Project; "BEATERBIRD"

[MadcowUSMC]

Machining tolerances can vary on two identical parts made on the same machine. Let's say for example a rifle barrel. In using this because I am mor familiar with them. You would preferably want the first one machined on the tool set. It will have the tightest tolerances. The tool set used to machine the barrels wares after each barrel machined. Some manufacturers don't use a tool set for more than a hundred barrels. Even with this I would still prefer to have the first barrel off the line. Now if you have two different studs from different manufactures and even if they used the exact same tool sets you have no idea where they were in the number of studs made. If you get ones from the same manufacturer those 16 in the package should of ideally been manufactured one after another. This would give you closer tolerances between the studs.


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[zooguy]

If they are machined different they could have
.05 difference. Did you use the same lifter to measure all of the pushrods?


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i did

[Catmaigne]

Different stud shouldn't matter though. As long as the hex of the stud sits flat against a properly machined guideplate/boss then it won't matter what length it is. Changing the stud length will only move the hex piece in the polylock up or down. I could only see the different stud being an issue if the rocker trunnion is overly loose on it or the base of the stud is different and contacting the rocker body.

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[zooguy]

Different stud shouldn't matter though. As long as the hex of the stud sits flat against a properly machined guideplate/boss then it won't matter what length it is. Changing the stud length will only move the hex piece in the polylock up or down. I could only see the different stud being an issue if the rocker trunnion is overly loose on it or the base of the stud is different and contacting the rocker body.
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thats what i thought

[MadcowUSMC]

It's a good right up.

https://www.airflowresearch.com/car-...4-pushrods.php



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[MadcowUSMC]

Any update? How did the push rods work out?


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[zooguy]

well i found out most of my rocker arms are damaged so i will need a new set

[MadcowUSMC]

That sucks man. What rocker arms are you planing to run with?


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[zooguy]

prolly some 1.6 comp golds roller rockers

[MadcowUSMC]

Keep us updated man. I'm sure I'm not the only one following. Wish I was closer I'd help out man.


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