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JDAVIS9007
06-25-2008, 03:47 PM
I own a 2002 Pro Star 190 and the impeller housing is not perfectly round to say the least. The right side is flat and the impeller drags. I have had overheating problems ever since I bought the boat but it is used so rarley this is the first time I checked the impeller

Should the housing be a perfect circle?

bmeth11
06-25-2008, 04:09 PM
my impellar housing isn't a perfect circle if i remember correctly... or atlease its a little tighter on one side than the other...

thijs
06-25-2008, 04:10 PM
No it shouldn't be perfectly round. Pictures would help to make sure I am thinking what you are, but this is how it is designed.

dsoby
06-25-2008, 04:49 PM
The flat part is what creates the suction for the pump to work properly. If your boat is overheating, there are many possible causes. Start by checking the intake side of the transmission cooler for obstruction. Replace the impeller (johnson 612 probably), and check your thermostat.

JimN
06-25-2008, 04:51 PM
When did you buy the boat and what has been done to try to fix the problem? If the impeller has been changed without changing the gasket, that can cause the raw water pump to suck air, which doesn't work as a coolant very well.

JimN
06-25-2008, 04:51 PM
Johnson 812, not 612.

dsoby
06-25-2008, 04:52 PM
812, thanks JimN

Sodar
06-25-2008, 04:53 PM
You guys are talking about IMPELLERS!! This guy is talking about IMPELLAS!! Get with it, would ya! :rolleyes: :D

bigmac
06-25-2008, 04:53 PM
I own a 2002 Pro Star 190 and the impella housing is not perfectly round to say the least. The right side is flat and the impella drags. I have had overheating problems ever since I bought the boat but it is used so rarley this is the first time I checked the impella.

Should the housing be a perfect circle?
No, the eccentricity of the housing is what makes it work.

kjohnson
06-26-2008, 08:05 AM
Isn't an Impella an animal that roams the African plains? No I guess that is an Impala. So what is an Impella? Is that ebonics for impeller?

JDAVIS9007
06-26-2008, 01:23 PM
Thanks for all the advice on the "impeller" housing. Sorry I was in a rush, at work, and spelled it wrong.

I'm glad some of you got a good laugh!

JimN
06-26-2008, 01:27 PM
Are you in Jawjah? That would explain it. I have a friend down there and he claims that he doesn't have an accent, but he does.

Typing with an accent- that's a new one.

Much2do
06-26-2008, 04:25 PM
Isn't an Impella an animal that roams the African plains? No I guess that is an Impala. So what is an Impella? Is that ebonics for impeller?

You know the last Miss Ebonics pagaent had to be cancelled when they couldn't get anyone to compete as Miss Idaho.:)

coz
06-26-2008, 04:38 PM
Isn't an Impella an animal that roams the African plains? No I guess that is an Impala. So what is an Impella? Is that ebonics for impeller?


I found an impella and lets hope we don't need one :confused:

http://www.math.uu.nl/swi2007/impella.gif
Figure: Impella implanted in the heart

thijs
06-26-2008, 04:50 PM
That looks like an intra-aortic ballon pump. Not 100% on that though. I believe that the IABP doesn't extend so far into the left ventricle. Bigmac????

coz
06-26-2008, 05:02 PM
That looks like an intra-aortic ballon pump. Not 100% on that though. I believe that the IABP doesn't extend so far into the left ventricle. Bigmac????

The Impella Recover LD/LP 5.0 Support System has been developed to address the need for ventricular support in patients who develop heart failure after heart surgery (called cardiogenic shock) and who have not responded to standard medical therapy. The system is designed to provide immediate support and restore hemodynamic stability for a period of up to 7 days. Used as a bridge to therapy, it allows time for developing a definitive treatment strategy.
http://www.texasheartinstitute.org/Research/images/impella-1.jpg
http://www.texasheartinstitute.org/Research/images/impella-2.jpg
The Impella Recover system is a miniaturized impeller pump located within a catheter. The device can provide support for the left side of the heart using either the Recover LD 5.0 (implanted via direct placement into the left ventricle) or the Recover LP 5.0 LV (placed percutaneously through the groin and positioned in the left ventricle). The microaxial pump of the Recover LP/LD 5.0 can pump up to 4.5 liters per minute at a speed of 33,000 rpm. The pump is located at the distal end of a 9 Fr catheter. At its largest outside diameter, which contains the pump housing, the Impella measures 21 Fr. The catheter shaft contains the electrical connections for the pump motor and sensor as well as for a separate tube used for transfer of purged fluid.

thijs
06-26-2008, 05:09 PM
Wow, definately not a IABP. Never heard of these, might not be available in Canada. Here is a picture of a IABP, these increase back pressure on the heart thus increasing coronary perfusion. (The heart gets its oxygenated blood out of two sinus' in the aorta close to the heart (proximal) during the resting phase (diastole- the lower number in your blood pressure). (Again bigmac, can you verify??)

It is absolutely amazing what can be done now-a-days. I have been in the 'cath lab' to see angiograms and angioplasty (coronary stents). Totally the coolest thing I have seen since God's own medical miracle child birth.

TMCNo1
06-26-2008, 05:17 PM
Anybody got a recipe for a Peanut Butter and Jelly sammich?