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07-29-2009, 06:36 PM
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#1
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Registered
Join Date: Jun 2009
Location: Chicagoland
Posts: 644
2000 33 Outlaw
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600sc and air intake
I was looking around the engine bay of my new Tantrum and noticed there are really only 3 openings for what I call "make up air" (vents)
I was thinking a big block with a blower and two carbs would need a bit more air than that, no?
Would I be wasting my time putting in a couple more vents.. or am I just missing something.
dumb question number 2:
is it still power steering fluid in the pump?
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07-29-2009, 07:50 PM
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#2
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Active
 Platinum Member
Join Date: Oct 2000
Location: Pompano Beach, Florida
Posts: 2,560
Cult Founder, 1993
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ATF or Dexron for the PS. Don't you have 2 vents on each side?
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07-29-2009, 08:15 PM
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#3
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Registered
Join Date: Jun 2009
Location: Chicagoland
Posts: 644
2000 33 Outlaw
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Thanx Pat, that makes sense, I thought it was a bit too red for PS fluid.
Theres one vent per side, two holes, one hole is used for the blower.
I was thinking more vents to the battery compartment and then to the outside.
Theres only room for one vent per side
Last edited by ICDEDPPL; 07-29-2009 at 08:17 PM.
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07-30-2009, 01:31 AM
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#4
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Charter Member # 55
 Charter Member
Join Date: Oct 2000
Location: Omaha
Posts: 11,046
32 Active Thunder
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Its been fine for 11 years. I wouldn't worry about it. The carbs are 800cfm(cubic feet/minute) each. Unless you are going to do a hatch scoop, I doubt you'll notice any difference.
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07-30-2009, 07:15 AM
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#5
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Platinum Member
Platinum Member
Join Date: Mar 2002
Location: Indiana
Posts: 1,902
2004 37 ActiveThunder
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If I'm thinking right, the first 28 with a 525 was running a little short on clean air so there may be something to this. Take her out for a few wide open runs, one with the hatch down and the next with the hatch cracked just enough to let some air in. It can't hurt anything, it won't cost anything and it will answer your question.
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07-30-2009, 08:12 AM
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#6
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Charter Member
Charter Member
Join Date: Nov 2000
Location: Lake Charles, LA USA
Posts: 1,072
1998 32' Active Thunder
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I seem to remember the spec is 2-3" of water vacuum in the engine compartment max. How you would measure it I don't know. My old procharged Baja ran faster with the engine hatch cracked!!! Hit the throttle, trim button, tabs and engine hatch switch all at the same time.
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07-30-2009, 10:03 AM
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#7
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JC Performance Engines
 Gold Member
Join Date: Jul 2002
Location: Long Island, NY
Posts: 8,115
1995 Pantera 24SE - SOLD
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If you run w/ the hatch cracked open, put a line over the front of it so there's no chance of it blowing open. 
If you have a cushion on your hatch, w/o going to a scoop, i don't know how you'd get more air in there.
pantera has been putting NACA ducts on the outer sides of the hatch, and making the pad narrower.
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07-30-2009, 02:48 PM
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#8
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Active
Platinum Member
Join Date: Oct 2000
Location: Pompano Beach, Florida
Posts: 2,560
Cult Founder, 1993
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Quote:
Originally Posted by Stormrider
If you run w/ the hatch cracked open, put a line over the front of it so there's no chance of it blowing open.
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Good tip. Remind me to tell you a story one day..... 
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I'm not here for a long time. I'm here for a good time.
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07-30-2009, 03:26 PM
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#9
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Platinum Member
Platinum Member
Join Date: Mar 2002
Location: Indiana
Posts: 1,902
2004 37 ActiveThunder
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Quote:
Originally Posted by ActiveThunder
Good tip. Remind me to tell you a story one day..... |
I got to see a hatch blow over on a 28 Prototype during the Cumberland run a few years ago. I can tell you they can go from engine hatch to swim platform real fast too.
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07-30-2009, 05:06 PM
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#10
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Gold Member
Gold Member
Join Date: Jan 2007
Location: Mansfield, TX
Posts: 5,368
1990 28 Apache FOR SALE, 03 Sea Ray 240 sundeck
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Quote:
Originally Posted by boatfreak
If I'm thinking right, the first 28 with a 525 was running a little short on clean air so there may be something to this. Take her out for a few wide open runs, one with the hatch down and the next with the hatch cracked just enough to let some air in. It can't hurt anything, it won't cost anything and it will answer your question.
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Dayum, I can fit two 850's without scoops, and the vents are just fine 
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