Boring 144pump up to 148???

Kawastyler

Kawastyler

Location
Germany
Hallo, have some 148 props here and a 144solasmag. Have removed a coroded stainless sleeve from a old wearring and measured i have to mill a little bit to come to 148mm+clearance. Then i would sand the statorfront betwin the vanes for good flow.

Do you thing it works or should i try this on a nowmal 144mm statir first and fill the stator up to 75mm hub with epoxy?????

Thsnks, Andy
 
badvinny

badvinny

Location
Saskatoon,SK
I have bored 140's to 144mm with no issues but that was on complete stainless pumps. Your aluminum liner requires a minimum. 005"clearance or it will cavitate and burn at the edges. I would try the solas before epoxying the stock one.
 
kevbo

kevbo

Location
dfw
I would use and cut the Solas body since this is a max effort type of mod, you should also widen the pump inlet as well. Dont bother unless you are willing to make sure the 148 impeller is perfectly matched to the engine.
 
DAG

DAG

Yes, my balls tickled from that landing
Location
Charlotte, NC
Why would you have to machine the front of the vanes and between the vanes?


I understand if you were starting from scratch you would want to build a pump so the front of the vanes and between the vanes are the same diameter as behind the vanes because its more efficient, but, we are talking weekend warrior guys worrying about a 80 thousands of an inch step. I’m asking the question but I would assume the Volume difference between the different thickness in stator vanes from brand x pump to brand x pump is a lot more than the volume left by a .080” step; no one talks about vane thickness and how much area they take up. I would assume 80% or more of the dynamic gain is from the larger prop being able to process more water per revolution. The water will just speed up thru to stator it’s not going to choke the prop out.. is it?


Has anyone tried just running a148 prop and ware ring with a 144 housing and tapered transition ?


Just seems like its 80-90% more work to sand between the vanes for only 10-20% gain. And it not like you can even sand between the vanes as good as you needed to anyways. I know its different topic completely but guys are running big hub props on oem housing just fine and that should be a much bigger no no than that is being talked about here.


Just my .02, seeing if I learn something here
 
Crab

Crab

thanks darin...noswad!
Location
Seattle
Has anyone tried just running a148 prop and ware ring with a 144 housing and tapered transition ?

I talked to Skat, it can be done but they shrugged and just said why.....
 
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