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VE R8 HSV headers and cats on WN caprice-V?

Discussion in 'VF Holden Commodore (2013 - 2017)' started by vol800, Jul 14, 2015.

  1. vol800

    vol800 Vader

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    hey all, after 3 year hiatus...I'm back into a 6litre and back to fiddling with minor subtle mods..it's a 2014 caprice v fitted with a catback hm header 2.5" and a walky CAI. Have the opportunity to pick up some R8 HSV headers with cats...(orginally from a 2012 r8) cheap. I dont mind skinning some knuckles to get them on but does anyone know if they should bolt straight up onto the wn caprice? Any advice gratefully recieved...
     
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  2. vol800

    vol800 Vader

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    hmmmm no one? OK, I took a punt and grabbed a set pretty cheap set from off fleabay.. I saw someone had fitted them to a WM Caprice so I figure I'll roll the dice. As soon as I fit them up I'll update just in case it helps someone else- with 130 views of this thread to date and no takers- there must be some interest in doing it...
     
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  3. ozNick

    ozNick Active Member

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    In the VE (and I presume WM) the HSV headers and cats can be a direct swap out for the stock exhaust manifolds and cats.
    Lots of threads in here on how to do it.
    I for one would like to hear how you go. My HSV headers and cats are on the back porch for now.
     
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  4. villn808

    villn808 Active Member

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    I fitted VE GTS headers and cats to my VF, but it's an SSV.
     
  5. dgp

    dgp Well-Known Member

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    I think people view because they are interested.
    Because the Caprice is LWB, the exhaust systems are longer than the sedan range but I would think headers and cats would all be the same part and the cat back section would be different.
    End of the day I don't know though. Would like to know how you go for interest sake.
     
  6. SnowDoggyDogg

    SnowDoggyDogg 2ltr? = Only milk & juice

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    The cheats way might be to take a look at a few exhaust brands online that sell headers and cats that bolt right up to a stock VE/VF catback (think Pacemaker stubbies do?). If they also say WM/WN then you've got your answer.
     
  7. lmoengnr

    lmoengnr Well-Known Member

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    They will bolt up just fine. The ute and the Caprice use the same mid section, and same mufflers, but MY12 utes have changed rear hangars on the R/H muffler.
     
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  8. vol800

    vol800 Vader

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    OK, they did bolt up just fine- even squeezing in past the steering linkage. Now that they are on..I haven't had a chance to give it a healthy 'off the line' to 'feel' any difference as it's too wet in Melbourne today. From a sound perspective....there is a difference, I think it's a tiny bit deeper but honestly hard to tell. I think it sounds like it's 'pulsing' better throughout the system (benefit of the HSV tri-y?) but again, maybe my ears are straining to hear what I want to hear..still, the exhaust note has changed slightly... It wasn't worth paying for a dyno run before/after so unfortunately any feedback I give (like aural opinion) will be subjective.... If it honestly feels different under heavy acceleration (low end I'm guessing) and if there is any improvement to fuel economy I'll update.
     
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  9. VXBaz

    VXBaz Member

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    It's been a while since you did this. Today I was searching for "WN Caprice mods" and came across your thread (so it's helping me - thanks). What was your eventual conclusion?

    Mine is an almost new Series II 6.2 so would I be able to do the same mod? I'm guessing yes. I'm looking for a way to get a "bit" of extra "something" from the sound. Mine will be a working car so it can't upset any of the Opera goers but I would like to get a little extra V8 presence as the stock system is practically silent.

    I've been next to a grange and a GTS at the lights as they took off gently and although not too loud I can see that a full GTS/R8 style system might be too loud for the "Festival set" but I'm going to drive this car all day every day so I need something to keep me happy. Would love to hear an update. Thanks for the thread.
     
    Last edited: May 12, 2018
  10. dans_vz

    dans_vz Active Member

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    Yes they will fit on your series 2. I've got a set for mine but haven't had a chance to fit them yet
     
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  11. VXBaz

    VXBaz Member

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    Thanks. I'm assuming the engine bays of a Caprice and a commodore are identical with just the "after cat" length being longer in the Caprice?
     
  12. lmoengnr

    lmoengnr Well-Known Member

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    If the HSV system 'too noisy':D, get a pair of bi-modal valves for the mufflers.
    Just keep the valves closed when the 'opera goers' are on board.
     
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  13. VXBaz

    VXBaz Member

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    Sounds like a great solution. Thanks for the suggestion.
     
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  14. Justin Rayner

    Justin Rayner New Member

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    Does anyone know. Would the rear mufflers from a ve gts fit a wm caprice?
     
  15. abuch47

    abuch47 Active Member

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    Should do the sedan wheelbases are different but that should only affect the mid section not rear mufflers.

    e series gts has staggered outlets dont think the WM did so may not clear rear bar but will "fit"
     

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