Henry Catchpole in sharkwerks porsche GT4
Discussion
https://youtu.be/R4HZS6X35r4
forget you hear the power pack engine quote ;-/
nice little vid.
forget you hear the power pack engine quote ;-/
nice little vid.
Edited by Porsche911R on Saturday 3rd December 18:05
The 19" wheels bring it down to 74 ish in the 987.2
And most people have PDK in the 981 so is about 72mph.
Both of those work quite well on B roads. But could be Ferrari short and better.
I agree a manual standard 981 is a bit meh with the long gears.
the GT3 boys never moan and that car is much worse to drive regarding torque and gearing :-/.
The GT4 has peak torque 2k lower than a GT3 , I must say I don't feel it feels under powered.
But a remap and a release of the real bhp is so cheap it seems daft not to have it.
And most people have PDK in the 981 so is about 72mph.
Both of those work quite well on B roads. But could be Ferrari short and better.
I agree a manual standard 981 is a bit meh with the long gears.
the GT3 boys never moan and that car is much worse to drive regarding torque and gearing :-/.
The GT4 has peak torque 2k lower than a GT3 , I must say I don't feel it feels under powered.
But a remap and a release of the real bhp is so cheap it seems daft not to have it.
jcosh said:
I haven't looked at costs in detail but figures of several £K's have been mentioned to me. Is this what you refer to as cheap?
remap and filters is about £1.5k for 405BHPyou don't get much more for the big spend on parts, just a smoother torque curve and 20bhp.
but the whole hog is £5k with throttle bodies and Manifolds, so not the end of the world.
Ave person will just have a remap.
Edited by Porsche911R on Tuesday 6th December 09:42
IF you don't like the GT4 gearing don't buy a 996/997 GT3 lol
What I wonder though is how the GT3 boys cover up the 85mph 2nd gear issue so well on the forum, and say it's a non issue :-)
The GT4 and jurno's bring up the GT4 issue and the GT4 has more torque at a 2k rpm lower point.
So some thing is a miss ;-) as the GT4 makes a far better road car regarding the gearing/engine/torque than a GT3.
What I wonder though is how the GT3 boys cover up the 85mph 2nd gear issue so well on the forum, and say it's a non issue :-)
The GT4 and jurno's bring up the GT4 issue and the GT4 has more torque at a 2k rpm lower point.
So some thing is a miss ;-) as the GT4 makes a far better road car regarding the gearing/engine/torque than a GT3.
LaSource said:
I find the GT4 gearing noise a bit over-hyped. Its fine as it is and works ok.
Yes, if you have maxed out the GT4's performance curve (e.g. are already at a pace say 2:46 laps at Spa, 2:24 laps at Silly) and want even more performance then the final drive plus power mods will improve this even further.
Having recently driven a very short geared Xbow on track (well it also has a short rev range), it can be irritating to have to change gear every 5 seconds and I was rather missing the taller gearing of GT3/GT4 cars.
Track and road are night and day, esp when on the road anything above 85mph is not good and 100mph plus is a 6 point and a ban. I know I have been to court 3 times for speeding !!! although all 3 on motorbikes a lot of years ago.Yes, if you have maxed out the GT4's performance curve (e.g. are already at a pace say 2:46 laps at Spa, 2:24 laps at Silly) and want even more performance then the final drive plus power mods will improve this even further.
Having recently driven a very short geared Xbow on track (well it also has a short rev range), it can be irritating to have to change gear every 5 seconds and I was rather missing the taller gearing of GT3/GT4 cars.
where at Spa even in the Spyder I was at 140mph and backing off due to brain saying slow down, when my instructor is still saying flat here :-)
richyd said:
So much BS on this forum.....
If you're worried about the gearing, just buy smaller wheels and keep the profile ratio and width of tyre the same. This will give a smaller rolling radius, and will achieve exactly the same effect as reducing the final drive.
.
THat plays havoc with PSM, abs, auto blip etc etc and you are NOT insured . If you're worried about the gearing, just buy smaller wheels and keep the profile ratio and width of tyre the same. This will give a smaller rolling radius, and will achieve exactly the same effect as reducing the final drive.
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So while a nice idea to fit small wheels electronics these days don't gel and also it looks stupid and makes the car scrape even more than it does now which would be crazy.
isaldiri said:
Well for iron brake cars it's not a problem. the gt4 clubsport runs 18" wheels for example...
the CS car runs smaller brake disks also ;-) and has shorter ratio's and real shocks and Adjustable sus.Proves a point a normal GT4 is nothing like a CS car now ! they did try it fully weighted up and PASM but it was not competitive.
no shock to get the lap time down, carbon doors etc, passive shocks with adjustable roll bars are now added and a Motec style control unit.
Edited by Porsche911R on Wednesday 7th December 19:22
isaldiri said:
the clubsport has 380mm front and rear rotors - exactly the same sizes as the road car.
What relevance does the dual clutch gearbox and non pasm (probably due to racing regs banning anything active) suspension have as well wrt to brake/wheel sizes...?
the over all effect of the CS car with smaller wheels and PDK means IT already has a short set of ratios 2 fold.What relevance does the dual clutch gearbox and non pasm (probably due to racing regs banning anything active) suspension have as well wrt to brake/wheel sizes...?
They fitted passive shocks because the PASM system was just not working well enough.
I stand corrected on the disk size thanks ;-) (I am wrong some times doh) lol
"Racing-specific hydraulic 2-circuit brake system, internally
vented steel brake discs, D = 380 mm, one-piece 6-piston
monobloc fixed callipers"
on track the longer gearing is not really an issue due to where the torque is.
MY Cayman R wheels are a bolt over at 19" but never tried it and you end up with 265's rear.
The best mods any one can do first is a geo with rear toe links, and 2nd sort out the Porsche restricted engine map.
we have a lot of free BHP and torque waiting for us, well and that torque dip needed sorting.
if you looks at the sharkwerks car now it's looks plenty fast enough and sounds amazing.
In fact proper GT now imo
https://youtu.be/ULIuS_wO6o0
MY Cayman R wheels are a bolt over at 19" but never tried it and you end up with 265's rear.
The best mods any one can do first is a geo with rear toe links, and 2nd sort out the Porsche restricted engine map.
we have a lot of free BHP and torque waiting for us, well and that torque dip needed sorting.
if you looks at the sharkwerks car now it's looks plenty fast enough and sounds amazing.
In fact proper GT now imo
https://youtu.be/ULIuS_wO6o0
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