Reflooring the boat would be a good winter project Any advice on how to do this would be appreciated
Either that was before the dawn of GPS or you were turning some serious RPMs!Zen_Nemo said:I had a '91 240 with the 454 Mag in it. The prop was a Mirage Plus 21 pitch worked over by Houston Propeller and would run 68-70 all day long.
You would have to turn a 22" prop to 5600 RPMs to see 70. That's assuming 10% slip which is unlikely with that setup.PachangaSS said:Unless Houston Prop tweaked it up in pitch...?
I believe 11% is considered good.Mkos1980 said:Whats an average amoutn of slip. I put my stuff into the calculater. 4600 RPM's 21 Pitch Speed 55.1 and they said realistc speed should be 62 something and it gave me 11% Is that bad or good?
It wasn't before GPS, best GPS was, if I remember, 69.8. So you are correct, I was off .2mph. Great day for it, low humidity, downhill with a tail wind.Super24 said:You would have to turn a 22" prop to 5600 RPMs to see 70. That's assuming 10% slip which is unlikely with that setup.
I heard Houston Prop does great work but the math doesn't add up.
Not trying to be a jerk, just trying to give some realistic exectations.
assuming it is EFI. timing light works on all.Super24 said:A merc scan tool should be able to verify a tach too.
As posted above, your prop slip is way too high.Zen_Nemo said:I had a '91 240 with the 454 Mag in it. The prop was a Mirage Plus 21 pitch worked over by Houston Propeller and would run 68-70 all day long.
Put a 21-23p prop on it for starters.
I have a 1991 Baja 240 hole shot sucked! I ended up pulling out the floor and the stringers, all we rotted! When I pulled out all the saturated foam it weigh 900lbs! I have replaced stringers floor and foam . Just finished the fiberglass and painted the inside. I’ll be in the water haulin butt soonWow water coming over the hatch now that doesn,t sound right under any condition,if he is waterlogged can he fix by drying it out over a period of time or does he have to rip out all the wood?