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Vance & Hines 4 into 1 repacking

Discussion in 'XJ Technical Chat' started by co.dirtbiker, Aug 20, 2026 at 10:14 AM.

  1. co.dirtbiker

    co.dirtbiker Active Member

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    Is there anyone familiar with the Vance & Hines 4 into 1 aftermarket exhaust for the 750 Seca? Can they be repacked?

    One of my biggest complaints on my 750 is that exhaust. A bit too loud for my taste. I am hoping maybe some fresh packing might quiet it down a little. I see one bolt that looks like it might hold an end cap in place, but I hate to crack it loose and risk breaking something (it's likely stuck) only to find out its non-serviceable.
     
  2. cds1984

    cds1984 Well-Known Member

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    Send a pic of the muffler. I have transac mufflers and they may be similar.
    The transac baffle is held in place with a rivet nearer the base and the end cap likewise a few rivets at the end.
    Either way I would drill em out and repack with fibreglass bats, I guess, and stick more rivets in.
    When I got them I had to drill the rivets as I didn't tell the chap I needed an angled end cap so he sent them afterwards. Hmm long story but you get the gist of what I'm getting at.
     
  3. co.dirtbiker

    co.dirtbiker Active Member

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    Should probably just try to pop that bolt out and see what it happens. Looking at it close-up in the pic it doesn't look too rusted in place.

    upload_2026-8-20_13-18-45.png
     
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  4. Rayzerman

    Rayzerman Member

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    Can you squirt some penetrant in one of the back holes..... let sit for a day... spritz again and loosen the bolt????
     
  5. Dan Gardner

    Dan Gardner Well-Known Member Premium Member

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    Maybe a few cycles of heat/penetrant before you try to crank on it
     
  6. co.dirtbiker

    co.dirtbiker Active Member

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    I sprayed a little penetrating oil on it before bed. Maybe I'll get a chance to take a look at it tomorrow if my usual life stresses don't get in the way again.
     
  7. co.dirtbiker

    co.dirtbiker Active Member

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    Ok, answered my own question. It is re-packable, and pretty easy to do. The single bolt holding in the end cap actually came out remarkably easy, and a quick tug with a pair of vice grips through a couple of the holes got the whole inner core out.

    Definitely in need of a repack. No wonder it's so loud. The packing only covers about 2/3 of the core.

    upload_2026-8-22_9-38-50.png
     
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  8. cds1984

    cds1984 Well-Known Member

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    You must be old, like me. I hate exhaust noise.
    I was at an exhaust place getting a new muffler for my stupid car a couple of weeks ago.
    Some people rolled up in an Audi and wanted to make their car louder.
    The exhaust guy told me that the kids like the popping and stuff... And he is there to make a living.
    I told him, at least I know who to blame now...
     
  9. co.dirtbiker

    co.dirtbiker Active Member

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    Yeah, the loud exhausts are popular with the kids around here too. Personally, I think it makes their cars sound like crap and usually makes them run like crap too.

    I always thought the 750 was too loud but didn't realize how bad it really was until I got the 900. It's sooo much quieter. Almost electric. I am hoping repacking the V&H will get it a little closer to that, though I'm sure it still won't be at stock levels. Ideally, I'd like to go back to the OEM exhaust, but ones in decent shape are hard to come by. I did find a rolling chassis including the pipes for $200 a couple years back. I wanted to snag it, but it was an 8 hour round trip and I'm not sure my 22-year-old, 230,000-mile Honda Pilot was up for the trek over the Rockies and back towing a trailer.
     

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