brianq
Petty Officer 2nd Class
- Joined
- Jul 15, 2012
- Messages
- 145
At the advice of Jerry I am starting a new thread which will cover the rebuild of my 1992 70 Hp force.
Background:
It would not start found it had low compression in two cylinders, I replaced the head gasket which was damaged but it didn't help, so I decided to take it apart and find out why. I took it all apart and found two pistons have cracked ring lands. Last week I took the block to a local Machine shop to have the cylinders honed. I hope to pick it up this week. I haven't ordered pistons and rings yet because there were several different sizes so I hope the machinist will tell me which to order. Last summer I replaced the floor and foam in this boat so I already have a good amount of money into this boat. I took a lot of pictures and made notes so I am eager to start the rebuild. Anyone can take bolts out it will be putting everything back together that should be the real challenge.
Me:
I am a civil engineer and I have a construction business on the side. I am very handy but I know NOTHING about motors. I have already learned a TON from this site and look forward to learning even more. I found a few youtube videos and I have the Seloc book for this motor. Please bare with my tons of questions and not always using the correct technical terms.
Goals:
Repair the motor, paint the hull and add a depth finder and switch panel. Time permitting I would like to replace the upholstery.
It was terrible not having a boat all summer, I am dying to get back on the water.
Here is a link to my diagnosis efforts:
http://forums.iboats.com/forum/engi...rds/10229274-1992-force-70hp-wont-start/page3
Background:
It would not start found it had low compression in two cylinders, I replaced the head gasket which was damaged but it didn't help, so I decided to take it apart and find out why. I took it all apart and found two pistons have cracked ring lands. Last week I took the block to a local Machine shop to have the cylinders honed. I hope to pick it up this week. I haven't ordered pistons and rings yet because there were several different sizes so I hope the machinist will tell me which to order. Last summer I replaced the floor and foam in this boat so I already have a good amount of money into this boat. I took a lot of pictures and made notes so I am eager to start the rebuild. Anyone can take bolts out it will be putting everything back together that should be the real challenge.
Me:
I am a civil engineer and I have a construction business on the side. I am very handy but I know NOTHING about motors. I have already learned a TON from this site and look forward to learning even more. I found a few youtube videos and I have the Seloc book for this motor. Please bare with my tons of questions and not always using the correct technical terms.
Goals:
Repair the motor, paint the hull and add a depth finder and switch panel. Time permitting I would like to replace the upholstery.
It was terrible not having a boat all summer, I am dying to get back on the water.
Here is a link to my diagnosis efforts:
http://forums.iboats.com/forum/engi...rds/10229274-1992-force-70hp-wont-start/page3