718 Cayman GT4 is here – at long last.!
- Thread starter Motorhead
- Start date
Yeah, there's plenty of reference points for standard cars. JCR and BGB have posted plots of their mods vs standard cars so you'll get the general idea of how mine performs versus a standard car.
I don't think there will be a huge difference, maybe just a slight shift upwards of the curve as the car breathes a little better. It's more the feel in the seat that will have changed most IMHO, it's all about maximising the experience and joy of driving [
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I don't think there will be a huge difference, maybe just a slight shift upwards of the curve as the car breathes a little better. It's more the feel in the seat that will have changed most IMHO, it's all about maximising the experience and joy of driving [
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Twinfan said:Yeah, there's plenty of reference points for standard cars. JCR and BGB have posted plots of their mods vs standard cars so you'll get the general idea of how mine performs versus a standard car.
I don't think there will be a huge difference, maybe just a slight shift upwards of the curve as the car breathes a little better. It's more the feel in the seat that will have changed most IMHO, it's all about maximising the experience and joy of driving [
Peterh61 said:Just about to order PS4S £868 for the set from Black circles. Nearly £600 less than main dealer
Thanks for the recommendation. Does the 718 drive well on them ?
Yep! I've been out in biblical rain and they're awesome. In the warm and dry they're not quite as grippy as Cup2s, but we won't see days like that for a few months now...
I have a 2nd set of OE GT4 (981) wheels. I had my new front PS4S tyres fitted (by my reputable, regular supplier) to my front 'spares' two weeks ago and the rears were due to land at the end of November. Today I was told Michelin now say they will be approx 10 weeks on back order [&o][AndrewCS said:
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Bilko1 said:I have a 2nd set of OE GT4 (981) wheels. I had my new front PS4S tyres fitted (by my reputable, regular supplier) to my front 'spares' two weeks ago and the rears were due to land at the end of November. Today I was told Michelin now say they will be approx 10 weeks on back order [&o][AndrewCS said:
That's a bit rubbish. They seem to be in stock at Oponeo and Tyreleader if that helps?
AndrewCS
Active member
Just spoke with my supplier ... end November now
Story being, how Michelin are / are not managing their productions runs and then the import process
Their current offer of £100 of vouchers with four tyres expires November 30th hence if no tyres by then a decision on whether to pay up prior to receipt / fitment
Story being, how Michelin are / are not managing their productions runs and then the import process
Their current offer of £100 of vouchers with four tyres expires November 30th hence if no tyres by then a decision on whether to pay up prior to receipt / fitment
Are you guys sourcing them from a local supplier gettng them cheaper than £280?
If not, Tyreleader have them in stock right now: https://www.tyreleader.co...5-30-zr20-101y-1012815
If not, Tyreleader have them in stock right now: https://www.tyreleader.co...5-30-zr20-101y-1012815
Courtesy of Rob on the seemingly interminable Spyder thread:
https://www.roadandtrack.com/car-culture/a34702957/deman-motorsport-porsche-cayman-gt4-45-liter/
From 380hp to 560hp for an increase in capacity of 0.7-litre is a very significant power hike. I wonder what are the other changes that DeMan declined to share: heads, intake, exhaust, flywheel, DME mapping? I wonder if the machining marks on the crankshaft webs are original or if material has been removed in the interest of lightness and reduced rotational inertia?
Note that he also offers revised 2nd - 5th gearbox ratios designed specifically to work with the 4.5-litre’s power delivery.
Jeff
https://www.roadandtrack.com/car-culture/a34702957/deman-motorsport-porsche-cayman-gt4-45-liter/
From 380hp to 560hp for an increase in capacity of 0.7-litre is a very significant power hike. I wonder what are the other changes that DeMan declined to share: heads, intake, exhaust, flywheel, DME mapping? I wonder if the machining marks on the crankshaft webs are original or if material has been removed in the interest of lightness and reduced rotational inertia?
Note that he also offers revised 2nd - 5th gearbox ratios designed specifically to work with the 4.5-litre’s power delivery.
Jeff
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