Re: MF35 tractor with Chevy 6.2 diesel and Olds D

Posted by B-maniac on November 02, 2006 at 19:36:56 from (207.241.134.62):

In Reply to: Re: MF35 tractor with Chevy 6.2 diesel and Olds D posted by John in Ct on November 02, 2006 at 13:19:21:

The factory gov. ret. rings were a little suspect,but in my experience it was the junk head bolts that when weakened through hundreds of heat cycles,would either pop their heads off or just plain give up on their clamping torque and good bye head gasket seal. Heaven forbid anyone put a blower or turbo on one! wouldn't last 10,000 mi. This head bolt failure was also a big problem on anything with alum. heads for the first 10 or 15 yrs they used them. Alum. expands and contracts more and quicker than iron,and put more stretch and fatigue on the "stock" head bolts than they were ever intended to see,and they just give up. The shops used to tell customers that the head was warped or cracked and sell them a new head.If it was warped, it was because the head bolts gave up and let the gasket blow and the customer overheated the engine. If you don't overheat it,you will find that the head isn't cracked,isn't warped and a new gasket AND new bolts is all it really needs. Check the NEW bolts also,had some from Dana Corp that were warped so bad they would barely slide down through the head holes. Went back to Car-Quest and 50% of all the bolts in their stock were warped too. Went elsewhere.

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