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Originally Posted by stevesxm
(Post 3665879)
with all due respect, you are making your decisions on the wrong basic parameters. if this motor has been run in service for any meaningful length of time then your false assumption is that it was cared for and run in good and propere fashion... a very risky assumption to make.
if the motor is " fresh from rebuild" with zero or low time, you are assuming that it was built correctly and will not blow up in the first 3 hours as so many motors on here do... so... either you research the build in excruciating detail both in the parts that went in and who did it and the raw dyno data or you do a forensic examination with bore scope and oil analysis and cutting open filters and leak downs and all that goes along with that... OR you assume the thing will need $5000 worth of work in the first year and adjust the price accordingly... there are people that would run that motor for 500 hours and it would be as new... and there are people that, like some that have posted on this board ( my oil pressure went to zero so i ran it wide open to see if it would come back or is 575 degrees of oil temp too much ? or i have a noise in my valve train and the motor is on 7 cylinders , do you think i can run the rest of the season like that ?) where after 50 hours the motors would be scrap no matter how good they were to start . there is no advice you can recieve that will take the place of your own assumption of risk, good judgement and due dilligence. my advice is to ignore everything anyone tells you and treat this purchase in the same manner that you would any purchase that has huge risk of financial disaster associated with it... and then act accordingly. |
YEP! ++++ Cavet Emtor!
As Steve says don't pay much attention to the opinions unless they are going to also help cough up the dollars to do possible expensive repairs on a suppossedly "perfect" engine! Do your due dilegence, check and verify or don't buy! Also remember - Rays Law Rays Law says Murphy was a F**king Optomist ! Best Regards, Ray @ Raylar |
I understand all of that but I am asking people's opinions. Would you buy a 27 with a blown 540 with 46 hrs??? I really want a fountain but don't wanna make a bad decision, and my wife gives me enough of the what ifs of stuff going wrong. So I'm really torn here and am going to just do it and buy this boat or have to suck it up and be boatless for who knows how long. Please help
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is the glass half full or half empty?according to some,every engine is a bomb wating to go off,just buy a new boat,with a warranty,but it will probibally blow up because it was put togeather wrong.sure is a lot of debbie downers around these days.you said it has 46 hrs on it now,better not buy it,all blower motors blow up at 50 hrs:Whatever:
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Well I will give everyone all the info I have. It is a 95 27 fever with a blown 540 with dual carbs totally rebuilt by Nickerson with 46 hrs. The drive is a bravo case with all upgraded imco parts larger vertical shaft upgraded gears larger bearings stronger propeller shaft. Wants 20,000. If it were you guys would you buy or pass or what's your input?
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Again: if you are smart and we assume you might be. Check the engine out with good professional inspection and testing. No matter how good the deal seems and even though the engine only has 46 hours, 46 hours could be an eternity on an engine with a problem waiting to happen. Find someone or a shop who can check out the engine and drive and make sure its in the condition you want and expect. Low engine hours on an engine like this could be great provided everything is right in and on the engine and the engine has been used and serviced properly and is not experiencing any problems or issues. Rebuilding and heavy repairs needed from damaged blower engines can be expensive and can ruin your upcoming boating season, so hopefully you have some extra funds to cover the possible failures or breakage that might occur.
Best Regards, Ray @ Raylar |
Originally Posted by ckcgobigblue
(Post 3666528)
Well I will give everyone all the info I have. It is a 95 27 fever with a blown 540 with dual carbs totally rebuilt by Nickerson with 46 hrs. The drive is a bravo case with all upgraded imco parts larger vertical shaft upgraded gears larger bearings stronger propeller shaft. Wants 20,000. If it were you guys would you buy or pass or what's your input?
geeze... stop talking. get off your ass and just get a professional involved, have the boat and motor inspected properly and make a decision that you and only you will have to live with. then run it for a season and tell everybody how you made out. |
You asked "what is the rebuild interval on a blown 540"
I have a blown 540, run as much as 14 psi of boost, using middle of the road , quality parts with pistons with thermal barrier on top/skirt coatings, I use synthetic oil once rings are seated. I rebuild this motor every 100-120 hours, 14 qt oil pan with large cooler, never have I had it fail in the boat to where it had to come out between intervals. It is normally ran between 3200-4000 rpms most of the time on the edge of boost and occasionally turned as high as 6200-6300 and held at 6000-6200 for minutes at a time. Every time I have taken motor apart to "freshen it" I have found something on the verge of failure , usually just a minor part starting to fail that would destroy the whole motor. I am using the SAME parts that other engine builders are using so there is no MAGIC there!! There is no set interval for rebuilds that will be the same on every engine BUT to run 250-500 hours to me the motor would have to be very mild (700 hp or less, mine makes 1100 hp). You have no true idea of how this motor may have been ran and if everything your being told is true. Has it been "patched" back together in the past (welded crank, repaired or sleeved block etc) Does it come with a complete build sheet and receipts from how it was built? Expect to rebuild it and go from their, Smitty |
I'm rebuilding my engines at 250 hrs. They are 580 cubic inches, blown, solid roller cams and make 838+ hp.
During the last rebuild the engine looked as good as it was the day it was built. I could have gotten away with a top end refresh but decided to rebuilt the engine from top to bottom anyway. Mind you, I do not breath fire out of it and push the engine to the limits. If it's a mild blown 540, you should get some good time out of it if it only has 45 hrs on it. Everything is a risk but as stated before, have it checked out and if you like what you see you can decide if you want to roll the dice. |
Yep. A friend had brand new Merc 575SCi's in a boat and one let go at 50 hours with a broken cam.
Another had high dollar 1000hp motors that were supposed to make it to a 75 hour rebuild point, and one dropped a valve at 60 hours. Both of these were built with good parts and were "known quantities" (one Merc Racing, the other a Keith Eickert). It happens. On the flip side, I know guys who get 200+ hours on vanilla smallblocks with big nitrous kits and stock outdrives, and also guys who run close to 1000 hours on Merc blue motors without turning a bolt (not with my blessing however). Outdrives are yet another story. A fresh one with upgraded parts can last 5hours, or two seasons, and you don't know until you live with it a while and keep checking the drain plug. If you are asking these questions, and your wife is breathing down your neck, then you have to ask yourself one more question. ....when this thing takes a major dump and pukes 8 quarts of hot smoking mess into your bilge, are you prepared to face it emotionally and financially? If so, then it may be a risk you want to take. If not, then definitely look for a boat with BONE STOCK low hour hardware. You can then budget for your own upgrades and do them on your own time the right way. MC |
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