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S1 Cam Upgrade

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Tangles Grand Master

Tangles

Posted
Posted
Brendan have you had the tune? What's the latest on the AWKW front? Please tell me its over 230 as i am hoping to acheive that without the port and polish and poncams!

239rwkw @ 16psi

full boost at 4000rpm

real real nice tune

would push 240awkw @ 17psi surely....

as it is the stock injectors are now at their max.

sometime down the track I'll get S15 480cc injectors and refresh the remap ecu

(sold the sard intake setup I had)

enginebay09.jpg

scan0001-2.jpg

  • 3 months later...
  • 5 years later...
FAkbari Apprentice

FAkbari

Posted
Posted

Hi guys,

I recently posted a topic about this as I have a series 2 Stagea with the Neo motor and have always found my car is anywhere between 15-30Kw lower than mates who have GTS-Ts. I'm running the usual bolt-ons with a larger turbo, injectors and pump and making 355Kw on e85. My other mates are around the 370-400Kw mark with same setup.

Its really interesting to come across this topic as I couldn't figure out why, however recently researching online found that GTS-Ts with the non-Neo RBs camshaft duration was 240°intake / 240°exhaust and lift 7.8mm intake / 7.8mm exhaust.

The Neo equivalent camshaft duration is 236°intake / 232°exhaust and lift: 8.4mm intake / 8.7mm exhaust.

Apparently Nissan fitted the NEO head later on, which enabled the engine to be classified as a low emission vehicle (LEV) engine due to their lower fuel consumption and emission output. This may partly explain why Stageas generally make less power as opposed to the R33s etc. Not sure what it means for the R34 which has the same engine as the series 2 stagea - it may very well have also received more aggressive CAMS due to being a sports car.

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

I doubt very much that the Stagea has different cams from the Skyline. I have attached a Tomei chart which shows that the R33 DE and DET have the same cam while the R34 Neo DET engine has a higher lift on the exhaust than the DE. The last of the S1 Stagea came out with the Neo engine (hence the later CAS). Of course the R33 and Neo cams are not interchangeable (solid lifters on the latter). Sorry can't attach the chart - hopefully link follows:

http://www.tomeiusa.com/_2003web-catalogue/e090_camshaft-specs.html

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