718 GT4?
#5146
Rennlist Member
Learned that the side intakes are a different shape and much improved over previous gen. Screens are OEM now - another big plus.
#5147
18s on a GT4 with 050 soft would be excellent
Last edited by groundhog; 01-05-2019 at 10:26 PM.
#5148
There are a lot of assumptions around the 4l, its the head design and internals (cams, rods, crank, pistons) that count - the short block is inconsequential other than in terms of liners, oil flow and cylinder wall thickness (if there is a material difference). From a performance perspective I quite like what Porsche have done with the 9A1, simple, effective and reliable particularly if mated with PDK. Hits a lot of buttons for a track car. Then again there are an awful lot of used 991 GT3s on the market (at least where I live).
I could see Porsche using the 4l block and more mainstream internals to deliver between 425 (with more under the curve up top) and 450HP - I certainly wouldn't be surprised if peak HP remained at 425 - the small increase in torque across the rev range would be beneficial, nice but not other worldly if the top end is artificially capped where the really good gains could be achieved. (However that is dependant on the compression ratio too e.g 12.5? 12.9? and an unlikely 13.3).
They may do something more special for a RS version but other than that watch out for marketing around the 4L moniker if indeed it does eventuate e.g. look at the gear ratios and torque curve, ignore the marketing
I could see Porsche using the 4l block and more mainstream internals to deliver between 425 (with more under the curve up top) and 450HP - I certainly wouldn't be surprised if peak HP remained at 425 - the small increase in torque across the rev range would be beneficial, nice but not other worldly if the top end is artificially capped where the really good gains could be achieved. (However that is dependant on the compression ratio too e.g 12.5? 12.9? and an unlikely 13.3).
They may do something more special for a RS version but other than that watch out for marketing around the 4L moniker if indeed it does eventuate e.g. look at the gear ratios and torque curve, ignore the marketing
Last edited by groundhog; 01-06-2019 at 05:19 AM.
#5149
Rennlist Member
Actually they are not that special, and are standard Cup car parts. Race car parts can be had via PMNA, if ones knows the part numbers to order them.
But truth is, they are race parts, for street use they won't be satisfactory.
Come to think of it, those are from the Cup car, so the mounting are for Cup car suspension, not normal GT4 suspension.
#5150
Actually they are not that special, and are standard Cup car parts. Race car parts can be had via PMNA, if ones knows the part numbers to order them.
But truth is, they are race parts, for street use they won't be satisfactory.
Come to think of it, those are from the Cup car, so the mounting are for Cup car suspension, not normal GT4 suspension.
But truth is, they are race parts, for street use they won't be satisfactory.
Come to think of it, those are from the Cup car, so the mounting are for Cup car suspension, not normal GT4 suspension.
I can see where gazza is coming from - I suspect he needs a car that can be road registered at the point of purchase and gets frustrated at the lack of options of wheels and tires (due to clearance issues with Brembos). I have found this a big issue in road rallying (for example) particularly given supp regs specify the actual number of tires - in fact your supply is marked up during scruit. In most cases this means you are reliant on Cup 2s or Trof Rs which are much slower than 050 (soft).
Do you know if the gear ratios and final reduction ratio have remained the same or have changed?
Last edited by groundhog; 01-06-2019 at 01:37 AM.
#5151
Rennlist Member
Agree that there are few situations where you can fully enjoy the limits of the car legally on the road. One can hold the speed limit through corners on very twisty roads, or do quick bursts of acceleration and back off around the limit. It would be nice though for the gearing to be such that 2nd gear tops out around say 112 km/h instead of 135 km/h as it does currently on the GT4. This would provide 20% stronger acceleration at road legal speeds.
#5152
#5153
EVO wasnt too far from the truth back in February of last year.
Kudos.
https://www.evomagazine.com.au/new-p...lat-six-power/
Kudos.
https://www.evomagazine.com.au/new-p...lat-six-power/
#5154
Rennlist Member
MR would be closer to DINAN for BMW or BRABUS for Mercedes. It is over and above the Motorsport treatment from the factory.
What makes Manthey Racing slightly different is it is owned by Porsche which adds an additional layer of complexity when trying to compare. However, MR is definitely more than AMG or M.
#5155
#5156
Three Wheelin'
Is there a reason rotors aren't cross-drilled as in road models? I suspect cross-drilling helps with channeling away the water in wet conditions. Probably there are heat dissipation benefits too. Wouldn't race model gain from such benefits?
#5159
In the world of Porsche, GT is the ‘equivalent’ of the AMG or M moniker.
MR would be closer to DINAN for BMW or BRABUS for Mercedes. It is over and above the Motorsport treatment from the factory.
What makes Manthey Racing slightly different is it is owned by Porsche which adds an additional layer of complexity when trying to compare. However, MR is definitely more than AMG or M.
#5160
I also hope the street version comes close to the CS. Higly doubt it tho.
If I would still live in the US i would buy the track pack version. Over here in Northern Europe we are not so lucky with non street legal cars on track days.
The CS would be a great car to have as a track toy with its relatively cheap service intervals and beefed up track ready goodies.
If I would still live in the US i would buy the track pack version. Over here in Northern Europe we are not so lucky with non street legal cars on track days.
The CS would be a great car to have as a track toy with its relatively cheap service intervals and beefed up track ready goodies.