External water hoses on F1 engines

[powerabout]

Guys

I have noticed F1 engines these days put a fitting in the top of the block and run 2 hoses down into each head between 3-5 and 4-6
Is this to try to dump any air out to get a solid water flow around the cylinders ( without dropping pressure) or add a bit of cool water over 5 and 6? ( with air in it or both)

Thanks

( yes I might be going to dark side in a carby 2.5 steel sleeve on a one piece, tunnel boat)

[tlwjkw]

nice cool water flow .........

[powerabout]

nice cool water flow .........

So which of my guesses was on the money?

[John S]

Guys

I have noticed F1 engines these days put a fitting in the top of the block and run 2 hoses down into each head between 3-5 and 4-6
Is this to try to dump any air out to get a solid water flow around the cylinders ( without dropping pressure) or add a bit of cool water over 5 and 6? ( with air in it or both)

Thanks

( yes I might be going to dark side in a carby 2.5 steel sleeve on a one piece, tunnel boat)

Pics of this boat? Sounds cool.

[powerabout]

Pics of this boat? Sounds cool.

Just a collection of ex f1 and f2 tunnel boats with large gearbox pretty close to Texas F1 powerheads.
https://www.youtube.com/watch?v=rVKUqWVvxCE

[tlwjkw]

So which of my guesses was on the money?

usually anything comin' from top of block is gonna have minute bit of air in it........

[BUZZIN' DOZEN]

[powerabout]

Thats it, what do they do, what issue did they fix?
Was it just to vent air out of the water?

[tlwjkw]

want you ta think about this... how/where could it purge any excess air?

[powerabout]

want you ta think about this... how/where could it purge any excess air?

Air in the ex trunk is removed from the highest point before it gets to the cylinders and dumped over the bottom 2 in the head
(probably should be lower down like the adapter plate?)

[tlwjkw]

right... right back into tha system............ 'bout only way air can be purged is thru tha adapter plate...

thats tha reason a hose was added down to tha poppit with tha production motors in '89.. they figured it out when tha water cooled rec/reg was over heating due ta air pockets....... worked well enough ta keep it after tha water cooled stuff went away..........

those two hoses are just for "extra coolin' water" to tha motor....

[powerabout]

right... right back into tha system............ 'bout only way air can be purged is thru tha adapter plate...

Without losing pressure that is....

[tlwjkw]

"calf rope"

[LakeFever]

A manually forced diverted flow. Adds another loop to the hottest parts of the block. Instead of relying on just rubber diverters in the cylinders to surround the cylinders this system pumps in to the center and out the top. The heat will naturally settle in the center of the block anyways so by routing the cooling this way it shoves the heat from the center out. That’s how it looks to me

[powerabout]

"calf rope"

is that Texan for the Aussie "ken oath"?