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4:1 Identification & Can they be saved?

  • Thread starter Thread starter Shaughn
  • Start date Start date
S

Shaughn

Guest
Hey all,

So here's the beatup 4:1 that is on the new bike, I think it may be a Mac, but I am not sure and am hoping someone here can identify it.
The PO beat the bottom of it up, and while I don't want to buy a new exhaust this season (~300 not in the budget), I do want to clean her up some.
The pics below are after sitting in Jasco Paint stripper for an hour or so, and it didn't really do anything (at the same time it stripped my tank well), so this may be a powder coat?
I am going to try and bang out the dents on the bottom from the inside ith a long heavy rod, as I don't imagine it is cost effective cutting and getting someone to weld a new tube in place (I may be wrong).
Does anyone think the uneven restriction will have a significant impact on performance (vs. correct running, not max output)?
It's dented about 5/16" at the worst.

http://malafide.net/GS750E/Exhaust/

Also, does the Mac exhaust, if that's what this is, take some kind of canister?
This is a tapped hole on the end that threads through both the main horn into the end plate, which seems to imply that it once secured in the actually muffle, which is now apparently held in by the beating the end of the horn has taken. Can someone confirm before I try to remove this muffle? Thanks again all!:D
 
MOST 4into1s have a removeable baffle that is in fact held in place just as you say. Personally, i cant identify it, but it doesnt look salvageable to me anyway. If it were my bike, id be on the look out for a new VH pipe on fleabay. I see them on there all the time for 240 or so. Cant beat the Vance and Hines for the money.
 
It's a MAC. I have one on my bike, and flat out hate it. Dont waste your time.

Get something else.
 
i have had 2 V&H's now and loved both.....

havent heard many good things about the MAC's
 
I am going to be buying a new pipe to replace my original rusty pipe and was leaning towards Mac because I read that you can retain you center stand with good filter access etc. I just read that the V&H is the same except with better build quality. I dont want to remove my center stand. Can anyone confirm that?
 
gearhead13 said:
I am going to be buying a new pipe to replace my original rusty pipe and was leaning towards Mac because I read that you can retain you center stand with good filter access etc. I just read that the V&H is the same except with better build quality. I dont want to remove my center stand. Can anyone confirm that?
Click to expand...
My cafe didnt require removal of the centerstand, and ive seen quite a few GSs with different 4into1s that also kept the centerstand. The VH generally has a good upsweep to it and comes out clear around the frame where the centerstand is. I dont see why you'd have to remove it on the GS models. I know that some other bikes you do, as a bunch of the guys on the DTT board with Hondas complain about having to.
 
from what i have seen you dont have to ever with a V&H on a GS.....

i have put them on 2 bikes and kept centerstands on both
 
80GS750 said:
from what i have seen you dont have to ever with a V&H on a GS.....

i have put them on 2 bikes and kept centerstands on both
Click to expand...

I'm very torn because the lines of the bike would be much better as you look through it if the centerstand was gone after my V&H is installed, but not having a centerstand is a PIA for sure.
 
doctorgonzo said:
I'm very torn because the lines of the bike would be much better as you look through it if the centerstand was gone after my V&H is installed, but not having a centerstand is a PIA for sure.
Click to expand...
I pulled my centerstand OFF my cafe, for weight savings and looks, but its CAKE to just stick it back on there when i need it. I dont even put the spring on it, simply because when i need it, its only for a short time. Has worked quite well.
 
TheCafeKid said:
I pulled my centerstand OFF my cafe, for weight savings and looks, but its CAKE to just stick it back on there when i need it. I dont even put the spring on it, simply because when i need it, its only for a short time. Has worked quite well.
Click to expand...

Good idea. I think I'll do the same. Just a couple bolts right to pop it back on. Hey was that cam cap useable for you? It was rougher than I remembered.
 
doctorgonzo said:
Good idea. I think I'll do the same. Just a couple bolts right to pop it back on. Hey was that cam cap useable for you? It was rougher than I remembered.
Click to expand...
Its a little bubbled, but I will run it on my buffer and see what happens. If'n that dont clean it up nice enough for the G, i will just use it on the cafe, as its not my PRETTY bike...lol I appreciate you sending it to me tho man! Thanks much!
 
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