Hi there!

I own a 33zx Donzi, 1995 with twin 502 Mercruiser Magnum EFI engines with Bravo One Gears and currently furious about changing my propellers.

its currently running on Laser II 23 Pitch and getting 62 Mph WOT @4600RPM,

wondering what propeller i could upgrade to, please help!

Ok, what is your goal?
Are you looking for speed or low end or overall performance?

Brett

Hi Brett,

Basically a good all around propeller.

Heard the 28 pitch bravo one propeller should do it? Any other suggestions and why? Thanks

I would concider 21 Revolution 4's.
Or, Labbed B1's.
We can set you up with stock test props if you would like.

Brett

Labbes B1?

Why go smaller pitch? Already with my 24's I notice so much ventelation ..

Because you are not getting enough rpms at wide open throttle. You should be spinning 502mpi's at 5000 rpms.

What Griff said.
Also, the 4 blade props have more blade area and will decrease the amount of ventilation and potential slip %
Your slip is fine but the venting can be fixed.

Brett

I messaged you back the other day don't know if you got it. I am running 28s but I have the twin step hual and 500efi's. Brett and griff are right you need more rpm.

Thanks guys! I'll try to get some for trials and will update you.

Hi Brett, unfortunately I'm not in the USA ..
what's your policy for overseas? Thanks!