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Just spotted this on a thread on Rennlist
here
, Hartech's US partner Slakker Racing Developments posted this regarding different engine modifications and their effectiveness. Very interesting for anyone looking at tuning one of the M96 engines. Short version, the only real way to make dyno proven power gains is traditional NA techniques of porting/polishing, cams or increasing displacement. At least for a 4.1l engine. though I'd be surprised if that doesn't hold for a 3.4 or a 3.6 too.
Thread 'Hartech rebuild and upgrade to 4.1 UPDATE - 5000 miles in.'
6 Dec 2022
I thought it might be helpful to start a new thread outlining what happens over the next couple of months following our 997.1 C4S as it has a rebuild and refresh at Hartech. Useful perhaps for any of you considering / needing a rebuild on yours.
The car was dropped off in Bolton today. My wife and I have Covid so we thought we would have to cancel but, luckily, a friend stepped in at the last moment and did the 320 mile round trip with the 997 on his trailer. Top bloke!
Next stage is a breakdown of what the car needs / might need soon /is a good idea to do "while we are in there" (eg...
drmark
Replies: 242
Forum:
Porsche 911 997 (2004-2012)
This is a source reference. Confirm exact model applicability in the original material.
