expander

First of all, I´m swedish, so my english is not that god.....

I have a Sea Ray 270 Sedan Bridge -80 Whit 330 hp 454 Mercrusier, TRS and Merctans II. The oil in the trans ran outand it burnt up, so, I´m about to remove the engin and chang tran to a used MerctransII, whit all history,I have all history on.

The thing is, that I have just gott my hans on a 470 hp 454.

Will the merctrans II handel the 470 hp? and does anyone have a manual (Tecnical) for the TRS and the merctrans (blueprint)?

And does anyone hav a wild guess what will happen whit speed, fueleconomi ece?

Thanks

Lars Berglund, Stockholm, Sweden.

MOBILEMERCMAN

The merc trans is is at its limits with 470 hp. It is basically a good trannie and is pretty efficient. With stock power I guess it lasted many years. With more power it is a matter of driver habits and tendencies that with determine its dependability. It was a weak reverse set up. It will not tolerate hard reverse thrusts. It also may have a tendency to engage slowly and you need to allow it to engage before adding throttle. You can find the full service manual with in Mercruiser # 2 service book.
This I have previously photographed.

DareDevil

I think your sea-ray is to haevy for the Merc II with that power.
I would put BW. C72's in there.
Just my 2c.

expander

The egineroom is to short for the BW..../Lars

expander

Well, in the arcapelgo we dont drive that fast so, I won´t push the trohtel that hard. That service manual is REALY hard to find in sweden....

MOBILEMERCMAN

You should be able to order it from a dealer. I will look into availability later if need be.

White Knuckles

Good Link

http://www.kcmarinetr.com/merctrans.html