2013 g changing gear ratio

[chrisschweda]

Has anyone changed the gears on the 2013 g23 to the 2:1 like the 2014 I have heard it is way more efficient and would love to do it I could do the work myself.

[swankster]

I had it quoted and the quick estimate I got was $5k installed with the propeller being about $1k of that.

[chrisschweda]

Was that a new trans or gear change I sure I can change the gears yet I understand the shaft is larger as well yet I wonder if I could keep the same one.

[Devodad]

I also have a 2013 G23 with a 450. I re-propped it last fall to a 2419. Probably won't be anymore efficient but I think the hole shot is supposed to be better. I Iike the idea of switching the gear ratio to 2:1.

[chrisschweda]

My concern is with full ballast and boat full of people and it does not want to get up and I would prefer it to be more efficient.

[swankster]

I'm not sure how they were going to do it, but I'll find out. I had a new 2014 at the dealer ready to make the swap but my 2013 didn't sell and I could not do the swap without it selling it first. I could handle the one year model upgrade price difference but cannot swing the two year upgrade to a 2015. So now I'm in the position of trying to upgrade my 2013. I'm not sure I could handle doing it myself, so I'm having to use the dealer. My biggest worry on the self install would be changing the shaft and keeping it aligned. A big part of the upgrade is the bigger prop which requires the bigger shaft.

[vision]

Certainly the 2:1 with larger prop improves hole shot when heavily ballasted. But does anyone have rpm data at speed or GPH data? I suspect that fuel efficiency goes down unless the larger prop transfer energy much better than the smaller prop.

[xrichard]

It'd be interesting to see real world data. My guess is your efficiency while wakeboarding will go up because you spend less time climbing out of the hole--which is where you suck a lot of gas. For cruising, my guess is you lose a little mileage.

[nyryan2001]

I also have a 2013 G23 with a 450. I re-propped it last fall to a 2419. Probably won't be anymore efficient but I think the hole shot is supposed to be better. I Iike the idea of switching the gear ratio to 2:1.

Absolutely not. Your boat is 18secs 0-23 with full ballast. Put a 2315 on there is 13secs 0-23mph full ballast.

[nyryan2001]

It'd be interesting to see real world data. My guess is your efficiency while wakeboarding will go up because you spend less time climbing out of the hole--which is where you suck a lot of gas. For cruising, my guess is you lose a little mileage.

Roughly 9-10secs for A 450 2:1 on 17" prop 0-23 with full ballast. 550 is 7-8secs.

[Tallredrider]

The dealer who wanted to sell me a new boat is a user as well and gets a new boat each year. He said his fuel bill went down by about 40% with the new tranny/prop combo. Using the boat in the same way as before. Of course, that is coming from a guy asking me to spend 6 figures on his product, but I currently believe him to be an honest guy.

Looks like NYRyan has found a huge benefit in hole shot, I would expect fuel economy as well.