Hydrostream, when you run you runnnnn

[dompie99]

Hi all,<br /><br />Her's the story,<br /><br />I recently purchased a used Hydrostream Vision 17' with a Jackplate, and all the necessary gauges (speedometer, RPM, heat, water temp and pressure) that need restoration ( winter project)<br /><br />The engine is a 135HP Mercury Mariner 2L 1993.<br />According to my findings, the motor was submerged in water and was not taken care on right away after beeing removed from water. <br /><br />I dosmanteled the whole powerhead and discovered a few bad stuff like seezed center bearings, and two pistons that were scored from lack of lube. Carbs were full of fresh water »( bewark) but not attacked by any corrosion fortunately.<br /><br />I intend to rebuild this engine at the best of it's performance wich i've already done a while ago while racins at Valleyfield some years behind.<br /><br />My few questions are popping into my mind 'cauze i've been into the modificationof almost every thing i»'ve got to their limit and their furthest speed and performance that they could.<br /><br />I've read on this engine that it use the same block and pistons ***'y from 135 to 175 HP, without the fact that the ports are relocated ( read diferent timing and size) carbs are bigger and exhaust tube is a bit shorter.<br /><br />Does anyone know's (i donna want to read AGAIN the Jenning Two strokes Manual theories) where to look for and what to '' trim'' in order to get the most without gooing overboard on the port section ???<br /><br />I have the facilities to port and polish the intake/exhaust ports, rework the heads (CC's) get dual sparkplugs heads at a certain extend, change carburation to fit the new specs and the new porting.<br /><br />I never rode the boat on any water plant YET but i intend to rock the alley with a Chopper 28'' prop, a dual steering and solid mounts. This lower case ***'y has a water pick up at he best location ever, in the lower portion of the nose-cone.<br /><br />What are the ODD's that this beast will cross the 175HO mark and the 80 milles per hour limit cause' that's my goal.<br /><br />Jacko

 

[Kenny Bush]

Re: Hydrostream, when you run you runnnnn

You could probably get there with a bunch of work and money. It would be way cheaper to get a 200EFI (more RPM's) in a stock format. Doing this would save hundreds of hours in maintenance time.. I see those Hydrosteams down here, with 250's on them (Scary).... I am kind of a speed freek myself, but I have migrated to using "Factory" motors....those babies were tested for thousands of hours, and had more engineers working the problems & designs than you and I. Are you related to my neighbor, he is putting a Turbo on VW dunebuggy motor..Trying to get 200 hp..... I showed him a Porsche 911 motor that would bolt right in and give him 225 hp, but he said "no way", I am going to spend 3 times as much and hope for 200.... Americans (Texans) ....gotta love'm.....

 

[dompie99]

Re: Hydrostream, when you run you runnnnn

Hi,<br /><br />Thanks for the reply, <br />I won't use the same line as '' your neighbor, no way '' ( laugh )<br /><br />I know it will be a couple of hours but the cost of time compared to cost of the 200 EFI is not in the same price range. Second, i do believe i have the time for it.<br /><br />I will probably get a 200 HP remanufactured wich will be cheaper in a sense, like it will be ready and bolt-on type. I agree. But the fun of putting it together is also a reward, ( i do believe that you understand this side of US )<br /><br />THanks a whole lot, much apreciated.<br /><br />Jacko

 

[Kenny Bush]

Re: Hydrostream, when you run you runnnnn

I understand my friend...... I too have some toys that are nothing BUT a labor of love. If you do get there, you will come in 50 pounds lighter in the 4 cylinder versus 6.

 

[dompie99]

Re: Hydrostream, when you run you runnnnn

?????????????????????????????????<br /><br />Sorry, i didn't get that one <br /><br /><br />We, at a certaiin age, love to spend time away from the wife « a loud slap in the back of my head »»<br />no kidding, i hate ready done things me too.<br /><br />But seriously, what are the expectations if we look at a straight 150hp, with a hydrostream Vision 17', a jackplate with a setback of 10'' minimum, jacked-up about 6'' and a chopper prop. 28'' ??<br /><br />according to the software, i should be having a 79 miles an hour with 19% slip.

 

[Kenny Bush]

Re: Hydrostream, when you run you runnnnn

It is definately "Do'able". The key factor will be the max RPM's. Of course at that speed, there will only be 2 inches of hull in the water. With all the aftermarket stuff out there, you should be able to wind that motor up to 6500-7000 R's easy....throw that into your calculation...

 

[Kenny Bush]

Re: Hydrostream, when you run you runnnnn

It is definately "Do'able". The key factor will be the max RPM's. Of course at that speed, there will only be 2 inches of hull in the water. With all the aftermarket stuff out there, you should be able to wind that motor up to 6500-7000 R's easy....throw that into your calculation...

 

[dompie99]

Re: Hydrostream, when you run you runnnnn

what ??<br /><br />6500 to 7000 rpm ????<br /><br />aint there a limit to the max rpm even though i will pour some oil IN the gas tank ANYWAY, in case this monster decide to lean the oil somewhere in the process.I will pay all the attention to this babe you could be sure of it. my set of micrometer will be put to use again ( that will remind me the years of racing Boats, motorcycles and cars in the 70's and 80's where i got so many ticket ( traffic violations ) to prove it. Fortunately, on the water, there aint no such $$$ aspiration.<br /><br />Jacko

 

[Kenny Bush]

Re: Hydrostream, when you run you runnnnn

Stay up there.... The Water Police are growing at a record pace down here. We get tickets for exceeding our Hull ratings.

 

[Dhadley]

Re: Hydrostream, when you run you runnnnn

80 with even a stock 150 on that boat is very doable. If you havent driven one before just get it going and start slow. Be patient. Streams are one of the easiest and most forgiving pad bottom boats to drive. But you can still scare youreself.<br /><br />If you are not familiar with pad bottom boats over 60 mph I would suggest that you start with the motor you have and learn the "feel".<br /><br />The first thing thats going to happen is that youll probably have a lot of torque in the wheel. Youll have to pay close attention to gearcase shape to get it out. Dont let anyone talk you into hydraulic steering. Youll want the feel of the dual cable steering. And not the "No feedback" kind.

 

[dompie99]

Re: Hydrostream, when you run you runnnnn

Thanks a whole lot, for the answer...(s)<br /><br />I found out that the lower ***'y will need attention TOO ( crap)<br /><br />It it standard to have the water pick-up at the under side of the front tip of the gearcase on these engine or it's an aftermarket stuff....<br />Three holes arepresent under the tip of the gearcase...wich is great, i will be able to raise it almost at will.<br /><br />One thing though, Bushcat mentionned that a rev of 6500 to 7000 is '' doable'' ?? i'm willing to go that route but any special care to be taken before crossing that path ?? Oil, carburation, or a rev limiter ?? just in case..( laugh )