uncaer9
27.04.2021 14:49:11
Re: 1989 Force 125hp outboard compression test
See full version: 1989 Force 125hp outboard compression test
Re: 1989 Force 125hp outboard compression test
On a 4 cylinder engine like the 125 the chances that all four cylinders would fail at the same time and by the same amount is not worth calculating. If they are equal (+/-10%) I call it a good engine.
My Force 125 89. has 120-130 psi in all cylinders. But I am thinking about decarbonising motor, maybe I could get more compression more
I fail to understand how an inflatable could impart more stress on the pull than a wakeboarder landing and digging in, or a slolom skier. I am using heavy wall 2" tubing for the pole with 1 1/2" struts, braced to the transom with the pole socketed to the deck, and pinned. [links]
I'll personally get on the tube and see what it does, be the guinea pig. [links]
Re: Getting the rope out of the water--Skiing and Tubes more
I can't do a pylon setup because it's an I/O and I'd rather not mess with the supports and straps which would block the rear seats. I've seen a few setups that mount to the transom and I've attached pictures of the one I'm looking at. I'm wondering if this one, with a proper backing plate mounted to the inside of the transom, would be enough to pull a tube. If not, is there any other way to get the rope out of the water?
On my ski boat, we have a pylon that is behind the rear seat, and projects up through the splashwell. It's solidly bolted to a reinforced pad on the keel of the boat, and has 2 braces that go to the rear corners of the boat and connect near the top of the pylon. I think it's way stronger than the aftermarket ones that bolt/screw to the floor of the boat. Also if mine does fail, no one will be sitting behind it. I realize that with an I/O you don't have that mounting option. but don't underestimate the force a tube can exert. If it flips over on a whip, it can catch the water and put a big pull on. Way bigger than a strong slalom skier. [links]
But I'm pretty sold that Force is a decent engine and has decent torque - just no top end - my Dad has had one for nearly 20 years now and only had one issue in all that time (and it was an easy fix) Yeah - not that power the Merc had and I agree that a Merc 90 would shame a force 125 - but still a good engine for skiing if propped right. Both me and my dad are around 220 lbs and can get up behind one on slalom. The one main plus is how easy they are to work on! Gotta be the easiest outboard out there to work on.
many wont like what ive wrote but its true, these engines are not the power they are supposed to be.
they look nice and some have even been known to be reliable if kept well maintained and nursed.
treat the 125 as a 80 to 90hp and youl get what you want from it, expect it to perform like other 125's and you will
always be chasing a dream.
aks anyone who has done dyno tests on force 125 what the average hp was, I bet you will never here of 100 plus. [links]
I have a Force 125 engine and am thinking of going 4 blade next year - I think I have found a prop that will work but I'm pretty sure the anode will hit the webs in the prop. So I'm thinking of just taking it off - will that hurt anything to just not have it ?
My boat only has the anode behind the prop - it's just bolted on there (see pic at top post) - I'll probably just take it off for testing. maybe trim if i want to leave it on - it's the original for 28 years and still looks new. I think you guys answered that question and I appreciate it. I put at least 100 hours of water time on the boat in the last 2 years and it hasn't changed look. My "trim tab" is the exhaust snout - different than what you would see on a mercury and it isn't in the way of the prop. here
when people talk of a force engine getting a 19ft boat up on plane in 4 seconds they obviously count very slow.
ive seen brand new ones of these on brand spanking new hulls, they are dreadfully low on power compared to the other
major outboard brands.
this is one of the reason why force engines were doomed and the company went bust.
too many people wanting high performance from a low budget engine that was meant more for leisurly cruise rather
than a all out high speed sports boat. [links]
I only run fresh water lakes and trailer after each use.
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