|
| Author |
Message |
    
SandyChreptyk
| | Posted on Saturday, January 04, 2003 - 02:38 am: | 
|
any help on these Force engines would be great. Looking for info on compression, trying to buy a boat with 120 force and not sure what compression should be or what to look for prior to buying. We took boat out and sounded great but want to get inspection on motor. What should we be careful of???
Thanks in advance for your feedback
Sandy |
Tonyob (Tonyob)
| | Posted on Saturday, January 04, 2003 - 11:05 am: |
|
Sandy,
The 120 hp Force engines were basically the same, but not identical. There were several igniton systems used; all very expensive now.
Compression should be even in all cylinders, and somewhere in the 110-120 psi. range.
Some of these engines have a tendency to overheat due to a pressure relief valve at the bottom of the water jacket on the port side of the block, just below the exhaust manifold. Engines up to about 1988 had these valves, which were done away with in later models, because of frequent problems with sticking and encrustation. This resulted in a tendency to run hot at high rpms. If the cover plate on the exhaust gets hot when running, you may have this problem. Removing the valve can be tricky if it is badly corroded.
You should be aware that these engines are no longer being produced, so that parts are becoming more expensive every year, and more difficult to find.
When you first turn the key to the on position, the overheat warning horn should sound. This tells you that it is functioning. If this alarm does not seem to be working, it was probably disconnected to keep it from sounding. That would be a bad sign. If the alarm is working, and you run at full throttle for about five minutes, and the alarm does not sound, the cooling system is probably okay.
Examine the spark plugs after running for a while. Look for any unusual deposits there.
 |
Rick
| | Posted on Saturday, January 04, 2003 - 10:16 pm: |
|
If purchasing from a dealer, get assurance that the charging system is working properly. If the charging system is original and something fails, the repair may involve a stator/voltage regulator update kit which is very expensive. Also look at PT/T if so equipted. They were only marginal when new, and again expensive to repair. Good luck.
Rick |
john
| | Posted on Sunday, January 05, 2003 - 05:09 pm: |
|
I own a 1884 force 125 that I had rebuilt about 6 years ago. It is a great running engine. However, due to the fact that parts are now very difficult to get...I would suggest staying away. CD ignition units are out of sight to replace..if you can even find them. I still am using my force 125, however promised myself that if anything that involves even moderate $ for replacement occurs...time for a new engine. |
john
| | Posted on Sunday, January 05, 2003 - 05:10 pm: |
|
I own a 1984 force 125 that I had rebuilt about 6 years ago. It is a great running engine. However, due to the fact that parts are now very difficult to get...I would suggest staying away. CD ignition units are out of sight to replace..if you can even find them. I still am using my force 125, however promised myself that if anything that involves even moderate $ for replacement occurs...time for a new engine. |
Tonyob (Tonyob)
| | Posted on Monday, January 06, 2003 - 10:42 am: |
|
To all,
If you own a Force, it is a good idea to look for a blown engine that you can scavenge parts from (especially electrical components). That is the only way to beat the rising cost for these parts. Generally you will have to buy rebuilt stators and trigger coils (which cost about the same as new) anyway. I have had some trouble with the fit of rebuilt units. Even I don't believe some of the things I did to make them work.
These ignition systems are extremely fragile. Any mistakes can lead to disaster when troubleshooting.
Tony |
|
|
|
Product Categories |
| Engine Parts · By Brand |
| Engine Manuals · By Brand |
| Books |
| General Repair and Maint. |
| Care and Repair |
| · Adhesive and Sealants |
| · Bottom Cleaners |
| · Cleaners Wax and Polish |
| · Mops Brushes and Sponges |
| Covers and Tops |
| · Bimini Tops · Hardware |
| · Cover Accessories |
| · Motor Covers |
| · Universal Boat Covers |
| Electronics |
| · Gauges and Compasses |
| · Mounts and Accessories |
| Electrical |
| · Batteries & Chargers |
| · Battery Accessories |
| · Dockside Electrical |
| · Electrical Terminals |
| · Electrical Wire, Cable |
| · Fuses, Fuse Holders |
| · Switches |
| · Wire Ties, Clips, Tape |
| Fuel Systems |
| · Fuel Tanks |
| · Fittings, Fills, Vents |
| · Hose & Primer Bulbs |
| · Filters, Senders, Caps |
| Hardware |
| · Deck Cabin Hardware |
| · Molding and Rub Rails |
| · Rails and Fittings |
| · Snaps Shackles and Hooks |
| · Windshield Hardware |
| Lighting |
| · Cabin Lights · Light Bulbs |
| · Navigation Light Parts |
| · Navigation Lights |
| · Spotlights · Parts |
| Mooring and Dock |
| · Boat Fenders · Boat Hooks |
| · Buoys and Markers |
| · Deck Cleats · Dock Edging |
| · Dock Parts and De-Icers |
| · Fender Covers and Holders |
| · Keelshield / Toon-Tectors |
| · Ladders and Platforms |
| Prop / Trim /
Transom |
| · Jack Plates, Wedges |
| · Mounting Brackets |
| · Outboard Stands |
| · Trim Tabs, Stablizers |
| · Prop Nuts, Locks, Pins |
| · Propellers · Wrenches |
| Pumps |
| · Aerator Pumps |
| · Bilge Pumps |
| · Drain Plugs and Tubes |
| · Hose · Through Hull Fittings |
| Rope and Cordage |
| · Anchor Line · Dock Line |
| · Fender Line · Bulk Rope |
| · Shock Cord and Bungee |
| Safety Products |
| · Horns Bells and Whistles |
| · Mirrors |
| · Vents Blowers and Hose |
| Sanitation |
| · Fresh Water Pumps |
| · Marine Toilets |
| · Sanitation Chemicals |
| · Sanitation Pumps/Hose |
| · Water/Waste System Parts |
| Seating |
| · Deck Chairs and Tables |
| · Fishing Seats |
| · Lounge Seats |
| · Pontoon Furniture |
| · Seat Bases and Pedestals |
| Steering / Control |
| · Control
Boxes |
| · Control
Cables |
| · Hydraulic
Steering |
| · Mechanical
Steering |
| · Rigging · Steering
Wheels |
| Tools / Shop Supplies |
| · Lubricants & Additives |
| · Motor Flushers |
| · Tools & Test Equipment |
| Trailering |
| · Boat Guides/Motor Support |
| · Hitches Balls Couplers |
| · Rollers Brackets Springs |
| · Tires Wheels and Carriers |
| · Trailer Hubs & Bearings |
| · Trailer Jacks |
| · Trailer Wiring and Lighting |
| · Winches Straps Tie Downs |
| Manufacturer List |
|
