1976 Starcraft Mariner 21' Layout Changes? (v2)

[alldodge]

Is it you can only reach 4000 rpm then it would be over propped which would lug the motor. If your just cruising at 4000 then this would not be an issue. I hardly ever go above 4000 and can go as high as 6000

 

[jonnyfish]

Is it you can only reach 4000 rpm then it would be over propped which would lug the motor. If your just cruising at 4000 then this would not be an issue. I hardly ever go above 4000 and can go as high as 6000

Oh, I could go above 4000, but that's when it ran rough, so i usually cruised between 4000-4500. So to your point it could have simply had the wrong prop.

However, all that aside, the motor is toast, a rebuild quote at 4-5k on a motor that's worth 1.5k on a good day just doesn't appeal to me. Match that with the gas guzzling nature of an old 2 stroke and a carbed motor and I'm out, haha. Truthfully I'd been contemplating it before the piston ring blew.

 

[redneck joe]

didnt catch this before. why are you lugging the motor. let that thing sing.

I run my little 50 about 4200, gets me to about 20 mph which atm is all i want/need.

 

[roscoe]

ive thought of moving stuff as well, but keeping the center console. The 21 had the console well forward relative to the the 18 per brochure Definitely battery up front and a belly tank.


What hp you running?

Its a 1981 18', with the small 11" splash well, like yours.
Hp ???
Well, that's part of my problem.
Got a lot of weight back there.

A 1986 115 hp inline 6, 315#
and a 1990 15 hp kicker, 75#
and 2 batteries. 80#

 

[roscoe]

 

[jonnyfish]

It was a long delay but the project is finally underway. All decking and old flotation has been stripped out. Running PVC for under deck wire ports and then pouring foam into bags for the under deck. from there i'll start building the main deck flooring and then begin fabricating the splashwell + rear casting deck structure.

If photo uploads work later i'll add them.

 

[redneck joe]

I did the pvc chase as well on my mr180. I would to foam boards over stuff in a bag. If you upload pics to fa ebook or impurities or si ilar you an do old school hot link on pics to here.

Welcome back and good luck.