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best prop for an baja 252 boss 700hp
Hi i have an baja 252 boss with an 540 engine
540ci BBC Engine Spec Sheet Estimated Peak Hosepower @5200rpm = 693 horsepower Estimated Peak Torque @5251 rpm = 700 ft lbs bravo 1 1:50 gear ratio What propeller do you recomend for this boat with this setup? and what pitch and propeller diameter? Hope you can help me :) |
My best guesstimate would be a 28 bravo 1.
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I have a 29 mirage plus , lots of bow lift $ 225.00 shipped standard shaft
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Originally Posted by fastscarab22
(Post 3787979)
I have a 29 mirage plus , lots of bow lift $ 225.00 shipped standard shaft
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I have a 5 blade 25.5 x 15.5 - 22degree that will definitely carry the bow.
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Does your motor have a supercharger?
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do you think this props they sell on ebay is good? ore do you recomend an 3 blade prop?
http://www.ebay.com/itm/CUTTING-EDGE...e23fd0&vxp=mtr my engine is not supercharged Engine Parts Of America 540ci BBC Engine Spec Sheet Estimated Peak Hosepower @5200rpm = 693 horsepower Estimated Peak Torque @5251 rpm = 700 ft lbs Owner: Geir Langeland SPEC SHEET: Block: GM Gen VI 4.500 bore 4-Bolt Main Pistons: ICON 4.500 2618 alloy forged flat top Static Compression Ratio Before Boost: Approx 9.5:1 Crankshaft: Scat 4340 alloy forged 4.250 stroke 1-PC seal (Internally Balanced) Connecting Rods: Scat 4340 alloy forged 6.385 length w/ .990 bushing H-Beam ARP 8740 cap screw Heads: Custom 310cc large round intake port/ 119cc combustion chamber, ARP rocker studs, Ferrea 2.250 stainless intake valve, SI 1.880 stainless exhaust valve, Dart adjustable guide plates, Rocker Arms: Scorpion 1.8 ratio aluminum full roller Camshaft: Comp Cam Custom grind Hydraulic Roller: Type of Lobe: Extreme Energy Intake Lobe #3314 Exhaust Lobe #3314, Intake duration @.050 224 = degrees Exhaust Duration @ .050 =224 degrees Intake Lift x 1.8 rocker = .683 gross intake lift Exhaust Lift x 1.8 rocker = .683 gross exhaust lift Oil Pump: Melling M77 Standard Volume High Pressure w/ GM pickup Harmonic Balancer: Power Products ( Neutral Balance) Flex Plate : 168 tooth (Neutral Balance) Timing Set: Comp Cam High Energy Lifters: Howards Vertical Bar Hyd Roller Lifters Oil Pan: GM Wet Sump , 7 Quart Intake: Aluminum dual plane large round port Valve Covers: Custom Fabricated w/ Chevrolet Logo Timing Cover: Aluminum Gen VI Pushrods: Hardened tip |
whats the diffrence between an 3 blade and a 4 blade on this boat? more top end with an 3 blade?
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cleaver propellers will that work on this boat?
http://www.mercuryracing.com/propell...adecleaver.php |
Non SC, 700 hp...... That's some motor!
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my old 252 liked the 4 blade for cruse speed. it was 3-4 mph faster with a 22p 4 then it was with a 23 3blad.
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Originally Posted by geggen
(Post 3788338)
do you think this props they sell on ebay is good? ore do you recomend an 3 blade prop?
http://www.ebay.com/itm/CUTTING-EDGE...e23fd0&vxp=mtr my engine is not supercharged Engine Parts Of America Custom Engines By: Jerry Long Technical Assistance: Call (785) 408-2911 or e-mail: [email protected] 540ci BBC Engine Spec Sheet Estimated Peak Hosepower @5200rpm = 693 horsepower Estimated Peak Torque @5251 rpm = 700 ft lbs Owner: Geir Langeland SPEC SHEET: Block: GM Gen VI 4.500 bore 4-Bolt Main Pistons: ICON 4.500 2618 alloy forged flat top Static Compression Ratio Before Boost: Approx 9.5:1 Crankshaft: Scat 4340 alloy forged 4.250 stroke 1-PC seal (Internally Balanced) Connecting Rods: Scat 4340 alloy forged 6.385 length w/ .990 bushing H-Beam ARP 8740 cap screw Heads: Custom 310cc large round intake port/ 119cc combustion chamber, ARP rocker studs, Ferrea 2.250 stainless intake valve, SI 1.880 stainless exhaust valve, Dart adjustable guide plates, Rocker Arms: Scorpion 1.8 ratio aluminum full roller Camshaft: Comp Cam Custom grind Hydraulic Roller: Type of Lobe: Extreme Energy Intake Lobe #3314 Exhaust Lobe #3314, Intake duration @.050 224 = degrees Exhaust Duration @ .050 =224 degrees Intake Lift x 1.8 rocker = .683 gross intake lift Exhaust Lift x 1.8 rocker = .683 gross exhaust lift Oil Pump: Melling M77 Standard Volume High Pressure w/ GM pickup Harmonic Balancer: Power Products ( Neutral Balance) Flex Plate : 168 tooth (Neutral Balance) Timing Set: Comp Cam High Energy Lifters: Howards Vertical Bar Hyd Roller Lifters Oil Pan: GM Wet Sump , 7 Quart Intake: Aluminum dual plane large round port Valve Covers: Custom Fabricated w/ Chevrolet Logo Timing Cover: Aluminum Gen VI Pushrods: Hardened tip |
i am thinking about an 5 blade
Cutting Edge Series III 5 Blade Labbed Cleaver Propeller cutting edge 5 bladeManufactured from stainless steel one piece castings, then hand labbed, Cutting Edge Series III, 5 Blade Labbed Propellers are manufactured with strength and accuracy in a one off environment. Each propeller is tailored exclusively for the customer’s individual hull type, power and performance requirements. Available in both right and left hand rotation as well as matched sets. Sizing availability ranging from 14 3/4” - 15 11/16” diameter with pitch available in one inch increments, odd or even from 22” to 36”. Polished or race prepped satin finish available. Not a propeller for the faint of heart! Blistering top end performance and seat stabbing hole shot as well as increased mid range speeds are experienced from this large hub 5 blade cleaver with razor sharp edging and aggressively pointed tip design. In testing, this is our fastest propeller yet! Blade tips can be rounded slightly for swimmer safety. Comes on plane easier and sooner while staying on plane longer, this labbed propeller excels in all areas of high performance. http://cuttingedgepropellers.com/our-props can i buy this in 26 pitch to? ore do i have to go down to 24-25 pitch. ore do you recomend an 4 blade prop? |
Originally Posted by articfriends
(Post 3789003)
Somebodys blowing sunshine up your arse,this combination will be lucky to make 620 hp IF that. I don't know why someone would use a single pattern cam with only 224 degrees at .050 and then .683 lift. Buy a 26 LABBED, you will not be turning much more prop than that. It would take 30 degrees more duration and motor would have to be turned alot closer to 5800-6000 to think about making 700 hp , Smitty
Smitty you're damn right The Merlin 540 is a 630 hp motor if memory serves correct and I'd say this one is identical to one. A Friend of mine put one in a 242 Baja and it had a 26P Mirage in it and thats all it needed.. plus I would've blueprint the bottom and take the Hook out of it. |
Originally Posted by geggen
(Post 3789141)
i am thinking about an 5 blade
Cutting Edge Series III 5 Blade Labbed Cleaver Propeller cutting edge 5 bladeManufactured from stainless steel one piece castings, then hand labbed, Cutting Edge Series III, 5 Blade Labbed Propellers are manufactured with strength and accuracy in a one off environment. Each propeller is tailored exclusively for the customer’s individual hull type, power and performance requirements. Available in both right and left hand rotation as well as matched sets. Sizing availability ranging from 14 3/4” - 15 11/16” diameter with pitch available in one inch increments, odd or even from 22” to 36”. Polished or race prepped satin finish available. Not a propeller for the faint of heart! Blistering top end performance and seat stabbing hole shot as well as increased mid range speeds are experienced from this large hub 5 blade cleaver with razor sharp edging and aggressively pointed tip design. In testing, this is our fastest propeller yet! Blade tips can be rounded slightly for swimmer safety. Comes on plane easier and sooner while staying on plane longer, this labbed propeller excels in all areas of high performance. http://cuttingedgepropellers.com/our-props can i buy this in 26 pitch to? ore do i have to go down to 24-25 pitch. ore do you recomend an 4 blade prop? |
ok thanks for the help i think i will try this propeller from cutting edge and see 26 pitch 4 blade.
this will work good ?? http://www.ebay.com/itm/CUTTING-EDGE...e23fd0&vxp=mtr |
they have that prop in 2 sizes 15 1/2" OR 15 1/4” what will be the best choice?
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I would be worried about those stainless exhaust values! INCONEL is the only way to go.
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whats the problem with the stainless exhaust valves?
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they like to break off and make a real mess.
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The stainless valves are fine just dont run it hard for long periods. I was told the same thing and I put incolnel in mine(supercharged). since then i have met a few people running stainless and they run wide open for ten minutes or so. Make sure your jetting is a little on the fat side and you should be fine. My opinion.
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