2000 SR3 Performance

[warossbach]

I have a new/used 2007 2000 SR3 with 5.0 engine and only 16 hours. I use it in Montana at 3500 ft altitude. I mainly use for water sports. Had trouble when arrived with existing prop in terms of hole shot and switched to 17/14.5. Now I can get decent pull out but worried about max RPM and speed. So far with this set up, max rpm is about 3750 even though engine spec is 4400. Likewise max speed is about 44. Both seem very low, particularly rpm. Checked linkage and it appears I am getting full throttle but cannot get anywhere close to max rpm. Any suggestions appreciated. Is it a break in issue? Prop?

[seapuppy]

what prop did you change too....at 3500 ft that shouldn't affect the performance that much .....if you went to a deeper pitch..then your not getting wot....you need to go to a shallower pitch to get the boat to spin up faster.......also might wanna check your timing...your first 20 hrs is the break in period so you should be rather easy on them...


SP :hello:

[SilveradoSS]

I have a 2006 2000 SR3, when I first got it there was a 19p aluminum prop on it. I put on a 19p stainless prop and had the same results you describe. Mine has a 1.47:1 drive ratio which required a lower pitch. I am now running a 17p Enertia stainless prop and get a good hole shot with a top speed of 46-47 on GPS (52 on the dash LOL) my RPM on calm water so I can trim up is about 4300. 3900 when trimed down.

[warossbach]

Boat came with 14.5 diameter, 19 pitch prop. I switched to the current prop which is 14.5 diameter, 17 pitch. With that prop, trimmed up on calm water I am only getting 3800 rpm and speed of 44 on the speedometer.

Hole shot is decent but not overwhelming with this set up.

What is not making sense to me is why I am getting such poor top rpm. I understand that as I reduce pitch I will get less top speed but why still such low rpm with with lower pitch prop. Is that timing problem? I have checked linkage and it seems ok.

[SilveradoSS]

My tach reads 200 RPM low you could check that with a tach attached to the engine. They are pretty cheap at an auto parts store. How does the engine sound? I can tell when mine is reving up to good rpm. Another check would be to look at what rpm you jump to when you hit the gas but before you plane out. Mine goes to about 3000 before I plane out. This tells me my slip is pretty good during the hole shot.

Are you running aluminum or stainless?

[warossbach]

Thanks for ideas. Heading to lake now and will check it out and report. Using aluminum prop.

[warossbach]

max rpm with hole shot is still only 2500, not 3000. Really not getting acceleration I expect. it would be hard to pull out a large skier the way it is now. I don't want to go to lower pitch. I am close to 20 hours now so break in should not be issue. Timing? Choke? linkage? Any ideas?

[seapuppy]

clogged fuel filters....timing yes....check both out...


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