Help ID Mercury black max?

[Mhall222]

I just picked up a 1988 Starcraft Salker 19ft which came with what I was told was a 200 black max. After doing a compression test i came in to check the serial and as I suspected the engine may not be a 200 at all. The mid section serial is for a 1982 XR2 150hp but, it looks like the power head my be something else. I have not been able to find out what I have so I figure I would post some pictures here in hopes someone would be able to assist.

[vnemous]

In picture number 3 you can see the welch plug it has a big "W" and a number. that is probably the serial number, post that

[Mhall222]

C126102 on the Welch plug so it is in fact a 200hp engine but what year?

[FUJIMO]

[FUJIMO]

[FUJIMO]

[FUJIMO]

[FUJIMO]

[FUJIMO]

[FUJIMO]

[vnemous]

1988 200 xl 2.4

[Mhall222]

Would that be a blackmax or just a standard 200hp? I guess there may not be any difference. I have run the motor a little and did another compression test which resulted in just maybe a touch higher readings but still right at 120psi on all 6 cylinders. I need to figure out if i want to put the oil injection back on (it was missing) or just run premix. What would you suggest?

[vnemous]

pre mix much safer on that motor