SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: eliminator18 on April 16, 2020, 09:04:38 AM

Title: Cooling line size help
Post by: eliminator18 on April 16, 2020, 09:04:38 AM

Can someone please point me in the right direction as to what size cooling line I would need for 672hp bbc in a 18ft jet with over transom headers? I have -8 an for the headers.

Thanks in advance for the info .




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Title: Re: Cooling line size help
Post by: Grimpala on April 16, 2020, 09:25:37 AM

I don't have anywhere near 675HP, but I'm running -10 on my 454.  -8 to the OT headers.

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Title: Re: Cooling line size help
Post by: eliminator18 on April 16, 2020, 10:02:44 AM

Thanks for the info


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Title: Re: Cooling line size help
Post by: TrollerDave on April 16, 2020, 12:02:40 PM

I have a -10 from the jet that tees to 2 -8 to the front of the motor/water pump inlet. Then 2 -8 from the stat housing, 1 feeds the headers and the other is a dump out the transom. The -8 that feeds the headers goes to the Bassett tee to 2 -8 to the primary tubes.


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