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Help me build a blower motor #803713 09/17/10 01:31 PM 09/17/10 01:31 PM
Joined: May 2009 Posts: 831 Missouri G galen OP super stock
galen OP super stock G Joined: May 2009 Posts: 831 Missouri	Winter is coming so I am going to start collecting for the blower motor project. I have a world block, 440-1 heads. 4.125 x 3.75 eagle assembly at 10.23 to 1. Thinking of selling the rotating assembly and going Callies/Grp. I am going to run a roots type probably in the 12.71 range. Looking for 1200 hp range. This will eventually go into the boat and the engine in the boat now will end up in the belvedere. Ok I can build a NA engine, never built a blower motor. I am hoping to avoid costly errors or end up buying a bunch of parts that dont work good together. Ready to learn, Where do I start? Any good books or advice out there? What compression? How far pistons down in bore? Is quench still important? Cam profiles, Intercooler? etc. In the boat size limitations and height would not matter. Galen

Re: Help me build a blower motor [Re: galen] #803714 09/17/10 02:58 PM 09/17/10 02:58 PM
Joined: Jan 2003 Posts: 28,067 Irving, TX feets Senior Management
feets Senior Management Joined: Jan 2003 Posts: 28,067 Irving, TX	You mean an actual boat, not just a monster C body, right? We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon

Re: Help me build a blower motor [Re: feets] #803715 09/17/10 10:08 PM 09/17/10 10:08 PM
Joined: May 2009 Posts: 831 Missouri G galen OP super stock
galen OP super stock G Joined: May 2009 Posts: 831 Missouri	An 18 foot Hondo Hydro V-drive, Mopar powered.

Re: Help me build a blower motor [Re: galen] #803716 09/18/10 09:01 AM 09/18/10 09:01 AM
Joined: Jul 2009 Posts: 169 SW WI C cudacustoms1 member
cudacustoms1 member C Joined: Jul 2009 Posts: 169 SW WI	I made 1125hp and 904tq with a 485 cube 440-1 ( 4.310/4.150) 8.4 comp. 6-71 littlefeild 1 to 1 drive on alky.Let know if I can help.

Re: Help me build a blower motor [Re: galen] #803717 09/20/10 11:00 AM 09/20/10 11:00 AM
Joined: Dec 2006 Posts: 3,533 Indiana F Fury Fan master
Fury Fan master F Joined: Dec 2006 Posts: 3,533 Indiana	Quote: ...I am hoping to avoid costly errors or end up buying a bunch of parts that dont work good together. Ready to learn, Where do I start? ... Galen As you're starting from ground zero, would you consider a turbo instead? A Roots is old technology and other compressor types have better adiabatic efficiency (results in less intake charge heat and more power). A Roots also consumes HP off the crank, whilst a turbo uses waste energy from the exhuast and has a much lower parasitic HP loss. A boat also lends well to a water-air intercooler, which can achieve very high cooling efficiency. Roots has far fewer options for an aftercooler (if any?). There are a bunch of turbos on the market, which can be overwhelming, but that also gives flexibility to swap bigger/smaller later if desired. Roots is less flexible? Some book links (some might be old/inoperative): http://www.amazon.com/gp/search/ref=sr_k...;qid=1269882055 http://productsearch.barnesandnoble.com/search/results.aspx?store=book&CAT=27365 http://www.summitracing.com/search/Part-Type/Reference-Books/ http://www.mre-books.com/fuel/turbochargers/

Re: Help me build a blower motor [Re: Fury Fan] #803718 09/21/10 12:05 AM 09/21/10 12:05 AM
Joined: May 2009 Posts: 831 Missouri G galen OP super stock
galen OP super stock G Joined: May 2009 Posts: 831 Missouri	Thanks for the links. I am ordering as soon as I leave here. And no I have not ruled out a turbo. Can a turbo engine be made to come up instantly on power though as I would need in the boat?

Re: Help me build a blower motor [Re: Fury Fan] #803719 09/21/10 12:22 AM 09/21/10 12:22 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Quote: Roots has far fewer options for an aftercooler (if any?). Roots supercharged setups use an air-water intercooler which is sandwiched between the intake manifold and the supercharger. Would work very well in a boat because you could run it off cool lake water.

Re: Help me build a blower motor [Re: galen] #803720 09/21/10 10:29 AM 09/21/10 10:29 AM
Joined: Dec 2006 Posts: 3,533 Indiana F Fury Fan master
Fury Fan master F Joined: Dec 2006 Posts: 3,533 Indiana	Quote: Thanks for the links. I am ordering as soon as I leave here. And no I have not ruled out a turbo. Can a turbo engine be made to come up instantly on power though as I would need in the boat? Turbos will always require some initial exhaust flow before they begin to build boost; a Roots starts immediately (but it's still a function of engine RPM). I don't have a feel for how long that would take in a boat compared to a car, but 'desirable' streetcar installations have boost start to build around ~3000rpm. How quickly does a boat engine hit 3000 RPM when going from idle to WOT? There's the tradeoff, though, that the Roots will leach more HP off the crank than the turbo does via exh backpressure. The turbo's advantage there would allow you to perhaps use a slightly smaller turbo (which would limit overall HP) but build boost sooner. As an example of what I mean: large turbo - 800 hp Roots - 800hp - 50 lost at crank = 750 slightly smaller turbo, quicker boost - 750 hp All my theorizing aside, I highly recommend that you visit here: http://www.theturboforums.com/smf/index.php?board=39.0

Re: Help me build a blower motor [Re: galen] #803721 09/27/10 08:54 PM 09/27/10 08:54 PM
Joined: Feb 2008 Posts: 78 tampa florida E elephant express member
elephant express member E Joined: Feb 2008 Posts: 78 tampa florida	Galen, If It helps I have a Magnesium SSI 14:71 just set up for gas that is striped and out side is show polished with 60 degree rotors for $2500.00 and I have a few stroker cranks that are machined and ready to go. I'll have to look they have been under the bench for years. One is a Bryant. One has 3" mains 2.2 rods and the other is 2.2 rod and I think .020 under stock. I'll relook if you need one. I have $1500.00 in each crank but I'll take $700.00 per crank. Both top fuel Hemi cranks. Thanks Joe 600Hemi@tampabay.rr.com

Re: Help me build a blower motor [Re: galen] #803722 09/28/10 12:46 PM 09/28/10 12:46 PM
Joined: May 2007 Posts: 174 Oklahoma H hemiiroc member
hemiiroc member H Joined: May 2007 Posts: 174 Oklahoma	What are you you going to use for fuel?

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