Craig Lescombe
Member
- May 15, 2019
- 51
- Boat Info
- 1990 350 Express Cruiser
- Engines
- 454 CID / 7.4 Liter Twins
Twin 454 / 7.4 liter engines. Looking to purchase. Survey other than mechanical - passed with flying colours. Sea trial - ran like a charm - 28 mph @ 3200 rpm - both engine perfectly synchroed. Both temp guages @ 165. Ran strong, no missing, no issues. Had my tech perform a compression test - 4 cylinders on each engine - 90 PSI across the board - 800 hours on the engines - my concern was with his procedure - engines were not at normal operating temp - we were under time crunch - sun was going down - not properly warmed up - did one cylinder at a time with all plugs in other than the cylinder being tested - tested with the engine running versus short cranking intervals , meaning ignition wire not removed from coil / distributor - thoughts?
Either his testing was flawed or both engines are uniformly worn / worn out.
Thoughts?
Thank You!
Either his testing was flawed or both engines are uniformly worn / worn out.
Thoughts?
Thank You!