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Old 09-05-2010, 01:18 PM
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Lets say 1 cam/timing chain assembly has a plus or minus 1 degree tolerance and the second has the same but 1 is advance 1 degree and the other is retarded 1 degree now you have a 2 degree difference between the 2 cams.

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Old 09-05-2010, 01:48 PM
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Well guys some great news I just got done replacing my brake booster with a new one and I took out my brass fitting in the back of my intake that had my vacuum modulator hooked up to and it must have been sucking in a very small amount of air even though you could not tell it.

But long story short I plugged it back up and t fitted it into my vacuum advance line hookup and with that change and my new brake booster in I just happened to hook up my vacuum gauge again and now I have an amazing 19 inches of vacuum at idle and a very nice steady needle. Was steady before but was at 15 and that was with vacuum advance and all things hooked up.

Thing still ran just fine before these changes except while driving and slowing down with the brake booster leaking inside idle would pick up just a hair then go back down but all is very good now.
Thanks again.
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Old 09-05-2010, 05:37 PM
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19 " just like you were expect'n ,,,that's plenty good suction at idle, good thread, good digg'n there eric.
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