Advice Please: Installed baffles in full Termignoni S4RS now 2 quiet

[dbran1949]

I have had the full termi system on the bike for almost a year now. The bike was way to quiet stock, but honestly it is a little too loud now (I know I'm a pussy).

I was up at Moto Forza last weekend to see the Monster 1100. Moto Forza had pizza and sodas so there were a lot of people there.

As usual standing in the parking lot is just as much fun as seeing the new bike. A guy rides up on a new Tri Colore. I can see that he also has the full termi system but his bike is significantly quieter than mine.

He tells me he installed the baffles. I didn't even know the kit came with baffles but after a little digging through storage, fortunately they were in the box.

Ok now the questions:
1. In the picture there is a small hex head screw. Is that all that holds the baffle in?
2. There is a small hole in the end of the termi (I originally thought this was a weep hole for moisture) I assume this is where the screw goes through.
3. I assume I'll want to put some loctite on the threads. Any suggestions on which type?
4. Finally in the circumference indicated by the blue arrow. Do I need to put any sealer here or is just the slip fit good enough?

Thanks

[Oldfisti]

Slip fit is fine. The small holes are indeed for the baffles. You could use Loctite 294 for a high temp, medium strength app.    272 for high temp, high strength

[dbran1949]

thanks
I think I'll try the 294 then, in case I ever want to take them off again

[hypurone]

A tip for install as they are gonna be a virgin fit: either run the bike to warm the tips or put the baffles in the freezer to shrink em or BOTH. This will help get them in there without too much effort. You might still have to "convince" them with a rubber mallet or the sort... 

No, I am NOT running baffles in mine (for those of you wondering). I just helped a guy get his installed.

[dbran1949]

Thanks I was going to do this saturday morning before my ride. (I need to get to an auto parts store to get the locktite)
Maybe I'll put them in the freezer, then take a ride and put them in when I get back

[LA]

Running the db killers lowers torque output almost 10 lb.ft. at the low part of the torque curve.  If i can find it on a graph I'll post it - an old Brad Black chart.  From 5500 up there's no diff. in torque whether stock/termi/db's in.

Termi's don't make much noise just bumping around either - A whisper by way of Harley standards.

LA

[dbran1949]

Well. I put them in. I first cleaned the carbon out of the tips of the termis with a wire wheel in a drill. I had the db-killers in the freezer overnight. I heated the ends of the termis with a paint stripper heat gun. They went in with minimal tapping. Trickiest part was getting the holes lined up.

The bike is significantly quieter (didn't trigger one car alarm). Bordering on too quiet, damn I just wanted to take the edge off. I do notice the drop in torque, front end doesn't get as light as it used to in third. I wonder if it is running too rich now (I could tell by the smell it was running pretty rich even without the baffles)

I'll ride with them in for a while, I can always pull them out

[DarkStaR]

...
The bike is significantly quieter (didn't trigger one car alarm). Bordering on too quiet, damn I just wanted to take the edge off. I do notice the drop in torque, front end doesn't get as light as it used to in third. ...
...

You could try modifying the baffle to try to find a middle ground between power and noise.

[Oldfisti]

You could try modifying the baffle to try to find a middle ground between power and noise.

Add some holes to the baffles.

[dbran1949]

I suppose I could just start drilling holes into the cylinder bounded by the red box or just start drilling larger and larger holes in the end (blue arrow) which right now is completely closed off



The problem with being a physics nerd is that I hate doing this without a db meter and access to a dyno

[aaronb]

i would drill the end, just start small and keep drilling until you're happy. 

[Oldfisti]

i would drill the end, just start small and keep drilling until you're happy. 

+1   

[DarkStaR]

I would mod both the same, test, and repeat as necessary.

I don't know why, but on most bikes, when one exhaust is covered it makes the other quieter.  Don't know if this will matter in your case though.  

[Oldfisti]

Better yet (but not as simple) drill a series of small holes around the outlet.  The flat area you can see between the two outlet sizes.

[He Man]

wait, arent the holes that thing that baffles it? and drilling more holes would baffle it more?