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Old 11-30-2012, 06:36 AM   #1
kaos
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Default Hamilton 212 Stainless Impeller

I just bought a Thunderjet Rio and it has the stock impeller. Would it be worth the expense to upgrade to a stainless turbo impeller. Thanks for all the help. I am new to this style of boat.

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Old 11-30-2012, 06:44 AM   #2
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Default Re: Hamilton 212 Stainless Impeller

The stock impeller is stainless isn't it? I have never had a 212, but I had a Kodiak 3 stage and the stainless turbo impeller made a big difference. It was worth the $800 I paid....
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Old 11-30-2012, 06:50 AM   #3
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Default Re: Hamilton 212 Stainless Impeller

It doesn't look like stainless and its definately not a turbo model. Does anyone know where I can get a stainless impeller.....?
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Old 11-30-2012, 06:58 AM   #4
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Default Re: Hamilton 212 Stainless Impeller

Yes it's stainless already. There are some performance "upgrades" you can do but frankly I'm not sure it's really worth it. Some guys send the impeller and pipe to Roy in Grangeville ID and he can tighten up the tolerances. Cost is only a 2 or 300 bucks. This lowers your RPMs a bit and is supposed to save you fuel. I did it back in 06 when my tub was new and found that it felt like the engine (8.1L) was bogging down. I would have rather tuned the impeller to get me to 4200 or 4300 RPMs instead. That would of been more useful.

If your turning 4-4200 RPMs WOT, you're right where you should be.

Edit: you can look at the impeller and it's got a stamp on it as to which pitch and model. look at it and let us know what it is. I'd be surprised if it's not a turbo. Rio's are fairly new boats...unless the previous owner ordered it that way...

Call Hamiliton in Seattle...or anyone that sells boats with hamilton pumps... Cook Engine can probably help you out since they are a dealer or seller...
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Old 11-30-2012, 07:30 AM   #5
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Default Re: Hamilton 212 Stainless Impeller

It does turn between 4-4200 rpms. I will look at it when I get home. anyone have the number to Cooks?
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Old 11-30-2012, 07:39 AM   #6
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Default Re: Hamilton 212 Stainless Impeller

http://www.cookengine.com/

(503)289-8466
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Old 11-30-2012, 07:51 AM   #7
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Default Re: Hamilton 212 Stainless Impeller

thanks! its awesome to have such a network of people with common interests! I love this place!
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Old 11-30-2012, 08:04 AM   #8
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Default Re: Hamilton 212 Stainless Impeller

The coolest jet pumps I have seen are the schlagel marine trim units. If I ever own a jetboat again it will have trim on the pump.



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Old 11-30-2012, 08:38 AM   #9
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Default Re: Hamilton 212 Stainless Impeller

Spendy option just to make the boat porpoise. It's also good for blowing out your buddies windows too.
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Old 12-01-2012, 05:45 PM   #10
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Default Re: Hamilton 212 Stainless Impeller

great also for messing with the water skiers being towed behind the boat
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Old 12-03-2012, 06:51 AM   #11
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Default Re: Hamilton 212 Stainless Impeller

haven't had a chance to see what impeller is in there, but ran it at the local lake at 4200 ft elevation and could only get 3500-3600 rpms. Any thoughts as to why? Is it the elevation that is affecting performance?
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Old 12-03-2012, 07:43 AM   #12
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Default Re: Hamilton 212 Stainless Impeller

Yes, there is less air up there. If you consistantly run at that elev then you may want something different (impeller wise). What engine do you have?
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Old 12-06-2012, 12:18 PM   #13
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Default Re: Hamilton 212 Stainless Impeller

marine power 5.7l. 310 hp, i think.
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Old 12-06-2012, 05:30 PM   #14
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Default Re: Hamilton 212 Stainless Impeller

You should have a 2.4kw impeller with that engine.

If...and I'd only do it if a majority of your boating is at higher elevations, you could knock it down some to get back to 4000rpms. If it's occasional, I'd leave it.
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Old 12-07-2012, 10:48 AM   #15
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Default Re: Hamilton 212 Stainless Impeller

thanks for the info! I live at 4500 feet and the local lakes are that high. But every spring, summer, I fish the coast. How hard is it to change an impellor? I used to change props all the time depending on where I was boating. Woudl this be a feasible option?
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Old 12-07-2012, 12:36 PM   #16
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Default Re: Hamilton 212 Stainless Impeller

Anything is possible...just costs money. Call up Hamiltion in Seattle. Those guys will be able to tell you what KW impeller you'd want for the higher elev. It's not hard to RR an impeller and once you get good at it you can do it in maybe 15min or less.

Or just add a superchager and then you won't have to worry about air...you'll have plenty.
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Old 12-07-2012, 06:43 PM   #17
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Default Re: Hamilton 212 Stainless Impeller

Quote:
Originally Posted by WaterDog View Post
Or just add a superchager and then you won't have to worry about air...you'll have plenty.
Then he will just need to move up to a 3.4kw for 4000' and a 4kw for sea level
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Old 12-07-2012, 07:49 PM   #18
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Default Re: Hamilton 212 Stainless Impeller

Yeah I didn't want to add that part. Maybe a 3.4kw would work on a blown 350. Would be fun to see how it runs with other peoples money.

He wouldn't need to change it out for sea level tho. Most of the guys I know with LSA's turn the same rpms no matter the elev. I know my turbo does....
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Old 12-10-2012, 08:52 AM   #19
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Default Re: Hamilton 212 Stainless Impeller

Turbo or super charger is an idea that sounds good. What would something like that cost?
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Old 12-11-2012, 07:23 PM   #20
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Default Re: Hamilton 212 Stainless Impeller

Probably a few grand I'd guess for a SC. I don't anyone that has done a 350 tho. The 6.2L LSA is SC and puts out 500+hp so maybe if you were ready for a repower that might be an option. Spendy tho. I've got a turbo on mine but it's diesel so it's different yet.
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Old 12-18-2012, 08:03 PM   #21
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Default Re: Hamilton 212 Stainless Impeller

If you find that you have something other than the 2.4 impeller let me know,might be able to do a trade.that should be the standard impeller unless someone ordered different or PO changed it.Like was said the guys at hamilton in seattle can help.BTW blower way north of couple G's.

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Old 12-19-2012, 08:29 AM   #22
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Default Re: Hamilton 212 Stainless Impeller

I looked at a lot of options back when I had my jet boat - turbo, supercharger, etc. Problem besides the cost is that you will lock yourself into using premium gas and that isn't available at a lot of marinas. The best bang for your dollar that I found was to put a stroker kit in your engine and make it a 383.
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