I have a 99 31SS and am repowering with quite a bit more power. I don't have shorties or anything trick (to speak of) and was wondering how fast you have been with your 31SS and how is the handling at those speeds? Say 90-100mph? I measured my X-dimension and if I am correct, it sure would benefit from shorties, but I can't afford them right now.... maybe in the winter. I have been real close to 80mph with the old power and it was handling well IMO.
575's bumped up a bit (650ish?) and -2" shorties and lots of dialling in ran around 98-99 gps. I think it got a little loose at that speed. They are very stable up to around 85, then start to loosen up. I haven't driven one past the low 80's myself. Just repeating what I've read and heard.
I'm not looking to set the world on fire or re-invent the wheel.... the new motors are shaping up to be pretty stout. Maybe somewhere in the low 700's. I don't do alot of high speed blasting, more cruising speed.... but it would be nice to cruise at 65 or better with an occasional blast.
I was just curious how this hull does at higher speeds and what has been done to achieve some sort of compromise between top MPH and handling.
We run 575's with super chillers... thats about 650HP... motor is 550 then additional 100 from the super chillers. The best we've seen is 92 mph.... dont like to wind it out too much... but the boat handled great! No chine walk and felt very connected.
Last edited by SonicBunny; 10-20-2009 at 08:11 PM.
Hello Sonicbunny I Also Have A 31ss Its A 1995 With Home Built 502's Best Speed So Far Is 82.4 Gps. Im Spinning 28 4 Blade Bravos At 5400 To Get That. What Props Are Tou Running And What Rpms? What Drives Do You Have And How Far Are They Below The Bottom Of The Boat, Mine Were At 63/4 Inches Below But I Put Some Imco Shorties Ont It Now Im At 43/4 Inches Also Is The Bottom Of Your Boat Straight, When I Look At The Strake On The Bottom It Has A 3/16 Hook At The Transome Does Yours? If You Put A 4 Foot Long Straight Edge On It You Can Tell.your Boat Seems To Run Very Well If Your Bottom Is Straight It Looks Like I Have A Little Progect For The Winter Thanks In Advance For The Info. John M.
John, the hubby said the following: 34 bravo's, 5400 RPM, we are running a set of XR's and have a set of XZ's. now that we need to try. Not sure on the X dim...
Hello Sonicbunny I Also Have A 31ss Its A 1995 With Home Built 502's Best Speed So Far Is 82.4 Gps. Im Spinning 28 4 Blade Bravos At 5400 To Get That. What Props Are Tou Running And What Rpms? What Drives Do You Have And How Far Are They Below The Bottom Of The Boat, Mine Were At 63/4 Inches Below But I Put Some Imco Shorties Ont It Now Im At 43/4 Inches Also Is The Bottom Of Your Boat Straight, When I Look At The Strake On The Bottom It Has A 3/16 Hook At The Transome Does Yours? If You Put A 4 Foot Long Straight Edge On It You Can Tell.your Boat Seems To Run Very Well If Your Bottom Is Straight It Looks Like I Have A Little Progect For The Winter Thanks In Advance For The Info. John M.
John, I wonder what the 30's are gonna do now. Although1300 w/ 34's sounds interesting. Thats It ... I'm cutting out the Hatch. Need a new swim pad anyway. I already told Julie its getting cut. )
Fast speeds in a 31ss
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