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leadfootracin

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Posts posted by leadfootracin

  1. check this out, http://people.msoe.edu/~yoderw/oilfilterstudy/oilfilterstudy.html

    we race a late model stock car in the northwest, year before last we had a lot of cam failures, I started checking out engine oils and filters, i didnt get to far on filters but this is one of the sites i saved, as far as oil i found that the manufactures have taken zinc out of moter oil. zinc is a extreme pressure lubricent, designed for metal to metal contact, IE breaking in a camshaft, from what I understand the epa was concerned that an engine that burns oil will screw up the cat converter with the zinc, at work i have saved the oil study and will post the link tomarow. JR

  2. Nipper,

    Thank you kindly.

    Jude

    vacum test at a machine shop means that they have a device with a foam pad that pulls a vacum, you place it over each port, intake or exhaust, and pull a vacum, if it dosnt hold than that means that valve is leaking, needs a valve job, seats ground and valves refaced, sometimes valves will burn and need to be replaced or seats will need to be replaced,rarely the head will have a prob like electrolisis and cannot be repaired, machine shops will usuily pressure test 1st to look for cracks and then vacum test to check valve condtion
  3. I repaired a 91 awd for binding, had a code for duty c sol, sol ohmed ok installed fuse no fix, checked pinouts at trans ecu no power to sol, replaced trans comp, all good. side note, this car was bought used and the prev owner had driven or towed this car in that condtion for so long that the rear diff had exploded and cought fire, scorch marks on the rear bumper should have been a clue. I reaplaced rear diff, mounting bushings, and fuel lines, car runs/drives awesome

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