718 Spyder will naturally aspirated, apparently...

718 Spyder will naturally aspirated, apparently...

Author
Discussion

Twinfan

Original Poster:

10,125 posts

105 months

Wednesday 12th July 2017
quotequote all
According to this thread on Rennlist:

https://rennlist.com/forums/987-981-718-forum/9992...

I would say that confirms that the GT4 will be too, and I think that rules out a Motorsport engine as I can't see them fitting one in the Spyder nor can I see the Spyder and GT4 having different engines.

The existing 3.8L with an X51 Powerkit must be the way they'll go? Could be the last NA Caysters too...

Twinfan

Original Poster:

10,125 posts

105 months

Thursday 13th July 2017
quotequote all
It's the Spyder part that was news to me. I know the next GT4 has been mentioned as NA previously and so we can now assume both cars will share the same engine and it won't be a de-tuned 4.0ltr from the Motorsport division.

Must be the Powerkitted 3.8 now, I can't see how it can be anything else.

GT4P

5,220 posts

186 months

Thursday 13th July 2017
quotequote all
Porsche always shared existing engines the 3.8 dfi has not been made for 2 years do you think they have 5-6000 engines lying around to cover next production , all cars are built with parts built to production run so are Porsche going to build 5-6000 engines just for the Gt4? Costly exercise! It was easy for them with the 981gt4/spyder as they just used the 991.1s engine with a throttle restriction and an ecu detune! Hence price was kept down.
So what current engine in production are they going to share? Will it be the 3.0 in all 991.2 without the turbo,the flat 4 turbo or the current revised gt3 lump!
The first option won't make enough reliable power the second obvious choice the third expensive rrp!
After thought there is a fourth option they could use the 3.8 from the turbo without the turbo but has that not also got uprated internals which would also make it Gt3 engine expensive!

Twinfan

Original Poster:

10,125 posts

105 months

Thursday 13th July 2017
quotequote all
My theory is that the 'old' 3.8 is still knocking around because it exists in the Clubsport GT4. Porsche can increase or fire up production of it to build a run of engines for an updated Clubsport, the next GT4 and the next Spyder. I would say that should cover 10,000 engines? Chuck in the PDK option as seen in the Clubsport and we'd have the next GT4 ready to go almost immediately with some economies of scale thrown in.

NA engine? Check.
Power levels around 425bhp to fit in the Porsche hierarchy correctly? Check.
Use the 981 GT4 platform with a few subtle/minor tweaks? Check.
Pricing just below base 911? (probably £70k-£75k)? Check.

That just leaves the gearbox. I don't think the existing manual 6 speed will take the increased torque without modification, so do they throw the 7-speed in there? Or they could use the gearbox from the 911R/GT3 which they already have on the shelf.....

Fokker

3,460 posts

223 months

Tuesday 18th July 2017
quotequote all
anonymous said:
[redacted]
Yep that's it exactly and with 424bhp as long as they can get it to breath as well as the 911 version.