Search results

  1. H

    One riser 60 degrees hotter

    Sea trial was a complete success today. Starboard side riser never got over 120 degrees out on the water. Port side never got over 83, but I hear that's normal. Infrared gauge confirmed all temps including block temp were steady and within spec. Turned out great, thanks!
  2. H

    One riser 60 degrees hotter

    I took both hoses that go to the manifolds off and started it up for a minute or so. Interestingly, the flow to the HOT side is getting 80% of the flow. The cool side didn't have much water flowing out. On the trailer, using a level, the side that is cool is up higher than the cool side...
  3. H

    One riser 60 degrees hotter

    Thanks for the troubleshooting idea, i'll check the flow. The flapper issue is possible. They are original, but seemed just fine when I had the exhaust apart. Boat has low hours, maybe 75 hrs.
  4. H

    One riser 60 degrees hotter

  5. H

    One riser 60 degrees hotter

    Sure thing. What info would be helpful? I purchased the parts through powerboatsupply and they suggested the full flow gaskets. it's a 1998 4.3 vortec 2bbl (0L072138 serial). The kit i purchased for the conversion also comes wiith full flow gaskets. I have an alpha one gen 2 outdrive. thanks!
  6. H

    One riser 60 degrees hotter

    Thanks for the info. is a 60 degree variance normal? this is the only boat i've ever owned, and it had the batwings previously which didn't have that big of a variance in temperature.
  7. H

    One riser 60 degrees hotter

    The thermostat housing has the plastic sleeve with a 160 thermostat. I used the silver graphite infused full-flow mercruiser gaskets on the risers.
  8. H

    One riser 60 degrees hotter

    I appreciate the info about rpms. The lower side was the hotter side, which is perplexing.
  9. 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...
  10. H

    riser bolts too long

    So I called multiple fastener stores (fastenal, etc.) and no one had the correct grade 8 studs. Ordering them online would take a long time. You guys know how it goes with ordering parts for a project. It's hard to get all of the required parts on time to complete a project in the correct order...
  11. H

    riser bolts too long

    The bolts in my kit came with what looks like red loctite already on them. Is that a requirement?
  12. H

    riser bolts too long

    Thanks for the input. All parts are brand new and the threads and such are nice and clear.
  13. H

    riser bolts too long

    Thanks for the input so far fellas. Guess I'll cut the bolts and chase threads. Conversion project has been moving along nicely until this hiccup. Put in new valve stem seals, fuel pump, impeller, blower hose this year. I've only ever worked on this boat. Just a Bayliner 1850, but has...
  14. 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...
Top