View Single Post
RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
RarlyL8's Avatar
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,184
I have a similar setup on my engine, SC cams and the K27-7200 turbo. Timing is set at 1.6 with good driveability. I really like the characteristics of these cams as compared to the other choices.
The power drop off in the upper range is more a function of the turbo than it is tuning. You can tune out performance but you cannot tune in more than the turbo was designed to handle.
Adding boost at the top end is a dangerous bandaid. I assume you have the stock K27-7200 turbo which is not designed to carry boost to redline. The replacement turbo for 965 top end performance application is the K27HFS. It is capable of carrying 1.0bar past redline while having a slightly lower threshold than the stock 7200.
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 02-15-2009, 05:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)