Exhaust help needed !!!

cfm · Jul 21, 2005

FYI: most TOWNS around here don't even have a noise ordinance. :laugher: :laugher: :laugher: :laugher:

Kidnova · Jul 21, 2005

rogue2800 said:
Park a Harley in the boat and fire it up. Should drown out the sound of yours and be perfectly legal right?

Better yet....

Put toons on the Harley, paddles on the rear wheel, and splash it {probly do better than 35 mph).

rogue2800 · Jul 21, 2005

I have similar problem with exhaust tips and room.

cfm · Jul 21, 2005

rogue2800 said:
I have similar problem with exhaust tips and room.

That's exactly what we had to do to the 3" tips - cut the top flat so they'd go thru.

cfm · Jul 21, 2005

off subject - Rogue. Are those drive oil temp or drive oil reservoir lines you have ?

rogue2800 · Jul 21, 2005

88's remote oil reservoirs, fully flooded.

Diamond Performance · Jul 22, 2005

cfm, called Eddie Marine today, they said they could make some custom Mufflers for your application. They have 3.5 inch for exhaust tips but not for mufflers.???

Mudball · Jul 22, 2005

cfm said:
No, just to a few pschycologists and Master Voodoo Chiefs.

I meant Graham at GGB!!

He just made Boatally Insane some custom bubblers for his exhaust...
If he doesn't already have something in a 3" clamp on, I'm sure he would be willing to make some...
Kent

cfm · Jul 26, 2005

Diamond Performance said:
cfm, called Eddie Marine today, they said they could make some custom Mufflers for your application. They have 3.5 inch for exhaust tips but not for mufflers.???

How much and could I see the internal design before having to buy?

BTW: I need to boat. I know, I know, But I do and I deserve too, so..............................

I designed something that entails me modifying an exhaust part from another manufacturer. I'm not going to share this now in case it ends up being a disaster.

If it works good I'll let people in on it. :shocked:

Can't friggin believe I'm conjuring up exhaust crap. :angry1: :angry1:

Mudball · Jul 26, 2005

Speaking of your projects, did you do anything more on the water pressure relief valve?

There are some to be sold!! The 'other' site has a couple of threads on them, where people are bawking at the Merc prices...

Bam has the Merc ones for $200 on clearance, but that's still a bunch!
Sorry to go OT...

cfm · Jul 26, 2005

Mudball said:
Speaking of your projects, did you do anything more on the water pressure relief valve?

There are some to be sold!! The 'other' site has a couple of threads on them, where people are bawking at the Merc prices...

Bam has the Merc ones for $200 on clearance, but that's still a bunch!
Sorry to go OT...

Well, you didn't run my new version and sonce my boats are out of the water I am not using one either.

So, the new version - the one you didn't use - is still sitting on my desk.

So............... nope, Nothing yet. :unhappy1:

OldMagicfloat · Jul 28, 2005

rogue2800 said:
Park a Harley in the boat and fire it up. Should drown out the sound of yours and be perfectly legal right?

Here ya go! :laugher:

Kidnova · Jul 28, 2005

FTM said:
Here ya go! :laugher:

WOW, ya can find just about anything about anything on this site :laugher: :laugher: :laugher:

cfm · Jul 28, 2005

Design # 1 failed. Won't fit. What I get for not pulling the boat out of the water first. "Right when you think you know/remember everything" :dead: :laugher:

Design#2 - will check tonight / tomorrow.

All this to get quieter and maybe slower. :angry1: :unhappy1:

cfm · Aug 1, 2005

OK - I'm f'n pizzedff !!!

<a href='http://www.smileycentral.com/?partner=ZSzeb008_ZNxdm006YYUS' target='_blank'><img src='http://smileys.smileycentral.com/cat/14/14_6_12.gif' alt='Chain Gun' border=0></a>

I discovered the 3" tips are actually 2.5" ID !!!

Yes, 3" OD but .25" thick !!! I think these may be cast aluminum.

This is turning out to be a POS project, especially since my last attempt did nothing noise wise.

I need true 3" tips with something soud deadening inside them or clamped to them before I move to the Arctic and just go snowmobiling.

cfm · Aug 2, 2005

Mud - talked to graham a few minutes ago.

Yeh, he laughed and said no way to the 82db's.

Anyway - he can help me out for a reasonable cost and I guess we'll find out how friggin picky the aquapolice are when it's done.

Let's cross our fingers. :bigsmile: :bigsmile:

Mudball · Aug 2, 2005

Yeah, 82db is rediculous...

But, if you are running no muffs now, then running some just might be OK, even if you are over???

If it's 82db at idle, then I'd get some bubblers like B.I. did...
Kent

Boatally Insane · Aug 2, 2005

Mudball said:
Yeah, 82db is rediculous...

But, if you are running no muffs now, then running some just might be OK, even if you are over???

If it's 82db at idle, then I'd get some bubblers like B.I. did...
Kent

With the GGB mufflers and down tubes I'm seeing 82-83 at idle with about 550 pshp

Boat idling in the water
If I plugged the idle relief holes in the bottom of the muffler I'm sure it would be even quieter.

I finally took some decent pictures of it last night, so as soon as I get off work today I'll post them..
Boat underway

I brought Kent's db meter along this past weekend and measured a few boats anchored in the cove we were in.

The Formulas with the silent thunder system measured 82 db with twins and the "plugs" in. A single engine Formula without the plugs in measured 80db

The loudest boat was a single engine Powerquest with no mufflers...97db at Idle!!!!

Doug

cfm · Aug 2, 2005

OK , it's pretty much final.

CP Performance is one of the few that makes the 3" Tailpipes,

so I ordered them thru Don Baca at Triad Marine (advertiser here) http://www.tpmarine.com/ since he graciously helped me get my Eddie Marine stuff for my manifolds/tailpipes.

He gave me a little better price than CP did.

Thanx again Don.

I got the long 15" (5" internal/10" external) so that Graham at GGB could make a longer insert muffler. Every bit counts !!!

Graham (like most others) doesn't make 3" muffler stuff, but since he is a good guy and does make custom requests, he is going to design and make an insert for my circumstance.

Moral to the story - if you need something talk to the advertisers here. They seem to be more personal and thus flexible with Speedwake's needs than other non-advertiser businesses.

cfm · Aug 4, 2005

I found that with the 10" past the hull and the transoms angle, the tips will be mostly in the water. Should quiet it down more.

If anyone you know needs 3" mufflers, let them know Graham at GGB will have the designs to make them and, of course, thank me for being the first to have them made. :shocked: :shocked: :shocked:

Why do I run into this crapz? It's not like boats haven't been around forever. :dead: :dead: :laugher: :laugher:

Exhaust help needed !!!

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