200 Black Max Low Water Pressure

**Merc 2.5** · 10-29-2019, 03:33 PM

Ya sumbody prob got em used and throwed em in there with crap already on em. prob a ****ty job cleanin old gasket. Look like a hurry up and use rtv so maybe wont leak haha
Also that "get by mota" mite suprise ya. the 2.4 200 good mota. I just sold one and it was strong, hell we got a member here. went from a 2.4 220 to 2.5 promax. and I think he said he gained 2 or 3 mph with same prop and setup. Just food for thought. I like them ole motas. Is urs a virgin chrome ? All 6 still chrome?

**TNRoostertail** · 10-29-2019, 05:36 PM

Brother idk about the cylinders, haven't even looked yet lol. Had good compression so we left her sealed.

**Merc 2.5** · 10-29-2019, 05:48 PM

Just curious as most the 2.4 200 runnin round with steel sleeve, which is perfectly fine. Just thinkin u mite have a original with 6 chrome sleeves. Its aluminum coated with chrome. A magnet wont stick to it. Either way. No need pullin heads to check tho. So did u have to order gaskets?

**TNRoostertail** · 10-29-2019, 06:26 PM

Well they only had the upper gasket, lower will be in tomorrow. Ran all the numbers on everything while we were there. Turns out mid and lower are out of a early 90's 150 with the newer trim setup. The powerhead we believe is a 1984 200, it does have a 2.4 exhaust setup as well and they didnt make a 2.4 150 in 1984. So it's a freankenmota lol. I thought you couldnt bolt a 2.4 to a 150 mid but iirc they went to 2.4 on 150's later on. Idk its confusing lol. Thanks everyone for your help, going to get it buttoned up tomorrow and see where she is. Can anyone think of anything else it could be while we have everything apart? So far : new water pump, new poppet, new stats, will have all new gaskets on mid. And everything has been a kit, so o rings are good to go as well.

**Merc 2.5** · 10-29-2019, 06:43 PM

Did u replace seal in block for poppet? I know it's a bitch to get out

**TNRoostertail** · 10-29-2019, 08:36 PM

Originally Posted by Merc 2.5

Did u replace seal in block for poppet? I know it's a bitch to get out

Yeah, it did suck. It's made of a harder plastic like material with the notched o ring inside it and was in there.

**TNRoostertail** · 10-29-2019, 08:37 PM

Soon as we get this done I'm going to get my lil 2.0 done for my lil boat ;p

**TNRoostertail** · 10-30-2019, 03:34 PM

Ok got out mid and ph gaskets in. Installed all new gaskets, new hardware in places old hardware looked bad and this is the result. Much better tale tale flow, and it's just on the hose. Does this look good to you guys?
https://youtu.be/b6iOKH8mWqE

**Merc 2.5** · 10-30-2019, 03:38 PM

Perfect. Pressure needs b no more than 15lbs wot. also water flow out exhaust relief slowed down to
Ole mota sounds pretty gud

**TNRoostertail** · 10-30-2019, 03:43 PM

Does sound pretty good.

**rochelle howell** · 10-30-2019, 04:43 PM

Excellent thread. Good pics, descriptions, videos. Thank you, gentlemen.

**TNRoostertail** · 10-30-2019, 04:51 PM

Well we took her out, water pressure is real sporadic. It will jump between 5-15 and were getting an alarm pretty quick. When we get the alarm the tale tale is still spitting water good. Any ideas