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  1. roffey

    I have a question

    I have a question, maybe a dumb one but here goes. If I had twin motors on my boat, for simplicity sake I say twin 100hp. I know the combined horse power is 200 but is that the same as a single 200hp motor. I know the idea behind twin motors is redundancy and not so much power.
  2. roffey

    Breezeworks

    Does anyone know if Breezeworks will ship to Canada? I sent them an email but have not had any response yet.
  3. roffey

    electrinic ignition 488 merc

    I was draining the water from my Thundercraft 488r (470), as instructed I drained the water from the heat exchanger. While down there I noticed a module that was connected to the alternator was completely burnt. Could this be an electronic ignition component? It was connected directly to the...
  4. roffey

    Don't know where to post this

    When I was younger I was a completive skier, really no lie.... I had a warm up routine.. not like this LOL Edit: Not iboats friendly, so basically nowhere ;)
  5. roffey

    I don't like pontoon boats

    I don't like pontoon boats, but this one I like... World's Fastest Pontoon Boat - Brad Rowland's South Bay 925CR - YouTube
  6. roffey

    488r prop size

    I have a 17.5 Thundercraft with a 3.7 488r and a alpha one outdrive. Currently I hit about 4800 rpm WOT with a 19 inch prop. Here's what I am thinking, I should increase the pitch and lower the rpm. Do you think my boat could handle a 23 or more pitch and if so should I be looking at 4 or 3 blade.
  7. roffey

    488r winterizing

    I have a 488R (3.7 merc) with a closed cooling system. I am putting it away for the winter. I checked my owners manual and all it asking I do is check the antifreeze to make sure it's at the right level. With my other I/O I had to run antifreeze through water muffs. What I did for the out...
  8. roffey

    Marine Grease vs. regular grease

    I have a tube of marine grease at home but only one grease gun. Is there a problem with just using marine grease for everything, example car, lawn mower, squeaky wife…
  9. roffey

    Why

    I have a question, why can't I run my I/O with muffs on and motor up. I can see the water coming out the out drive and the motor is not over heating. BTW, I have a closed cooling system if that makes a difference.
  10. roffey

    3.7 488r merc

    Hi all, new to this from. I just recently purchased a Thundercraft 17.5 with a 3.7 488r merc. Has any one had any experience with these motors. For a 4 banger it seems to put out a large amount of hp, 188 hp to be exact. I can run mid 50 at 4800 rpm, this seems a little high, fun but maybe to...
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