Usually a lubrication problem Most of the time this can be corrected Anti-Gall Rocker Balls with Covers that have "drippers" inside [ like OEM L88 BBC ] Any street engine with a hydraulic cam with mild springs will get no measureable benefit from Roller rockers. Stamped steel rockers in a SBC now have a 60 year history as an OEM part. If you're using a high lift cam and constantly buzzing over 6500 , yes there are advantages in using them [ along with Screw in studs, guide plates, stud girdles, heavier springs, etc etc ]
man oh man........ NO benefit. bold statement... ya left out ----> titanium retainers, 10 degree keepers, and beryllium copper intake and exhaust seats, bronze valve guides, titanium intake valves -n- hollow stem/sodium filled titanium exhaust valves oh brother... i do be leave i do be leave i do ido i do... and like the SHARK tank *and for that reason i'm out* there's always one jerk in every crowd and it gets a bit sickening to read his post s knowing full well he's an internet queen , meaning he acts like he knows it all , and thinks we can't see his answers are after the fact , explanation he goes out and internets the info and then tells us all about it like he actually knows something foreigners ,post s crap in 50 times as many places as he can just for post count trying to fool people into thinking he's a/the real deal what a maroon akkakkakk and ontop of all that a thief lowballer wannabe and a fuckincrybabytaboot he is had or will probably turn you in and complain about you/me and get you kicked off booted or banned he's actually that good at suckingup to the right people yep he's the perfect internet dickweed betcha if he reads this old post he'll be foaming at the mouth doesn't want his reputation hurt well i see hes a phoney as well as others have others have told me to stay clear and i found out the hard way as i fell victim to his BS
I guess you do not follow threads very well. If you go back to the beginning you'll see clearly I'm talking about a single product the OP is asking about. But I guess I need to put down my whole case history. Did I pre-lube said rocker's per OP type ?, Yes. Was there amble oiling above ?, Yes. Did my previous rockers before installing rocker's in question in this thread give me like problems ?, No. Did I say the same thing as you did in your second to last sentance ?, "Stamped steel rockers in a SBC now have a 60 year history as an OEM part.", Yes. Shall I continue or is this picking fly-sh*t out of the pepper done ?
Correct valvetrain geometry reduces valve guide wear, not roller tip rockers in and of themselves. However, in my efforts to make clear that the non-roller trunion rockers with roller tips are a complete waste of money, I have posted some information here that is incomplete, or if taken out of context, misleading, and its been bothering me while I was out running errands all afternoon, and requires clarification. In applications with a very aggressive lobe, with a lot of lift, it can be impossible to arrive at the narrow tracking pattern on the valvestem tip that I alluded to earlier with non-roller tip rockers. However, ball and trunion rockers of any sort will not survive with the valve spring pressures needed to control the valve with a lobe of this sort as it returns to the seat, so the question is moot. Neither the stock rocker or comp crap roller tip ball trunion rockers will work in this application, both rockers will fail at the trunion. So, to sum up, any combination that has aggressive enough valve action to require a roller tip will also require a roller trunion. The original point stands, the cast ball trunion rockers are nothing but a Hollywood romance gimmick. Theres guys here that own those rockers that aren't gonna like that, and they are gonna argue the point till they are blue in the face. My guess is, a lot of those same guys probably have those K&N Extreme filter tops, and you sure as hell don't want to hear what I think of those.
Johnny Gee, I wouldn't lose any sleep over this. A lot of guys have bought this rubbish because of the way Emap publications shill any crap that comp turns out, so they have a vested interest(they don't want to accept that they wasted their money on this crap) in arguing the point. The same thing happened on speedtalk when some guys on there did non-emap funded dyno tests on the K&N extreme tops and posted their findings on the forum. I sure as hell aint gonna lose any sleep over it.
Actually I consider titanium retainers to be a big benefit on hot flat tappet street motors, assuming that you back the spring pressure off as well. Ball trunion roller tip rockers? The only thing they benefit is your ego. Sorry I got involved in this.
Kind of surprised to read that several people have had problems with the roller tip rockers, I have used them on some chevy's but mostly Fords where the stock cast iron non rail rockers cost about $10 each. I may have been lucky so far , seems there are some real quality control issues with the aftermarket parts.
I run a relatively stock 350 sbc, mild dual-pattern Comp Cam, performance aluminum intake, Holley 4bbl, balanced etc. I added screw-in studs, a set of the good Crane gold full roller rockers, and new OEM push-rods. My purpose was a bit of temperature reduction from the roller trunions, any other benefits were just a bonus. Engine is very smooth, doesn't overheat and produces good power for the money invested. I can't prove that the roller rockers added anything to the equation but I'm happy with my choice.
I have used them twice over the years. Both occasions when I was building motors for guys that insisted they wanted them. They didn't give any problems, but then if they had been applications where I wouldn't have used stock rockers, I would have told them to either pony up for proper roller rockers, or find someone else to put it together. This was also back 20 yrs ago. In my driver, I run a modern high intensity 244 .347 lobe lift solid lobe with edm lifters and springs that are 135lbs on the seat. I wouldn't consider anything other than full roller rockers. If it was a lazy lobe like a chevy 140 I would back off 25 psi on the seat pressure and run stock rockers. Bet it would be down 25 ft lbs through through the middle.
Well, nothing for me to lose sleep about since I got my Comp roller-tip rockers for free (LOL!!!). I agree about the K&N crap too...
I have seen spintron videos of the roller tip in action on the valve stem tip. The roller tip does not roll across the valve. It skips across. If you have seen this video you know that the roller tip ball trunnion rockers are bullshit. The roller trunnion is where the performance is gained. Pushrod length is correct when a line between the roller tip center and the trunnion bearing center is perpendicular to the valve stem at midlift. This gives the narrowest sweep on the valve tip. Simple and unarguable geometry. It also is not necessary that the sweep be centered on the valve tip. Narrow AND centered is difficult to attain with current aftermarket rockers. If the sweep stays within the middle third of the valve stem, you are good to go. I guarantee that if you center the sweep and have a wide sweep you will wear out the valve guides in a hurry. I know this from personal experience with a set of high dollar Dart heads. Most engines with roller rockers will require a longer than OEM pushrod.
The Jalopy Journal
