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Thread: 1991 Plymouth Acclaim LE

  1. #21
    Garrett booster
    Join Date
    Jun 2016
    Location
    Janesville, WI
    Posts
    177

    Re: 1991 Plymouth Acclaim LE

    I'd bet replacing the valve stem seals will mostly if not completely stop the oil burning. If you use the right valve spring compressor it can be done pretty easily without removing the heads. Just remove the intake and the valve covers carefully remove the cam caps and use a compression gauge hose hooked to the air compressor to hold the valves up. You can usually tell if it's the valve stem seals just by looking at the plugs.

    As stated above the PCV system can suck in oil as well. In my experience it's not really an issue on the newer VCs. You can tell the difference by the location of the PCV valve. It's screwed into the VC on the older 3.0ls instead of the intake. A 91' should have the revised ones.

    I'll admit I'm guilty of using RTV instead of a gasket on the upper intake plenum. Sure makes it a b***h to remove.

    It's probably a good thing that it has no EGR with it burning oil. There was a layer of gunk at least 1/4" thick in my vans original plenum when I opened it up to port it(original engine burned oil for at least 50k miles).

    Cool car!

  2. #22
    turbo addict Turbo Mopar Contributor
    Join Date
    Dec 2005
    Location
    Seattle
    Posts
    7,063

    Re: 1991 Plymouth Acclaim LE

    OEM springs don't even need a tool, just an wrench under a rocker shaft with no rockers (not that I am suggesting taking apart your only set of heads). I have parts, parts parts.
    Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56

  3. #23
    Mitsu booster
    Join Date
    Jun 2017
    Location
    Canaseraga
    Posts
    16

    Re: 1991 Plymouth Acclaim LE

    Always loved the AA models too. Never had one with a 6, just the 2.5, but I'd have to look in PA and south to find a descent one. Every thing here in NY is rotted out from road salt. These things are unstoppable in the snow, I mean deep snow. Every now and then I pass one (or a Shadow) that can't be a NY car, too nice a shape. Just have to wait for some grandmother to part ways with her 60.000 mile gem.... G.P.

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