valves rattling

Old 10-04-2008, 04:15 PM
  #1  
lookingaround
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Default valves rattling

what would cause my valves to rattle? its a 406 dome motor with brodix track1's 645 solid roller cam that was degreed in. 1.5 harland sharp roller rockers msd distributor msd 6al box msd coil 750 aed double pumper. no matter where i move the distributor the valves rattle. will cheap gas cause this? i havent set the timming with a light yet just by ear to get it going. any help would be appreciated. thanks Avery
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Old 10-04-2008, 04:25 PM
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Tod74
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Mild DETONATION MAKES A RATTLE SOUND...spark knock whatever you want to call it.
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Old 10-04-2008, 04:36 PM
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lookingaround
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what causes that? how do i fix it? lol
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Old 10-04-2008, 04:56 PM
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hammertime
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Originally Posted by lookingaround
what causes that? how do i fix it? lol
Lack of octane, I get it once in awhile with 87 octane on the primer plus :lol:
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Old 10-04-2008, 04:57 PM
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lookingaround
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thanks David
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Old 10-04-2008, 04:58 PM
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hammertime
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what fuel you running ?
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Old 10-04-2008, 05:07 PM
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lookingaround
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right now its just 87 octane. i just got it going and that all they had around here. everybody was running out of gas.
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Old 10-04-2008, 06:08 PM
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hammertime
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Id just it up next time should fix it.
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Old 10-04-2008, 07:27 PM
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Originally Posted by lookingaround
right now its just 87 octane. i just got it going and that all they had around here. everybody was running out of gas.
Add a couple bottles of Heet it will raise the octane by 2 to 4 points since it's almost pure alcohol. That will tell you if you have an octane problem.

JMO

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Old 10-04-2008, 07:59 PM
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lookingaround
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where can you get it at zipper?
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