Pelican Parts Forums - 2.7lt with E Cams Timing Lift at Overlap

Pelican Parts Forums (http://forums.pelicanparts.com/)

- 911 Engine Rebuilding Forum (http://forums.pelicanparts.com/911-engine-rebuilding-forum/)

- - 2.7lt with E Cams Timing Lift at Overlap (http://forums.pelicanparts.com/911-engine-rebuilding-forum/1175231-2-7lt-e-cams-timing-lift-overlap.html)

2.7lt with E Cams Timing Lift at Overlap

Hi. I am rebuilding a 1976 2.7 Engine with European RS Barrels and Pistons, with EFI, and am looking fpr advice with the Cam Lift at Overlap for this engine.
The E cams P/N 901 105 181 00 L/H and 901 105 110 00 R/H, Lift at Overlap isquoted at 3.0 > 3.3mm for a 70 engine and 2.7 >3.1 on a 72on engine. while these engine are not the 2.7 Lt I an wondering which would be the best for the bigger engine. I am thinking the earlier advance setting may be the better one.
Any thoughts would be appreciated.
Thanks MichaelS911

Quote:

Originally Posted by MichaelS911 (Post 12429433)

The 72 E is lower compression, 8.0 off the top of mind. The 70 E is in the mid 9s cr,
You can’t go for top end on your highways, so I would go to about 3.3 and call it a day, better off line response
Bruce