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Originally Posted by techman
(Post 4848412)
I also noticed that the Quicksilver 8.1 and the 540 Mag stroker are no longer available. Looks like this is your Mercury sourced replacement for big blocks with a warranty.
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Im not super familiar with flat plan crank engines, but I didn’t think they churned out much torque when compared to a similar cross plane crank motor?
and someone repowering a “classic” is going to spend $33k on a 400hp motor that sounds cool, but looks like crap? What are they smoking up there? I’m confused… |
Originally Posted by AllDodge
(Post 4848409)
Another thought; how are they building a motor without CAT's these days? Would be great if they could, but don't see how.
Originally Posted by techman
(Post 4848411)
Maybe this is technically a remanufactured engine and not subject to catalyst requirements?
See more here: https://www.mercurymarine.com/en/us/news/quicksilver-introduces-all-new-409-mpi-bravo-engine-a-repower-option-for-classic-boats/ and especially: http://goqcrew.com/introducing-the-n...-bravo-engine/ |
Originally Posted by IGetWet
(Post 4848415)
Im not super familiar with flat plan crank engines, but I didn’t think they churned out much torque when compared to a similar cross plane crank motor?
and someone repowering a “classic” is going to spend $33k on a 400hp motor that sounds cool, but looks like crap? What are they smoking up there? I’m confused… |
More coin than Bam sells their blue 520's for???
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Just found this in addition to;
”Typical required modifications include new engine mounts, adjustments to exhaust components and regearing the sterndrive unit to compensate for the 409 MPI engine's higher rpm range.” https://cimg4.ibsrv.net/gimg/www.off...a9d504cd8.jpeg |
Just found this in addition to; ”Typical required modifications include new engine mounts, adjustments to exhaust components and regearing the sterndrive unit to compensate for the 409 MPI engine's higher rpm range.” |
33k for that or 30k for this.
Gee tough choice,(sic) how many year warranty on the Merc? The LT4 is 3 year. https://marineenginedepot.com/new-62...-airpac-620-hp |
Originally Posted by Wildman_grafix
(Post 4848431)
33k for that or 30k for this.
Gee tough choice,(sic) how many year warranty on the Merc? The LT4 is 3 year. https://marineenginedepot.com/new-62...-airpac-620-hp |
Originally Posted by Mbam
(Post 4848405)
Performance 400 horsepower 5000-5800 RPM Exotic idle quality Great acceleration Flat-plane crankshaft 150# lighter than 8.1L Speed gains with Bravo One X
Technology ECM 555 SmartCraft 10-pin harness Engine Guardian MPI fuel injection Mechanical throttle & shift Black-X valves Dry joint iron exhaust Heavy-Duty iron block Forged crank, pistons & rods Shaft-mounted roller valvetrain Full System Fresh Water Cooling Heavy-Duty Eng. oil & PS fluid coolers Single-point water drain 3-year limited warranty 25W-50 engine oil Long-life coolant Remote oil filter 87 octane fuel 985 pounds. List price $33,425, available next month. |
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