SoCal Jet Boats
Tech Talk => Jet Pumps => Topic started by: SomeThingWilder on February 10, 2016, 08:37:49 PM
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Can't seem to find any ID on my impeller. What steps should I take to ID . Not really wanting to replace it or do anything at all till I run the boat with the new power plant. Just my father-in-law can't recall what impeller it is.
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Measure it to the cut chart. Easy peasy.
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Measure it to the cut chart. Easy peasy.
like this chart GT
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Or this
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Or this
Yep,
Either will fly.
GT
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Yep,
Either will fly.
GT
How do u determine if it is aluminum or SS
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How do u determine if it is aluminum or SS
Is this a serious question?
Thump it with a screwdriver handle. A stainless will "ring" and aluminum with "thud".
GT
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Is this a serious question?
Thump it with a screwdriver handle. A stainless will "ring" and aluminum with "thud".
GT
it was a serious question we are not all gifts of gods. No need for insults thought this was a forum to help each other not bring one down.
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it was a serious question we are not all gifts of gods. No need for insults thought this was a forum to help each other not bring one down.
Not an insult, thought I was being trolled.
The easy answer is the stainless impeller will weigh about three times what an aluminum does, but it's together sooooooo.
The smart-ass answer I had was, "one is made of stainless and the other is aluminum".
If you scratch it with a pocket knife, you'll know real quick. Stainless won't "sliver".
GT
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Not an insult, thought I was being trolled.
The easy answer is the stainless impeller will weigh about three times what an aluminum does, but it's together sooooooo.
The smart-ass answer I had was, "one is made of stainless and the other is aluminum".
If you scratch it with a pocket knife, you'll know real quick. Stainless won't "sliver".
GT
Thanks GT I appreciate your knowledge. From what I measured and scraped/knocked on with a screwdriver it's an aluminum 'aa' impeller.
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it was a serious question we are not all gifts of gods. No need for insults thought this was a forum to help each other not bring one down.
Sorry if you took is as an insult. Not intentional.
GT
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Thanks GT I appreciate your knowledge. From what I measured and scraped/knocked on with a screwdriver it's an aluminum 'aa' impeller.
Depending on what your trying to do, an AA is a good start, meaning you can't cut the impeller "up".
GT
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Sorry if you took is as an insult. Not intentional.
GT
lol I did a little . Just new to jet boats and wanting to learn all I can and be as knowledgeable as possible and I heard this was the place to ask questions and learn what y'll known for years
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lol I did a little . Just new to jet boats and wanting to learn all I can and be as knowledgeable as possible and I heard this was the place to ask questions and learn what y'll known for years
You're in the right place bud.
A thick skin and not reading too much into a single post is probably the best advice I could give.
I am actually writing a building condition report right now (not by choice) and probably didn't have a good game face on.
My apologies.
GT
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You're in the right place bud.
A thick skin and not reading too much into a single post is probably the best advice I could give.
I am actually writing a building condition report right now (not by choice) and probably didn't have a good game face on.
My apologies.
GT
no worries I got the answers I needed. Thanks again !!!
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That is definitely NOT a AA impeller. The vanes on a AA impeller stick out past the the shroud and hub (picture 1). You can't simply measure the outside diameter of the shroud. You want to measure the actual vane length by measuring the diameter where the vane ends (picture 2 & 3).
That impeller looks like it was cut at an angle only, as opposed to cutting the outside first and intersecting the ends of the vanes at this point. This is sometimes done in an attempt to preserve any balancing that has been done (picture 4). Picture 3 clearly shows the angle cut only without turning of the OD.
Lastly, you can see the witness marks left when the vanes were shortened on your impeller. Picture 5 illustrates an example of just such a witness mark.
Good luck,
Joe
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That is definitely NOT a AA impeller. The vanes on a AA impeller stick out past the the shroud and hub (picture 1). You can't simply measure the outside diameter of the shroud. You want to measure the actual vane length by measuring the diameter where the vane ends (picture 2 & 3).
That impeller looks like it was cut at an angle only, as opposed to cutting the outside first and intersecting the ends of the vanes at this point. This is sometimes done in an attempt to preserve any balancing that has been done (picture 4). Picture 3 clearly shows the angle cut only without turning of the OD.
Lastly, you can see the witness marks left when the vanes were shortened on your impeller. Picture 5 illustrates an example of just such a witness mark.
Good luck,
Joe
Thanks for the info. I guess I need to have a professional look at what I have and to tell me what impeller it was/is.
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Thanks for the info. I guess I need to have a professional look at what I have and to tell me what impeller it was/is.
I am confident that you can handle it
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I am confident that you can handle it
I probably can..just need to get me a bigger caliber
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I probably can..just need to get me a bigger caliber
Cool, an opportunity to score more tools.... :thumbup:
GT
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I have been buying from Travers and MSCDirect. Sign up for email offers, you will come across some good deals. Not on sale now, but take a look at:
http://www.travers.com/12-direct-reading-precision-dial-caliper/p/57-015-008/
https://m.mscdirect.com/mobileweb/product_detail?id=76367135&hasRestrictedParts=false
https://m.mscdirect.com/mobileweb/product_detail?id=32755662&hasRestrictedParts=false
https://m.mscdirect.com/mobileweb/product_detail?id=63738546&hasRestrictedParts=false
Not a fan of digital, and if you aren't going to use it frequently http://m.harborfreight.com/12-inch-digital-caliper-47261.html