Posted By: Diplomat360
W2 stroker build - oil through pushrods, or not? - 04/15/22 01:59 PM
I'm to a point now when it's time to order some custom pushrods.
BUT...there is one final aspect I need to resolve and would like the group's recommendation.
The combo is a 408 stroker, race econo W2 heads, Harland Sharp 1.6 ratio rocker arms. So these are the roller rockers (nose and the shaft) and per their specs they recommend restricting the oil feed to the shafts. Cam and lifter is a hydraulic roller setup, Comp Cams.
I have not restricted the oil yet, however I made a provision in the heads theselves to do so by threading the oil feed passage so that an adjustable orifice plug can be installed afterwards w/o having to pull the heads and rely on the block version of this adjustment.
Alright, all good so far.
Now I need to decide whether I should order the oil through pushrods. My thinking is that if I do in fact restrict the oil feed to the rockers (no plans to start off with, but if I find that I need to do so I still need to bring some oil up to the rocker arm - pushrod interface where the rocker arm adjuster meets the pushrod cup).
On the surface this wouldn't seem to hurt anything, heck, more oil at the highly stressed (friction) areas is a good thing. But is there anything else that I'm overlooking here?
I do realize this is basically a controlled "oil leak" situation, but this being a street engine with majority use being wide RPM range, I do not think that is an issue (I am using a bigger oil pan with a high volume pump).
Yey or nay?
Thanks everyone!
BUT...there is one final aspect I need to resolve and would like the group's recommendation.
The combo is a 408 stroker, race econo W2 heads, Harland Sharp 1.6 ratio rocker arms. So these are the roller rockers (nose and the shaft) and per their specs they recommend restricting the oil feed to the shafts. Cam and lifter is a hydraulic roller setup, Comp Cams.
I have not restricted the oil yet, however I made a provision in the heads theselves to do so by threading the oil feed passage so that an adjustable orifice plug can be installed afterwards w/o having to pull the heads and rely on the block version of this adjustment.
Alright, all good so far.
Now I need to decide whether I should order the oil through pushrods. My thinking is that if I do in fact restrict the oil feed to the rockers (no plans to start off with, but if I find that I need to do so I still need to bring some oil up to the rocker arm - pushrod interface where the rocker arm adjuster meets the pushrod cup).
On the surface this wouldn't seem to hurt anything, heck, more oil at the highly stressed (friction) areas is a good thing. But is there anything else that I'm overlooking here?
I do realize this is basically a controlled "oil leak" situation, but this being a street engine with majority use being wide RPM range, I do not think that is an issue (I am using a bigger oil pan with a high volume pump).
Yey or nay?
Thanks everyone!