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Originally Posted by islandracer
(Post 2078522)
I use labbed 28's 4 blade on my 31 with 496 HO's
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I might know of a 2003 31 with 500's trailer, ac/heat, refrig. vacuflush head real clean boat that should be for sale shortly. I can find out more info if you'd like
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Originally Posted by carrboy
(Post 2077698)
John's right about stbd impeller...it's a tough one buy I've done it...only took an hour but an hour of hell...he's wrong about the speed ... u will see 72-73 TOPS!!!No b.s.!!!I have friends with the same boat and power and that's all you'll get on the best day...4 people and fuel,70-71...gps numbers of course.Oh,the spark plugs?Have fun!!!That's the tough one:eek: Can be done,like anything...shop here charged a friend $700 to do it so it's worth doing yourself...we have 10 of these 31's in the cny area and we all talk...any questions just ask...I sold mine w the 525sc's...that was the one to buy(90mph):cool:
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My 31 may be for sale if the gas prices dont level off soon....Wesco Racing engines dynoed at 485 hp 74mph gps with a little chop....
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Not for the sake of arguing, Carrboy, but you are saying that your boat w/ 525SC's(actually 490+ prop-shaft according to Merc Racing) VS. HO's @ 425 prop-shaft was 17 -18 mph faster??? Man , I wish I could get I could find that speed in 135 hp. Most of the later 496HO 31's came with a 26", and would spin a labbed 28 B1 after break-in time and run 74 - 77 with a little chop under the hull(speedo showing you 80).
Hugh |
Well,we already had a couple replies that were within 1-2 miles per hour of what I stated...as far as mine the boost is at 7.5#'s and stock is less than 5#'s...they say 40hp per # of boost...do the math...if they will spin a 28p then 77 is the number and my boat is only 10 -12 mph faster...everyone I know is spinning 26p...I'm spinning 32's,so again,easy math.
Mike |
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I'm too chicken to see what ours will do. I would be interested to hear any thoughts? Prior owner said 102 with labbed props but everyone tells tall tails when trying to sell their boat...:rolleyes: 85 gets scarey and all you can hear is the blowers you can't hear or see. I don't know how some people have the balls to do it...
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I hear ya about the tell tale part and the scary part...everyone adds 5-10 mph to the speed:rolleyes: ...my 386 has yet to see over 85 and the previous owner told me 92...I knew better when I seen the 30p props and I know the rpm's of the 500's...as far as getting scary over 85 in a 31,OH YEAH!!!...if that will run 102:eek: video it,I'm not getting in there:chick: ...are those 575's stock?What props are on it?Either way,that engine compartment looks great!!!Mike
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Thanks. Blue is always pretty. It has stock 575SCI's with the superchillers added. Bravo I 32P props. Did get it up to 92 (with a little more throttle left) on Torch Lake ONCE last year and you could actually see the fuel gauge dropping. :D THAT HURTS
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Originally Posted by 43Thunder
(Post 2078824)
I might know of a 2003 31 with 500's trailer, ac/heat, refrig. vacuflush head real clean boat that should be for sale shortly. I can find out more info if you'd like
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