Looking for the Best Switchable Exhaust Tips
 

I have seen some older threads on this topic but was wondering if anyone had any more current information on switchable exhaust tips? I need to get the ones that don't require the Y Pipe. I see that Teague makes them. Does anyone have any experience with them? Do they quiet the boat down enough to even make it worth it?

TC G

Electric solenoids burn out or air cylinders leak, take your pick.

I would take electric over air any day.
I have the Teague's' and love them!!
Installed them back in 03 I think.

Teague on mine. No complaints

Teague on mine since 2001, no burnt solenoids. The key is adjusting the solenoid so that at full open and full close, theres still a little bit of slack in the flapper (i.e. you can wiggle it). Reason being, if the solenoid isn't fully extended or retracted, it builds up a lot of heat and kills it. Setup is the key.

Do they quiet the boat down much? I had silent choice on my last boat and they were great. Loud when you wanted to be and quiet when you didn't. I wish Teague would put a video together for his website or You Tube to show the difference. For those of you that have the Teague's, is there a big difference in noise levels?

Theres pretty substantial difference in sound. It won't be as much as a quick and quiet system where the exhaust goes out the prop obviously. I haven't held a decibel reader up to it, but its a big change. They're only for use at idle though, you can't drive around with the exhaust closed, too much backpressure.

Thanks ToMorrow

That's what I was looking for. I just want to shut them down if I'm idling and having a little cruise. Otherwise I like it open and loud.

TC G

I'm pretty sure that Teague says they are OK up to 3500 rpm, which is an OK clip for most boats. I used to cruise around all the time with them closed no problem. They are pretty quiet when closed, just a little louder than silent choice.

Yep 3500 is right. But I don't think theres too many boats that get on plane without exceeding 3500. I guess if you were already on plane below 3500 then you could switch them.

Why dont they run the pressure ones the other way and use manifold vac to pull them closed? Hit gas, lose vac and springs pull open. Pull off throttle and vac pulls them shut.

Good question. Same as the cowl induction hoods on Chevys back in the 70's.

I love this idea!!!!
As for noise level, I pass Wisconsin properly measured testing! Meaning waiting for the reader to stabilize! MN just tags you on the first reading and does not wait!
That being said, its 84 with t502's
It is noticeable open and closed, I will be on the hose again this week I will try and remember taking a video and see how it turns out.

That would be Awesome MnFastBoat. I look forward to seeing it.

TC G

But can u carry on a conversation idling or running around at 3000 rpm and not have to yell to the person beside u or the nav. seat.?

Opps never did a sound or video :(
Sorry

It is noticeable at idle and running from open to closed. But from the photo you can tell mine can be heard from all angles :)[ATTACH=CONFIG]548345[/ATTACH]
Due to MN patrols I typically run mine closed 80% of the time anymore :(
Even getting on plane! I have pushed it to about 4-4200 rpm but after that I open them.
Usually if I am running that speed I know the patrols are not around. :)
I will say that there is a huge power gain from open to close getting on plane!
If my backseat is full or I want to get on plane in a hurry I open them, and it is noticeably quicker getting up!
However I still love them!

Just do GGB Inserts and be done with it.

http://marineexhaust.ggb.ca/

The switchable ones make me nervous with an aggressive cam and I swear the swichable tips made me blow my exhaust manifold gasket.

^^^^^^^^THIS!^^^^^^

I am on a very strict lake when it comes to noise. My GGB inserts did a fantastic job of quieting the bark on stock 496 HO's and I didn't notice a speed loss. I was never once bothered by Marine Patrol and I saw plenty of other boats that were last season. I am curious how well they will do with the new exhaust and added compression next year.

I have GIL air operated. They'll blow open in the mid - high 3's, but can manually hold them closed up to about 4300 if there's a patrol in the area

I have been really impressed with the Gibson Full time mufflers that came on the Spectre. Haven't been checked by the marine patrol yet, (They don't really hassle us down here about noise, just MANATEE Zones :( ) but they are really well made and they really knock down the noise...

http://gibsonperformance.com/i-22957...n-110001.html#!

Shogren has some killer deals on lots of used switchable and full time mufflers. http://www.shogrenparts.com/