59ci mercury tuner

[tyst67]

What exactly does cutting the tuner and (adding a bell?) do for your performance on these motors! Hole shot or top end or both? And how do I do it?

[fs5]

mate I just bought a tuner off hydro tech,should be fittin it on the weekend and givin it a run.i'l post how it goes.
I've heard its a bit off a hit and miss cutting your tuner,works for some and not others.
I thought it gives you a bit more topend??

[tyst67]

mate I just bought a tuner off hydro tech,should be fittin it on the weekend and givin it a run.i'l post how it goes.
I've heard its a bit off a hit and miss cutting your tuner,works for some and not others.
I thought it gives you a bit more topend??

Ok that's awesome! Let me know how it works

[fs5]

hi mate ,fitted the tuner and give it a run.i don't have a tach ,but I reckon its given it about 150/200rpm.its a lot more powerful in the topend,feels a bit better down low,but I fitted some reeds as well.
well worth doin in my opinion,my motors a stock 55 same as a 60hp

[Fast Fred]

factory tunas are for a round power curves, bell style pushes the power to the top of the curve for a peaky top end. it does Not make HP, it just tunes the power you have.

[pdt]

my motors a stock 55 same as a 60hp


since when is a stock 55 the same as a 60 ?
I make it 5hp difference, unless its not stock anymore and has been taken to 60hp now ?

[tyst67]

factory tunas are for a round power curves, bell style pushes the power to the top of the curve for a peaky top end. it does Not make HP, it just tunes the power you have.

Ok, so if it adds to top end it probably takes away a little from the bottom end! I have an extra tuner and I am gonna modify it! Do you have any opinion on how I should do it? I would like to find someone on this site that had done it before and send it to them so they can do it for me!

[tyst67]

my motors a stock 55 same as a 60hp


since when is a stock 55 the same as a 60 ?
I make it 5hp difference, unless its not stock anymore and has been taken to 60hp now ?

They are the same! All parts are the same! The carb is the same size Venturi as the 60 except the 55 has smaller jets! I'm not sure if the 55 reed cage is slightly smaller or if it is the same as well

[pdt]

so its not the same then is it.

should of said same as 60 apart from the jets !!!!!!

you might also have restricter plate on or in the exhaust or behind the carbs !!!!!!!

you might also find the seapro has a lot more stainless fittings than a normal motor !!!!!!
like the old mariner v merc from the 80's in uk. mariners had stainless stuff, mercs had steel.

[tyst67]

so its not the same then is it.

should of said same as 60 apart from the jets !!!!!!

you might also have restricter plate on or in the exhaust or behind the carbs !!!!!!!

you might also find the seapro has a lot more stainless fittings than a normal motor !!!!!!
like the old mariner v merc from the 80's in uk. mariners had stainless stuff, mercs had steel.

Yes you are right lol I wasn't fine tooth combing it. I ment they are the same carb same motor! Lol and you are right about stainless steal! Sea pros are stainless steal but again ! "The motors are the same besides material and a few dollar part lol