Offshoreonly.com - Turning my Merc 850's into 1075's... Any Thoughts??

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Quote:

Originally Posted by maxonmike (Post 3586303)

We see speeds consistently in the high 120's to mid 130's on a good day... I must admit that I need to fly the boat a bit to see the 130+ speeds. Those with Cats know what I am referring to... Trim the boat a little more then you would normally to get the nose light... It does not bother me however sometimes it makes my passengers kinda uncomfortable. I think with the bigger power the boat will actually be more stable as I will not need to drive the boat as loose to get the same speed...

My 36 Nor-Tech feels real nice in the 40s ! Every time i had someone new in the boat they said the boat felt no different from 100 to 140. You can never have enough power! I would love to have 1075s even if you only go full throttle 3% of the time, that 3% is the only part of the ride you remember. On Sundays i would always pin the throttles for about one minute and all week at work all i could think about is that amazing feeling. Once i get in the 30s i actually trim down a little bit and the boat locks in solid. GOOD LUCK BRO!

Shop up the street has a set of the 850 to 1330 Whipple kits done by Mark Boost and is gretting ready to fire the motors soon. I'll repot back to the class on how they run, they sure look good.

Quote:

Originally Posted by RBH (Post 3586169)

Bought a 850 boat that would run 115 to 118 changed it over to a 1075 all mercury parts ECM, Cam, Pulleys. Wouldn't go back we ran 135 at the end of the year.

Quite a speed increase!

Quote:

Originally Posted by Comanche3Six (Post 3593956)

Quite a speed increase!

I had to change the gear setup also, we are running 1.35 now. The boat has a couple of MPH left in it, we just ran out of lake that day. Engines are out of the boat currently to be freshen up, we will give it another shot first of April when we get her back together.

Quote:

Originally Posted by RBH (Post 3594188)

Was 1.50?

RBH what props are you spinning now ?

Quote:

Originally Posted by Comanche3Six (Post 3594205)

Was 1.50?

It was 1.5 when we got it.

Quote:

Originally Posted by 575cat (Post 3594349)

RBH what props are you spinning now ?

At the end of the year we had a set of 17 x 38 5Blades 16 rake Hering .

i have a pair of merc 850's. does making the switch to hydrolic rollers make sense?

Quote:

Originally Posted by dbhammer (Post 3642482)

i have a pair of merc 850's. does making the switch to hydrolic rollers make sense?

I'm curious to this as well since I have not heard any feed back on the conversion on the 1075...

Quote:

Originally Posted by madhatter42 (Post 3642611)

I'm curious to this as well since I have not heard any feed back on the conversion on the 1075...

no reason to run a solid roller at that power level unless you enjoy adjusting valves!!