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  1. H

    One riser 60 degrees hotter

    I just completed a single piece batwing to two piece wet joint conversion on my 1998 4.3 i/o raw water cooled bayliner. I used all mercruiser parts including the graphite style riser gaskets. Prior to this, I also installed a new impeller, which I've done numerous times. Buttoned up the install...
  2. H

    riser bolts too long

    Morning, I'm converting my 1998 4.3 i/o from the single piece batwings to a brand new two piece genuine mercruiser setup. the riser bolts i received in my kit are approximately 1/8 - 1/4 inch too long. they bottom out in the exhaust manifolds before tightening up on the risers. should i add...
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