Rocker oiling on Indy 360-2 cylinder heads

Posted By: mshred

Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 03:41 AM

Hey guys,

So I was assembling my Indy 360-2 cylinder heads tonight and for the first time, I noticed that it looks like the rocker shafts (I am using TD rockers that oil through the shafts) get their oil through 2 pedestals on the heads. Those two pedestals get pressurized oil from the hole where the head bolts go through the heads.

I put an ARP head stud that I will be using through the head bolt holes to see how much clearance there is around the stud and I am wondering now if this is ok? Seems as though there is some clearance, but only a very thin amount...Do I need special studs for this application? As far as I know, these studs were for these heads specifically.

I am just concerned about how these rockers are going to get oil, and if the amount passing through to them will be sufficient.

Thanks!

Posted By: cj391

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 03:50 AM

you'll be good. I had the same concern with my w2's, put it together and it oiled fine.

Posted By: mshred

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 03:58 AM

Quote:

you'll be good. I had the same concern with my w2's, put it together and it oiled fine.

My current RHS heads could be exactly the same, but I can't remember right now to be honest as they are on the car and it is in storage

Posted By: D-50

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 04:44 AM

I am running the 360-2 also but I am using the ARP head bolts instead of the studs. I have had no issues so far.I am also oiling through the push rods.

Posted By: Scamp408

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 11:32 AM

Have the arp stud thinned out alittle in the middle by a machine shop.Also ck the shaft stud.

Posted By: 1967dartgt

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 01:20 PM

I just ran arp studs with no problems.

Posted By: StrokerDart

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 04:19 PM

Good catch !

I definitely had problems with the studs blocking off oil on my 360-2's (with T&D's same as you).... smoked a few pushrod tips before I figured it out with RyanJ's help. He seemed to be well aware of this being an issue with the Indy head.
Since the motor was assembled he suggested an easy at home fix of grinding a flat on the stud to line up with the oiling passage holes inside the head bolt hole/tubes.... Thinning the stud in that area would have worked too. Both of those solutions seemed to me would weaken those two studs and reduce their clamping effect. So, rather than that, for the short term I substituted an ARP (necked down) bolt in the two locations that needed it. Next time the heads were off I had my machinist mill a tiny trough to connect the two oiling holes inside the bolt hole/tubes and I was able to use the intact studs after that.

Sounds like some people have been ok ... might make a difference if you have full time oiling on the cam journals ? I did not. Or maybe the newer heads have a larger bolt hole. I know with W2's I had no trouble but the bolt hole size could have been bigger... I suppose one could also open up those two bolt holes to the next drill size but that might be a bit more of a risk ?
Anyway, just my experience. Hope this helps.

Posted By: CompWedgeEngines

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 04:30 PM

Quote:

Have the arp stud thinned out alittle in the middle by a machine shop.Also ck the shaft stud.

Doesnt need to be ground in half, but look at the rocker studs that came with your T&D rockers, you will see how they are ground in the center. Do the same with the 2 head studs, and you should have no issues whatsoever.

Posted By: mshred

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 08:32 PM

I am glad I asked this question and caught this before bolting the heads on! I will take a look at the rocker studs and do the same to the head studs.

Pays to look over the finer details

Posted By: MR_P_BODY

Re: Rocker oiling on Indy 360-2 cylinder heads - 04/04/14 08:37 PM

Quote:

I am glad I asked this question and caught this before bolting the heads on! I will take a look at the rocker studs and do the same to the head studs.

Pays to look over the finer details

Measure the studs and measure the holes in the heads..
your head studs being a larger dia(1/2") might have
plenty of clearance since your playing with a larger
dia which is more area