help with over rev???

jzdb-boats

jzdb-boats

Cadet
Joined
Jun 14, 2009
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11
my 2007 merc seem perfect if i trim the motor to run at 5100 rpm's...but if i turn ir revs high....also when pulling out before plaining off it seem to almost slip and over rev....this dosnt happen every time but often enought to wonder....any help would be great...I have a 2007 Tracker pro team 175 it a mod V and was considering going to a 75 hp 4 stroke? any imput on that

Thanks
Bill


also...stupid question but is it bad or hard on the motor to trim while boat is moving...(full speed at times)?
 
C

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,811
Re: help with over rev???

You are running that boat on the pad at 5100RPM. When you turn, it falls off the pad and will ventilate. Only trim it that high, when you are running straight in calm water.

You could lower the motor on the transom, if you like. It will ventilate less.
 
jzdb-boats

jzdb-boats

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Joined
Jun 14, 2009
Messages
11
Re: help with over rev???

and one more question is it hard on the motor or prop to trim the motor while boat is moving...fast...lol...cause at time i will trim the mor=tor out for a little extra speed but trim it down when approaching a turn....is this harmful??
 
corm

corm

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May 12, 2000
Messages
1,241
Re: help with over rev???

Hi,

That is exactly why you have power trim on the engine. Mine is going up or down all the time. Adjusting for boat wakes, other water conditions, speed, and corners. I trim it all the way into the transom to take off and then out as I build speed.. Trim is your best friend. Well, next to a bikini in the boat with you.
 
F

flatcat77

Seaman Apprentice
Joined
Jul 31, 2009
Messages
45
Re: help with over rev???

i had a quicksilver prop that was called a high-five. it was very good for holeshots and corners. i had a three and a 4 blade but that high five rarely lost contact with the water. that was the best couple hundred bucks i've ever spent. are you running an aluminum prop? or stainless? and corm is right. your boat has a pad in it. try to do that in our lund pro-v and it does the same thing as you experience. but i only trim it way up if i want to haul a%$.
 
jzdb-boats

jzdb-boats

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Joined
Jun 14, 2009
Messages
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Re: help with over rev???

i am running a aluminum prop 3 blade factory job on a 2007 50hp merc. is there a good prop for this because i have been considering changing mine but havnt had the time to research them yet....any ideas? would the quicksilver high 5 work for me???

Thanks for all the imput
 
corm

corm

Lieutenant Junior Grade
Joined
May 12, 2000
Messages
1,241
Re: help with over rev???

Hi,

They do not make a High 5 for the 50 hp.
I feel it is not cost effective to put expensive props on
smaller HP engines. If you upgrage to the 75HP then you could think about
a different style prop. IMO.
 
jzdb-boats

jzdb-boats

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Joined
Jun 14, 2009
Messages
11
Re: help with over rev???

i was considering a 75 hp upgrade and seen a 2005 e tec was offered $2000 for my motor on trade and still had to come up with $4000 out of pocket...wasnt sure if this was a decent deal or not....was told there is still3 years left on warrenty...was also told the 75 on my boat could be a bit scary...it is rated at max 75 hp.....what do you think????,,,,anyone
 
jzdb-boats

jzdb-boats

Cadet
Joined
Jun 14, 2009
Messages
11
Re: help with over rev???

yep...thats my boat...mine is even blue like the pic...lol..the guy selling the motor said i may scare my family...lol...i feel i wont and i would be very relaxed with this motor,,,,dont get why he said it....he said i may be pushin 50 mph with it...but i would like a 4 stroke
 
corm

corm

Lieutenant Junior Grade
Joined
May 12, 2000
Messages
1,241
Re: help with over rev???

Hi,

It would be fun. You don't have to run it WOT.
 
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