991.2 GT3 - Colours. Spec. Q+A. etc etc..

991.2 GT3 - Colours. Spec. Q+A. etc etc..

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Discussion

Porsche911R

21,146 posts

264 months

Sunday 22nd April 2018
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Taffy66 said:
Just measured mine at the exact middle point in the splitter and it is exactly 127mm..I said nearly a year ago that by raising the front will cause the rear to lower...
Big swing from 110 to 127mm.

I wonder what oem should be.

Phooey

Original Poster:

12,574 posts

168 months

Sunday 22nd April 2018
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mine (no lift) doesn't catch at all over BIG speed humps into gym car park whereas GT4 used to catch on 1 of the humps! GT3 certainly looks lower than the GT4 but for some reason escapes unscathed scratchchin

Porsche911R

21,146 posts

264 months

Sunday 22nd April 2018
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I have no idea how you guys get on, my R is 170mm high I have no paint left on the Splitter.

My GT4 was a ***** again scrapes every where to a point I could not take it into car parks or most places !.
I use to shave the furry bits off with a razor :-)

the GT3 is lower and has these solid ducts, these are not the brake flowing ones, but 2 massive extra ducts which sit only 60mm high and are very wide !!!!

my rear fins are 75mm high at best off the floor.

So people saying they can go over ramps is mystifying unless I live where the ramps are MUCH bigger !!!! (but when I say much I mean you cannot get over a 65MM ramp !!!

No way can I drop the car down to 45mm clearance on those 2 big ducts !!!

I would get no where without Lift in this car but I have already scraped the rear fins.





Edited by Porsche911R on Sunday 22 April 18:28

IREvans

1,126 posts

121 months

Monday 23rd April 2018
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Porsche911R said:
Big swing from 110 to 127mm.

I wonder what oem should be.
Taffy, are you sure its 127mm at normal ride height on level ground...? That seems high....(unless you've pumped your tyres up to 4Bar.... wink

Centre of splitter to ground on mine is 112mm at standard ride height, 147mm with lift activated. (Mine's a CS car with PCCB, 3/4 tank of fuel, nobody in it, cold Mich P tyres at 1.9F, 2/2R)

Taffy66

5,964 posts

101 months

Monday 23rd April 2018
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IREvans said:
Taffy, are you sure its 127mm at normal ride height on level ground...? That seems high....(unless you've pumped your tyres up to 4Bar.... wink

Centre of splitter to ground on mine is 112mm at standard ride height, 147mm with lift activated. (Mine's a CS car with PCCB, 3/4 tank of fuel, nobody in it, cold Mich P tyres at 1.9F, 2/2R)
I've just re-measured mine on my new 100% level power floated garage floor and it is 124mm in exact centre of front splitter..Measurement in the same spot with Front lift engaged is 158mm.
I'm going to get mine checked and have a thorough geo sometime in the next couple of weeks..I'd be interested what Apolo's GT3 is since he's had it lowered for track work..
Maybe my OPC wrongly assumed that my long drive is full of potholes when in actual fact its billiard smooth asphalt..!
Mine is the exact same spec as yours although mine's on Dunlops whereas yours is on Michelins..Mine however spent the period of the Beast from the east safely inside my new garage when yours was slowly being compressed by 10ft of snow which might account for yours being lower than mine..biggrin;)

Porsche911R

21,146 posts

264 months

Monday 23rd April 2018
quotequote all
Taffy66 said:
I've just re-measured mine on my new 100% level power floated garage floor and it is 124mm in exact centre of front splitter..Measurement in the same spot with Front lift engaged is 158mm.
I'm going to get mine checked and have a thorough geo sometime in the next couple of weeks..I'd be interested what Apolo's GT3 is since he's had it lowered for track work..
Maybe my OPC wrongly assumed that my long drive is full of potholes when in actual fact its billiard smooth asphalt..!
Mine is the exact same spec as yours although mine's on Dunlops whereas yours is on Michelins..Mine however spent the period of the Beast from the east safely inside my new garage when yours was slowly being compressed by 10ft of snow which might account for yours being lower than mine..biggrin;)
The PDK extra weight should drop it a bit ;-)

but it seems none of the cars are anywhere near spec, again be interested in Apolo's splitter height is now.

if some people are on 110mm already and asked for a 15mm drop that would be harsh on those ducts.

Cblair246

200 posts

121 months

Monday 23rd April 2018
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+/- 110 mm for me (MP4S tyres and PDK with clubsport)

IREvans

1,126 posts

121 months

Monday 23rd April 2018
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Taffy66 said:
I've just re-measured mine on my new 100% level power floated garage floor and it is 124mm in exact centre of front splitter..Measurement in the same spot with Front lift engaged is 158mm.
I'm going to get mine checked and have a thorough geo sometime in the next couple of weeks..I'd be interested what Apolo's GT3 is since he's had it lowered for track work..
Maybe my OPC wrongly assumed that my long drive is full of potholes when in actual fact its billiard smooth asphalt..!
Mine is the exact same spec as yours although mine's on Dunlops whereas yours is on Michelins..Mine however spent the period of the Beast from the east safely inside my new garage when yours was slowly being compressed by 10ft of snow which might account for yours being lower than mine..biggrin;)
I cant imagine anyone has altered the ride height on your car during the PDI, it would throw all the corner weights out, but for it to be 12mm higher than mine (and others) is puzzling. It would suggest the spring platforms on your car are around 10 turns higher, can't see that myself.....and I also doubt the Dunlops give you an extra 12 mm of ride height.

The delta between chassis lift on and off on your car is 35mm, which seems correct.

I wouldn't be dropping the ride height below std by the way, mine already scrapes the front brake ducts on a few heavy compressions around here. When you drop the ride height that much, you just lose too much compliance


Dai.L

37 posts

76 months

Monday 23rd April 2018
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112mm PDK Clubsport on MP4S tyres

IREvans

1,126 posts

121 months

Monday 23rd April 2018
quotequote all
Taffy66 said:
I've just re-measured mine on my new 100% level power floated garage floor and it is 124mm in exact centre of front splitter..Measurement in the same spot with Front lift engaged is 158mm.
I'm going to get mine checked and have a thorough geo sometime in the next couple of weeks..I'd be interested what Apolo's GT3 is since he's had it lowered for track work..
Maybe my OPC wrongly assumed that my long drive is full of potholes when in actual fact its billiard smooth asphalt..!
Mine is the exact same spec as yours although mine's on Dunlops whereas yours is on Michelins..Mine however spent the period of the Beast from the east safely inside my new garage when yours was slowly being compressed by 10ft of snow which might account for yours being lower than mine..biggrin;)
Here's a suggestion for you Taffy, go and measure how many threads are visible on the bottom of your damper body - it's visible through the wheel above the brake disc. I've got 4 full threads visible. Assuming a thread pitch of 1.25mm, if I wound the platforms down as far as they'd go, I'd only get a reduction in ride height of around 5mm (the relationship of damper to ride height isn't quite 1:1). I'm not convinced that anyone has been able to drop the ride height by 15mm (from a splitter height from ground of 112mm)

If your splitter height is 127mm, then I'd expect you to have around 16 full threads showing on your front damper body.....

Tony 1234

3,465 posts

226 months

Monday 23rd April 2018
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105mm clearance on centre of splitter with my CS car

Cheib

23,112 posts

174 months

Monday 23rd April 2018
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Found out today mine is at Sheerness...been a long wait but blimey it hasn’t dulled the excitement!

breadvan

1,985 posts

167 months

Monday 23rd April 2018
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Interesting to see the lip height is exactly the same as my M3. It’s all in the overhang....


Taffy66

5,964 posts

101 months

Monday 23rd April 2018
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IREvans said:
Here's a suggestion for you Taffy, go and measure how many threads are visible on the bottom of your damper body - it's visible through the wheel above the brake disc. I've got 4 full threads visible. Assuming a thread pitch of 1.25mm, if I wound the platforms down as far as they'd go, I'd only get a reduction in ride height of around 5mm (the relationship of damper to ride height isn't quite 1:1). I'm not convinced that anyone has been able to drop the ride height by 15mm (from a splitter height from ground of 112mm)

If your splitter height is 127mm, then I'd expect you to have around 16 full threads showing on your front damper body.....
Its actually 124mm as i mentioned..I'm now starting to develop some self doubt in my measuring method..Am i doing it like everyone else i wonder..?
To clarify, my measurement is taken in exactly the middle of the front splitter aligned with a vertical mark just above on the lower bumper..I hold my finger against the bottom of the black consumable edge and measure level with the bottom of this edge..
It makes sense as mine hasn't come close to grounding even without engaging lift where my old GT4 would scrape..
First thing tomorrow i'll count the threads as you suggested to set my mind at ease..
Wearing my normally infallible conspiracy hat i'm starting to wonder whether when PDI'ing my GT3 they simply forgot to lower my GT3 from the higher transport height..

Edited by Taffy66 on Tuesday 24th April 00:15

Porsche911R

21,146 posts

264 months

Monday 23rd April 2018
quotequote all
Tony 1234 said:
105mm clearance on centre of splitter with my CS car
that's a low one.

I have hit the brakes 3 times after using lift and managed to get down to 115mm from my 120 where I just let lift off.

Porsche911R

21,146 posts

264 months

Monday 23rd April 2018
quotequote all
breadvan said:
Interesting to see the lip height is exactly the same as my M3. It’s all in the overhang....

nope it's all in those big **** off ducts which give you zero ground clearance.

breadvan

1,985 posts

167 months

Monday 23rd April 2018
quotequote all
Yup, them too.

Had a few scrapes, even with lift, I’ll have a look next time I’m under and see what’s damaged.

PS. I’ve shown you mine........... whistle

Edited by breadvan on Monday 23 April 23:04

Taffy66

5,964 posts

101 months

Tuesday 24th April 2018
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Tomorrow when i count the threads, i'll measure the gap between the tops of both front and rear tyres and the wheel arches, to get a clearer picture of what's going on..
The plot thickens..irked

APOLO1

5,256 posts

193 months

Tuesday 24th April 2018
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I always felt the ride height was bit to high at stock. Even with lowering 15mm at the front at 11mm at the back. Not a problem with bottoming on road use. But do use the lift a lot. Will measure and revert. A few of my friends also run this set up. They have not mentioned any problem's.

lowndes

807 posts

213 months

Tuesday 24th April 2018
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105mm clearance from ground to underside of centre of splitter. CS, full tank no one in the car.