Hy,
I have a boat that i am restoring for about 3 years now, and because my old mercruiser engine was beyond repair, i bought a new (well, when i say new i mean new for me, but older then me ) volvo penta with transmission. I figured out, based on forum posts that my engine is a AQ130C, that should have around 130ps (the old mercruiser had the same).
Now, i know that my transmission is a 250, but i have no idea if it's 250a,b,c ... and can't find how to figure that out.
My boat is a 1989 Regal Medallion 185, 18ft bow rider that is pretty heavy.
And now the problem, the boat just won't plane. I had the engine a full service, and now have excellent compression on all pistons, and the engine runs excellent, but still, the boat just does not plane.
Did some water tests the other day, and with just me in the boat i can go about 21mph, with 2 i can go about 18-19, and with 3 16-17mph. p.s. my tacho is broken, so no idea what RPM...
So, i figured that because the engine + transmission + propeller used to be an a slightly smaller boat i probably have to change the propeller. It took me 4 days and some bent metal to get the old one out until i found an older forum post that sad to use some penetrating oil.. so that did the trick and now i know i have a 14 / 18 propeller.
Where i live, boating is not that popular (we only have a few lakes) and have no shops around that have propellers in stock (btw, my propeller spins counter-clockwise) so i can't test out what to put in, and shipping costs me more then the propeller if i want to return it.
Soooo, after all this long story we can say that i am in a little pickle , and i do need your help.
a. how can i figure out what ratio my trans has?
b. what propeller should i put in? I don't care for speed that much, the lake only has about 10miles, so getting somewhere fast is no issue :rolleyes: but i do want to be able to plane wit 4-5 people on board, and maybe from time to time tow a tube or something.
Any suggestions are more then welcomed !!
Thanks
I have a boat that i am restoring for about 3 years now, and because my old mercruiser engine was beyond repair, i bought a new (well, when i say new i mean new for me, but older then me ) volvo penta with transmission. I figured out, based on forum posts that my engine is a AQ130C, that should have around 130ps (the old mercruiser had the same).
Now, i know that my transmission is a 250, but i have no idea if it's 250a,b,c ... and can't find how to figure that out.
My boat is a 1989 Regal Medallion 185, 18ft bow rider that is pretty heavy.
And now the problem, the boat just won't plane. I had the engine a full service, and now have excellent compression on all pistons, and the engine runs excellent, but still, the boat just does not plane.
Did some water tests the other day, and with just me in the boat i can go about 21mph, with 2 i can go about 18-19, and with 3 16-17mph. p.s. my tacho is broken, so no idea what RPM...
So, i figured that because the engine + transmission + propeller used to be an a slightly smaller boat i probably have to change the propeller. It took me 4 days and some bent metal to get the old one out until i found an older forum post that sad to use some penetrating oil.. so that did the trick and now i know i have a 14 / 18 propeller.
Where i live, boating is not that popular (we only have a few lakes) and have no shops around that have propellers in stock (btw, my propeller spins counter-clockwise) so i can't test out what to put in, and shipping costs me more then the propeller if i want to return it.
Soooo, after all this long story we can say that i am in a little pickle , and i do need your help.
a. how can i figure out what ratio my trans has?
b. what propeller should i put in? I don't care for speed that much, the lake only has about 10miles, so getting somewhere fast is no issue :rolleyes: but i do want to be able to plane wit 4-5 people on board, and maybe from time to time tow a tube or something.
Any suggestions are more then welcomed !!
Thanks