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jetboataholic
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Discussion Starter #1
I don't think that I've ever seen them talked about on here. What are everyone's thoughts about them? I've got a buddy who's rebuilding his pump, and is planning on buying one. Are they worth it, and do they really do what they're supposed to? At what speed and horsepower are they needed, if at all? He also said that he found one that doesn't need any machining of the impeller shaft, it slides on and uses 1 or more setscrews to hold it in place. But I haven't been able to find this one, and I'm not to sure if I like the sound of it just being held in place by setscrews because of the forces being applied to it at higher RPMs. Thanks.
 

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jetboataholic
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Discussion Starter #3

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mo balls than $cents$
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your buddy's been smokin some good stuff:p inducers aren't for every boat, i've rode in some boats that it did nothing for em, been in other's that were turds without it. i run a gullwing and most gullwing guys run 1, yet most of the gullwings i've rode in with them, don't holeshot as hard as i do without 1. tunnels do well with them as do boats with smaller hp and b-c cut impellors, it just all depends on the boat and motor.

i'll be racing gullwing with similar power to mine this coming memorial day, and they'll be runnin inducers, so i guess we'll see where i stand without 1. my boat doesn't slip on holeshot, and i honestly don't think i need 1, but if i get my ass handed to me;)
 

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your buddy's been smokin some good stuff:p inducers aren't for every boat, i've rode in some boats that it did nothing for em, been in other's that were turds without it. i run a gullwing and most gullwing guys run 1, yet most of the gullwings i've rode in with them, don't holeshot as hard as i do without 1. tunnels do well with them as do boats with smaller hp and b-c cut impellors, it just all depends on the boat and motor.

i'll be racing gullwing with similar power to mine this coming memorial day, and they'll be runnin inducers, so i guess we'll see where i stand without 1. my boat doesn't slip on holeshot, and i honestly don't think i need 1, but if i get my ass handed to me;)
tom your dead on buddy;) i think they are overrated.:p
 

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mo balls than $cents$
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tom your dead on buddy;) i think they are overrated.:p
we'll see i guess, i'm racing a blown injected stroked tx-20 wednesday and a blown stroked tx-18 this weekend:D the 18 won't be shiat for me to saw off, but billy will give me a run:)devil
 

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jetboataholic
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2,798 Posts
Discussion Starter #9
your buddy's been smokin some good stuff:p inducers aren't for every boat, i've rode in some boats that it did nothing for em, been in other's that were turds without it. i run a gullwing and most gullwing guys run 1, yet most of the gullwings i've rode in with them, don't holeshot as hard as i do without 1. tunnels do well with them as do boats with smaller hp and b-c cut impellors, it just all depends on the boat and motor.

i'll be racing gullwing with similar power to mine this coming memorial day, and they'll be runnin inducers, so i guess we'll see where i stand without 1. my boat doesn't slip on holeshot, and i honestly don't think i need 1, but if i get my ass handed to me;)
Well, I fall into that category. Estimated 345 hp, and an AB impeller. But I've got no plan of buying one anytime soon, unless my boat is a super turd out on the water. Then, I might give one a try to see if it does anything for me. But, not likely, I've already got an intake loader, so I think I will be feeding the impeller plenty of water. Thanks.
 

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mo balls than $cents$
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Well, I fall into that category. Estimated 345 hp, and an AB impeller. But I've got no plan of buying one anytime soon, unless my boat is a super turd out on the water. Then, I might give one a try to see if it does anything for me. But, not likely, I've already got an intake loader, so I think I will be feeding the impeller plenty of water. Thanks.
you don't fall into that category;) a ab cut is still considered a big impellor where i'm from and there's no need for an inducer on it with your hp:)bulb
 

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jetboataholic
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Discussion Starter #11
you don't fall into that category;) a ab cut is still considered a big impellor where i'm from and there's no need for an inducer on it with your hp:)bulb
Thanks, I didn't know that. I just learned somethin' new today.:D

Is an AB just cut to a size between an A and a B? Thanks.
 

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jetboataholic
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Discussion Starter #14
Clearanced....blueprinted. ;)
You talking about the gap between the impeller and the wear ring shoulder? The gap that you adjust with the shims that you put behind the impeller. Mine was set at 0.035" when I pulled it apart, so that is how I put it back together.
 

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You talking about the gap between the impeller and the wear ring shoulder?
There are two critical impeller/wear ring dimenions/clearances that need to be checked and set. One as you state is the thrust clearance from the front of the impeller to the wear ring shoulder.

the second is the clearance from the inside diameter of the wear ring to the ouside diameter of the impeller wear surface. I believe that you are again looking for .030 here also.

If the second clearance is too large, you will lose a lot of efficiency of the pump, resulting in poor hole shot, increased engine RPM and lower top speed.

Doug
 

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we'll see i guess, i'm racing a blown injected stroked tx-20 wednesday and a blown stroked tx-18 this weekend:D the 18 won't be shiat for me to saw off, but billy will give me a run:)devil
I really do not see many blown jets leave hard out of the hole, sometimes even with an inducer. There are a few that I have seen leave hard that are the exception, but I can count them all on one hand.

I think the addition of an inducer will never hurt you, but I am sure someone has a story of a buddy who used one and it hurt their performance.
 

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mo balls than $cents$
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I really do not see many blown jets leave hard out of the hole, sometimes even with an inducer. There are a few that I have seen leave hard that are the exception, but I can count them all on one hand.

I think the addition of an inducer will never hurt you, but I am sure someone has a story of a buddy who used one and it hurt their performance.
i agree with ya, that's 1 reason i ditched the blown 475 for a bigger na nitrous set-up:D;) my last motor would launch hard but as soon as the boost "hit", the boat would jump outta the water and it took a sec to find the set again.
 

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Is a stuffer and an inducer the same deal, or is the inducer before the impeller and the stuffer after the impeller?? I didn't want to thread jack this one or start another one if they're the same thing.
 

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mo balls than $cents$
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Is a stuffer and an inducer the same deal, or is the inducer before the impeller and the stuffer after the impeller?? I didn't want to thread jack this one or start another one if they're the same thing.
your on the right track, the inducer is up frt., the stuffer is a plate or "void filler" behind the impellor.
 
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