS change quantity is 7.94l whereas the GT3 is 6.4l