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Thread: horn intake on pro max
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12-23-2008, 08:14 PM #1Member
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horn intake on pro max
what would be the gain better or worse .
to change the front half w horn off a 260 on to a 225 pro max.
thanks
Doug
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12-24-2008, 12:20 AM #25000 RPM
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you would lose a little on bottom end and gain very little (if any) on top. if you want to experiment with your promax, i would remove the water seperating filter on the motor and put it in the boat. i would also remove the reservoir/pump and run a 260 style fuel/pump setup with return line. this should allow better air flow.
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12-24-2008, 06:20 AM #3
why would he loose bottom end
Is the PM intake quicker?thanks Dennis
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12-24-2008, 07:09 AM #45000 RPM
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Most people say the wet reed is a little snappier on the hit and through out the midrange. The Horn seems to produce a little more topend but not a whole lot. There was a couple of people making wet reed spacers for the horn motor. Came with plugs to put in the crankcase injector holes and moved the injectors to the front of the reeds..
Rick2006 Gambler 2200DC/2006 250XS
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12-24-2008, 01:17 PM #5
Thanks Guys
Doug
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12-24-2008, 01:49 PM #6
You should check into the Brucato slide front for your ProMax.
DB
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12-24-2008, 06:22 PM #7
rickster
Can you tell me some of the names of the companies makeing the wet reed spacers?
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12-24-2008, 06:32 PM #85000 RPM
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Here is a starting place..
GPI/Randy Pierson was selling them, machined by Chris Hildenbrand
Rick2006 Gambler 2200DC/2006 250XS
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12-24-2008, 08:00 PM #9
Thanks Rickster.
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12-24-2008, 08:47 PM #10Member
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12-24-2008, 09:11 PM #115000 RPM
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Most people say the wet reed is a little snappier on the hit and through out the midrange.
Rick[/QUOTE]
How can wet reeds be snappier if the gas charge is further from the cylinders?
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12-24-2008, 11:31 PM #125000 RPM
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All I can figure being a layman is that the fuel being injected before the reed tends to atomize better passing through the reed cages as well as mixture distribution might be a little better .Maybe it gets a better ram effect being the aircharge is denser with fuel suspended.. The reeds probably seal better being wet as well as last longer as a bonus..
I really do not have a scientific answer as to why it makes a difference but I have heard from several people that it does..
Dunno,
Rick2006 Gambler 2200DC/2006 250XS
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12-25-2008, 08:44 AM #13Screaming And Flying!
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How can wet reeds be snappier if the gas charge is further from the cylinders?
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12-25-2008, 09:04 AM #145000 RPM
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I just wish someone could tell me if the horn and the svs are dry reed motors. how come everytime i ran mine and change the reeds, the reed and cages were full of oil. Also if the wet reeds are quicker how come 99% of all the progas, profuel and u-boats don't run them. Seems like it would be just the other way around. after all these guys are pro's and would do what ever it takes to win. later Larry D
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12-25-2008, 09:25 AM #15Screaming And Flying!
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how come everytime i ran mine and change the reeds, the reed and cages were full of oil.
Also if the wet reeds are quicker how come 99% of all the progas, profuel and u-boats don't run them.
We had this conversation one time at a race, and Big boy(Taylor, kan't remember hiz first name, Galen wuz drive'in hiz bote) tested hiz drag mota with a MADD front, first with injectors in the case, and then in the front(in front ov the reeds), he said there wuz a couple 10ths differnce, with the wet reeds bein quicker!!...I know U kan remember big boyz name, call him and let him tell ya juss how he did tha test, wuz very interest'in...
I wunder if Dave Bush runs a wet reed mota???....
Merry Christmas ole man!!!