Roller Rockers in Stock

Alan Roehrich · 05-28-2008, 09:56 AM

One more question. Who are we going to get to police the trick custom roller rockers that have the pushrod cup and the roller tip moved around in relation to the fulcrum? Got any idea what kind of games you can play by altering that relationship? Do those of you campaigning for roller rockers realize that rocker arms are NOT constant ratio?

Okay, so that was more than one question. And yes, I know that NHRA can easily check for maximum lift. But how often do you see them do that? Besides, it's not more maximum lift you get by playing with the relationship between the pushrod cup, the fulcrum, and the roller tip. It's the ratio on either side of maximum lift. You can radically alter the lift curve. It's easy for the shaft rocker guys to experiment with and play with, just shim the stands, or shorten or lengthen the pushrod, and then plot the lift curve again. Go ahead, see what happens.

Oh yeah, how many sets of trick rockers do you want to buy, and how many trick cams do you want to try to take advantage of them? Think about THAT before you decide how much cheaper and easier you think roller rockers will make things.

SSDiv6 · 05-28-2008, 12:13 PM

Quote:

Originally Posted by Alan Roehrich

It's easy for the shaft rocker guys to experiment with and play with, just shim the stands, or shorten or lengthen the pushrod, and then plot the lift curve again. Go ahead, see what happens.

Alan...the Ford and Mopar guys have been doing this for years with the ductile iron adjustable rockers. Also, it is legal to shim the stands, lengthen/shorten psuhrods or use adjustable pushrods.

Trick cams? There are many already using the larger core cams, needle/roller cam bearings and switched firing orders.

Alan Roehrich · 05-28-2008, 01:16 PM

Quote:

Originally Posted by SSDiv6

Alan...the Ford and Mopar guys have been doing this for years with the ductile iron adjustable rockers. Also, it is legal to shim the stands, lengthen/shorten psuhrods or use adjustable pushrods.

Trick cams? There are many already using the larger core cams, needle/roller cam bearings and switched firing orders.

Believe me, I know that already. Yes, it is legal. I'm not arguing that point at all.

I know about the big core cams, trick bearings, and firing order swaps. I'm not arguing that point either. That's not what I mean by trick cams.

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05-28-2008, 09:56 AM	#1
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,126 Likes: 1,583 Liked 1,893 Times in 423 Posts	Re: Roller Rockers in Stock One more question. Who are we going to get to police the trick custom roller rockers that have the pushrod cup and the roller tip moved around in relation to the fulcrum? Got any idea what kind of games you can play by altering that relationship? Do those of you campaigning for roller rockers realize that rocker arms are NOT constant ratio? Okay, so that was more than one question. And yes, I know that NHRA can easily check for maximum lift. But how often do you see them do that? Besides, it's not more maximum lift you get by playing with the relationship between the pushrod cup, the fulcrum, and the roller tip. It's the ratio on either side of maximum lift. You can radically alter the lift curve. It's easy for the shaft rocker guys to experiment with and play with, just shim the stands, or shorten or lengthen the pushrod, and then plot the lift curve again. Go ahead, see what happens. Oh yeah, how many sets of trick rockers do you want to buy, and how many trick cams do you want to try to take advantage of them? Think about THAT before you decide how much cheaper and easier you think roller rockers will make things. __________________ Alan Roehrich 212A G/S