KresoF1:
bluelines:
So the current GT3/RS engine has been phased out? 
This is what I heard from my P source as well. 991.2 GT3 will use new engine.
This is not correct.
991 GT3 MA175 started with non designated engine and moved to E (replacement stop sale), F (MY2015) and G (MY2016).
So what AP means is 991 GT3 engine was really Version 1.0-1.4. The G engine in 991 GT3 has the updated oil pump, filter, sump, squirters etc from the MA176 MY2016 991 GT3RS. Infact the engine is now almost identical (improved finger rockers and spirngs) although it does not have the crankshaft of teh RS or the enlarged capacity. We call the 991 RS MA176 engine Version 1.5 then.
The Motorsports 9A1 (MA17X) is in basis teh MA175/6 unit but with all the series updates and then further updates in Nov 2016 to ensure its robustness for racing. There was even minor fettling of ECU maps and exhaust happening over Xmas.
The 911R engine is the MA176 based engine with different intake runners and mapping as the packaging is different. It may have further running revisions to oiling taken from Motorsports lessons late last year. I think to say its version 2.0 is a little inacurate, more like version 1.8.
They are not "throwing the engine out". PMS are very happy with the debut of the MA176X and expect it to see service for a few years until rule changes call otherwise (Turbo).
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2014 991 GT3, 1994 993C2 6spd, 2016 Cayman GT4 (on order)
Yawn
for the price delta.
but we have basically seen it here already and the spec is also posted before. 
