3406a
I know this is a old engine but I was wondering how reliable they are I recently bought a 81 western star dump with a 3406 that has 341,000 miles and it seems to run just as good as a new one.
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dont know the difference between the A and B but ifits anything like he "B" motor then it should last a while. got a million 5 on our KW and still running strong with no sighs of giving up any time soon.
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The 3406A/B those were the best of the breed when it came to the 3406 series of motors. I know that I have seen 3406B in the range of 6 million miles on them and the drivers refuse to get rid of them. My father had one that was set up with a 9 over 4.11 rears and the electronic fuel pump set for 400 and hardly ever dropped a gear on climbing west up Snowshoe in PA.
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i agree they were strong engines. |
Some of the A's were known for head gaskets going they seemed to be around the #6 cylinder. If I remember correctly there was a upgrade that involve drill a hole in the deck or head to relieve a steam pocket that could form in the head. This is really old info so I might be off a little I think the back piston was more prone to scuff than the rest too. Bob I know 2 guys that have C's with no electronic's on them so maybe they had an early C and a late one? their's are a 93 and a 94 Both of them say the C is the best of that style of CAT motor.
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when engines overheat, they often damage the most rearward cylinder first, due to the fact that it is furthest from the radiator. the problem you speak of does sound familiar. |
Yes there was an early non-PEEC C model and the later PEEC one. From what I understand the non-PEEC was somewhat rarer, but highly desirable because of all the other internal mechanical upgrades over the A and B engines. And get this, they were available until 96 or 97 on special order! If I had known then what I know now I would have bought a dozen trucks with those engines to run until 2015 or whenever they get the rest of this garbage sorted out! ;)
Birken |
This engine smokes a little when first started but clears up within a couple of minutes there's very little blow by and it use's no oil or water could it just be running rich or could there be other problems? I know the fuel has been turned up also what is a pyrometer and what temp should it run at.
Sorry about all the ?'s Im trying to learn as much as possible about this engine. |
A pyrometer is your EGT's Exhaust gas temperature.
Dont know what temp it should run at. |
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