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Slip-on mufflers?

  • Thread starter Thread starter Motojoe2492
  • Start date Start date
M

Motojoe2492

Guest
My 83 GS850 has some pretty pitted pipes... I will patch what I can and paint it black until I can wrap it back to the mufflers. I have considered longer fishtail mufflers to bring the tips out past the bags, but this year the budges says I can extend mine back with a slip-on set up for when I can upgrade the mufflers. I will be welding pinholes closed in the crossover pipe.

What are the thoughts on this plan?
 
Rather than weld the pinholes, just get rid of the crossover. :-k

Take a look HERE, the info is in post #10.

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Steve said:
Rather than weld the pinholes, just get rid of the crossover. :-k

Take a look HERE, the info is in post #10.

.
Click to expand...


Not a bad idea, Steve. The only reason I hesitated was because of what (if any) changes it would cause, though I understand any bit would be minute. I might just do that. I want to extend my mufflers backward anyway, so it wouldn't make a difference.
 
"Any changes it might cause"??? The only change will be a very slight change in the exhaust sound. It is so slight, it would likely have to be pointed out, and then you still might not hear it.

As far as slip-on mufflers are concerned, some have had decent success with Harley take-offs. The Sportster model actually looks decent, too.

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Steve said:
"Any changes it might cause"??? The only change will be a very slight change in the exhaust sound. It is so slight, it would likely have to be pointed out, and then you still might not hear it.

As far as slip-on mufflers are concerned, some have had decent success with Harley take-offs. The Sportster model actually looks decent, too.

.
Click to expand...


After I replied I went and read your full post... :p

I put Harley Take-offs on my shadow when I had it a few years ago and they looked great. Got the pair for 25 bucks! Wish I didn't send them off with the bike.... Can't find a deal like that now haha
 
Steve said:
As far as slip-on mufflers are concerned, some have had decent success with Harley take-offs. The Sportster model actually looks decent, too.

.
Click to expand...
Ditto on that.
I have a pair of Hardly Dyna slashcut stockers on my XJ, and aside from an intial setup, they run fine. I discovered the internal baffle plate is positioned differently on each one, to suit the cylinder characteristics of the V-twin, no doubt, but it led to a strange uneven note and a bit of vibeyness on mine.
Soon sorted out the spacing with rigorous crowbar technique and application of stainless pot scrubbers.
The result is a nice, free-flowing system that doesn't sound any louder than the stock pipes.
Oh, yes; and it cost me a quid for the mufflers and a quid for the scrubbers.
Gotta keep the costs under control.
 
Last edited:
Grimly said:
Ditto on that.
I have a pair of Hardly Dyna slashcut stockers on my XJ, and aside from an intial setup, they run fine. I discovered the internal baffle plate is positioned differently on each one, to suit the cylinder characteristics of the V-twin, no doubt, but it led to a strange uneven note and a bit of vibeyness on mine.
Soon sorted out the spacing with rigorous crowbar technique and application of stainless pot scrubbers.
The result is a nice, free-flowing system that doesn't sound any louder than the stock pipes.
Oh, yes; and it cost me a quid for the mufflers and a quid for the scrubbers.
Gotta keep the costs under control.
Click to expand...

I think I found a set, the fella I work with said they're nice long chrome mofos like I've wanted!

I need to do some pit repair on my header pipes though, #2 and#3 are a little spotty, and the "y" on each side has seen much better days. I just need to figure out whether they will be worth saving or if I need to get some fresh 45's to weld into place. Anyone have luck brazing?
 
I have brazed up a set of mufflers, if i recall I used silicon bronze rod and a tig torch, probs not necessary but I had access at the time.
 
greg78gs750 said:
I have brazed up a set of mufflers, if i recall I used silicon bronze rod and a tig torch, probs not necessary but I had access at the time.
Click to expand...

Here at Napa I have some Brass alloy rods (not specifying what kind of alloy) And I hope I could use that with a propane torch.
 
Be aware that the pipe from the header flange to the "Y" is double-walled.

The chrome you see is only on the decorative outer pipe.

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Steve said:
Be aware that the pipe from the header flange to the "Y" is double-walled.

The chrome you see is only on the decorative outer pipe.

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Click to expand...

ALL THE WAY from the 'y' to the flange??? I plan on patching holes and painting everything up to the mufflers. But damn, I didn't know they were just covers!
 
Oh, they are pretty sturdy 'covers', but the exhaust does not touch the inside of the chrome pipe directly.

.
 
Well, not sure which will show it better, so here is the end of the pipe that fits into the "Y", with and without flash:

3DBD8D24-739B-41BA-9CE7-16B5E8F041FD_zpshhdhvwlf.jpg


62F9E050-0E51-4FAF-AB5F-902C2C08E501_zpszkhk2aef.jpg


This is on a set of '79 850 pipes that will be on my wife's bike in a few days.

.
 
If that propane torch is one of those bottle jobbies with a screw on head it won't get hot enough to braze with other than maybe for thin wall sheet metal using silver.
 
The other option would be to get the insides of the headers ceramic coated. Might be worth looking into.
 
Nessism said:
If that propane torch is one of those bottle jobbies with a screw on head it won't get hot enough to braze with other than maybe for thin wall sheet metal using silver.
Click to expand...

Would MAP improve my heat range? I'm not too familiar with the differences temp-wise.

Ceramic coating sounds a bit expensive for how pitted these are. I'm going to pretty them up and seal them to get as much time out of them as I can until I can manage a fresh set. Though I am curious: are there any aftermarket 4 into 2 headers available? I enjoy the look amd sound of a 4 into 1 but for this bike I really want the symetry.
 
Steve said:
Well, not sure which will show it better, so here is the end of the pipe that fits into the "Y", with and without flash:

3DBD8D24-739B-41BA-9CE7-16B5E8F041FD_zpshhdhvwlf.jpg


62F9E050-0E51-4FAF-AB5F-902C2C08E501_zpszkhk2aef.jpg


This is on a set of '79 850 pipes that will be on my wife's bike in a few days.

.
Click to expand...

I see how it works now. I'm wondering how the double wall will effect mig welding the holes shut... Also, pipes 2+3 are welded onto the crossover piece, not thinking it was from the factory. This might make for an ass-pain deleting it, but we'll see. I might just patch the holes, there are less on that than there are at the base of the mufflers!
 
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