304 - Bullet Proof?

chopperkarl

New member
Hi, this is my first post on the forum. Hoping someone can help me. I have a 73 Scout II with a 304. I've been chasing an intermittant coolant leak since I bought the truck 5yrs ago. I tracked it back to what apears to be a bullet casing being used as a plug in the front of the engine block. It is a difficult place to reach or photo, but I do have a couple pictures attached. I'd like to fix it right. I need help determining what is supposed to be there and how I can get a new one to replace the bullet. Please see attached pictures. The area you are looking at is on the front of the engine block. When viewing from the front, it is left and down from the water pump, directly behind where the fuel pump mounts to the engine block. The pdf file has a picture with labels. Thank you for any help you can give me. -karl
 

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The shell is plugging a front mounted dip stick hole. More than likely your coolant leak is weepage from the core plug (some say freeze plug) right above it.
 
I'd agree w/gregr, it's most likely the welsh plug. Fortunately for you that one is pretty easy to replace. Plan on pulling the radiator for good access.
 
Thanks guys. I'd never have guessed there was a second location for the dipstick. Does 2nd dip stick have anything to do with the shape of the oil pan (front and back separated by a hump for axle clearance)?

Thanks again
-karl
 
Yes, the front dip stick is for a front sump pan, the Scout II has a rear sump pan with the dip stick built into the side.
 
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