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  1. The Yamaha 70 is the same powerhead at the...

    The Yamaha 70 is the same powerhead at the Mercury 50-60hp Yamaha added their own touch.
  2. Cool, yea i may need to drop some pitch and or...

    Cool, yea i may need to drop some pitch and or diamiter but i know i could sell the 12x22 easily as they are very good on the f4s boats, i may try one of Mr Hills props if it dosent work or trade...
  3. Yea i knew it was a higher pitched prop not best...

    Yea i knew it was a higher pitched prop not best for oval racing, im not racing but i do long runs down in the Florida keys 100+ miles ( all straight ) sold my supercharged waverunner and am...
  4. Hounddog, how does Toms 4stroke Merc perform? I'm...

    Hounddog, how does Toms 4stroke Merc perform? I'm sure it dosent accelerate as quick as the two stroke and being stock how does it compare? Is he running in the modified class of 2 strokes with it...
  5. Ron, have you herd of anyone that used Simons...

    Ron, have you herd of anyone that used Simons tune and said it was worth it? I would like to try one of your semi cleavers once my 13' bullet boat is done, will try my 12x22 merc cleaver first and...
  6. If there was a package I'd buy it but once you...

    If there was a package I'd buy it but once you start messing with Cam duration and what not a special tune would need to be made I would think, Simon performance does have a tune for the Merc 60,...
  7. Tom is a great guy, he gave me alot of info on...

    Tom is a great guy, he gave me alot of info on the Merc formula race, I'm finishing up my boat soon it's a 13' bullet, I'm not racing but I want the most I can get out of it. It's heavy at 400lb bare...
  8. Hi ron, Are the semi cleavers performing best on...

    Hi ron, Are the semi cleavers performing best on the merc 4 strokes? If Evinrude would release a mid hp with a short shaft and a good lower unit that would be great, but dosent look like that will...
  9. Not sure, I have heard 6500 rpm is safe any...

    Not sure, I have heard 6500 rpm is safe any higher is asking for trouble with the valves. Ill be happy with 6500, they rev up to 6300 stock thats pretty high for a stock 4 stroke. Im hoping someone...
  10. Hate to revive an old thread, but anyone have any...

    Hate to revive an old thread, but anyone have any more info as far as performance is concerned on these 4 strokes? I have a merc formula race 60 15" and like to get it tuned by simon, Ron hill have...
  11. THANKS! The boat is actually a Bullet 130, was...

    THANKS! The boat is actually a Bullet 130, was built in NJ in the 80's and was built to run offshore in poker runs and whatnot, is a scaled down version on a full size off shore race boat. Millions...
  12. Thanks for the info, Boat should be less than...

    Thanks for the info, Boat should be less than 300lbs after itrs all built back up i want to say in the 275 range.
  13. Fast fred building engines still? Engine options for my 13' Boat

    Hello everyone. I'm in the process of rebuilding/recoring a Bullet 130 13' mini boat. These boats from what i have read respond best to 15" mids with as little setback as possible. Im trying to...
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