low944
New Member
- Sep 2, 2018
- 4
- Boat Info
- 2001 340 Sundancer
- Engines
- 7.4 Horizon
Hello all,
I am in the process of buying an 01 340 with 7.4 Horizon 380hp engines. I got a compression test done today and below are the results. They seem kinda high to me and the one cylinder that is lower than the rest (150) is concerning me. This boat has done a lot of sitting in the last few years. It has always been in fresh water in the upper Potomac. We did a sea trial on it a week ago and the compression test was done today. Not sure if it was done after running it or cold. On the sea trial the starboard motor only got up to 4400 and the port got up to 4800 at WOT. Both motors have 375 hrs. They also have the hybrid exhaust and look to have the baffle / resonator in all 4 exhausts. What do you guys think? ...
cylinder - psi
starboard
1 - 160
2 - 170
3 - 160
4 - 150
5 - 160
6 - 170
7 - 170
8 - 175
port
1 - 175
2 - 160
3 - 175
4 - 165
5 - 160
6 - 160
7 - 165
8 - 175
I am in the process of buying an 01 340 with 7.4 Horizon 380hp engines. I got a compression test done today and below are the results. They seem kinda high to me and the one cylinder that is lower than the rest (150) is concerning me. This boat has done a lot of sitting in the last few years. It has always been in fresh water in the upper Potomac. We did a sea trial on it a week ago and the compression test was done today. Not sure if it was done after running it or cold. On the sea trial the starboard motor only got up to 4400 and the port got up to 4800 at WOT. Both motors have 375 hrs. They also have the hybrid exhaust and look to have the baffle / resonator in all 4 exhausts. What do you guys think? ...
cylinder - psi
starboard
1 - 160
2 - 170
3 - 160
4 - 150
5 - 160
6 - 170
7 - 170
8 - 175
port
1 - 175
2 - 160
3 - 175
4 - 165
5 - 160
6 - 160
7 - 165
8 - 175