So after 7 years I took my intake manifold off to do a cam swap and found this

[gnfanatic]

I guess my pcv valve is not doing its job. But worries me the most is the gear on the dist. It is a brass gear and it took a beating, dont know why though? Any ideas??

 

[Chuck Leeper]

The gear is most likely bronze. Roller cam?
Hi vol/hi psi oil pump?

 

[earlbrown]

Or the PCV is overwhelmed with a coolant leak into the crankcase.

OR you're just seeing the result of boiling 7 years of sweat at once.

 

[gnfanatic]

oil has no coolant in it ever. bronze gear. roller cam, 40 psi hot at idle. I dont know what type of pump/spring rpe uses. if pvc is overwhelmed what can i do??

 

[broke]

What weight ole you using to get that hot idle pressure?

 

[gnfanatic]

10w 30 always

 

[earlbrown]

oil has no coolant in it ever. bronze gear. roller cam, 40 psi hot at idle. I dont know what type of pump/spring rpe uses. if pvc is overwhelmed what can i do??

It might just be 7 years of sweat then. Haw much did you drive it between the 7 years dormant and pulling the intake?

 

[gnfanatic]

first time pulling intake since engine rebuild. car sits in garage during winter here in NY. maybe 15k miles???

 

[jpwalt1987]

Is it a billet roller cam? Or a ductile roller cam ?


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[gnfanatic]

its the old atr cam, not sure if it is billet.

 

[jpwalt1987]

I had to run an oil line to spray my cam gear on my billet roller cam. There isn't a passage to feed oil to it like the stock cast cams. May want to look at that. Also, is that an aftermarket front cover? Might not be machined just right.


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[novaderrik]

that's what those cam gears are supposed to to- they get worn away instead of the cam. they are sacrificial parts that really wear out fast if you have a high volume oil pump.

 

[gnfanatic]

nova, what about all that bronze going in my motor though?? Not happy about this.

 

[gnfanatic]

I had to run an oil line to spray my cam gear on my billet roller cam. There isn't a passage to feed oil to it like the stock cast cams. May want to look at that. Also, is that an aftermarket front cover? Might not be machined just right.


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I dont even remember where this cover came from. How can I tell???? I would like to add a a oil line like you did but dont know how to go about it. you have any pics??
thanks!

 

[Chuck Leeper]

Courtesy of my "oldtimers disease"
A melonite gear may be a good choice.
http://www.jalopyjournal.com/forum/showthread.php?t=528620

 

[jpwalt1987]

http://www.turbobuick.com/forums/index.php?threads/Distributor-Gear.182964/




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[TurboBuRick]

You defiantly have a coolant leak. Thank your pcv for keeping it out of the oil.

I just switched to composite gear. I have a few hundred miles on it now. I been meaning to pull it out and see if any of wear. Let me get a cup of coffee down and I'll yank it.

For the gears to live the cam needs end play and some type of oil feed. They say .005 - .010 end play. IMO the high side is more forgiving. A small hole can be drilled in one of the oil gallery plugs .020.

 

[TurboBuRick]

I'm shocked to say the least.

 

[Chuck Leeper]

How long between antifreeze changes?

 

[gnfanatic]

You defiantly have a coolant leak. Thank your pcv for keeping it out of the oil.

I just switched to composite gear. I have a few hundred miles on it now. I been meaning to pull it out and see if any of wear. Let me get a cup of coffee down and I'll yank it.

For the gears to live the cam needs end play and some type of oil feed. They say .005 - .010 end play. IMO the high side is more forgiving. A small hole can be drilled in one of the oil gallery plugs .020.

I didnt have coolant going into the oil. Everytime I built boost I would burn it out of the exhuast. #6 plug was wet. That must be condensation , I might not have enough venting or possibly the pcv valve needs to be replaced. May I ask where you bout that gear?? I need one