Due my drives being lower than desired on stellings boxes(long story), I am investigating shortie lower units.

Any opinions on the pro's / con's of the IMCO Shortie vs. the BMAX Crescent Lower shortie?

The only differences I can find are a slightly different design and a 1 year warranty on the BMAX lower, and no warranty on the IMCO.

The design of the anti cavitation plate on the shortie BMAX looks like it might cause some drag, but I don't know.

Lastly, any opinions on this method of solving the problem?

Thanks,
Garrett

I would call Dean at the bravo shop and get all the info from him.Talked to him at the show in Miami and i'm sold on he's product just have to wait to get the $$ to order mine.

I would go with the Bmax as to what I've "learned"....

Care to expand on that comment? Inquiring minds want to know, or PM me.

Also have been pointed to Max Machine Worx. They have a really nice looking billet piece. As you might imagine, the price goes up.

Thanks,
Garrett

I spoke with Dean and am also considering the Imco vs the Bravo shorties. He said they had less drag because they were only 19 1/4" long. Anyone had experience with the Bravo shop and their products? Dean sounds like a great guy that really knows his stuff. I am thinking about getting the 2" shorties and leaving my top piece alone, or go with his recommendation of the x-gears on top. He said they were better than the xr gears. Anybody have experience?

Has anyone experienced any water pressure issues with the Bravo Shop drive? I have read in other posts where the Imco had high water pressure.

Also, what about the slip going with 2" shorties? Do 5 blades work better with this setup? Thanks.

Imco 22"
BVMax Ours 19"

Square inches of running surface:
Imco 143 square inches per side
Ours 123 square inches per side

B-Max has 40 square inches less running surface total.

The new HT BMax lower is guaranteed to 950Hp and TQ .Dean said they have them on a lot of Navy boats with 900 plus TQ Diesel with no failures. ya know the navy guys are jumping waves and don't give a shet .and Were paying for it
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There is no water pressure difference over the merc foot

I have 280 hours on my B maxs and I am trading mine in on the new HT style with crescent lowers

Rob
.

I will know first hand very shortly if there are any speed gains or handling differences between the sportmaster & BMax lowers, I will be testing the crescent lowers on my 35 Single Step Fountain soon. Here is a pic of the Sport Master Lower & of the BMax lower

imco lower to compare

I had IMCO's last year and had water pressure issues. 25-30 lbs at cruise and 35 lbs WOT.

Now that I have the BMax's at cruise water pressure is 18-20 lbs and 20-25 WOT.