did i cook my flappers?

[artificialreef]

Hi again folks. I have a basket case that i bought on the cheap with these hated 470's. They are twins and have good compression so i plunged in before i found out that the motors are not well received. Well i have no marine experience but do have a little automotive so i proceeded to replace the usual points, plugs, condenser, wires, cap, rotor and began to turn these pups over. I did put it on muffs while working on them but did not know i would cook sh*t whithout changeing the impellers first. Got them both running but one started running hot and smoking. I shut the hot one down at 180 degrees so i know i did not blow a gasket but it was smoking and smelling like burning rubber. From the reading i have done i have come to the conclusion i may have cooked the flappers on the hot one. I have also read that the riser with the Y pipe you do not have to pull the engine to replace the flappers and the log type you do. My question is.

Can some generouse soul post a pic of what the riser with the Y looks like and what the undesirable one looks like too please? I can turn a wrench but pulling the motor would really blow.

Also i did pull the outdrive to change the impeller and will do the good one before i start it again.

Is there anyway to look through the transom with the outdrive off to see the shape of the flapper?

My only chance of no damage would be that the trim/tilt pump was bad on the hot one and i removed the pump and maybe the smoke and smell was just hydraulic fluid burning off the hot parts.

Nother quick question, if i change the impeller (hose off the hydraulic fluid) and try it on muffs again, anyone think thats stupid? i will watch the temp gauge. But it did smell like rubber. Can i do more wrong doing this?

Any help is appreciated.

Thank you.


Jim
1983 26ft. Tiara Continental basketcase
hasnt seen the water since i purchased it in 2009
Twin 470's

 

[stonyloam]

Re: did i cook my flappers?

i have come to the conclusion i may have cooked the flappers on the hot one. I have also read that the riser with the Y pipe you do not have to pull the engine to replace the flappers and the log type you do. My question is.

There is no "Y" pipe (Y pipes are on "V" engines) just an exhaust pipe, just terminology confusion I think. Do you have two engines attached to two drives that the exhaust exits through the drive? If so you have 1 of these two:http://www.mercruiserparts.com/Show...=1075&bnbr=190&bdesc=EXHAUST+ELBOW+(M0038-N7) or http://www.mercruiserparts.com/Show...=1075&bnbr=180&bdesc=EXHAUST+ELBOW+(M0037-N7) Looks like one bolts together the other uses a exhaust tube. I know for a fact that you don't have to remove the engine with the one with the tube. You might with the other I do not know, but I can see where you might.

If you cooked them to the point where they fell apart, the remnants will be in the exhaust chamber of the dive. They are steel, so they are not going anywhere.