2nd blown 7.3 question
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Junior User
Joined: Dec 2002
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2nd blown 7.3 question
Just got a call from a friend who has located a 7.3 with 80,000. Says it has a blown head gasket and posible burned ehhaust valve. Not aware that head gaskets were a problem with 7.3's. Are the valve seats replaceable? If I decide to use this as a replacement for my E350 (see prior post) it will make for the easiest job, but before I do, what other things should I check ?
More Turbo
Joined: Nov 2000
Posts: 715
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From: Erie, PA
Not always, but generally if a 7.3 cavitates, it takes the head gasket with it. A USED engine 9 of 10 times generally has falsified mileage. BE CAREFULL.
With only 80k I find it hard to beleive that it has those problems.
With only 80k I find it hard to beleive that it has those problems.
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Junior User
Joined: Dec 2002
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my understanding of 'cavitate' is the injector pump is sucking/pumping air instead of fuel. ??
Obviously I have to rebuild, so now;
what other things should I look for during the rebuild?
who's got the best rebuild manual?
where's a good place for parts?
Obviously I have to rebuild, so now;
what other things should I look for during the rebuild?
who's got the best rebuild manual?
where's a good place for parts?
More Turbo
Joined: Nov 2000
Posts: 715
Likes: 11
From: Erie, PA
Cavitation is when the cylinders get "pinholes" in them allowing coolant to fill the cylinder resulting in nowhere for the coolant to go except to the weakest part; the head gasket or the connecting rod.
This is a result of not using any supplimental coolant additives. I do suggest you read up on this as you will find it very interesting.
This is a result of not using any supplimental coolant additives. I do suggest you read up on this as you will find it very interesting.
Posting Guru
Joined: Oct 2003
Posts: 2,438
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From: Monroe, WA
80K is a prime mileage for a pinholed block. That's how many were on the first one we discovered back in the 90s. I've never had to put headgaskets on a 7.3. Not without doing a total rebuild anyhow.
