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› Why won't my MAC exhaust fit??
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Why won't my MAC exhaust fit?? (Read 25 times)
toddlamp8
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Why won't my MAC exhaust fit??
11/09/07 at 21:39:37
I ordered a MAC slip-on exhaust from Dennis Kirk thinking it was going to be an easy install since it's made for the bike right? Wrong, I am having nothing but trouble! There are no instructions (not that I thought I would need them) and while the pipe fits, it appears that the openning is WAY to big (even with the copper gasket) and so when I tighten the POS clamp that was included, the metal starts to fold and I end up with this:
What is going on?
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barry68v10
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Re: Why won't my MAC exhaust fit??
Reply #1 -
11/10/07 at 03:46:58
It looks like the MAC is 1/8" too big. What size does it say it is? You can get reducers called muffler spacers or muffler adapters I forget which...anyway I think they come in 1 3/4", 1 5/8", and 1 1/2"...
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petc0ck mod, white spacer removed, 150 main jet, 12.5" shocks, 16" turnout muff, oil cooler mod, chain conversion, Tkat brace, external fuel filter, fuel screen removed...
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ls650v
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Re: Why won't my MAC exhaust fit??
Reply #2 -
11/10/07 at 05:34:41
Maybe the MAC should use the gasket that goes between the stock exhaust and header pipe? That would account for about 1/8 inch.
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toddlamp8
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Re: Why won't my MAC exhaust fit??
Reply #3 -
11/10/07 at 07:44:39
It is using the stock gasket. That's what the circular part is in the center. I w ill be calling dennis kirk today.
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Savage_Greg
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Re: Why won't my MAC exhaust fit??
Reply #4 -
11/10/07 at 09:35:51
Not really familiar with the Mac, but isn't there some slots in that flared end?
Seems like that would allow the pipe to tighten up...
...might be looking at it wrong too...???
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toddlamp8
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Re: Why won't my MAC exhaust fit??
Reply #5 -
11/10/07 at 10:09:44
Savage_Greg wrote
on 12/31/69 at 16:00:11:
Not really familiar with the Mac, but isn't there some slots in that flared end?
Seems like that would allow the pipe to tighten up...
...might be looking at it wrong too...???
There was one ~1/2" slot. I cut 2 more thinking that would help but obviously it didn't. It's pretty loose on there even with it clamped down all the way.
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bill67
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Re: Why won't my MAC exhaust fit??
Reply #6 -
11/10/07 at 10:26:11
Was that muffler for the savage? If it was i would call them and tell them.
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william h krumpen
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vtail
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Re: Why won't my MAC exhaust fit??
Reply #7 -
11/10/07 at 10:46:13
Toddlamp8.Don't panick I'm busy but I'll be back on line to explain what you're doing wrong in 20 minutues.
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'07, White spacer REMOVED, 152,5 main jet, K&N drop-in filter, Mac exh, Sigma 906, ENM PT15B2 tach, factory s bags, shield, backrest/lug rack, crashbar, Kuryakyn 7980 ext hwy pegs,412-4233C+'09 C50T
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toddlamp8
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Re: Why won't my MAC exhaust fit??
Reply #8 -
11/10/07 at 11:01:18
It's been 30 mins
Please tell me what i'm doing wrong because I feel like I have tryed everything I can.
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vtail
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Re: Why won't my MAC exhaust fit??
Reply #9 -
11/10/07 at 11:17:00
Oke, First take that wrinkle out off the Mac. Clamp a dowel (like a broomstick) in a vice and slide Mac on to it. Lightly tap out wrinkle. Now create 2 more slits with a hacksaw ( I think you already did this)so that you have a total of 4 slits. ( at 90,180,270,360 degrees).
You shouls have 4 tabs on the Mac where it slips onto the headerpipe.Bend these tabs out very slightly for ease of slipping it on to the header. Put clamp on Mac (very loose). Now take the factory gasket (((which on your picture is WAY deep (wrong)) into your Mac))) and slip it on the HEADERPIPE till the STOP (Big ridge). Slip on MAC over gasket till the same STOP. DO NOT SLIDE MAC OVER THIS STOP! You should be able to see the gasket trough the slits. If the gasket doesn't cover the slits all the way use a LITTLE high temp sealer. Slide clamp forward over slits and tighten. The clamp should be clamped over the slits with the gasket underneath, since this gasket is also your SPACER. Make sure the most rear muffler bolt (where it bolts onto the carrier)has the supplied spacer to raise the mac up a bit.
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'07, White spacer REMOVED, 152,5 main jet, K&N drop-in filter, Mac exh, Sigma 906, ENM PT15B2 tach, factory s bags, shield, backrest/lug rack, crashbar, Kuryakyn 7980 ext hwy pegs,412-4233C+'09 C50T
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toddlamp8
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Re: Why won't my MAC exhaust fit??
Reply #10 -
11/10/07 at 11:28:25
Thanks for the write-up but I tried that already. In fact that was how I initially did it. The only thing I haven't done was to put a 4th slit into the exhaust. I didn't even have to bend out the tabs to get it on. It went on very easily, too easily.
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toddlamp8
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Re: Why won't my MAC exhaust fit??
Reply #11 -
11/10/07 at 11:29:43
I think tonight I will put a bunch of slits in it and try again.
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Paladin.
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Re: Why won't my MAC exhaust fit??
Reply #12 -
11/10/07 at 11:34:01
vtail wrote
on 12/31/69 at 16:00:11:
Oke, First take that wrinkle out off the Mac. Clamp a dowel (like a broomstick) in a vice and slide Mac on to it. Lightly tap out wrinkle. Now create 2 more slits with a hacksaw ( I think you already did this)so that you have a total of 4 slits. ( at 90,180,270,360 degrees).
You shouls have 4 tabs on the Mac where it slips onto the headerpipe.Bend these tabs out very slightly for ease of slipping it on to the header. Put clamp on Mac (very loose). Now take the factory gasket (((which on your picture is WAY deep (wrong)) into your Mac))) and slip it on the HEADERPIPE till the STOP (Big ridge). Slip on MAC over gasket till the same STOP. DO NOT SLIDE MAC OVER THIS STOP! You should be able to see the gasket trough the slits. If the gasket doesn't cover the slits all the way use a LITTLE high temp sealer. Slide clamp forward over slits and tighten. The clamp should be clamped over the slits with the gasket underneath, since this gasket is also your SPACER. Make sure the most rear muffler bolt (where it bolts onto the carrier)has the supplied spacer to raise the mac up a bit.
I would appreciate it if you copy this into the TECH section so I can find it next year.
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vtail
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Re: Why won't my MAC exhaust fit??
Reply #13 -
11/10/07 at 11:39:22
NO,NO. No need. The factory gasket on my '07 was a rather thick grey one, and therefore it's a spacer too. The gasket needs to be inside your Mac , flush with the front (not deep inside) and covering the slits. That's also where the clamp goes. But install gasket on headerpipe FIRST than slip on the Mac. Make sure the mac is against the stop-ring on the headerpipe
And yes if the gasket/spacer is deeper inside your Mac, you will pinch it like in your pics
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'07, White spacer REMOVED, 152,5 main jet, K&N drop-in filter, Mac exh, Sigma 906, ENM PT15B2 tach, factory s bags, shield, backrest/lug rack, crashbar, Kuryakyn 7980 ext hwy pegs,412-4233C+'09 C50T
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vtail
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Re: Why won't my MAC exhaust fit??
Reply #14 -
11/10/07 at 11:44:32
Paladin, consider it done
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'07, White spacer REMOVED, 152,5 main jet, K&N drop-in filter, Mac exh, Sigma 906, ENM PT15B2 tach, factory s bags, shield, backrest/lug rack, crashbar, Kuryakyn 7980 ext hwy pegs,412-4233C+'09 C50T
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