Yesterday went to swap out my mirage plus to a hydromotive prop. I had swapped out the mirage plus to a bravo 1 with no problem but when I put the hydromotive prop on the splines on the end of the prop shaft were about 1/8" to 1/4" past the back end of the prop. The thrust washer seems to be fine and fits perfectly. Do I need to use the old style mirage brass fitting on the end of the prop shaft to install these props?

I found out at the Milwaukee races that Hydro props require a differnet brass fitting.
Very similar to Bravo, but just cut down real short.

You will have to get one.
I was told that you could possibly sue two thrust washer back to back but Iwould think this would be a little risky

I have two of the older style mercruiser parts to try. Hopefully that is it.

No, this is a hydromotive specific part. If you had a way to accuratly cut it, the stock merc castle could be cut down to work.

Cord-
The merc castle looks like it would fit. How would it have to be cut down?
Dave

Well, you said "older". I'm not familiar with any "older" style of castle nut. I only know the flo-torque style castles. The hydromotive castle is exactly like the current merc castle, but it has about a half inch of splines. If that description matches the "older" style of castle, then you are good to go.

Cord- that matches exactly what I have.Thanks.