Re: [HSS] 1927 Hudson (Early F-Head Engine) Water Jacket

Unknown

They are casting holes, that need to be blocked off with discs or frost

plugs, otherwise all the coolant goes hosing through these instead of

through the smaller holes around the valves and cylinders - a common cause

of overheating and blowing water out if these holes are not blocked.

Geoff.

----- Original Message -----

From: "okgat" <okgat@hughes.net>

To: <HudsonSuperSix16-29@yahoogroups.com>

Sent: Monday, May 01, 2006 5:56 PM

Subject: [HSS] 1927 Hudson (Early F-Head Engine) Water Jacket





> Hi All,

>

> After removing the head, we are in the process of cleaning the intake

> valves and head. We had planned on removing and examining the exhaust

> valves next.

>

> In looking down at the top end where the pistons are held, I saw two

> round holes about 1" in diameter spaced approximately one foot from

> each other.

>

> When we first took the head off, one hole was almost full of rusted

> debris. The second hole was completely closed off and upon scrapping

> the hole, the debris came out.

>

> Quesiton:

>

> 1. Are these two 1" holes suppose to be freeze plugs or? (Or are

> they just closed off water jacket holes that help cool the head.)

>

> Thank you,

>

> Rick.

>

>

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