dhadley take a look

[junior1113]

ultima turbo 4 left hand prop -ran out great. best money ever spent. great hole shot. better mph all through throttle ranges. hits 5750 @45.6 gps so i gained 2 on top end too thanks again -paul

 

[Dhadley]

Re: dhadley take a look

Glad it worked out! Those are awsome props for sure.

 

[junior1113]

Re: dhadley take a look

with the jack plate and trimmed out wot rpm is like 5700 with 17 ultima. what would you shoot for if it was yours.93 200 evinrude. thinking about a 15 ultima. everythings fine. just dont want to lug. keep hearing you say 6000. limiter is 6700. another thing will decarb bring rpms up? just want this thing to last u know how that goes. what is the best gas least ethenol? thanks -paul

 

[Dhadley]

Re: dhadley take a look

With ethanol fuel you may not get to 6000 like we used to. If you can keep going up with the plate I'd try that in small steps, you're very close. Going to a 15" prop, at this point, may well slow you down. On a pad bottom hull it'd be easier to get close to 6700, just may not happen (efficiently) with a V bottom.

As for fuel, if you can find 87 non-ethanol that would be the first choice. Some marinas around here have it. We're starting to see the 90 octane, ethanol free but you get away from the ethanol problems and get into the octane issues. Most everybody uses some ethanol treatment like Sta-Bil or Startron and just hopes for the best. A good 10 micron filter is a must. It really seems to be worst on motors with VST tanks and / or injectors. The old carb'd motors seem to be a little more forgiving in some ways.