t-stat housing check balls???/
#1
t-stat housing check balls???/
http://www.mercruiserparts.com/bulle...1999/EN_02.PDF
I know what they are and how they work, but why do some motors have them and some not? Same housing.
Thanks
I know what they are and how they work, but why do some motors have them and some not? Same housing.
Thanks
#4
Re: t-stat housing check balls???/
Thanks.
Will I be able to run w/o the balls until I can get a set ordered? Standard cooling. I'm going to replace my 2 hose MPI housings for this unit this weekend to see if I can get my 50psi WP in check w/o going the relief valve setup. If it works as expect, I'll order the check valve assembly Mon.
Will I be able to run w/o the balls until I can get a set ordered? Standard cooling. I'm going to replace my 2 hose MPI housings for this unit this weekend to see if I can get my 50psi WP in check w/o going the relief valve setup. If it works as expect, I'll order the check valve assembly Mon.
#5
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Re: t-stat housing check balls???/
cant answer that never tried to do her, I mean it, I mean run ..........,
hell you know what I mean, with out balls
Let me Know how YOU make out
hell you know what I mean, with out balls
Let me Know how YOU make out
Last edited by GOODT; 07-12-2006 at 10:36 PM.
#6
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Re: t-stat housing check balls???/
The housing with "balls" is usually for an Alpha drive. They restrict water flow to the exhaust risers at idle. The water pump in the Alpha does not move enough water to cool everything at idle. Without the check balls too much water flows to the exahust causing the engine to overheat.
The Bravo pump moves far more water at idle than the Alpha. That's why the check balls aren't used in that application.
The Bravo pump moves far more water at idle than the Alpha. That's why the check balls aren't used in that application.
#7
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Re: t-stat housing check balls???/
Originally Posted by US1 Fountain
Thanks.
Will I be able to run w/o the balls until I can get a set ordered? Standard cooling. I'm going to replace my 2 hose MPI housings for this unit this weekend to see if I can get my 50psi WP in check w/o going the relief valve setup. If it works as expect, I'll order the check valve assembly Mon.
Will I be able to run w/o the balls until I can get a set ordered? Standard cooling. I'm going to replace my 2 hose MPI housings for this unit this weekend to see if I can get my 50psi WP in check w/o going the relief valve setup. If it works as expect, I'll order the check valve assembly Mon.
May not be an issue.
#8
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Re: t-stat housing check balls???/
You may want to check. I think the thermostat housing was redesigned with a more restictive opening to eliminate the checkballs. I think I remember seeing a TSB regarding this.
Gary
Gary
#9
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Re: t-stat housing check balls???/
Originally Posted by Iggy
The housing with "balls" is usually for an Alpha drive. They restrict water flow to the exhaust risers at idle. The water pump in the Alpha does not move enough water to cool everything at idle. Without the check balls too much water flows to the exahust causing the engine to overheat.
The Bravo pump moves far more water at idle than the Alpha. That's why the check balls aren't used in that application.
The Bravo pump moves far more water at idle than the Alpha. That's why the check balls aren't used in that application.
???
They came on my stock 2002 model 500 EFI's with Bravo XR drives.
#10
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Re: t-stat housing check balls???/