pishta
I know I'm right....
Whats the diff between non adjustable and adjustable rocker shafts? barring the banana groove: finish only?
rocker shafts
- Thread starter pishta
- Start date
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MOPAROFFICIAL
Oogliboogli
Oiling holes placed diff and more of them to feed adjuster and load side of rocker, hence oil holes down and toward the spring.
Then there are diff levels of shafts, dependent of rocker style, needle bearing etc..
Then there are diff levels of shafts, dependent of rocker style, needle bearing etc..
rigger3006
Well-Known Member
arent all oil holes down and toward the spring?
Not really. The top 2 shafts are for hydraulics, bottom one is from a 273 with mechanical rockers. The oil holes are located higher up the shaft. This pair only had one set of oiling holes, some had 2? Also, there aren't any notches on the ends of the shaft.
rustycowll69
Well-Known Member
it would seem to me, where the shiny spots are is where the contact pressure is greatest, and that is precisely where the oiling holes should be. Take it from a guy who had an engine trashed by some numbskull dealer mechanic doing warranty work.
Here is a picture of a stock 273 shaft for mechanical flat tappet and adjustable rocker arms. One oil hole and a groove for the load area and a second larger hold for the push rod adjuster (feeds oil down the adjuster into the pushrod cup.
W2 shafts for use on with offset drilled blocks. Three oil holes. Same 2 holes and groove for the load side and pushrod cup as the 273 shaft above as well as a third hole on the valve side to oil the valve stems at higher RPM.
rustycowll69
Well-Known Member
it appears to be a smaller hole for the valve spring/ valve oiling hole, is it smaller? What sizes are all the holes?
MOPAROFFICIAL
Oogliboogli
Solid cam engines....Load side, as I said..."factory" is down toward valve spring with the other hole placed higher on intake side for adjuster oiling.
Throughout the years and manufactures...you'll find them in slightly diff placement...some down and angled toward valve... and that's it....like the MP bushed for over 7000 rpm adjustable rockers like these...
What rocker you're using, now that should be figured in.
Throughout the years and manufactures...you'll find them in slightly diff placement...some down and angled toward valve... and that's it....like the MP bushed for over 7000 rpm adjustable rockers like these...
What rocker you're using, now that should be figured in.
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pishta
I know I'm right....
Good stuff here! Id be running stock 273's w/stock 64 shafts or MP cast AL (Crane Golds...in blue) with some adjustables replacements...Ill need to look at my shafts now....can you mod hydros to work with adjustables with a few well placed holes...since I got a few sets...?
Marcohotrod
Well-Known Member
roller rockers with needle bearings use a hard chromed shaft. and a hole on the bottom and a hole on the top
MOPAROFFICIAL
Oogliboogli
Depends who makes them, look at rocker arms unlimited induction hardened shafts.
There's the accurate answer,for long-term longevity....
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