Info needed on 3406 b/"c" ser 3zj40585/ ar# 6I3474 - TheDieselGarage.com
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post #1 of 48 (permalink) Old 07-08-2016, 09:06 PM Thread Starter
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Info needed on 3406 b/"c" ser 3zj40585/ ar# 6I3474

Thanks to all in advance.
I'm rebuilding the following. ser 3ZJ40585 / arr 6I3474. Old piston #101-0016, Cyl head round ports, Exh manifold square (B style). New turbo OR6689. What can I do to make this engine come alive internally. Need piston # preferably lower comp than this 16:4.1 that are all cracked. Injectors #. Trying to make the old cat purr.
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post #2 of 48 (permalink) Old 07-11-2016, 11:55 AM
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Be sure to replace the cam followers, if they are the old style.(3406B style) Also replace the lifter anti-rotation clips, with the new style!
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post #3 of 48 (permalink) Old 07-11-2016, 12:11 PM Thread Starter
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(Cam followers) I'm guessing you mean lifters.II'll check them. Is there a difference between the old and newer style? Thank you
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post #4 of 48 (permalink) Old 07-11-2016, 06:02 PM
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Yes, big difference in the lower thrust area of the body, also better oiling to the roller with them. Unless yours are worn just reuse them with the updated clips.

Larry
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post #5 of 48 (permalink) Old 07-11-2016, 06:07 PM Thread Starter
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post #6 of 48 (permalink) Old 07-12-2016, 01:39 AM
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If you reuse them, you are taking a chance on breaking a clip, and the lifter turning in the bore, and wiping out the cam & lifters. The bottom of the lifters wear, and the rub area in the lifter bore in the block both wear, and then the lifter clip groove runs crooked and drags the clip up and down and it can eventually can break. However the new style clips will take a lot more abuse before they break. But I just encountered a new style clip that broke. I sleeve a lot of lifter bores, due to broken clips, due to wear in the lifter bore in the block, and lifter bottom thrust surface wear. I do not recommend using B style lifters over again, but it is up to you, if you want to take the chance.
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post #7 of 48 (permalink) Old 07-12-2016, 01:45 AM
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C style lifters will last a long time, because the added wear surface at the bottom of the lifter runs in virgin metal, that is not worn at all, because the B style lifter did not touch that area.
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post #8 of 48 (permalink) Old 07-12-2016, 02:17 AM
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Are you saying you can put new style lifters on a good used cam?
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post #9 of 48 (permalink) Old 07-12-2016, 07:40 AM
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I didnt see where he said anything about having any problems with his cam!! and as far as their being w C or B lifter thats incorrect! they both came with the same lifters. Their is an updated lifter thats been avalable but it never came in any of them originally and they cost just under $100ea! Dumping almost $1200 bucks on something that isnt broke seems pretty crazy! id definatly remove them and inspect them and replace all the clips but unless they show a bunch of wear on the bottom bore side thrust area which the motor he has with a 7w3798 cam rarely ever has then their is no reason for him to replace them! the older B's with the 3012 cam had much more follower and follower bore problems like your describing because of its more aggresive (faster) profile!

Larry

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post #10 of 48 (permalink) Old 07-12-2016, 10:52 AM Thread Starter
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Thanks cat attack for info. I don't know if you have read the biggining of my post but maybe you can help me as it seems you may have the knowledge I'm looking for. I can't get no help from our local cat dealers down here as far as info. I'm trying to change comp ratio and the matching nozzles for a 3zj40585, keeping every other hard part the same for now just want to do piston ( inframe) any idea? Tried to pm sledman since he has had a proven c model build but he must be out making the $ I'm spending . Trying to stay aluminum if possible but not necessarily.

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