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Recomendation for 4-1 Performance Exhaust for GS850G??

  • Thread starter Thread starter Darin Jordan
  • Start date Start date
D

Darin Jordan

Guest
I'm looking to get a new Header and Muffler system for my 1980 GS850G. The current stinger insert is rusted out down near the front end, and won't hold any packing any longer, and I also suspect that the flow isn't what it should be, possibly having too much "open" and not enough or the proper backpressure. I believe the current setup is an OLD Kerker, but I'm not completely sure. (attached a pic for reference)

Anyhow, if you could recommend a good system that works, I'd appreciate it. Would like to get the exhaust setup correctly before I begin the final phase of my jetting adjustments.

Thanks!
 
V&H and Mac are the only readily available choices in the US. BTW, this is a common topic with lots of identical threads in the archives.
 
Nessism said:
BTW, this is a common topic with lots of identical threads in the archives.
Click to expand...


I did a search (GS850 + Exhaust + Header) and didn't really find any recommendations... What would you recommend I search on??

(by the way... I'm sneaking on here while at work, so I didn't have hours to wade through all the posts... just looking for a quick, accurate answer... ;) )
 
Motad works well on the 850. I don't know if you can get them over there though (but they are the 4-1 of choice for UK 850s).
 
chef1366 said:
http://www.thegsresources.com/_forum/showthread.php?t=174165&page=3

Here is a pic of a new Vance and Hines pipe we put on an 850. It fit well, was easy to install, sounded great and looks great in my opinion.
Click to expand...

Hi,

I helped chef1366 install that V&H unit. I was impressed with the exhaust. It bolted right up (with a little persuasion), you get to keep the center stand, and it's not in the way of an oil change at all. I think I'll save my gig money and get one for my bike too. But I'm going to keep my airbox. ;)

P4230016.jpg


P4230018.jpg



Thank you for your indulgence,

BassCliff
 
Last edited:
Thanks for the tips, guys... I was thinking V&H, so it looks like that's where I'll look first.

Here is what the inside of mine currently looks like... This can't be helping it run any better! :rolleyes:

GS850G_muffler01.jpg

GS850G_muffler02.jpg

GS850G_muffler03.jpg

GS850G_muffler04.jpg
 
tkent02 said:
That's just the V&H drag pipes that drag in turns. The normal ones are tucked up high enough they don't scrape until after the frame does.
Click to expand...

They drag too; trust me. The Kerker, RC Eng, V&H and even the Yosh Street header will drag in right handers.
 
Rudeman said:
Just go easy on those right-handers.
Click to expand...

That's just the V&H drag pipes that drag in turns. The normal ones are tucked up high enough they don't scrape until after the solid part of the footpeg does. Maybe it depends on how low your suspension sits.
 
Hi,

I tend to agree with Mr. tkent02. This V&H unit looked like it had plenty of clearance. I did hear Zeke talking about lowering his bike so he might have an issue. But with normal suspension there shouldn't be any trouble turning right. I suppose there is a limit though. ;)

Thank you for your indulgence,

BassCliff
 
Darin Jordan said:
Thanks for the tips, guys... I was thinking V&H, so it looks like that's where I'll look first.

Here is what the inside of mine currently looks like... This can't be helping it run any better! :rolleyes:

GS850G_muffler01.jpg

GS850G_muffler02.jpg

GS850G_muffler03.jpg

GS850G_muffler04.jpg
Click to expand...

That's a MAC pipe baffle. There are still replacements offered for them...as well as the Kerker design they ripped off/bought whatever. Cycle Recycle sells them on their site last I checked. Kerker is now a SuperTrapp property, but I think before they bought them MaC snapped up rights to the old pipes or something.
 
tkent02 said:
That's just the V&H drag pipes that drag in turns. The normal ones are tucked up high enough they don't scrape until after the solid part of the footpeg does. Maybe it depends on how low your suspension sits.
Click to expand...
I dragged my centerstand before the Kerker header.
 
TheCafeKid said:
That's a MAC pipe baffle. There are still replacements offered for them...as well as the Kerker design they ripped off/bought whatever. Cycle Recycle sells them on their site last I checked..
Click to expand...

Thanks for that info. I went to Cycle Recycle (http://crc2onlinecatalog.com/) and looked and it appears that the MAC baffle is currently out of stock. The picture they have there clearly shows that mine is missing a BUNCH of bits and pieces. I'm wondering how that's affecting the performance of my system and if that might be part of my tuning issue??

Not sure where else to look, but I e-mailed CR to see if they might be getting more of these anytime soon. Wondering if there are any other sources or options??
 
Was looking around E-Bay last night and came across the attached baffle insert for my Megaphone....

I'm assuming you can pack packing around the outside of this as well.

Still searching for a "standard" baffle insert, but may consider one of these if that search fails, AND if I decide not to just buy a whole new system.
 
Darin Jordan said:
Was looking around E-Bay last night and came across the attached baffle insert for my Megaphone....

I'm assuming you can pack packing around the outside of this as well.

Still searching for a "standard" baffle insert, but may consider one of these if that search fails, AND if I decide not to just buy a whole new system.
Click to expand...

I went ahead an ordered the baffle above, and then ordered some packing material and new gaskets from Cycle Recycle II... Looking into having the header sandblasted and maybe alumicoated or ??? as well... We'll see if it's cost effective. Otherwise, I may just have it blasted and then paint it black. Chrome on the stinger is still really nice, so this will make the overall look good again.
 
Found a coatings shop that will sandblast and flame-spray aluminum coat (alumicoat) my header for me for around $150.00.... Think I'm going to pull it off the bike and go for it.
 
Got the header back yesterday, and the baffle for the megaphone arrived as well as the packing.

Painted the header with VHT Ultra-High Temp black over the Alumi-coating, buffed the megaphone, installed the baffle with packing, and got it all back together tonight.

Sounds great, looks clean, and by initial tests, seems to have helped the stumbling situation. Will know more about that after a few long rides.

Bike sure looks cleaner!! AND, I am into this for around $250.00, vs. the $325 or so (plus shipping) for a new system.
 
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