muchco
Petty Officer 2nd Class
- Joined
- May 10, 2005
- Messages
- 143
Dhadley back in May I run a thread regarding the compression on my 1987 Evinrude 150XP. I started with 85 psi on each cylinder. I did a decarb job with Seafoam and raised the compression approx. 10 psi on each cylinder. You had asked me to give you the casting numbers of the heads, and you would let me know what you thought. You mentioned that some XP's had aggressive port timing and that certain heads that may give slightly lower compression reading than than other combinations. The head castings are: 332544 and 332545. What do you think?