Have a new set of rocker arms and the oil holes are 3 or for different sizes. Didn't look when I first got them, been to long can't complain now.
Question: do I drill all to match the largest size or order another set and mix and match to get a set the same?
Rocker arm hole size
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Cheap Hobby
Topic author - Posts: 649
- Joined: Tue Apr 22, 2014 12:53 pm
- Location: Central Valley
Rocker arm hole size
79 Cherokee WT QT Golden Eagle white with gold windows "Pigger" only blows hubs the night before a road trip or the clodest night of year. Has only been towed cause of stupid.
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prospector
- Posts: 91
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Re: Rocker arm hole size
Depends on what the largest hole size is. But if it's not too big a hole, I'd drill them all to that size, the biggest risk is reducing oil pressure to other areas of the engine. You want each rocker / pushrod to get the same amount of oil, so uniformity in the size of all oiling orifices in the top end is what you want to shoot for.
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Tatsadasayago
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- Location: Sacramento, CA
Re: Rocker arm hole size
Technically, the holes should be the same or smaller than the one at the end of the pushrod. I prefer having rocker am holes that are the same diameter as the oil inlet hole on the side of the lifter which I recall is .065"
1977 Cherokee Chief - The Blair Jeep Project III
A collection of parts flying in close formation
A collection of parts flying in close formation