some questions

[whatzap]

I have a 2000 225 efi.
My water preasure is 10 at wot. Is that ok?
What gear ratio do I have or how do I find out?
How often should I change the water pump ( i do notice a decrease in water preasure) Also is that the only thing besides motor height that will affect preasue?
thanks guys!!!!

[OneBadBass]

Someone else will help you more but 10 is to low, from what I know 12 is the lowest you want it to be.

[Largemouthlou]

Minimum water pressure at WOT on a 3 liter is 10 psi, on a 2.5 it is 12..
Pete yours is a 3 liter. Other things that can change water pressure in a bad way is blockage in the water syatem. More set back will let ya run the motor higher due to the ange of spray of the back pf the pad..

http://www.bbcboards.net/zerothread/303474

Gear ratio http://www.bbcboards.net...ethod

Change water pump at least once a yr, lower unit lube a couple times a yr minimum, more if used all yr and a few times a week..

[whatzap]

thanks Lou
where is the best place to order parts online? Is there a better gearcase lube you know of?

[Todd D]

Give Don on the Merc 3.0L board a call he'll get you the parts you need!

[Largemouthlou]

Get what ya need from Don, and all I use is Mercury products