Please explain the advantage of a "Water Crossover"
What is the advantage of the water crossover instead of the water pump. I noticed that alot of the HiPer motors do not have a water pumps, just a crossover. In building my 454, HP range should be around 450-500, should I drop the pump and add a crossover? Do I need a different raw water intake, instead of the pick up in the drive? I run mostly at the lake 3500-4500 rpm range. Is the crossover for WOT runs?
Thanks- Chris |
Re: Please explain "Water Crossover"
In most applications it is really just a power/aggravation saver. The water pump does take some horsepower to turn and gives you another rotating part to fail or leak. In very high HP engines the water pump can actually hinder water flow so a crossover is less restrictive. There are also some apps where a crossover will give needed clearance. You can use a drive pickup and the stock raw water pump to do the system.
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Re: Please explain the advantage of a "Water Crossover"
Harden Marine sells a crossover with a idler pulley on it, so stock belt setup can be used. A lot less headaches.
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Re: Please explain the advantage of a "Water Crossover"
Keep your pump. With the crossover you'll have pressure and low temp problems.
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Re: Please explain the advantage of a "Water Crossover"
I ran with the pump for two years and with a crossover and therostat housing kit this past year. Far as i can tell I have lost 20+ pounds weight "merc pump and t-stat housing" probably gained 5+ hp lost to drag. No temp problems at all + it really cleaned up front of engine. I boat on gulf coast in fairly warm water if that is a factor.
Mark |
Re: Please explain the advantage of a "Water Crossover"
Originally Posted by mhawkins48
I ran with the pump for two years and with a crossover and therostat housing kit this past year. Far as i can tell I have lost 20+ pounds weight "merc pump and t-stat housing" probably gained 5+ hp lost to drag. No temp problems at all + it really cleaned up front of engine. I boat on gulf coast in fairly warm water if that is a factor.
Mark Mark |
Re: Please explain the advantage of a "Water Crossover"
What if you have closed cooling. Can you use a crossover pipe???? Looking for all the cheap HP I can Get.
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Re: Please explain the advantage of a "Water Crossover"
Originally Posted by Badtoon
What if you have closed cooling. Can you use a crossover pipe???? Looking for all the cheap HP I can Get.
Mark |
Re: Please explain the advantage of a "Water Crossover"
Not for use with closed cooling. How much horsepower could you possibly put thorough a 3/8" fractional horsepower belt?
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Re: Please explain the advantage of a "Water Crossover"
Originally Posted by BROWNIE
Not for use with closed cooling. How much horsepower could you possibly put thorough a 3/8" fractional horsepower belt?
my guess would be that a properly fitted belt could hold upwards of 40hp. Mark |
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