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Thread: Exhaust.

  1. #1
    It's a rockin' Robbo's Avatar
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    Exhaust.

    I had a look through the "HZ Sandman Van Restoration" via the posted link. The twin exhaust run's through two muffler's up near the rear axle. Many year's ago when I had my HZ ute, the twin system that I had fitted only ran through one muffler. Are they all using two muffler's these day's or are there many differences?
    "Proud To Be An Old Fart".

  2. #2
    P Plater saddo33's Avatar
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    i think mine was single muffler, two outlets

  3. #3
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    You can go either way, two mufflers or one.

  4. #4
    I have a HQ ute that I am slowly making into a Sandman replica. I went to the local exhaust shop and enquired about a price for a twin exhaust to slot into my 253 I'm about to put in around 6 weeks time. They said it was going to cost me about $700 installed.

    Basically they said they would pre-order a set up for a HQ sedan and then modify it to make it fit. Anyway it was a twin muffler with twin exhaust.

    While we are on the subject, what is the advantages from a single to a twin?

    Is it better on fuel or more power etc?

  5. #5
    It's a rockin' agr071's Avatar
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    Quote Originally Posted by HQ Sandman Ute View Post

    While we are on the subject, what is the advantages from a single to a twin?

    Is it better on fuel or more power etc?
    This is what i have saved:
    http://www.fordforums.com/f648/singl...xhaust-135371/
    BO6 = Rarer then a Sandman

  6. #6
    Cruiser buck's Avatar
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    My wb has a twin system 2" then a single muffler like the wb statesman with twin inlets and outlets just near the rear axle on a bit of an angle to go up over the diff.
    My Dad has a V12 which he has used 4 wb statesman mufflers to match the original quad system on his car, 2 near the diff and 2 right at the back with ss pipes welded to the 4 outlets on the mufflers, original exhaust was to expensive at $4200.
    Driver -1981 WB kingswood 253 4 speed
    Weekend- AC Cobra replica 302ho(425hp) 4 speed toploader
    Project Complete- SLR 5000 LH mock up(next door Neighbors)
    never late in a 5.0 litre

  7. #7
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    I don't know. The last thing I would ask for at an exhaust shop is a standard system. I reckon a good two in two out single muffler with a twin system and extractors sound better than two separate mufflers.

  8. #8
    Cruiser buck's Avatar
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    Quote Originally Posted by wbute View Post
    I don't know. The last thing I would ask for at an exhaust shop is a standard system. I reckon a good two in two out single muffler with a twin system and extractors sound better than two separate mufflers.
    Would have to agree with wbute, i am very happy with the note out of the single muffler twin in twin out & pacemaker extractors, I had a HZ with twin 2.5" system and 2 seperate mufflers didnt sound as good as the one i have now, and i also think the back pressure was a bit low with 2.5" twin, but that may have been the mufflers almost straight through.
    Driver -1981 WB kingswood 253 4 speed
    Weekend- AC Cobra replica 302ho(425hp) 4 speed toploader
    Project Complete- SLR 5000 LH mock up(next door Neighbors)
    never late in a 5.0 litre

  9. #9
    Quote Originally Posted by agr071 View Post
    Wow, thanks Agr071. This guy knows what he is talking about.

    I am more interested in fuel economy then power or touque gain as I only plan to cruise. I am now siding with a 2.5" single pipe. I want something that sounds good, but fuel efficient too. I think I have read his comments right to get what I need.

    Thanks again.

  10. #10
    It's a rockin' Robbo's Avatar
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    I agree with wbute, the system I had was a 2" with single two in & two out muffler. I didn't have extractor's, couldn't afford them. I had not long bought the ute and 2" was the exhaust size then.
    "Proud To Be An Old Fart".

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