Most gas inboards are GM based. That doesn't mean they're all the same. Check this out. www.yachtsurvey.com\GasEngines.htm
John --- On Wed, 12/8/10, John Strong <[email protected]> wrote: From: John Strong <[email protected]> Subject: Re: [UnifliteWorld] Re: 318's vs 350's To: [email protected] Date: Wednesday, December 8, 2010, 6:30 AM Crusader is a marine engine company that uses GM cores. Marine Power and Mercruiser use GM too. I'm assuming you have Velvet Drive transmissions - they're simple and tough, and usually worth keeping. I've got a Salty Dog with carbureted 350's and they will push the boat at 22 knots at around 3000. Don't know the fuel burn. Don't want to know! The new engines will come with new cooling systems, so be sure you get them with fresh-water-cooled exhaust manifolds. The only raw water will be in the heat exchangers and the exhaust elbows. You'll never need to replace the manifolds. Bigger cooling systems may mean bigger thru-hulls, seacocks, strainers, etc. Replace all the metal in the exhaust system with fiberglass, and replace all the hose too. EFI will mean modifying the fuel tanks with return line fittings. It may be time for new fuel tanks anyway. You can get new tanks from Uniflite's original tank maker, Coastline Mfg. - they still have all the drawings. As a portion of a repower, not all that expensive. http://coastline-tanks.com/ http://www.mercurymarine.com/engines/inboards/ http://www.marinepowerusa.com/replacement.php Your Sport Sedan is *absolutely* worth repowering. What a great boat! Replacing it with something new of equivalent quality would probably cost $200K. You can do the repower for a tenth of that. Go for it! John Strong [email protected] On Wed, Dec 8, 2010 at 4:04 AM, Suzy-Q <[email protected]> wrote: Thanx Kenny, The quote was for new carburated 350's. I don't know if they were "Crusaders" or not. Is the "Cursader" an upgraded 350? On Dec 6, 11:28 pm, Keith Washburn <[email protected]> wrote: > That's not a bad price if your talking about the crusader efi 350s I > repowered my 32ss with the Crusader 8.1 efi I had 454s the efis are way > more efficient and trouble free. My old engines gave me 13 to 15 knots sob at > about 28 gph the new engines give me about 20 to 22 knots at the same fuel > burn . > > Sent from my iPad > > On Dec 5, 2010, at 10:01 AM, Suzy-Q <[email protected]> wrote: > > > > > I have a 28' Sports Sedan with twin 318's. Engines were most likely > > overhauled in mid-90's. The boat sat for many years, ran rough for a > > while and it was not until late this summer that I got the engines > > working well and could cruise at 2800-3000 rpm. (19 - 22 mph speedver > > land at that rpm). After a few hours of cruising the starboard engine > > started smoking when I returned from a fishing trip. The compression > > was 120psi+ for all cylinders except #4 which was low at 60 psi. I > > pulled the heads and found that the head gasket had failed. No water > > in the oil just oil in cylinder #4. > > > I was planning on replacing the exhaust manifolds/elbows and risers on > > both engines this winter which is not going to be cheap. Now I'm > > faced with the decision to repair/replace the stbd engine as well. My > > mechanic recommends repowering with new 350's and reusing the > > transmissions (approx $22k). To install a rebuilt 318 would cost $8k - > > $9k, including exhaust parts. > > > Anyone with experience in this area? Will the 350's be more > > economical, provide more speed or be easier to maintain over the life > > of the boat. I'm trying to talk myself into spending the money to > > repower the boat and enjoy expensive but some hassle free fishing. > > > -- > > You received this message because you are subscribed to the Google Groups > > "UnifliteWorld" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group > > athttp://groups.google.com/group/unifliteworld?hl=en.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en. #yiv861390354 #yiv861390354avg_ls_inline_popup{padding:0px 0px;margin-left:0px;margin-top:0px;overflow:hidden;word-wrap:break-word;color:black;font-size:10px;text-align:left;line-height:130%;} -- You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en. -- You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en.
