98 jag

This topic has 9 replies, 5 voices, and was last updated 10 years, 2 months ago by 94eyracat.

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March 30, 2016 at 1:38 am #427219

bhampto
Participant

Have a 98 jag with a 98 200 efi mercury. It has a 23 tempest on it which seems to me to be under propped. It is also really low in water, approx. 4.5 inches below pad. My question is should I be running a 25p on this boat so I can raise the motor up where it should be. BCB which prop would have originally came out on this motor. I believe it was bought with this motor on it. Thanks in advance.Brad

March 30, 2016 at 3:24 am #427220

Bass Cat Boats
Keymaster

Most came with 25 Trophy propellers. Today we would try a 24″ Fury and have your TPI set by a Mercury technician.

March 30, 2016 at 1:23 pm #427221

bhampto
Participant

So I could use a trophy 25. How about a tempest plus 25? and should I take it somewhere and have it adjusted. I suppose you are talking about the throttle position. What prop should I put on it now if you had to recommend one? Last edited by bhampto on March 30th, 2016, 1:28 pm, edited 1 time in total.

March 30, 2016 at 2:55 pm #427222

bhampto
Participant

I see you answered in your previous post. Sorry. Just not sure what I should do. Does changing the prop around make the need of changing the TPI

March 30, 2016 at 4:55 pm #427223

94eyracat
Participant

Changing prop requires no throttle adjustments. A date with google for a night will help you understand adjusting your jackplate height for optimal performance it is something you can do yourself. BCB should be able to give you a good starting point as far as prop to pad height and after that tweaking it yourself will dial it in further.

March 30, 2016 at 9:14 pm #427224

Cajunhunter67
Participant

4.5 inches is too low. Start at 3.5 below pad. I run a 24 fury on my 98 Jag, but run a merc 225. I also had 3 more 5/16 holes drilled in the prop to help with the holeshot.

March 31, 2016 at 4:55 pm #427225

NacCat
Participant

I would start by raising the motor and see what that does for you performance before putting another prop on the boat. I ran a 25 tempest on my 97 Jaguar but I had a Mariner 225 EFI. There is a BIG performance difference between a 2.5 liter 200 and a 3.0 liter 225. What speed and RPM are you getting out of the boat currently?

March 31, 2016 at 5:59 pm #427226

bhampto
Participant

Around 5200 and 62 mph. Thats rough guess. Last few time I have been out it has been a little rough and can run it well. Hopefully this weekend I might be able to get better idea. I think I am going to move it to 4 inches and see how it does. Still think I will need to go to at least a 24 when I get it raised up to where it should be.

March 31, 2016 at 10:28 pm #427227

94eyracat
Participant

Youre getting ahead of yourself dont change props until you get it dialed in better. Your RPMs are very important you need to pay attention to that and get an accurate reading once you can get it out on some decent water and open it up. If you indeed are only turning 5200 RPM you still have plenty of prop to go. I believe max WOT rating for that motor is 5800 RPM so you are far from over revving.

April 1, 2016 at 1:13 am #427228

94eyracat
Participant

Also a fellow Jag owner recommended 3.5″ below pad you should probably listen to him thats the same hull you have out of everyone he probably knows best. Start at 3.5″ below my Eyra runs very good at that setting as many cats do.
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