water pressure
11-29-2003, 02:58 PM
#3
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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.
11-29-2003, 10:37 PM
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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.
11-30-2003, 11:32 AM
#7
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Go with one of these. this way your sure and you won't have to drill and tap holes
Merc pressure relief
Merc pressure relief
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