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  1. WenghisKhan

    Thermostat Housing Upgrade (???) Following EMI Thunder Exhaust Upgrade (1983 Merc 305 898R)

    Ladies and gents....yes, you too can go from this (left pic) to this (right pic). Why would you want to do this? No idea. I purchased the EMI Thunder Exhaust almost two years ago before the fiberglass work began, so once I realized what was involved it wasn't feasible to try and return it. TBH...
  2. WenghisKhan

    Thermostat Housing Upgrade (???) Following EMI Thunder Exhaust Upgrade (1983 Merc 305 898R)

    I've been lurking around for the past two years throughout a restoration of a 1983 Glassmaster Supreme (1983 Mercruiser Sterndrive 898R, 305 2bbl. Engine s/n: 6238904. 'R' Drive s/n: 6262040. Center rise 3" 15 degree exhaust, 140 degree thermostat). BLUF: Question/sanity check request...Has...
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