View Single Post
RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,527
Garage
Bob,
An engine with stock head studs and rod bolts has a safe redline of ~6200rpm or so. Unfortunately a stock engine is done by 5500rpm so you're just making noise after that point.
Your car? I have no idea. Unless you know what's in the engine it is impossible to say.
My engine has ARP head studs and rod bolts. I shift at 7000rpm and it begs for more. My power likely runs out before 6500prm but the momentum keeps the engine in boost through the gear changes.

I don't understand about the 1.0bar / 0.8bar deal. If you have a 1.0bar spring you should hit and sustain 1.0 bar from ~3000rpm or so to redline. If you are bleeding down to 0.8bar on a 1.0bar spring you have a leak.

How does your boost controller fit into this? If you have a 1.0bar spring then 1.0bar is the lowest setting you should have. The boost controller would hold off the signal until the preset (above 1.0bar) is hit and then dump the signal to the wastegate which then pops open. Is this how your controller works?
__________________
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 03-15-2007, 12:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #20 (permalink)