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  1. 03-18-2019, 04:51 PM #1
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    WavetoWave
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    Allison Grand Sport, Merc 150 gearcase mod

    Thought I'd share an update on our Allison with a stock Merc 150. We did an article a little while ago about gearcase design, and how to improve the pointy nosecones commonly seen on aftermarket cone kits. I modified ours, with just a file, and some sanding. I rounded out the tip, and re did the skeg to improve it. We gained 2 MPH, although we are now hitting the rev limiter, so possibly more. But just thought I'd share in case you wanted to try it.

    Article
    https://www.wavetowave.com/home/2019...cation-testing



    Last edited by WavetoWave; 12-02-2019 at 05:22 PM.
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