Yes, I went from the "log" pipe & Planet to the conventional 1200 red pipe.
1: the water boxes no-where line up right. I had to cut my hot-seat waterbox apart, fabricate a new inside, lengthen the intake plumbing, increase the exit pipe diameter to 3", and finally re-shape the outside of the waterbox to clear a bump in the fiberglass.
2: I welded additional length to the back of the 1200 pipe's exit and created "barbs" on both the water box side and pipe side to keep the thing from vibrating off. ;)
3: I had to make a 3" pipe to bring exhaust from the water box, loop by the seat, and then to the exhaust exit of the craft to eliminate the planet resonator system.
4: I had to make an aluminum plate to go in the rear storage area since the pipe is in a large part of that area now. I later cut and mounted the smaller rear storage bucket from the virage in that location to again have rear storage space.
The power is a lot more "perky" than the log, but the total benefit I can't tell you because I have changed many other things at the same time.
I went to the 4" extended pump, removed the reverse for now, went to hardend shafts, custom prop, 12-vane stator, AAT, no-syphon exit nossle, custom ride plate [6" longer than factory] custom intake grate, beach house sponsons, 93 octane domes, "sleeper" cdi, cleared the choke plates, mild cyl porting, port matched & polished all the air-paths, v-force D-2 reeds, ceramic coatings, different spark plugs, and I think that covers most of it. I hope to throw different ignition coils into the mix shortly.
Now, you hit the gas and it'll dump your passengers in the water behind ya. Before it was lazy for about 3 seconds after WOT while the boat got up on plane.
With a bigger AAT puck, my top speed goes up but it accelerates a bit more slugish. I use a smaller one for racing and this off-shore I've been doing for the better acceleration (arm yanking when you cruise in and out of chop), and that makes my top speed on the GPS about 56 @ 7000 rpm. (Why I need to bump up the power resonance of the pipe ala water-change) The other benefit is that I no longer scrub all my speed off in turns. Stock I'd pull the motor down in the 4k range around turns and it was way slow. Now if you keep it pinned, you'll wash out if you don't watch what you are doing, but it won't pull the RR's off much at all.
I had my brother on the back Sunday, we were pretty much neck and neck with a turbocharged honda for about a mile until we hit some rougher water and we started to walk him pretty bad. We turned around and went at it again with no change, we pulled away. I was happy with those results.
Down side of the changes.... women and children may not like the darty attitude of the throtle.
[ April 28, 2003, 11:43 PM: Message edited by: Skexies ]
1: the water boxes no-where line up right. I had to cut my hot-seat waterbox apart, fabricate a new inside, lengthen the intake plumbing, increase the exit pipe diameter to 3", and finally re-shape the outside of the waterbox to clear a bump in the fiberglass.
2: I welded additional length to the back of the 1200 pipe's exit and created "barbs" on both the water box side and pipe side to keep the thing from vibrating off. ;)
3: I had to make a 3" pipe to bring exhaust from the water box, loop by the seat, and then to the exhaust exit of the craft to eliminate the planet resonator system.
4: I had to make an aluminum plate to go in the rear storage area since the pipe is in a large part of that area now. I later cut and mounted the smaller rear storage bucket from the virage in that location to again have rear storage space.
The power is a lot more "perky" than the log, but the total benefit I can't tell you because I have changed many other things at the same time.
I went to the 4" extended pump, removed the reverse for now, went to hardend shafts, custom prop, 12-vane stator, AAT, no-syphon exit nossle, custom ride plate [6" longer than factory] custom intake grate, beach house sponsons, 93 octane domes, "sleeper" cdi, cleared the choke plates, mild cyl porting, port matched & polished all the air-paths, v-force D-2 reeds, ceramic coatings, different spark plugs, and I think that covers most of it. I hope to throw different ignition coils into the mix shortly.
Now, you hit the gas and it'll dump your passengers in the water behind ya. Before it was lazy for about 3 seconds after WOT while the boat got up on plane.
With a bigger AAT puck, my top speed goes up but it accelerates a bit more slugish. I use a smaller one for racing and this off-shore I've been doing for the better acceleration (arm yanking when you cruise in and out of chop), and that makes my top speed on the GPS about 56 @ 7000 rpm. (Why I need to bump up the power resonance of the pipe ala water-change) The other benefit is that I no longer scrub all my speed off in turns. Stock I'd pull the motor down in the 4k range around turns and it was way slow. Now if you keep it pinned, you'll wash out if you don't watch what you are doing, but it won't pull the RR's off much at all.
I had my brother on the back Sunday, we were pretty much neck and neck with a turbocharged honda for about a mile until we hit some rougher water and we started to walk him pretty bad. We turned around and went at it again with no change, we pulled away. I was happy with those results.
Down side of the changes.... women and children may not like the darty attitude of the throtle.
[ April 28, 2003, 11:43 PM: Message edited by: Skexies ]
Comment