Simple Muffler Mod with Baileys Parts

[rmihalek]

Here are some photos of a muffler mod I did over the weekend on my Jonsered 2165. The deflector is Bailey's part #HVP 503 58 99 01 and the screen is HVP 503 40 56 01 (firescreen 288). I got these part numbers from one of Brad's posts. It's an easy mod to do and I thought the modders would like to see an up close shot to get an idea of the potential outcome. The camera flash washed out some color, so the first pic is no flash (but a longer shutter speed, so it's a bit blurry). Second pic used flash.

 

[sbhooper]

Those mods are real easy and I don't know why I waited so long to do mine. It really makes a difference for not much investment. Good pics.

 

[roncoinc]

Here are some photos of a muffler mod I did over the weekend on my Jonsered 2165. The deflector is Bailey's part #HVP 503 58 99 01 and the screen is HVP 503 40 56 01 (firescreen 288). I got these part numbers from one of Brad's posts. It's an easy mod to do and I thought the modders would like to see an up close shot to get an idea of the potential outcome. The camera flash washed out some color, so the first pic is no flash (but a longer shutter speed, so it's a bit blurry). Second pic used flash.

Nice job..
What was the cost on the parts ?
also how much for the shipping ?

 

[Steveo_supremo]

Looks great! Here's how I did mine (Husky 371 - same muffler).

I cut the original deflector off, enlarged the opening by about 2-1/2 times and fabricated a new deflector. I also welded nuts inside the muffler so the delector screws on with regular screws instaed of self-tapping sheet metal screws.

 

[blsnelling]

Here are some photos of a muffler mod I did over the weekend on my Jonsered 2165. The deflector is Bailey's part #HVP 503 58 99 01 and the screen is HVP 503 40 56 01 (firescreen 288). I got these part numbers from one of Brad's posts. It's an easy mod to do and I thought the modders would like to see an up close shot to get an idea of the potential outcome.

Looks real good man!

 

[rmihalek]

Thanks Brad. Props to you for idea and the part numbers.

Steveo, what's the part number for that deflector? It looks much taller and perhaps wider than the one I put on the 2165?

When I ordered these parts, the deflector was $8.74 and the firescreen was $4.97. I got four of each for various projects. Shipping was $8.73 to Massachusetts.

 

[thechainsawguy]

[Steveo, what's the part number for that deflector? It looks much taller and perhaps wider than the one I put on the 2165?

I think that may be the 3120 Husky deflector, locally that is going on some of the 372 saws.

Dave.

 

[Steveo_supremo]

The deflector is cutom made.

 

[thechainsawguy]

The deflector is cutom made.

Oh, Ok, it is very similiar to the 3120 deflector.

Dave.

 

[Rudedog]

Thanks. I may do this to my 281/288xp. It looks easy enough that I could do it.

 

[rmihalek]

You just need a Dremel to cut the opening and a drill for the screw holes, that's it.

 

[Rudedog]

You just need a Dremel to cut the opening and a drill for the screw holes, that's it.

How big did you make the opening? I don't want to reduce my back pressure too much. I can't tell from the pic because you have it all finished and dressed out.

 

[rmihalek]

I traced the size of the opening on the deflector and then made the hole in the muffler the same size. It looks like around 5/8ths wide by about 1 inch long. If you have just the stock opening on the muffler can, don't worry about going too big with the Bailey's deflector because you'll still be within reasonable limits with respect to the exhaust port size.

 

[Rudedog]

I traced the size of the opening on the deflector and then made the hole in the muffler the same size. It looks like around 5/8ths wide by about 1 inch long. If you have just the stock opening on the muffler can, don't worry about going too big with the Bailey's deflector because you'll still be within reasonable limits with respect to the exhaust port size.

Thanks. You answered my question. I was hoping it was that easy.

 

[rance]

Why Mod?

OK, so here goes my nooooob question. What do you gain with a muffler mod? I'm guessing a little more power, but is it that much? And what tradeoffs are there? Thanks.

 

[Mastermind]

OK, so here goes my nooooob question. What do you gain with a muffler mod? I'm guessing a little more power, but is it that much? And what tradeoffs are there? Thanks.

Welcome to Arborist Site... Why modd? Well, it's looks like you have a lot of reading to do my friend. Use the search button and play catch up for a few days. But be careful CAD is very contagious.

 

[rance]

I tried searching first. It doesn't seem to work from work(something blocked I'm sure). I'll try it from home.

 

[JasonBmac]

Depending on the saw, you can gain LOTS of power, say probably 10-20% or better.

Modern saws have extremely restrictive mufflers, in order to meet EPA unburnt hydrocarbon emission standards. Restrictive mufflers prevent the incoming fuel charge from making it to the exhaust port before it's closed up.... But they trap some of the spent previous charge in the cylinder too, reducing the active charge in the cyl. Effectively, scavenging is incomplete.

You loose: Any warranty you had (you modified the saw, and had to adjust the carb beyond limiter cap settings too), alot of heat (the saw will run cooler with a mod), and your compliance with EPA exhaust regs...

You gain: Power, some noise, some fuel consumption.

For older saws (Pre EPA regs), there's often little gain, as their exhausts are pretty free anyway. For new saws, the gains can be remarkable.

J