Impeller Detailing
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Impeller Detailing

  1. #1
    I'm No Expert Shaun's Avatar
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    Default Impeller Detailing

    Out of all things that most of us DIY guys here on the forums do I never see anybody do their own impeller detailing, nor is there any real information on it, why? My stock AT stainless impeller to my eye actually doesn't look that bad. I don't see/feel many areas that have large burs, and it seams like it would flow well. The areas i do notice that could use some work is the corners where the blades meet the center and outside of the impeller. Those have a fat spot where i could see it causing some disturbance. Another thing would be to sharpen the blades. Any major reason why you guys arn't doing this. I'm thinking about buying a kit that has a bunch of roll cartridge pieces and seeing if i can clean mine up a bit myself...
    Last edited by Shaun; 06-20-2011 at 07:41 PM.

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    Senior Member DuaneHTP's Avatar
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    Unless you really know what you are doing, your boat will probably run better if you leave it alone. I've tried to teach the last three people who have worked for me how to detail an impeller. What I've learned, is that it's more of an art. Kind of like trying to teach someone how to paint a picture. You just have to have the "Feel" for it and know what every little angle and edge change will do and how it will react. Seems like it takes years to learn the art. I think that is partially why it's not common knowledge here on the forums. I've done it for over 40 years, and I know I could not put it into words.
    Duane HTP

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    Member hollbrow's Avatar
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    Default impeller detailing

    I too would like to hear some tips from some of those who know a few things about it. I don't fool myself into thinking I could do a professional race prep on an impeller without taking up the trade- and would not dream of changing the curvature of the blades and such- but maybe very basic stuff similar to deburring cylinder head ports and port matching intakes? Is there just nothing that we could do that would improve an impeller from the as-cast form from the manufacturer?

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    Quote Originally Posted by DuaneHTP View Post
    Unless you really know what you are doing, your boat will probably run better if you leave it alone. I've tried to teach the last three people who have worked for me how to detail an impeller. What I've learned, is that it's more of an art. Kind of like trying to teach someone how to paint a picture. You just have to have the "Feel" for it and know what every little angle and edge change will do and how it will react. Seems like it takes years to learn the art. I think that is partially why it's not common knowledge here on the forums. I've done it for over 40 years, and I know I could not put it into words.
    Duane HTP
    How much dose that cost Detailing I mean Knowing that you are the impeller Hi-helix GOD!!!!

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    Senior Member Widetrack's Avatar
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    From some of the bowls and impellors I have seen over the years where guys have tryed to detail! There has been alot of scrap Alu.,bronze and stainless out there! Super slick doesn't always make a setup perform better in all apps.!


    SOMEONE SAID YOU CAN'T TAKE IT WITH YOU! SO,IM BURNING IT UP ONE GALLON AT A TIME!
    WT

    WFL Crew!!!

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    Member hollbrow's Avatar
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    Default impeller detailing

    Well, when mine was out of the pump, I looked it over, decided I didn't even have an inkling as to what would help/hurt so I said said screw it. If I ever get serious enough to need a killer impeller I'll go to the pros. Just like cylinder heads, very few folks have the skill, money, equipment & time to be able to R&D this sort of thing- those who do, have so much invested in it that it becomes their livelihood. At that point, no one can blame them for holding onto their tried and true secrets.

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    Senior Member Cowboy_Mike's Avatar
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    Quote Originally Posted by DuaneHTP View Post
    Unless you really know what you are doing, your boat will probably run better if you leave it alone. I've tried to teach the last three people who have worked for me how to detail an impeller. What I've learned, is that it's more of an art. Kind of like trying to teach someone how to paint a picture. You just have to have the "Feel" for it and know what every little angle and edge change will do and how it will react. Seems like it takes years to learn the art. I think that is partially why it's not common knowledge here on the forums. I've done it for over 40 years, and I know I could not put it into words.
    Duane HTP
    Wish I had some one to show me how to build pumps, and most of all blue print impellers,a nd pump!! You guys that do this, are awsome!!

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    I'm No Expert Shaun's Avatar
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    Duane, thanks for the response. I'm actually pretty surprised by it though. I figured detailing an impeller mainly was just to remove the simple flaws that would cause a disruption to flow. I didn't think you would really be removing that much material, mainly just smoothing it out and sharpening the edges. Sounds like it's a pretty complex task.

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    Senior Member bp298's Avatar
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    Quote Originally Posted by hollbrow View Post
    Well, when mine was out of the pump, I looked it over, decided I didn't even have an inkling as to what would help/hurt so I said said screw it. If I ever get serious enough to need a killer impeller I'll go to the pros. Just like cylinder heads, very few folks have the skill, money, equipment & time to be able to R&D this sort of thing- those who do, have so much invested in it that it becomes their livelihood. At that point, no one can blame them for holding onto their tried and true secrets.
    it's not about holding on to secrets. it's about giving someone information, and they promptly go home and screw it all up. then the person automatically turns around and blames the pro that gave them the information. it's way better for the pro to avoid that scenario all together.
    picasso couldn't give someone an hour, or 8 hours instruction, and turn them into an instant picasso.

  12. #10
    Senior Member DuaneHTP's Avatar
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    Thank you BP. You hit the nail right on the head.

    Duane HTP

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