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  #21  
Old June 22nd, 2005, 02:58 PM
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Chris Davis
94 NAS D90 6.2LS
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I will snap a pic and post it. Did you use a keeper at all?
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  #22  
Old June 22nd, 2005, 03:32 PM
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Robert Dassler
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Chris,
No, the early engines with the external oil pump did not need a keeper...the pressure from the oil pump drive through the distributor gear was sufficient to keep the camshaft lightly pressed against the engine block. The cam retainer was introduced with the crankshaft driven oil pump as it is required to keep the cam in contact with the front face of the engine block. There were 2 styles, the crescent shaped one and the full circle style that bolt on over the machined lip on the cam nose to keep it in place. I have a 900531 here in the scrap pile (oil pump quit, lost 2 lobes and cam bearings, hence the rebuild) and it is not machined to take a cam retainer. That's why I'm curious as to how you were able to use the retainer. Rob
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  #23  
Old June 22nd, 2005, 05:07 PM
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Chris Davis
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I had a buddy at a machine shop mill the cam to accept the retainer (cressent shape). I can only work on the truck about an hour at a time right now, so the next step is to take off the top end of the engine and remove the lifters--then I can play with the cam and figure out what is up. What I think is up from looking at it is that the retainer is keeping the cam too far into the engine.
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  #24  
Old June 23rd, 2005, 05:06 PM
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Chris Davis
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My Crower cam just arrived and there is an expanded flange at the end where the timing gear goes on that keeps the cam from going in too far into the engine. This was either missing or was milled off on the Crane cam and that is what caused all my issues. Few hundred bucks down the drain.
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  #25  
Old June 23rd, 2005, 05:55 PM
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Stephen Whitaker
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I hate it when that happens! Good luck on the new cam.
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  #26  
Old June 24th, 2005, 04:27 PM
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Chris Davis
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Everything is back together with the Crower cam and purring like a kitten! Well, make that a Tiger!
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