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US3745964A - Racing lower unit - Google Patents
https://patents.google.com/patent/US3745964A/en#:~:text=US3745964A%20-%20Racing%20lower%20unit%20-%20Google%20Patents,a%20propeller%20rotatably%20carried%20by%20the%20lower%20unit.
US3745964A - Racing lower unit - Google Patents
https://patents.google.com/patent/US3745964A/en
One of the principal objects of the invention is the provision of a racing marine propulsion lower unit including means for discharging gases forwardly of the upper half of the path of the...
RACING LOWER UNIT - OUTBOARD MARINE CORP,US
https://www.freepatentsonline.com/3745964.html
One of the principal objects of the invention is the provision of a racing marine propulsion lower unit including means for discharging gases forwardly of the upper half of the path of the propeller blades so that, when the propeller is more or less fully submerged, the water in the upper half of the path of the propeller blades is "desolidified."
High-Performance Outboard Lower Units | Boating Mag
https://www.boatingmag.com/boats/high-performance-outboard-lower-units/
Until recent years, there were only two options to get these features in an outboard lower unit — buy a Mercury Racing outboard fitted with a special Sport Master or Torque Master gear case, or modify the lower unit with a kit. Today, however, a number of outboard builders offer models with high-performance lower units on production models.
Chrysler 120HP Racing Lower Unit - Outboard Paradise
https://stores.outboardparadise.com/chrysler-120hp-racing-lower-unit/
Product Description. This gear case came in on a 120HP short shaft service motor. I started the motor with a force fed water supply to the nose cone of the gear case. Seemed to function fine, no grinding , binding, etc. Driveshaft and prop shaft turn smooth. I drained the gear lube and no water or metal came out but it was grayish in color so ...
Racing lower unit | Boating Forum - iboats Boating Forums
https://forums.iboats.com/threads/racing-lower-unit.565885/
Understand too, that porting the lower unit or venting it like the racing lower is considered a cutout and illegal (except for sanctioned racing) in most states. The two piece lower unit can be ported the same way and, of course, no welding is required. It is however an exersize in futility. The two piece lower unit is about 3 MPH slower than the one piece AND the two …
What makes for a ‘racing’ lower unit? | Antique Outboard Motor …
https://www.aomci.org/forums/topic/what-makes-for-a-racing-lower-unit/
The Army storm Bout Motor had wings to protect the propeller when running up on enemy beaches. Racing lower until are designed for the least drag. Big and rugged is a distinct disadvantage where speed is the major concern. Here is the HD gearcase used on the storm boat Motor. and the gearcase for the racing 460 –.
Quick silver racing lower unit - iboats Boating Forums
https://forums.iboats.com/threads/quick-silver-racing-lower-unit.276897/
Re: Quick silver racing lower unit. The only motor that came with a Quicksilver lower unit that would fit your motor is the Mercury Mark 55H. Made from 1956 to about 1960 (depending on who you talk to), with 1956-1958 being the production years. 1959-1960 models that may have been built were low production and considered to be quite rare, more of a 'back …
Outboard Lower Units | Jasper Marine Engines
https://www.jasperengines.com/lower-units
A fast and economical way to get back in the water is to install a remanufactured outboard lower unit from JASPER MARINE. Remanufactured lower units from JASPER MARINE are built to precise tolerances, are generally in stock for immediate availability and can save you money over the cost of a new unit. Every lower unit from JASPER MARINE receives (where applicable to …
Imco Uppers, Lowers and Drives - Hardin Marine
https://www.hardin-marine.com/c-736-imco-uppers-lowers-and-drives.aspx
Imco SCX Dual Downshaft Lower Unit - 1 1/4 prop shaft. 1-1/4" Prop Shaft; This item does not ship UPS, Please Call To Order. All new, oversized heavy-duty components (bearings, gears, shafts, and case). 2+ years of research, design, development and testing. 3 gear ratios available 1:25, 1:34, 1:50. Accept standard Bravo style propellers. 2" shorter
Sport Master Gearcase | Mercury Racing
https://www.mercuryracing.com/engines/r-series/gearcases/sports-master.html
Mercury Racing announce the release of six new 4.6L V8 300R FourStroke outboard models featuring a 1.60:1 gear ratio Sport Master gearcase. READY FOR WIDE OPEN? Connect with one of our authorized dealers to choose the right power for your build.
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