| Author |
Message |
    
ERIC PAUL
Member
Username: ep_brooklyn
Post Number: 9
Registered: 04-2008
| | Posted on Thursday, October 01, 2009 - 07:06 pm: | 
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Hey guys,
I'm a firm believer in using only marine parts on my boat however I'm wondering if it's really necessary to use a chris craft water pump. I'm in the process of repowering with 2 new chevy 350's. Being that the water pump is just pumping antifreeze and doesnt come into contact with seawater should I really spend the extra $60.00 per pump? I can get chevy water pumps for $30.00 versus $90.00 for the marine water pump. This saves me $120.00 Any thoughts on this?
Thanks,
E! |
Bruce Reynolds
Member
Username: the_tassie_devil
Post Number: 63
Registered: 02-2009
| | Posted on Friday, October 02, 2009 - 04:01 am: |
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You will need a Reverse Rotation Pump for the Reverse Rotation engine, but I cannot see any other reason to not use the Automotive ones.
Especially as yo8u aren't pumping Salt Water.
Bruce. |
Robert A. Fierro
Advanced Member
Username: sandkicker
Post Number: 929
Registered: 06-2008
| | Posted on Friday, October 02, 2009 - 10:57 am: |
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RE:" 2 new chevy 350's"
If you are repowering with marine engines, they should come with marine water pumps.
One should NOT use an automotive or truck engine to repower a boat.
Insofar as just the water pumps, Bruce is 100% correct. |
ERIC PAUL
Member
Username: ep_brooklyn
Post Number: 10
Registered: 04-2008
| | Posted on Saturday, October 03, 2009 - 02:08 pm: |
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hey guys,
Thanks for saving me the $120.00. Thats what I figured. To robert fiero: I am repowering with chevy 350 marine longblocks. They come with marine camshafts, marine gaskets, marine freezeout plugs etc, etc... however, these do not come with the water pumps. I have seen longblocks that do come with the pumps but they could not match the price $975.00 or the written warranty 5 years unlimited hours/no restrictions except cracked block. Most companies offer 1-3 years. Thanks again guys. This site rules!!
E! |
Robert A. Fierro
Advanced Member
Username: sandkicker
Post Number: 932
Registered: 06-2008
| | Posted on Saturday, October 03, 2009 - 05:20 pm: |
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Sounds like a good deal... Who's the supplier? |
ERIC PAUL
Member
Username: ep_brooklyn
Post Number: 11
Registered: 04-2008
| | Posted on Tuesday, October 06, 2009 - 05:10 pm: |
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Hey Robert,
I ordered the two chevy 350's from california engines. (530-550-0355) One standard rotation $975.00 one reverse..$1200.00. I'm only telling you guys about them because they were so helpful and polite it was like a breath of fresh air. It was nice to deal with someone who actually made you feel like they appreciated your business not to mention made me feel protected. A 5 year warranty no questions asked is a great deal. When I was pulling out my starboard engine I accidently snapped my oil dipstick tube, I called them and Mark said no problem I'll throw it in for no charge. Also normally the chevy 350 comes with 260 HP theirs come with 285HP due to a larger cam. My uncle just called them to order a chrysler LM318 and they do that also. They seem like a very good company. If you happen to call them tell them that eric from brooklyn refered you.... good luck guys!!!
E! |
Ricardo E.
Advanced Member
Username: ricardomarine_vp
Post Number: 757
Registered: 03-2009
| | Posted on Sunday, November 08, 2009 - 08:42 am: |
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I realize this thread is a month old.
Just an FYI.... a difference that some do not often consider is the type of pump shaft seal for "raw water cooled" vs a "Closed Cooling" system (Ethylene Glycol solution).
The Raw Water seal is of a different type, whereas the pump to be used in a Closed Cooling system relies on the E/G for partial lubrication of the shaft seals.
Then consider the bronze impeller and SS back cover vs the non!
As for reverse rotation.... I'd agree with Bruce...... although the impeller on the pump does not care which direction it is being turned..... (it is a "centrifugal" pump)...... but some of the internal porting on the suction side may be different.
Notice the different shape of the housing on this "Bi-Directional" Circ Pump..... and notice the sightly different location of the STBD side WH/Cabin Heater return port:
http://www.shipstore.com/SS/HTML/SIE/SIE3574.html
Here's one that is claimed to be "Bi-Directional" but looks similar to the std rotation pump:
http://www.masonmarine.net/mercruiser-water-circulating-pump-volvo-p-663.html
Notice the shape of the housing on this standard rotation marine engine Circ Pump;
http://cgi.ebay.com/ebaymotors/Marine-Water-Pump-Small-Block-GM,Mercruiser,OMC,V olvo_W0QQitemZ370240848234QQcmdZViewItem?rvr_id=&itemid=370240848234
Best to use the Counter Rotation pump if there is a question.
And why do these guy's pictures often show these pumps up-side-down? 
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