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Old 05-15-2004   #1 (permalink)
sneado is offline Apprentice


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Default 3 Angle Valve Job?

Today one of my neighbors gave me a 68-69 302 block and some heads that he says had a 3 angle valve job done to them when they used to be in his car. I was wondering, what is a 3 angle valve job and what does it do to perform different and does this give more hp?
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Old 05-15-2004   #2 (permalink)
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A three angle valve job will improve air flow over the valves. It does give more hp.
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Old 05-16-2004   #3 (permalink)
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But the third angle wears down faster than the other 2 so after so many miles , your back to a standard valve . Not really worth the money unless it's a race engine imho
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Old 05-16-2004   #4 (permalink)
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About how much more hp does the 3 angle job get over stock?
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Import Driver---Twas last friday night and caught at the light, Was a domestic V8 and no cops in sight, I will try, I will try, I will try with this small motor, To beat this damn Mustang, even with its juiced motor, As the light goes green and I pull like no joke, The Mustang erupts in clouds of tire smoke, Now Smasher, now Rev-ver, now Stroker, now Blitzin, These are the names of my four VTEC pistons, Racing ahead I'm the star of the action, But I know I'm in trouble when V8 gets traction, Grabbing second, I hear the RPM's sing, My mirror is blocked by my shopping kart wing, I now hear the roar of the big monster gaining, All I can do is keep my four-banger straining, In a second, the shock wave hits with a blast, And my stickers go flying now a thing of the past, Don't bother with third, cause now it's too late,
Just try to act cool, like you can even relate, Looking up at the taillights as they get smaller, The driver backs off just to give me a holler, "You can't win them all," he says in fling, "You may not win any, in that silly thing," I smiled and revved as he pulled out of sight, With my new mods tomorrow…it will be a better night.
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Old 05-16-2004   #5 (permalink)
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Quote:
Originally posted by Fordgazm
But the third angle wears down faster than the other 2 so after so many miles , your back to a standard valve . Not really worth the money unless it's a race engine imho
The "angle wears down" due to what?
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Old 05-16-2004   #6 (permalink)
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due to the valve opening and closing .
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Old 05-16-2004   #7 (permalink)
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The only part of the seat that the valve touches is the 45º cut, which is on ALL seats, whether there is one angle or there are three, five, six, eight, etc. angles.
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Old 05-17-2004   #8 (permalink)
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I've done 2 sets of heads with a 3 angle valve job , and it seems to me that the third cut is always worn down after I have taken the heads back apart . Maybe it's just my imagination , but I wont spend the extra money on it again . jmo
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