roger3645
Petty Officer 1st Class
- Joined
- Aug 30, 2005
- Messages
- 271
Hello all! I am currently running a 1985 140 20 inch shaft looper which has low compression on 1 cylinder (around 115 on 3 and 105 on the other). It still runs but is lacking at WOT.
Just replaced the head gaskets and found moderate scuffing on the 105 psi cylinder. I don't if it's normal but I could move all pistons side to side. Also I don't know if this powerhead is good for a rebuild. There was a lot of corrosion of the casting around the cylinder sleeves, which I repaired with JB weld. Water intrusion was the reason I changed the head gaskets. After an hour run time on the lake the JB weld seems to be working.
I have found a 1985 120hp looper, with a 25 inch shaft (salt water motor).
I believe the powerheads are the same.
Questions: Any difference in the splines on the prop shafts?
If I use the 140 hp carbs and throttle bodies on the 120 powerhead will I have a140 hp motor?
Just replaced the head gaskets and found moderate scuffing on the 105 psi cylinder. I don't if it's normal but I could move all pistons side to side. Also I don't know if this powerhead is good for a rebuild. There was a lot of corrosion of the casting around the cylinder sleeves, which I repaired with JB weld. Water intrusion was the reason I changed the head gaskets. After an hour run time on the lake the JB weld seems to be working.
I have found a 1985 120hp looper, with a 25 inch shaft (salt water motor).
I believe the powerheads are the same.
Questions: Any difference in the splines on the prop shafts?
If I use the 140 hp carbs and throttle bodies on the 120 powerhead will I have a140 hp motor?
