Procharged 555 dyno results...
04-20-2016 | 11:08 AM
#31
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From: SF Bay Area
Does a centrifugal charger add much noise? I'm guessing that there would be quite an induction howl. The reason I ask is that I'm going to have to notch my tall valve cover and wondering if it's worthwhile to try to accommodate fitting an air boot on there for a filter while I'm fabricating things to keep the engine bay noise minimal.
04-20-2016 | 11:21 AM
#32
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From: Lago Vista TX
Didn't seem all that loud on the Dyno, just a slight whine.. Never ran one in a boat though.. What valve covers do you have ? I have the angled ones from CP and they clear just fine...
04-20-2016 | 11:33 AM
#33
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From: SF Bay Area
I just ordered these and haven't actually tried to fit them yet. It may squeak by and in that case I'll live with it first and see, but if I'm cutting and welding I may try to squeeze a boot on there.
04-20-2016 | 12:59 PM
#34
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From: frankenmuth michigan
Does a centrifugal charger add much noise? I'm guessing that there would be quite an induction howl. The reason I ask is that I'm going to have to notch my tall valve cover and wondering if it's worthwhile to try to accommodate fitting an air boot on there for a filter while I'm fabricating things to keep the engine bay noise minimal.
https://www.youtube.com/watch?v=dDxkI7KZNzs
Last edited by articfriends; 04-20-2016 at 01:02 PM.
04-20-2016 | 02:07 PM
#35
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From: Pa
Does a centrifugal charger add much noise? I'm guessing that there would be quite an induction howl. The reason I ask is that I'm going to have to notch my tall valve cover and wondering if it's worthwhile to try to accommodate fitting an air boot on there for a filter while I'm fabricating things to keep the engine bay noise minimal.
Last edited by GPM; 04-20-2016 at 03:56 PM.
04-20-2016 | 08:12 PM
#36
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From: Kirkland, WA
My vortech was obnoxious at idle, to the point I switched to a whipple. The vortech anything above idle is silent for the most part. The whipple by contrast is the opposite, silent at idle and whines under power. Which I'm ok with.
04-30-2016 | 12:52 PM
#37
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From: SF Bay Area
Not real loud, this was my M-3sc on Crocketts dyno a while back at the 1000+ hp level : https://www.youtube.com/watch?v=wB5ZN0rYTo0
https://www.youtube.com/watch?v=dDxkI7KZNzs
https://www.youtube.com/watch?v=dDxkI7KZNzs
How hot does the housing get? I need to run the hose from the thermostat to the headers in that little space between the charger and valve cover.
04-30-2016 | 07:53 PM
#38
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From: chicago
Which combo do like better as far as useable power in the boat?
03-25-2017 | 03:26 PM
#40
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From: St. Pete Beach, FL
The rising pressure in this application does not effectively raise the lbs/hr flow of the injector because it is opening into a pressurized environment. The rising rate reg is necessary to maintain the same flow in lbs/hr under boost as it would at base pressure. Also, the M4 takes a bunch more power to turn then an M3, and with that AFR I'm thinking .55 to .6 bsfc
