Offshoreonly.com - water pressure

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johnnyboatman

11-28-2003 09:08 PM

water pressure

will 1/4 inch holes in a exhaust riser next to the big hole allow a decrease in water pressure. :confused:

carreraboat

11-29-2003 09:09 AM

what are you trying to accomplish? tell us about your setup

johnnyboatman

11-29-2003 02:58 PM

i installed new revolution manifolds, the risers dont have big enough water outlets, the manufacture said to drill 1/4 holes next to there factory outlet to lessen water pressure. it had 15 at wot, now it has over 30wot.

carreraboat

11-29-2003 03:17 PM

if they manufacture is saying to do it go for it they would know better than most

johnnyboatman

11-29-2003 08:44 PM

ttt

CAMS-SHAFT

11-29-2003 10:37 PM

Believe it or not 1/4" hole will help. You will still need to check the water psi after drilling these holes. Ideal block psi is 18-25 psi to much more than that and you will have problems with head gaskets and losing hoses. You can also do a pop-off regulator.

Kanookstr

11-30-2003 11:32 AM

Go with one of these. this way your sure and you won't have to drill and tap holes:)
Merc pressure relief

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