Re: Why so much for marine motors?
What irritated me was that a cam change was going to cost $2500. WTF, the motors were already roller cams so all the guy had to do was buy 2 new cams (at the most $700 in parts) So there is $1700 in labor. If I told the last guy that came into our shop it would cost him $800 in labor to change his cam, I would get the State on my a$$ or he would have gone somewhere else. Plus this guy must be a real moron. He said that Joey Griffin told him to take the fuel injection off and put on carbs?????????
I hate ignorant people like that, They perpetuate the notion that fuel injection is scary voodoo and is worse that carbs. Joey probably had some dusty carbs on the shelf and saw this guy coming with the words "SUCKER" written on his forehead. If you ask if I have carbs or fuel injection on my boat, the answer is carbs, but that is only because I just bought the boat. I WILL be taking them off over the winter and putting on a pair of MEFI boxes. I am a firm believer that fuel injection IS SUPERIOR to carburetors. |
Re: Why so much for marine motors?
How differnt are freshwater cooled marine engines and street engines?
How much is actually involved in converting it? |
Re: Why so much for marine motors?
$2500 is not bad for a cam change on 2 engines if you do it right and get high quality parts. New cam means new lifters too, if you do it right. Also the new cam will require different springs. Thats about $1000 per engine in parts alone.
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Re: Why so much for marine motors?
One word= MARINE :rolleyes:
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Re: Why so much for marine motors?
I was looking at a boat that needed work and repowering.
http://www.bayshorepowermarine.com/pages/11/index.htm Merc HP 525 EFI $ 26,335.00 ; HP 500 $ 22,500 Merc XR Sportmaster drive $ 9,495 Merc Twin setups: $ 71,660 Then I went shopping and found Chief Engines http://www.chiefengines.com/engines.php to offer some fine products at great prices as well as other marine manufacturers: Chief HP 525 $ 20,000.00 Chief 575 HP $27,500 ( $ 1165.00 more than a 525EFI) Chief 675 HP SC EFI $ 30,000.00 (Only $ 3,665.00 more than a HP 525) I was looking at the Chief HP 740 EFI Looks like a great package for the money. Chief 740 HP SC EFI $ $ 33,000.00 Crankshaft Horsepower.......... 740 HP Displacement................... 540 CI Bore........................... 4.500 Stroke......................... 4.250 Maximum RPM.................... 5200-5400 RPM Maximum Torque................. 780 Ft/Lbs Idle RPM in Neutral............ 1000 RPM Compression Ratio.............. 8.6:1 Operating Temperature.......... 142F Timing @ 4000 RPM.............. 34 Degrees Firing Order................... 1-8-4-3-6-5-7-2 Fuel Requirements.............. 93 Octane Minimum Block.......................... Merlin III, Siamese Bore, Cast Iron, Four Bolt Main Crankshaft..................... Lunati 4340 Forged Steel Rods........................... Manley I beam forged 4340 Steel,7/16 Bolts, Shotpeened Pistons........................ JE 2618 Forged Aluminum Piston Rings................... Standard Tension Cylinder Heads................. Merlin VR cast iron C-N-C ported, Rectangular Port Valves - Intake................ Manley 2.300 Severe Duty Valves - Exhaust............... Manley 1.880” Dia. Inconel Cam............................ Hydraulic Roller Lifters........................ Hydraulic Roller Pushrods....................... 080 Wall Rocker Arms.................... Chief Full Roller Intake......................... Blower Shop Supercharger................... Blower Shop 6-71 Fuel Injection................. Chief Competition Engine Managment Fuel Pump...................... Holley dual diaphragm / EFI hi pressure Exhaust System................. Stainless Marine Dominator Oil Pump....................... High Volume / 10 quart Ignition....................... Chief Competition Engine Management / Thunderbolt IV Charging System................ 12 Volt/65 AMP Alarm System................... Chief Competition Engine Management / Audio/ Visual/ Water Temp/ Oil Press. Transmission................... MerCruiser Bravo System, Modified Borg Warner It appears that the price includes the drive as well. 740 HP SC Carb $ 29,000 ($ 3,000 more than a 525 EFI) It just seems that buying the right amount of HP you need in the first place is the way to go if you can. Get a package that is designed from the ground up to handle the extra HP and heat and realizing the XR is good up to 550 HP max beyond that Imco extreme drives or # 6's . Getting a custom built boat makes a lot of sense. In the short term it's about the same price and in the long term cheaper in that the engine is designed for a specific HP. |
Re: Why so much for marine motors?
Kinsler fuel injection is mechanical and somewhat finicky. If someone wanted to use these in a fish/cruiser boat like this guy says then carbs would be more manageable. But if I was looking to go big on a repower the only logical choice would be diesel before you bought those motors for a fish/cruise boat.
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Re: Why so much for marine motors?
If you want to play you have to pay, that is the bottom line
It takes alot of time to build a quality marine race motor. You just dont know unless you have witness one being built right. I am building a 598 ci at the moment and has taking me about 10 hours just to get the clearances on the crank by line bore and hone, changing bearing sizes H`S to HX`s etc. just to get it right on the money. For those of you that know how it is done some of these combos require diffrent bottom and upper bearing sizes just to get the exact clearance on the mains. Anyone can build a motor, however not everyone can build a reliable one. For the person whom started this thread and stated all the parts on the motor on Ebay, a Callies crank is not a hardcore crank to say the least, Crower, Bryant and Lunati are much better. CP pistons are better than a JE piston, yes more $$ but the people who were the pioneers of JE are the owners of CP Pistons. Dont compare a crate motor to race motor, if you do, stay with the crate becuase you dont know what it takes to make power. |
Re: Why so much for marine motors?
2 Attachment(s)
As far as the fuel injection, the intakes are EFI manifolds so it is obvious the seller has no idea about the benefits of fuel injection.
here is the link to the auction http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW |
Re: Why so much for marine motors?
That Cheif motor looks good...I would get those with carbs and aluminum heads for lake mich.
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Re: Why so much for marine motors?
Originally Posted by Back4More
That Cheif motor looks good...I would get those with carbs and aluminum heads for lake mich.
This looks like an engine/drive package that sells for the same price as the 525 EFI: Crankshaft Horsepower.......... 625 HP Displacement................... 540 CI Bore........................... 4.500 Stroke......................... 4.250 Maximum RPM.................... 5200-5400 RPM Maximum Torque................. 650 Ft/Lbs Idle RPM in Neutral............ 1100 RPM Compression Ratio.............. 9.4:1 Operating Temperature.......... 142F Timing @ 4000 RPM.............. 34 Degrees Firing Order................... 1-8-4-3-6-5-7-2 Fuel Requirements.............. 93 Octane Minimum Block.......................... Merlin III Cast Iron, GM Gen VI, Siamese Bore, Four Bolt Main Crankshaft..................... Lunati .Forged 4340 Steel Rods........................... Manley I Beam forged 4340 Steel Pistons........................ JE Forged Alloy Piston Rings................... Chrome Moly Cylinder Heads................. C-N-C Ported Merlin VR Cast Iron, Rectangular Port Valves - Intake................ Manley 2.300” Dia. Stainless Steel Valves - Exhaust............... Manley 1.880” Dia. Inconel Cam............................ Hydraulic Roller Tappet Lifters........................ Hydraulic Roller Pushrods....................... 3/8 Hydraulic Roller Type Rocker Arms.................... Chief Full Roller Carb........................... 950 cfm Holley Intake......................... Aluminum Single Plane Fuel Pump...................... Holley Dual Diaphragm Exhaust System................. Stainless Marine Dominator Oil Pump....................... High Volume Ignition....................... MerCruiser Electronic Thunderbolt IV Charging System................ 12 Volt/65 AMP Alarm System................... Audio/Visual Water Temp, Oil Press. Transmission................... MerCruiser Bravo System |
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