SoCal Jet Boats

Discussion => The No Wake Zone => Topic started by: Donjuan on March 15, 2009, 07:47:45 PM

Title: Different Kind of Baffle?
Post by: Donjuan on March 15, 2009, 07:47:45 PM: I scored some free baffles today from a friend who no longer has a boat. However they don't look like any of the ones that I have seen. They look more like a cyclone. Imagine a A piece of pipe with to pieces of metal spiraling oposite from eacheother from ne end to another. Any one have any idea what kind they are or why they look this way vs. the standard screen looking ones?
Title: Re: Different Kind of Baffle?
Post by: 2savage4you on March 15, 2009, 07:54:57 PM: Is it like the top one ???
http://www.rexmar.com/page238.html
Title: Re: Different Kind of Baffle?
Post by: HDriderTH on March 15, 2009, 08:04:35 PM: Had those in my last jet.
Title: Re: Different Kind of Baffle?
Post by: 2savage4you on March 15, 2009, 08:05:25 PM: Quote from: HDriderTH on March 15, 2009, 08:04:35 PM
Had those in my last jet.

got them in the eliminator too ;D
Title: Re: Different Kind of Baffle?
Post by: Donjuan on March 16, 2009, 10:18:31 AM: They are like the top ones
Title: Re: Different Kind of Baffle?
Post by: beerjet on March 16, 2009, 10:50:08 AM: Probably the best for noise and the worst for power.

-beerjet-
Title: Re: Different Kind of Baffle?
Post by: jet boat performance on March 16, 2009, 10:52:28 AM: Quote from: Donjuan on March 16, 2009, 10:18:31 AM
They are like the top ones

D/J the way those work best is to cut them in half (obviously reducing their noise reduction capabilities) that particular unit is the most restrictive of all tested a few years back theres lots better offerings out there with better niose reduction and less HP restiction ($75 a pair to SCJB members) Tom
Title: Re: Different Kind of Baffle?
Post by: Donjuan on March 16, 2009, 12:48:47 PM: I am not that concerned about the noise as much as I am about the power robbing. How mucj will baffles affect the over all power? Any kind
Title: Re: Different Kind of Baffle?
Post by: beerjet on March 16, 2009, 01:35:11 PM: They'll rob RPM's

-beerjet-
Title: Re: Different Kind of Baffle?
Post by: Luckie Stiff on March 16, 2009, 02:47:31 PM: Quote from: beerjet on March 16, 2009, 01:35:11 PM
They'll rob RPM's

-beerjet-

Hell his boat gave away 1000 RPM in the course of a week, what's a few more? ;D ;D ;D
Double D, give me a call when you're not working.
Skip
Title: Re: Different Kind of Baffle?
Post by: jet boat performance on March 17, 2009, 07:38:32 PM: Quote from: Donjuan on March 16, 2009, 12:48:47 PM
I am not that concerned about the noise as much as I am about the power robbing. How mucj will baffles affect the over all power? Any kind
Typically expect 200 to 400 "turns" , some time the boat "likes" mufflers and actually don't loose or get a small increase Tom
Title: Re: Different Kind of Baffle?
Post by: SLCKREG on March 17, 2009, 08:11:06 PM: A couple hundred r's sounds about right(at least that's what I experienced),also expect your plugs to look a little richer.(prolly part of the reason I lost r's)
Title: Re: Different Kind of Baffle?
Post by: GT Jets on March 17, 2009, 08:36:10 PM: Muffler losses can sometimes be "tuned out" for the most part, it has to do a lot with valve and ignition timing..

I have seen some well built motors work very well with some pretty restrictive exhaust systems including mufflers, Shot Guns work pretty well, but don't quiet things down very much and most rangers don't like em...I had a set (had :banghead: ) that had been modified with progressive springs and had a conical shaped insert in the pipe that were good for about 12 db and cost the engine about 100+/- rpm that was able to be tuned with the aid of a Jesel timing set (external belt) and a dash mounted timing module..

The coolest muffler system I have seen on headers is a cross pipe deal with two Borla mufflers sticking out the back of the boat, you could have a normal conversation while a 500+ inch big block was idling right next to you :screwy:

GT
Title: Re: Different Kind of Baffle?
Post by: jrork on March 18, 2009, 06:23:33 PM: Agree with you GT, those Borlas are unbelievably quiet at idle. We have a number of blower boats running them up here and at idle it's pretty incredible. They do bark when you stand on it but seem to keep the police at arms length.

There are many that like and many that don't like the looks though.

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi63.photobucket.com%2Falbums%2Fh157%2Fjrork%2FIMG_1845.jpg&hash=a5c9c92c87f7a53ac90953ed3cae222a28cdda09)

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi63.photobucket.com%2Falbums%2Fh157%2Fjrork%2FIMG_1844.jpg&hash=70c6d2b76bca4e08ffa24d08839ecb5a9c2f77d0)
Title: Re: Different Kind of Baffle?
Post by: SLCKREG on March 18, 2009, 06:41:33 PM: Interesting,how large and where are the crossover dealios?? Personally I like the upswept headers, I can't really see the crossovers in the pics.. Bitchin boat.
Title: Re: Different Kind of Baffle?
Post by: GT Jets on March 18, 2009, 10:49:22 PM: Quote from: SLCKREG on March 18, 2009, 06:41:33 PM
Interesting,how large and where are the crossover dealios?? Personally I like the upswept headers, I can't really see the crossovers in the pics.. Bitchin boat.

Never seen a crossover on a blown application, they probably don't need it due to the positive flow from the blower...I will see if I have some pics.

GT
Title: Re: Different Kind of Baffle?
Post by: kohensdad on March 18, 2009, 11:07:37 PM: that black tahiti(?) is beee-u-tee-ful! oneday after i get over the stress of rebuilding mine and suck it up to rebuild once again, thats what i'm doin!
Title: Re: Different Kind of Baffle?
Post by: jrork on March 20, 2009, 03:34:37 PM: No crossovers on any of these up here. Just Borla Upswept Dragster headers. All stainless and seem to hold up really well (though they are dry). I gotta admit, I really like them. They sound fantastic in person!!!
Title: Re: Different Kind of Baffle?
Post by: GlassCutter on March 20, 2009, 07:03:42 PM: In the background of that black Tahiti I see a Weinhard truck . . . gotta love the PNW. I used to drink a shitload of Henry W but now they don't seem to sell it around these parts anymore. Started off on batch 43 and made it thru nearly every batch for the next 100. If you don't know what I'm talking about well . . . I guess it don't matter. I'm guessing JRork does.