my 472" mopar engines west hemi has smoked a couple of rocker end pushrod cups twice,oiling doesn't seem to be an issue,could my comp cam roller specs be in error for my alum mopar head combo(.026")

smith brothers pushrods sorry lost info on roller tipped rockers,cam and kit all from comp,.692 lift cam,wish i knew all other info,engine buidler happy to take my money!only used car for bracket competition,maybe 30 passes,was happy with 10.60 time with 3600# car.

oiling external from pressure fitting,pushrods solid

I had burnt a couple of exhaust pushrods and adjusters on my 528 Hemi I built a few years ago. I was running a solid lifter cam with dual valve springs and Indy roller rockers. It was evident that the adjuster and pushrod tips were not getting oil. I had Smith Bros send me the same pushrods, only with holes in the tips so the lifters would oil the tips and that solved my problems. I guess if you are running a roller cam you might have excessive spring pressure or a need for a spray bar oiling system. Duster Dave had the specs somewhere on here for the spray oiling system he made.

really appreciate responses,would like to get that spray solution.have checked rocker potential for problem and all looks well,will check seat pressure and quote numbers,maybe someone will know if they are too high!

Were they intake or exhaust?

Same ones each time?

What rockers are you using?

How did the adjusters look and did you replace any of those either time?

exhaust: replaced adjusters and rods,am in dark as to whose rockers they are,only that they look tough and have roller tips!

pair of rods smoked on driver's bank near rear first time,repeat exhaust other bank on second occasion,also second last cylindar at rear,changed adjusters both times ,they were starting to "blue",cup ends pushrods ,Three real blue one shattered

Buy external oiling do you mean the heads are oiled by external lines to the heads instead of up thru the block?

Are you using head studs or bolts?

Suds can sometimes restrict oil flow thru the stand and a external line may have a restrictor in the circuit that you might not be aware of.

Can you get a pic of the rockers and stands?

That may help figure out where you are at. Some rockers do have some oiling issues.

You have to really check the fit of the rockers, shafts and stands and there relationship to the oiling hole's - there is sometimes just enough slop or tolerance stackup to cause a partial blockage of some of these holes.

Or if you don't want to get into all of that just prime the oil pump and watch the oiling at each position.

It is very time consuming but you may be suprised at what you find.

dbailey43 here are a few pix of what indy roller rockers look like.

Another pix

Another

my rockers look the identical as your pictures also have same anodized shaft stands,heads are clamped with studs. and ahain thanks

rocker shafts externally oiled thru back of heads,if there is oil flow restrictors in that system where will i locate them?