Replacement for Mercruiser's Bravo One lower unit replace 1992 and up with the oil passage. Beyond the low water pickup, there is also the consideration of how the gearcase itself will respond to being run higher out of the water, and the faster you go, the higher it will need to be. Ya it took some time, I had no idea how to do it so I just winged it and it turned out has held to 85 so far. Well he's dropped off the page and I've never heard of the idea moving forward so hopefully I'm not violating any promises. Gain top end performance with Teague Custom Marine add on drive lower nose cones, available in low water and mid water pickup configurations. Powrehead will have to come off, I just had it off last week for the solid mounts. If you are already installing an aftermarket kit, This should be a relatively simple fix, you can fill the prop side water inlet, round off your tip, and improve the dynamics of your gearcase. Low water pressure issues at wide open throttle?
The DF250AP is based on the DF300AP and shares the same award winning innovations and designs of Suzuki's flagship outboard. I used a aluminum bit in my dyegrinder to fit it as close as I could. Thanks chinwlker, that gives me an idea of what to do. Home made low water pickup. Repeat process moving down if this does not fix issue. It's more than an itch, it's a rash now! Chet, did you block off you normal water pickups on the sides of the case?
Assembled using 316 Stainless Steel, we have curated a full kit for plugging your lower unit low water pick up inlets which is extremely common for today's high performance outboard boats running the Mercury Marine 1. 50% more volume than any now on the market. I know a lot of people do fill the side intakes but It'll hold water though. Our Price: USD $235. The goal is to reduce parasitic drag, which is a result of form drag and interference drag, directly related to the shape of an object. We're better than Facebook. BOB'S MACHINE SHOP BIG FOOT BRAVO Nose Cone Kit W/ Low Water Pick-Up - DUAL HOSE. A ½ inch ball bearing size nose approximately. I fly fish, dont need it. BOB'S MACHINE SHOP BRAVO 90 (1990 and newer). This fly-by wire control offers silky smooth shifting and throttle response.
Run for distant offshore fishing grounds, cruise to exotic ports or just share time on the water with family. Proven Quality The same superior design as our World Speed Record Holding Big Foot, low water pick-up cones. I left the screen in. I didn't want to go too low, I can always lower it more if I need it. Darris told me how they tested this in real time, by literally blunting the nose of a pointy gearcase by cutting off the tip, and rounding it out. It has 5 inlets on the bottom of the bullet, and 4 holes above the bullet. Speed gains of between 2 to 8 mph. I have run one season so far and the water pressure was 25 PSI at WOT. Can be modified so that it will fit 1988 to 1991. I was wondering if the pressure of the impeller on the LU would overcome the pump pressure.
The outboard motor manufacturers are now furnishing built in low water pick-up cones on all larger performance motors, and as a result the demand for after market low pick-up cones has fallen off dramatically. Next project is to convert from the clamshell cowl to a later model opti that I have on the shelf. Shallow Water Access Travel and fish waters, until now, were unable to be reaches with outboard motors having standard (side water pick-up) gear cases. I thought I had more pictures but I didn't but I got the important parts. Did you plug the top two, and join the bottom two, or is that 4th joined with the newly drilled hole? The advantage the Sport Master had over earlier performance gearcases was the torpedo shape which improved high speed dynamics, water pickup design that helped with water pressure, and flow around the gearcase.
Is there any guidelines for how much surface area to leave open? On top of that, the pointy tip is longer, increasing drag. In most cases this improved top speed dramatically when previous attempts would blowout at speeds above 100 MPH. Removed lower unit and head. Basically, only Mercury Racing, and Seven Marine make a proper OE gearcase that is designed to surface.
The gearcase design becomes critical to handling and safety. Go with a Proven Winner, Go Suzuki. And, it also determines how much water disruption there is. Removed water jacket and flushed out all sand. A picture would be nice but like I said.... It works gerat and took about 7 hours to do. Crescent design provides much better steering control & prop bite all the way out to the tip of the prop blade. A large leech found his way through the waterpump up to the base of the block where it was parboiled. Rigging a 2007 115 merc 4 Stroke on my new 19' stoner cat.
The reason is very similar to why you don't see pointy noses on subsonic aircraft. 02-12-2006, 02:40 PM #3. drill the drain hole right below the main pickups and then combine the new hole and the one above it. Now available in Shadow Black Metallic and Matte Black finish. With a rounded parabolic nose cone, you reduce drag, with less surface area, and the the water becomes less turbulent as it goes around and reaches the prop. I was just curious, because I don't need a nosecone, but I'd like LWP's to raise the engine. Hey Markhp, tell me more about your setup. Installed new exhaust/cooling gaskets, head gasket, water pump housing, impeller, gaskets, plate, water pump base housing/oilseal housing..... Now it won't draw water unless hose fed on start and as it warms up it starts to blow exhaust out of the water pickup in the nose cone. I have the same motor as you only '86 it has the small gear case. Needs to be drilled as part of installation to your gear case. I then used more marine tex to fill in any gaps and make a smooth transition from the nosecone to the case. I left in the thru hull intake however. Rule of thumb is any engines 90 hp or smaller need the inline kit. The High Tech Connection. 02-12-2006, 04:39 PM #7. thats not my case, i only have the top 2 holes plugged.
Walking a fine line, and enjoying the view. I was able to jack the motor about 1/2 to 3/4 inch higher before loosing too much pressure.