1986 Peterbilt 359 Q's

Discussion in 'Peterbilt Forum' started by tankeryankerpete, Nov 5, 2014.

  1. tankeryankerpete

    tankeryankerpete Bobtail Member

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    May 1, 2014
    North Dakota
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    I'm looking at buying an '86 359. It's got a fresh reman engine in it now. Guy said there's about 20k on it now. The only slight down fall on the motor is the low flow cooling system on it. Not a huge deal to me, I'd convert it anyways. My questions are this: It's got a single stack and breather on P/S. How hard would it be to do dual breathere and stacks? And is an all aluminum frame something to really worry about?

    Thanks
     
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  3. baha

    baha Road Train Member

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    Jul 25, 2013
    ga
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    Does it already have the round hole for the air pipe in the side that does not not have a air/filter?
     
  4. tankeryankerpete

    tankeryankerpete Bobtail Member

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    May 1, 2014
    North Dakota
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    Negative. It's just got the small canister.
     
  5. beemergary

    beemergary Light Load Member

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    Apr 11, 2014
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    Thought all 86's would have duel air cleaners. Just need a Y-Pipe for duel exhaust. I have a 84-359 and look at lots of pics of these trucks.
     
  6. Dexterr

    Dexterr Medium Load Member

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    Jul 25, 2011
    Lafourche parish
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    Mines are set up like it too dual everything except breathers I'll leave it like it came from factory
     

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  7. Dexterr

    Dexterr Medium Load Member

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    Jul 25, 2011
    Lafourche parish
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    Old pic
     

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  8. Jmlviper213

    Jmlviper213 Bobtail Member

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    Aug 30, 2011
    Los Angeles
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    Hopping some one here can help it got a 86 359. I replace the alternator but the little bridge for the ammeter got lost any one know wore I can find it.
     

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  9. x1Heavy

    x1Heavy Road Train Member

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    Mar 5, 2016
    White County, Arkansas
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    Leave the one breather alone, there is no point in two if there is no provision built in for the second.

    A Y or T fitting with somewhat larger pipe to breathe that engine. If I recall, the company pipes were like a two inch or three. A choker.
     
  10. Jmlviper213

    Jmlviper213 Bobtail Member

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    Aug 30, 2011
    Los Angeles
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    The stock alternator is 75 amp? On a 86. The new one I got is 175amp. Peterbilt said that replace it. And should I just run a 1 gauge cable straight to the batteries to charge them. And put a 75 amp fuse in line to the cab feed?
     
  11. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    Jun 14, 2009
    romulus,mi
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    Pete is correct. That would work for proper charging.
     
    Jmlviper213 Thanks this.
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