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Thread: My '90 Plymouth Voyager: suspension and brakes content

  1. #21
    turbo addict
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    Re: My '90 Plymouth Voyager: suspension and brakes content

    Quote Originally Posted by fastasleep View Post
    Yes. It has a LOT more in it, but I can't rev past 5000 RPM. Converter? Too much backpressure from small turbo?
    Did you ever solve this?
    http://www.turbo-mopar.com/forums/sh...500&highlight=

  2. #22
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: My '90 Plymouth Voyager: suspension and brakes content

    Quote Originally Posted by fastasleep View Post
    Yes. It has a LOT more in it, but I can't rev past 5000 RPM. Converter? Too much backpressure from small turbo?
    Not familiar with Big Stuff, but are you sure it is being limited by revs? Not a speed limiter? Happens in all gears?
    What happens at 5000rpm?
    Are you logging?
    Wayne H.

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  3. #23

    Re: My '90 Plymouth Voyager: suspension and brakes content

    Wheming, I wasn't logging at the track, but I saw what it was doing while looking at the RPM and AFR at the dyno. We probably made 40 pulls with it.
    I don't have any wires hooked to the trans, so I don't know how it would limit at a certain speed. Apparently, I was having this exact issue even before I put the Big Stuff on. It does happen in all gears (first is so quick I can't really feel it there), but it definitely happens in 2nd and high gear.
    Tryingbe, NO! I forgot about that! It is the exact same issue. I went back and read the other post you reminded me of.....gonna look further at all of that.

    - - - Updated - - -

    At 5000 RPM it just stays there; can't push past it. It may happen at different RPM, but it is always still really close to 5K. It changes based on boost. The higher I go with the boost, the higher it will go in RPM before it hangs. After a second or two of hanging, the AFR gets a little richer....goes from 11.2 to 10.5 about.

  4. #24
    Supporting Member II Turbo Mopar Contributor
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    Re: My '90 Plymouth Voyager: suspension and brakes content

    Everything I can think of has already been brought up. Will it rev past 5k in neutral? If not, then it's not load based and I would suspect valve springs or something in the tune preventing it from going any higher. If it does, then yeah, I'd say exhaust restriction.

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