1990 L Drive 120hp.
Cylinder #1 at TDC. Single hash mark on flywheel lines up with hash mark on the motor. Woohoo!
Now on to timing.... I removed the throttle cable and checked it:
-At idle the single hash mark on the flywheel lines up with the hash mark on the motor. Is this correct...
My tach is pegged at 6k with the motor off. With the motor running it fluctuates between 5k and 6k.
I'm pretty certain the tach is bad. I tested the rectified per the manual and it checked out. Does anyone what pole it is and a good place to buy a replacement?
thanks!
So I finally got around to finishing my 120 L-Drive build (new crank, pistons...the works). I button her up and press the magic button and she fires to life. YES!!!!! And then begins to scream at high RPM's like there's no tomorrow.
Turn the key off, nothing. Pull the wire from plug 1...
This is for a 90' 120 L-Drive....
I got 2 holes for the head than need to be helicoiled. One is an outer hole that empties into the exhaust area, so no issues with cleaning debris or getting shavings into the motor. The other hole is an inner hole and I'm unsure where it empties into. Can...
I've got a freshly bored block, fresh crank, new pistons, new bearings and gaskets but my rods have some light pitting on the big end. Where... oh where can I get new rods? Or can I let it slide? How will the pitting affect the new roller bearings over time?
Lastly, my bearing cages appear...
I recently purchased a crank to use for the rebuild of my 1990 120hp L-Drive. How do I determine that this crank truly was built for the L-Drive motor and not the standard outboard? Anyone know the stroke of each?
Also, can anyone advise if aftermarket cranks were ever available for Force...
If anyone happens to have 4 extras for sale or can point me in the direction of a reputable dealer I would appreciate it.
Also, what is the consensus regarding comparable brands? I see that iboats sells Sierra brand, which I've never heard of before. Is that a quality piston or something to...
Last time out I noticed a pretty bad vibration when I raised the outdrive after getting the boat on plane. It was certainly not part of normal operation.
Does anyone have any input as to what the culprit might be? I've got the motor out of the boat and would like to remedy this before...
I finally got around to tearing the motor down and all 4 cylinders are toast as are the crank journals for rods #1 and #2. They're galled and either need to be ground or I need a new crank. Does anyone know if it can be ground and if I can get oversize bearing pins? Or where I can get a new...
1990 120hp L-Drive
A few months back I was on the river. I just got the boat on plane and then 5 seconds later it lost power. The boat would run, but only at 1/3 - 1/2 power. I limped it back to the dock, took it home and let it sit until now.
I started simple with a compression check...
1990 120hp L drive
I tested my two AC leads and neither registered anything on the OHM scale (should read 0.5 - 1.0) and the ground test failed too. I'm sure its shot, but is there any visual indications that would confirm it? I hate to drop the cash for a new stator only to find I made an...
Hello.
I think I've found my issue.... cylinders #1 & #4 (top and bottom cylinders) are getting a very weak spark. Since #2 & #3 are getting a nice blue arc I'm doubting its the magneto. I've got a 90' 120 L Drive with the Prestolite ignition and I noticed there's 2 CD modules.... does one...
This a 1990 120 L-Drive Force.
Not knowing this was an unregulated style power system I removed the battery cables from the running motor. Known fatalities are my stereo and apparently my power guage on the dash. The head unit went up in smoke and the volts now read at 16+ (with the key on...
