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Old 03-09-2010, 05:04 PM   #1
Master Sergeant
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Default loader fit

Is it OK that the back/bottom part of the loader does NOT touch the bottom of the inlet? I noticed a vibration in the boat and think it might be this.
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Old 03-09-2010, 05:25 PM   #2
sleekcrafter
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Have seen them both ways, double check the loader for cracks, and if it is still bolted in tight. Standard Stainless harware will stretch, at higher speeds, and lossen the loader. The shoe can be blended in a little on the sides.....
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Old 03-09-2010, 05:48 PM   #3
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Originally Posted by sleekcrafter View Post
The shoe can be blended in a little on the sides.....
And the impeller looks munched.

If the loader isnt touching and you are ok with that cut all that garbage hanging off the bottom of the loader off. If you want it touching weld more material on till its touching and acting like a support.

Last edited by cs19; 03-09-2010 at 05:50 PM.
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Old 03-10-2010, 05:24 AM   #4
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Default not ok.

it is not ok. the back end needs to be supported by resting on the intake. it will eventually break if not ask me how I know. you can tilt it a little to make it touch by using shims in the back two bolt hoes to bring the back end down a little. this will change the amount of water it picks up. I read this info years ago when I purchased a GTH top loader. on my GTH top loader, I drilled and tapped a hole for a bolt with a lock nut so I can adjust the back end of the loader up or down. you must shim accordingly at the front mounting bolt holes to keep everything tight so as not to flex or stress anything.
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Old 03-10-2010, 05:57 AM   #5
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If you are running a stainless impellor and you were running an Alu. one before, you will notice a rumble vibration! Happened to me when I switched from Alu. I thought at first that it was loosing the thrust bearing! I have an MPD loader and I don't think it touches anywhere in the housing! I would do as CS said and build it up! I like the loader pad bolted flat to the housing! FWIW! WT
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Old 03-10-2010, 06:17 AM   #6
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Originally Posted by OkieDave View Post
it is not ok. the back end needs to be supported by resting on the intake. it will eventually break if not ask me how I know. you can tilt it a little to make it touch by using shims in the back two bolt hoes to bring the back end down a little. this will change the amount of water it picks up. I read this info years ago when I purchased a GTH top loader. on my GTH top loader, I drilled and tapped a hole for a bolt with a lock nut so I can adjust the back end of the loader up or down. you must shim accordingly at the front mounting bolt holes to keep everything tight so as not to flex or stress anything.
I'm going to disagree here. You don't want any part of the loader touching anywhere inside the the intake area except for where it bolts to the mounting pad. The loader pad provides more than enough strength to hold the loader properly. If the loader that I've been using in the 405 can take 130 mph, I'm pretty sure quite a few other guys are running similar loaders have no problems. Over time, yes sometimes they will crack. That is when you fix them or replace them.

Tilting the loader is not how it is supposed to work. You get a loader built with appropriate ramp angles, lengths to match your boats needs.

Fairly certain CS was joking about the support deal.....
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Old 03-10-2010, 06:58 AM   #7
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mine's never touched. as long as the pad fits flush, and the machine screws are all nice and snug, should be fine. either way, it should be routinely checked to make sure the screws haven't backed off or stretched.
if your impeller had a load of crap go through it, could result in vibration. also, if any fastener is loose on your rideplate, it can vibrate like crazy.

but those shoe edges that are hanging down are creating drag. blend them.
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Old 03-10-2010, 09:40 AM   #8
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Originally Posted by bp298 View Post
mine's never touched. as long as the pad fits flush, and the machine screws are all nice and snug, should be fine. either way, it should be routinely checked to make sure the screws haven't backed off or stretched.
if your impeller had a load of crap go through it, could result in vibration. also, if any fastener is loose on your rideplate, it can vibrate like crazy.

but those shoe edges that are hanging down are creating drag. blend them.
Funny you should say that about the shoe edges. I just got back from dropping them off at the machine shop.
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Old 03-11-2010, 05:53 AM   #9
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Fairly certain CS was joking about the support deal.....
Wasnt joking, was just saying that if he felt he had to have that support (which you do not need) he could do those things, like I said I would cut all that crap off or get a different loader.

The loader in my boat has an incredible amount of laps and river time on it, never had a problem and like you, I dont have those supports.
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Old 03-11-2010, 05:56 AM   #10
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Here are some pics of some loaders, notice how they mount and do not have that support hanging into the inlet tract.

http://home.pacbell.net/jmcclure/Loaders.html
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Old 03-11-2010, 07:05 AM   #11
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Is support the sole purpose of this feature? Do they help to keep water directed to the outer part of the impeller or provide another function?
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Old 03-11-2010, 09:57 AM   #12
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Quote:
Originally Posted by cs19 View Post
Here are some pics of some loaders, notice how they mount and do not have that support hanging into the inlet tract.

http://home.pacbell.net/jmcclure/Loaders.html
I'd sure like to see this photo from some different angles


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Old 03-12-2010, 06:58 PM   #13
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Is support the sole purpose of this feature?
yeah
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