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Distributer shaft breaking!

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Old 12-10-2007, 01:48 PM
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Distributer shaft breaking!
I have broke two dist. shafts. Anyone know what causes this?? Its in a newly built 351w procomp cam and hei distributor!

Help!!!
 
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  #2  
Old 12-10-2007, 02:31 PM
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Crappy quality shafts.. What oil pump and oil is in the motor?
 
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Old 12-10-2007, 02:54 PM
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are you running the proper dizzy gear in regards to the cam choice either flat tappet or roller. either use a different dizzy gear
 
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Old 12-10-2007, 03:10 PM
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351w 10w-40. motorcraft oil and a Melling Hi volume!
 
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Old 12-10-2007, 03:55 PM
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why are you running a hi volume pump? that is probably whats causing the failure. you need to get a specific dizzy shaft.
 
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Old 12-10-2007, 10:04 PM
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High volume pump and stock shaft = breakage. All books and build ups ive read say the high volume pump is not usually necessary, but always upgrade to the higher quality shaft. Cheap insurance.
 
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Old 12-11-2007, 08:49 AM
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Cam is not stock. It's a 268 Comp Cam. So who all thinks it's the Oil pump???
 
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Old 12-11-2007, 08:49 AM
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Also, what's a dizzy shaft. comp said a brass gear is not nessary
 
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Old 12-11-2007, 10:11 AM
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is it a roller or flat tappet cam?

why are you running a hi volume pump. the only reason for such a need is a motor built with loose tolerances. most builds only need a regular pump.
 
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Old 12-11-2007, 10:13 AM
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Flat tappett
 
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Old 12-11-2007, 11:50 AM
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ok, now why for the hi volume pump? contact the pump manufacturer and see what they recommend for a oil pump drive shaft
 
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Old 12-11-2007, 01:28 PM
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Engine builder thought I needed it! Why, I do not know
 
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Old 12-11-2007, 01:29 PM
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Any one else had this problem. What are your thoughts on the hi vol oil pump? Is that the problem????
 
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Old 12-11-2007, 02:33 PM
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i would take it back to the builder and make them fix it.
 
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Old 12-11-2007, 02:44 PM
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Already tried that once. this is the second time. He is not touching it anymore!
 
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