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00RACER
10-18-2010, 05:57 PM
I need the size of the oil hole in the #1557612 rocker shaft. I have the #1550946 and need to make the hole smaller.
THANKS
PAUL LAUSCH

BobPalma
10-18-2010, 06:54 PM
Paul: See Column Three, Rocker Shafts, on Page 15 of the March 2010 Turning Wheels. BP

00RACER
10-18-2010, 07:23 PM
Thanks Bob. Do you have any suggestions on doing this, as I am sure these are hard to tap.
THANKS AGAIN
PAUL LAUSCH

BobPalma
10-18-2010, 07:54 PM
Thanks Bob. Do you have any suggestions on doing this, as I am sure these are hard to tap.
THANKS AGAIN
PAUL LAUSCH

No, Paul, I don't, I am sorry to say. We'll see if anyone else chimes in. BP

(S)
10-19-2010, 02:23 AM
?

Would'nt it be easier to restrict the passage that feeds it somehow?

I recall another TW article about how the # 1963 Avanti needed this because at max throttle, the valve covers became half full of oil. They drilled the return holes, modified the O press relief valve, and restricted passages somehow. (TW circa 1989)

63larkr1
10-19-2010, 09:59 AM
I used roll pins to make them smaller.
Richard