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Found 5 results

  1. Hello... I'm the happy owner of a 265 SSI 2002 model. But I feel the boat is much slower than it should be. It's powered with a Volvo 5.7 GXI which I believe is putting out 280hp. At full throttle I'm maxing about 34 on my GPS. The props are in good shape. But I'm not sure of the pitch. It's has DPS. The prior owner put a hydrofoil on the outdrive. It gets right on plane. It's been serviced by a professional mechanic every year. Anyone else with the same boat that can chime in?
  2. Hi fellow Chaparral owners. I have recently acquired a signature 240 fitted with the 5.0 Efi Mercruiser (240hp and only 600 hrs with Bravo 3 leg). She is a beautiful boat but really struggles to get on the plane. Had her fully antifouled and load is usually only 2 (lightish) people, 10 gals water and 30 gallons fuel plus luggage as we live aboard occasionally. At best had 25mph (following sea and wind) but usually about 10 mph because she will just not get up! Changed the 24p prop for a high tech s/s 4 blade 20p with negligible difference. 4000 rpm is about best we can achieve. Engine sounds sweet but smell unburnt fuel so suspect we may not be getting full power? Have there been any upgrades for this engine on fuel systems, engine management or whatever? Or perhaps we can re-chip for more power Also concerned about erosion. She is based in salt water in Playa Blanca Lanzarote. However, new sacrificial anodes fitted only weeks ago are being attacked wholesale and notice some damage to the leg. How can this be addressed? Can anybody out there help with these issues? I would love to get this boat running correctly so we can safely cruise to other islands. When I read about others achieving 35 mph I am sceptical as she is a heavy boat and perhaps underpowered but am sure we are not getting the best out of her. Thank you in anticipation Nick
  3. Another thread about another boat got me back to thinking about the performance of our boat. There is very little information online in regards to the performance of the 250 Sig. What I'd like to know is whether the speeds that I have recorded are appropriate for this boat/engine combo. I'll post the stats below and would be interested in what you all think: Boat is a 2008 Chap 250 Sig with Mercruiser 350 MAG MPI (300hp) Boat is exactly 27' LOA and weighs (dry) 6,900lb according to Chap (I know that doesn't include gear, etc.) I am 6'4" and 250lbs and I typically have about 550lbs of pax on board (including myself) I do not know the pitch of the prop All data below is with trim tabs up and outdrive trimmed Here are my GPS speeds and estimated fuel burn: RPM GPH MPH MPG 1,000 1.5 2 1.33 1,500 2.5 4.5 1.80 2,000 4.5 7 1.56 2,500 6.0 3,000 7.5 3,500 10.0 4,000 12.5 24 1.92 4,500 16.5 31 1.88 5,000 23.0 What do you all think? I would have thought I'd be a little quicker.
  4. Hi chap owners. I am getting really excited to get the boat in the water this weekend. As the new season is upon us, on the second year of owning my 246sii, I thought I would pose a question to all those who are savvy about speed and pitch control. Last year (at the beginning of the season) during boat orientation the dealer recommended 1/4 in raise on my prop when I reach above 3,000 rpms. However when adjust to about halfway from 1/8 to 1/4 and get into the high 30s the boat will begin to porpoise or the bow will begin to bounce slowly. I have been thinking of the following 3 options: 1. Do I just adjust the prop down until the boats stops porposing and accept the fact that my guage may be inaccurrate? 2. Do I just assume that when the porposing of the bow stops that it is at the proper pitch? 3. Assume and accept that the current pitch is okay for the particular speed based on the bouncing affect? Thanks for all your input. Here is what I have: 2012 246SSI with Volvo 5.7 GXi 320 HP.
  5. Hey again, Quick question. The speedometer on my boat would intermittently stop working(It lights up on the dash), but the needle doesn't move at all, but after a day or two on the water it would always fix itself and go back to normal and start working again. For the past few times out, it's been completely dead. Someone told me to clean something or other, but i have no idea where that is and if i can do it while still in the water. Any ideas would be greatly appreciated!! Thanks all!!! 2009 Signature 280 -Craig
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