Motor starts fines and runs smooth. After couple miles cruising or 20 minutes putting around the motor develops a surging starting around 5000rpm. Onlty when warm. Carbs were rebuilt last september, fresh fuel with treatments.
It will go hard until 5000-5300 rpm then lose power, rpm drop to...
This is for a friend of mine. He is looking to get a SS prop, possibly a jack plate he wants best performance that he can get.
Alumacraft competitor 175 tiller 70hp yamaha 2.33 gear ratio
GPS speed two guys light gear 34.5
6400 rpm WOT (6300 recommend)
13.375 dia prop 14 pitch AL
I did the...
I am looking at hooking up a friends 9.9 evinrude 1994 to his side console boat. He live about an hour away from me, and asked if I could help him as he was having an issue. I figured it would be a slam dunk, but I asked him to send me pics because I thought it was pretty strait forward how...
I am looking at hooking up a friends 9.9 evinrude 1994 to his side console boat. He live about an hour away from me, and asked if I could help him as he was having an issue. I figured it would be a slam dunk, but I asked him to send me pics because I thought it was pretty strait forward how...
This weekend my friend had me ride in his boat to see if an improvement could be done to his rig. So here is his set up 18' Lund fisherman, with a merc 125hp, boat and motor are both 2002 model year.
WOT 4800rpm
Max WOT 5250RPM
Top speed 36mph
Prop merc black max 21P
gear ratio? I couldn't...
Does any one know if there is a factory pipe plug already taped in the engine block to install a water pressure gauge? If so where is it located, I have looked but I got a feeling if its there its hiding in plain site?
my motor is a 1996 115 Johnson faststrike, 60 degree v4.
If drilling and...
Any one running a jack plate? If you installed it what differences did you see before and after. Do you feel it was worth it? Any recommendations on set back, or is the vertical lift the biggest contributor to performance increase?
Its winter, I got time to think and that gets me into...
Quick back ground info, I got my 115 faststrike in july of 2013, It ran well, compression good, idle was good. I ran 30 gallons of gas through it that summer-fall. But something didn't seem right even through it ran well and did well on my boat.
So I thought I would do a carb rebuild and...
Its winter, and I have time before the water becomes liquid again. I have plans on rebuilding the carbs on my faststrike 115 and found CCMS reeds. I thought since I would be wrenching on the motor, would it be worth it to put in a new set of these reeds.
So before I dive in deeper in the motor...
I have a 1996 faststrike 115 (60 degree v4) , I just repowered with it. When I got it, it has a weak pee stream. So I changed the impeller, not much of a difference. So I change the whole housing and plates, gaskets... not much change.
I had been running it a fair amount and never had an...
I just repowered my ranger to a 115 johnson. Upgrade from 70hp and the 115 maxs out my boat HP
Here are my numbers
42.5mph GPS
5050-5100 rpm WOT
WOT range 4500-5500rpm
alum 14" dia 19" pitch
with 2:1 ratio LU it puts me at 9.3% slip
Slip seems really good considering its an AL prop...
I just repowered to this motor. The tattle stream was good and strong on the ear muffs, got to the lake for a test drive. Fired up the motor and the pee stream was there but kind of weak. got better with some RPMs
So today I got a new impeller, put it in and went back to the lake. Fired up the...
I just picked up a new to me boat. 1994 Ranger 681 with a 1995 johnson 70hp.
WOT 5600 rpm, I cant find the WOT range but my manual says min 5700rpm (dont know why there isnt a max, but there isnt)
GPS speed 33mph with "normal load" the boat will see.
2.42 gears
13.75 dia 17 pitch SS prop...
I bought a mariner 40hp 2 cylinder motor 1990. It comeing without a prop. So I have no numbers at all, starting fresh.
It is going on a 14.5 foot aluminum side console boat, weighing about 1000-1200lbs loaded (thats a guess). The 25hp on it now pushes it 21-22mph with an 11 pitch four blade...
I bought a 1990 mariner 40hp 2cylinder two carb, it has not yet arrived. The motor is coming with out a prop, so before the motor gets here I was hoping to get a prop to minimize the wait to get the package together.
For those who know or have this motor what is the gear ratio?
Also what is the...
