97 advance-4 strokes

[Speck daddy]

Any expierence or heard any story's on adding 4 strokes on to a 97. 247 advance?
Main concern is weight vs performance ?
Thank you

 

[wahoo33417]

Speck: I have no actual experience, so take my comment for the two cents it's worth. Four strokes were the reason why Grady extend the running bottom on the 247/248 and renamed it the 257/258. I suspect that Grady would give you an honest answer if you call them.

 

[stimp]

What did you end up going with? I have the same hull and looking at repowering from the yamaha 250 ox66 in the near future.

 

[Fishtales]

Dig into the specs and brochures on GW website. Twenty years ago in the 2-stroke days, hulls were not as beefy as the motors were lighter. The last thing you want to do is overload the boat from a weight or HP perspective. GW should be able to help with this.

 

[SkunkBoat]

weight is weight, HP is HP(well, as much as HP was ever HP...)
The weight of 4 strokes has come down
Find out the weight you have and get close to it.
Inline 4 cylinder 200s from Yamaha and Suzuki are viable replacements for the old HPDIs and ox66s

 

[Fishtales]

Check the specs for your boat over the years, you will see that GW beefed up the transoms when the 4-strokes were introduced. Just make sure you don't over load a 20 year old hull for insurance purposes as well as transom health.