Aftermarket Water Pump Impellers

[headcoats]

Need to get a replacement and was looking at genuine and aftermarket like the Pro design etc and it seems the aftermarket ones which some have stainless shafts aren't up to the job and aren't hard enough and wear the shaft down in no time

Anyone come across this ?

Came across this info on the shaft

 

www.mullengineering.com/sc/store.php/products/yamaha-banshee-yfz-rz-billet-waterpump-water-pump-impeller-drag-race-radiator-online-444

[bazzer5115]

Yeah you right.I have 2 high flow pumps,that were fitted to a couple of engines that I bought a few years ago.Both have deep groves in them from wear on on seal.Running standard ones at the moment because of this.If you or anybody can recommend good ones with hardened shafts with high flow I also be interested as I would like to bring temp of my tuned engines down a bit.I have high capacity rads but they still run a little warm when thrashing them.
Baz

[headcoats]

Well the one in the link may suit you but I have decided to order a genuine part as that will have the proper hardened shaft

Everything that's shiny isn't always good !

My tuned engine which put out 68 bhp never overheats unless I get stuck in traffic then it rises alarmingly

[Yogi]

I know norbos having some made with hardened shafts but still a couple of months away

[headcoats]

Norbs has his finger on the pulse then LOL

[bare]

Sadly . Aftermarket parts..Invariably prove to be Crap..
With only a few exceptions.
Real question is Why? do we keep handing over good $$ for them

[lrcarl]

good info never heard about this problem
looks like another £50 wasted for me

[LC_BOTT]

As Ircarl, never heard anyone mention it before either, so probably the reason it doesn't get addressed Bare, and possibly the low mileages the bikes now do?

[Norbo]

They used to be made with st/st shafts But i have my ones made with hardendt steel ones as the other tended to groove up . i had thge shafts on my old ones presed out and new shafts made now the new batch all have hardened shafts . im getting some extra shafts made as well for any one with a grooved shaft.

[Mr Kipling]

Agreed good info to know ....