135 black max on 20 seafari?

toppintom · #1 05-12-2006, 05:51 PM

wondering if anyone has run a similar set up. I came across a clean engine for under a grand I'd like to put on my seafari.

toppintom · #2 05-13-2006, 11:40 AM

anyone ever run one of these engines. it's a v-6. looks quite abit lighter than my johnson 150. I may be making a deal this weekend. does anyone know what the compresion should be

Bigshrimpin · #3 05-13-2006, 09:30 PM

Tommy - I recently tore down a Merc 150 xr2. The XR2 is also a 2.0L merc . . . The compression in the good cylinders were b/w 115 and 120psi. The old two stroke mercs are great motors. The one weak point is the oil injection. If it's not already off . . . yank it off. You can find tons of information on the forums www.screamandfly.com or iboats.net. Good Luck!!

eggsuckindog · #4 05-15-2006, 03:24 PM

With the cabin its a bit heavy and 150 to 175 would be better, but I have heard nothing bad about the motors so thats not the problem.

toppintom · #5 05-15-2006, 04:26 PM

It's the original transom, don't want to press my luck witha big engine

gatorbait · #6 05-27-2006, 10:57 AM

I have a 77 Seafari with a rebuilt 96 mercuryt 115. With the reabuild I'd say it's about at 125, and it's works just fine. Max speed is 34 MPH and I have no problem getting on plane with three grown men, tackle, bait, and beer. I save GAS too!!!!!!! As long as your not a speed deamon it would be a fine fit. Remember the seafari is only 1800 dry (no motor). I have a dream to fit my seafari with two flats jacks and twin 90 HP Optimax. One day and $16,000 later.