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I have a Superliner with a single stack.  I bought another Superliner as a parts truck that has dual exhaust.  I want to add the second stack to the truck I run everyday . The parts truck didn't have the cross members that form an X between the two muffler mounts.  I've seen them on some other Mack's with dual exhaust.  Does anyone have dual stacks without the cross members? Am I going to need to get some?

 

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I don't think they all had cross braces.  The one on my 89 looks to be homemade.  I don't think my family's 88 sleeper had them mounted behind the bunk, but one always shook and eventually broke the mount.  There is also the option of running a single tie rod between the brackets as my MH has.

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wouldn't take a lot to make nice looking cross brace. heavy wall pipe   ( 1 in ? ) with ends flatten out. drill hole both ends  and bolt to some brackets. duals always look sharp. my concern is the added noise behind drive side. had a customer that demanded duals  on a rented COE.  dual set was installed . wasn't long after came back  complaining too much noise in bunk . 

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exhaust noise was the written complaint. main issue was the two team drivers thought their sh-t didn't stink. they were also the pair given  one of the first 866 's on the road for trials. FL700. i'm being careful NOT to call it a prototype this time . LOL '' I still remember the day it came in on  flat bed. front axle was back passed the fuel tanks. my "baby" was totaled and I  WAS PIS-ED

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As far as team drivers go I did a little of that back in 1990 didn’t care for it I had pretty good luck with most of the guys but they did hook me up with some real idiots sometimes Bob

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  • 4 weeks later...

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