My trannies appear to be blowing ATF out of the vent after extended WOT runs. I've been told to overfill them slightly, but even with the levels down to 3/4 full on the dipstick, they stull puke. At 3500rpm, they're fine.

What are my alternatives? Does a catch bottle that returns back into the sump exist? Where do they plumb in, and where can I get them? What's the "right" level to fill a BW trans?

Thanks,
Brian

best thing to do is plug the factory vent , get a piece of tubing , plastic, stainless whatever , and attach it to your fill tube , give yourself a foot or so and put a k/n clamp on breather at the top. call drew at drew marine and he will give you the same info , that's where i got this helpfull info.

Mercury used to make a catch can for those that connected to the vent hose. What you did was remove the vent with a pair of piers and tap in a barb fitting with a small hammer. Then you would run a vent hose, 1/4" I believe, up to the catch can on the transom. I have installed a few on Fountains with TRS and they work quite well.

Pwrbt33- John S.
Offshore Performance
1-877-GOFAST1
410-827-0200

Pwrbt33-- My 1998 Hustler Slingshot is set up that way. The Mercury owners Manuals that came with the boat specifically talks to them as expansion resevoirs. For what it's worth. --Lou

We have solved the puking problem on our modified units. Comes from a number of places internally. Any one of the solutions mentioned will work, for a while there was a factory kit that extended the dipstick with a t and hooked the vent into the T to put the fluid back in the sump. I think I have a couple left.

I just got back from a test run today. I pulled off the vent cap, stuck a 3/8" hose over the vent nipple, and ran it into the top of a bottle tie-wrapped to the transom. Looks like they've caught a half a pint each, after some decent WOT runs. Bilge is squeaky clean, yippie!

So now I just need to plumb this puke back into the sump. Marc, I'll call you in the morning and see about getting a pair of these shipped to me.

Thanks for everyone's help,
Brian

just stumbled across these...


http://www.iboats.com/mall/index.cgi...t_id=502927248