S/C boost-octane???
04-03-2005, 05:21 PM
#1
Race Director
Thread Starter
S/C boost-octane???
Okay
After attending Deveks supermodel install day & all the huge HP gains that everyone achieved I have a couple questions?
What are the safe boost limits for a given supermodel kit, on a stock internal S4 engine? Both intercooled and non intercooled on standard 91 octane gas? It seems about 5-6psi is the limit for non-intercooled & who knows for the autorotor IC kits?....9-10? I would guess 8psi for an IC kit is a safe figure for an engine that will still last a while.
Now what about an S4 running 100 octane race gas? How much of an improvement would this make? An extra 4-5psi or more? Maybe 15psi total? By my estimates a 15psi kit would add 250-300+ HP which should make a properly set up (exhaust wise, but stock internals 5.0L) close to 600rwhp? Isn't the record for a murf kit (unknown psi) still 556rwhp?
Of course more power is always better...now I'm just looking for ways to reach the 400+whp/400+wtor club..that should be plenty for a "street" 928....so far its only S/C or 6.5L...thats the only way to make it.
Thanks
After attending Deveks supermodel install day & all the huge HP gains that everyone achieved I have a couple questions?
What are the safe boost limits for a given supermodel kit, on a stock internal S4 engine? Both intercooled and non intercooled on standard 91 octane gas? It seems about 5-6psi is the limit for non-intercooled & who knows for the autorotor IC kits?....9-10? I would guess 8psi for an IC kit is a safe figure for an engine that will still last a while.
Now what about an S4 running 100 octane race gas? How much of an improvement would this make? An extra 4-5psi or more? Maybe 15psi total? By my estimates a 15psi kit would add 250-300+ HP which should make a properly set up (exhaust wise, but stock internals 5.0L) close to 600rwhp? Isn't the record for a murf kit (unknown psi) still 556rwhp?
Of course more power is always better...now I'm just looking for ways to reach the 400+whp/400+wtor club..that should be plenty for a "street" 928....so far its only S/C or 6.5L...thats the only way to make it.
Thanks
04-03-2005, 05:24 PM
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Of course more power is always better...now I'm just looking for ways to reach the 400+whp/400+wtor club..that should be plenty for a "street" 928....so far its only S/C or 6.5L...thats the only way to make it.
Thanks
Originally Posted by IcemanG17
Of course more power is always better...now I'm just looking for ways to reach the 400+whp/400+wtor club..that should be plenty for a "street" 928....so far its only S/C or 6.5L...thats the only way to make it.
Thanks