Merc 175 efi prop question

[arrowslinger#1]

Ok so I bout an 02 nitro 882 with a merc 175 efi
all I can get is about 64 out of it
it has a 25 pitch trophy plus four blade
max rpm's I've hit has been about 5200
haven't measured prop to pad yet
too much prop?


Also so what should this thing idle at? I am 800-900 but it seems like it goes into gear a bit hard
maybe I'm just not used to it


any info would be greatly appreciated
thanks !

[tlwjkw]

See if you can find/try an a45 Tempest 23 preferred or 25. Get tha set up (offset, height) close. Most Trophys (more so tha plus) need work ta make 'em any count.......jmo

[arrowslinger#1]

Measured my prop to pad
it's 4 inches

[arrowslinger#1]

Anyone running this motor combo?

[1FASTLASER]

Do you have a water pressure gauge? Also where are you bolted up at as in which holes in the mount are you using? Idle is about right

[tlwjkw]

Try BBC. They have a Nitro board....

[arrowslinger#1]

Yeah I'm getting nothing over there

[JAA]

Do you have a jack plate?

[arrowslinger#1]

It has an 8'inch setback plate

[tlwjkw]

No reason ta treat it any different than any other "cookie cutter" bass boat for initial set up. Tweakin' can come later. First thing is water pressure gauge is a must have. Best ta lose tha Trophy for a 23 Tempest (a45 best if can find one) but in tha mean time work with ya got. 5200 is way low on rpm. Ya gotta get tha motor as high as ya can with tha stock gear case (wp gauge). With 8" offset you should be able ta "start" at 3 1/2" shaft center line.....I can pm ya a prop guys name and web site that should know pretty much what ya need. He's on Lake Fork and probably touched more of these things (all brands, shapes, sizes) than most. Plus he's also a pretty good boat racer......DSRA.

Oh yeah, 8 ta 900. Just "stab it like ya mean it"......

[1FASTLASER]

Ok now that we got some info on ur boat..... Tlwjkw is correct. In order to get your rig performing better you gotta get some of that motor out of the water. ALL bass boats Ive set up i start at 3 1/2"s below pad and go from there. The Trophy is a good prop just to much for your rig. A tempest will get you much better results. Ive done many many Nitro's and the 882 and the 892 like the Tempest props. Definately put a H2O gauge on it. The 25p Trophy does great on the 892's with a 200. Ur shorter and less ponies so borrow a 23 if ya can,get the motor at 3 1/2 below and start from there. Load your boat like you normly would and run it. Only jack the motor a 1/4 at a time and keep an eye on water pressure. Some of the Nitros I have done can run at 3 below some need 3 1/4. NO less than 15 on the pressure. You want to reach a happy medium for holeshot and WOT numbers.

[Varmint]

No reason ta treat it any different than any other "cookie cutter" bass boat for initial set up. Tweakin' can come later. First thing is water pressure gauge is a must have. Best ta lose tha Trophy for a 23 Tempest (a45 best if can find one) but in tha mean time work with ya got. 5200 is way low on rpm. Ya gotta get tha motor as high as ya can with tha stock gear case (wp gauge). With 8" offset you should be able ta "start" at 3 1/2" shaft center line.....I can pm ya a prop guys name and web site that should know pretty much what ya need. He's on Lake Fork and probably touched more of these things (all brands, shapes, sizes) than most. Plus he's also a pretty good boat racer......DSRA.

Oh yeah, 8 ta 900. Just "stab it like ya mean it"......

that'd be Steve, great guy, bought my SRX from him

[Varmint]

That's why they don't have 200's,your gonna open up a new can o worms at 65+ with bad chine walk issues, on that funny pad, those boats have.

[arrowslinger#1]

Yeah it gets a little squirrelly at 63. Hoping raising the motor and swapping the prop may improve that as well.

I have a water pressure gauge, I'll keep an eye on that. Now if I can find someone with a tempest I can try before I buy

Thanks for all the info guys
I'll keep you updated

[arrowslinger#1]

I tried to call steve, he's off till monday, I will give him a call then. Thanks.