202 / 250 chine walking (?) badly after lowering motor 1" >>>>HELP!!

[GoBama]

Guys, I had my Merc XB 250 on my 2002 202 Pro V moved up to 1.5" above pad and it was porposing. So I lowered it a full inch and ran it to day. At 5400 rpm it began to sway back and forth badly almost out of control. I had plenty of throttle and trim left to go but couldn't get past that point before I began to lose it. This is chine walking right? What do I do about it? Pick it back up some? It was running fine at wot (6100 rpm) except for the up and down at 82 mph before I just couldn't trim it up much at all.

[Rebel1]

What lower unit do you have? I take it is a Sportmaster or you have the water inlets closed off to be able to run 1.5 above the pad. Bring that motor back up to even with the pad and go from there.

[colreb2000]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rebel1 &raquo;</TD></TR><TR><TD CLASS="quote"> Bring that motor back up to even with the pad and go from there.</TD></TR></TABLE>

He's already runnin above the pad there Jason, even when he lowered it an inch....Geez

I would raise it back up also.

[chad202]

Raise it back up and run another prop. Porposing is not just a setup up issue. Wrong prop for your setup could cause it. With a sportmaster, you need to be well above the pad.

[canadabullet]

My 202 was porpoising badly as well so I installed an Attwood Hydro Stabilizer Fin and the problem is gone !!! It comes out of the hole faster , stays on plane slower, has less backwash and rides smoother in the rough. I grease my midsection after each outing . It totally changed the low speed personality of my boat and I won,t take it off.. I highly recommend an Attwood Hydro Stabilizer ....

[GoBama]

CB,

... and what exactly do you grease your midsection with???

[canadabullet]

Whatevers in the old grease gun !!!!

[jeff210]

Isn't the stabilizer fin out of the water when running?

[canadabullet]

Yes the Fin is out of the water when on plane usually , but, in rough water it touches the water lots...

[bentrod202]

lots ?

[canadabullet]

Lots .... as in a lot of times... When it is rough enough for whitecaps on the waves and the boat is getting tossed around the Fin smooths out the ride ...

[bentrod202]