I wouldnt call myself an expert but I know BBCs quite well.
Every suggestion so far is pretty good.
If I understand you correctly, when you come up to temp you start getting extreme needle swings on the mech temp gauge. Fluid does not change temp that quick. You almost have to have air entering the system somewhere. Assume you have Murphy switch.
At temp, if you have a compression leak (gasket) going to the coolant you should see bubbles in the radiator.
Is your temp gauge in the intake or mid head mounted? in the head is a more consistent reading.
A cavitating water pump impeller can create havoc on your coolant, especially at high rpm. But it can still do it in a low rpm application like your irrigation pump. I would go there first, especially when you say it runs fine with a hollowed out stat.
Have you been running this for a while and this just started happening?
I spent most of my time drag racing BBCs, but they havent changed in a long time. Only difference with drag racing the boom is usually louder and more catastrophic when the engine lets loose.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.