11-07-2013, 08:31 PM #1
At what point is the back pressure of the water box not needed
So at what point is the back pressure of the water box not heeded. When running a SC it seems to me their is a point you could delete the water box. What say you?
11-07-2013, 09:19 PM #2
you would need to do a dyno test to know
but using the log exhaust mani I would bet a straight pipe would not loose much if any low end
and at wot it should free up a few ponies
11-07-2013, 10:19 PM #3
There is a few people running straight pipe and is loud as F....K.
11-07-2013, 10:54 PM #4
DB not an issue for a drag ski no pleasure riding 18 lbs of boost 1/4 mile a pass want all I can get out of the top half before I start on pump was thinking a jacketed pipe from manifold to exhaust tip
11-08-2013, 09:17 AM #5
Someone should run zoomies right out the left side of the ski behind their legs.
11-08-2013, 01:22 PM #6
Last edited by skoepp; 11-08-2013 at 07:55 PM.
11-08-2013, 05:21 PM #7
Off the line is what I need only do 1/4 mile pulls by the 1/8 at top speed just wanting all I can get out of what I have
11-08-2013, 06:22 PM #8
- Join Date
- May 2011
- West Texas
Forced induction engines don't need backpressure.
If you run straight, run a crap ton of water through the last foot or so to knock down the noise so your ears don't bleed. lol
I built two shorty boxes and tried each with large amounts of water. The 3.5in exit sounds very good and I ran all but one 1/4 water line and a small pisser through it. Looooots of water...
11-08-2013, 06:25 PM #9
it is not forced until over 6000rpm on most sc skis
11-08-2013, 06:52 PM #10
downside is that it seems to attract alot of unwanted male attention at the boat ramp and or cafe's
any waterbox seemed to affect the spooling of the turbo..
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