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Martin996RSR
Nürburgring


Joined: 08 Dec 2016
Posts: 472



PostPosted: Tue Dec 17, 2019 6:27 am    Post subject: Reply with quote

Hi Marky,
I used to race in Formula Vee and developed my own car using a Sheane as a starting point but changed so much that it was quickly no longer a Sheane. I've also helped develop other race cars and my own road cars, both restoring to original and heavily modifying such as V8 converting my MGB and designing and building modern coilover suspension for my second MGB. Although I've tracked my 911, I've no intention of racing one. I find road cars to be a compromise on track due to their very high weight when compared to a single seater. I find it's more fun to just build something that's really good fun to use every day. I still have my Formula Vee and may yet return to the series, but for now I'm happy flying competition aerobatics. Flying is my first love, and at the level I compete at, it's actually cheaper than racing cars.
 
  
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crash7
Hockenheim


Joined: 28 May 2011
Posts: 703



PostPosted: Tue Dec 17, 2019 10:33 am    Post subject: Reply with quote

NedHan79 wrote:
Martin996RSR wrote:
We don't have a secondary air pump on UK market 996.1 cars.


That’s my confusion sorted Thumb


996.1 C16 cars do have a secondary air pump dependant of year of build.

The later cars, I believe from MY2000 onwards come with secondary air pumps and an additional pair of o2 sensors.

Early cars had no secondary air pump and only post cat O2 sensors.

My 2001 had the air pump, I removed it as part of my engine build, its function is emmision based, in removing you need to have the air pump coded out in the ECU, you can then also lose the pre-cat o2 sensors.

Small blanking plates are required to cover the ports where the pump connections used to live.

Weight wise, at a guess, circa 1.5Kg saving, the pump sits in the engine bay under your coolant expansion tank.
 
  
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Martin996RSR
Nürburgring


Joined: 08 Dec 2016
Posts: 472



PostPosted: Tue Dec 17, 2019 11:28 am    Post subject: Reply with quote

Actually the early cars had the lamda sensors pre-cat rather than post.
 
  
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NedHan79
Hockenheim


Joined: 08 Nov 2018
Posts: 713



PostPosted: Sat Jan 11, 2020 1:55 pm    Post subject: Reply with quote

Bit of a random one.

Is there any benefit to stripping the electric motors out of the sports seats to save weight? Just thinking outside the box as my seats are actually in good condition.

Can the base be switched to manual adjustment?
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