Looking for info on Michigan prop

[mr 88]

Have a trashed out- Michigan smc 380 cup-[ that is the only marking stamped on prop] trying to find out what pitch and diam this is. Searched EB and found a 378 that was 15 1/2 x 19 and thats as close as I can find. Just bought as is,as is I am rebuilding the engine and have never had it in the water for any rpm numbers etc.

 

[limitout]

Re: Looking for info on Michigan prop

sometimes they stamp it on the inside lip of the cup


you can confirm the diameter at least by measuring the center point of shaft to the tip of a blade then double it for your prop diameter size



EDIT: hey I found one for you, look here: http://www.ebay.com/itm/Michigan-Wh..._Accessories_Gear&hash=item53fb9cf5ce&vxp=mtr

 

[smokeonthewater]

Re: Looking for info on Michigan prop

you should be able to cross reference it here

http://www.velocitypropeller.com/Michigan_OB_&_SDProps.pdf

 

[mr 88]

Re: Looking for info on Michigan prop

Thanks for the cross reference.Came up as a 15 1/4 x 21 which seems like a lot of prop for a 22' CC boat maybe 2500/2800lbs with a merccruiser 470 180 hp pushing it.Like I said I never had it out but for some reason I was thinking a 17 would be what I was after. I have a 22' bowrider 3500lbs that has a 350 magnum in it and runs a 19". More than likely I will throw that 19 on before buying anything.

 

[smokeonthewater]

Re: Looking for info on Michigan prop

good idea to test BUT understand that you v8 boat has a 1.5:1 reduction and the 4 cyl has 2:1 so it will use a steeper pitch prop for the same water speed

 

[mr 88]

Re: Looking for info on Michigan prop

Thanks ,yes I did forget about the gear ratios. I will take it to a prop shop to verify specs.

 

[Texasmark]

Re: Looking for info on Michigan prop

Why don't you ask the manufacturer: Home // Michigan Wheel Marine

Mark