BBC steams after running
08-25-2019 | 06:49 PM
#1
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Joined: Sep 2016
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From: Waterford, Michigan
BBC steams after running
Hi - I have just finished a BBC rebuild....runs great...increased CR, cam and bored...OE heads cleaned up and am running standard Mercruiser exhaust.....after running higher speeds (~above 4000), I noticed when I go back to idle I have light steam....especially out of the port bank, some on starboard side....the motor runs and idles fantastic....suspect water restriction somewhere. Should I change the manifold/riser gasket bleed hole, or is that business as usual for BBC?
Thank you for your feedback!
Thank you for your feedback!
08-25-2019 | 09:24 PM
#4
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Posts: 6,018
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From: Grand Rapids, MI
Do your due diligence and make sure there is not an issue.
There's a few threads in this search.
https://www.offshoreonly.com/forums/...archid=1315866
There's a few threads in this search.
https://www.offshoreonly.com/forums/...archid=1315866
08-26-2019 | 09:24 AM
#5
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Posts: 190
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From: Waterford, Michigan
Rookie- for some reason the link did not work. Would you mind reposting?
Im not sure what else I can do but watch temps. The engine comes down just fine to an idle...
thank you for the input!
Im not sure what else I can do but watch temps. The engine comes down just fine to an idle...
thank you for the input!
08-26-2019 | 12:10 PM
#8
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08-26-2019 | 12:11 PM
#9
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From: Cleveland, Ohio
I noticed steam for the first time coming out of the breathers this weekend. This was after firing up the boat and running it a few miles at 4200 RPM? It has been a little cooler up here, popped the hatch right after coming off plane, a little steam coming out. Everything looks great, no changes in the boat besides the weather outside. I chalked it up to cooler water / air temps. Boat sure ran good!
