Roller Rockers?

titanium92 · 07-29-2004, 11:53 AM

Yes it's me again the newbie with a thousand questions...lol. What are the advantages of the 1.6 or 1.7 RR's over stock, and do you get any kind of performance boost?

1989GT · 07-29-2004, 12:02 PM

Well the stock rocker arms are stamped...so a roller rocker is far superior to that. The bearings and the whole design is much better. I don't know if you'll get any performance gain from switching to 1.6rr. Besides the benifits of reduced friction and all that good stuff. But the increased ratio of a 1.7 with give you some additional lift.
-Ryan

titanium92 · 07-29-2004, 12:07 PM

Thanks for the quick reply, still don't know some of your terminology though...lol....what you mean by more lift? Also by changing to 1.7rr's do I have to change cam or anything other than stock?

1989GT · 07-29-2004, 12:45 PM

Roller rockers multiply the lift from the cam lobe. So you have a cam, then roller lifters which roll on the cam lobe. The roller lifters push a push rod that pushes the roller rocker. Which it turn opens and closes the valves. So if you want to change your rocker arms you do not need to change the cam. Rocker arms multiply lift from the cam lobe like I said earlier so if you have a cam with say .300" cam lobe lift times 1.6 that would give you .480" of valve lift. Now say you put a 1.7 rr on that would give you .510" of valve lift. Hope this makes sense.
-Ryan
Fogot to add that 1.6 and 1.7 is the rr ratio. Which means that it is 1.6:1 or 1.7:1, 1 being the cam lobe. So 1.6 or 1.7 times the cam lobe.

rwhite65 · 07-29-2004, 01:15 PM

yes u can run the 1.6 roller rockers or the 1.7's with a stock engine. They would be an improvement over stock.
Ryan

88fivepointoh · 07-29-2004, 02:31 PM

I RAN 1.6'S FORD RACING ROLLERS AND IT WAS A NICE IMPROVEMENT. MUCH QUITER VALVETRAIN, AND RPM PERFORMANCE. ROLLER ROCKERS ARE GREAT FOR ANY APPLICATION STOCK OR NOT.

Rev · 07-29-2004, 05:03 PM

One more advantage to RR's is that they are more accurate in the ratio that is actually provided. Stock stamped rockers are made to looser tolerances than the more expensive RR's so when you buy 1.6 or 1.7 RR's, that's pretty much what you will get with not much variation between cyliders.

Rev

titanium92 · 07-30-2004, 12:03 AM

Thanks guys that was awesome responses, answered all my questions to the T and very well explained.

titanium92 · 07-30-2004, 12:06 AM

Oh yeah guess the only thing left is how do I install them....lol. Sorry just a quick question, I don't have to take heads off to change them do I? Just the valve covers right? And is it a hard job to change them?

Thanks in advance.

07-29-2004, 11:53 AM	#1
titanium92 Registered Member Join Date: Jul 2004 Posts: 38	Roller Rockers? Yes it's me again the newbie with a thousand questions...lol. What are the advantages of the 1.6 or 1.7 RR's over stock, and do you get any kind of performance boost?

07-29-2004, 12:02 PM	#2
1989GT Registered Member Join Date: Apr 1999 Location: Cincinnati,OH Posts: 1,511	Well the stock rocker arms are stamped...so a roller rocker is far superior to that. The bearings and the whole design is much better. I don't know if you'll get any performance gain from switching to 1.6rr. Besides the benifits of reduced friction and all that good stuff. But the increased ratio of a 1.7 with give you some additional lift. -Ryan __________________ 89GT,Pro-Bullet 306, H/C/I and a bunch of other stuff. Sold 00GT, Vortech S-Trim, Steeda Boost Pipe, C&L intake, Mac off-road H-pipe, Flowmasters, B&M Ripper shifter, Eibach Sportline springs, Koni Struts/shocks, MM full length subframe connectors, Cobra brakes, 3.73's. My Car Domain Page

07-29-2004, 12:45 PM	#4
1989GT Registered Member Join Date: Apr 1999 Location: Cincinnati,OH Posts: 1,511	Roller rockers multiply the lift from the cam lobe. So you have a cam, then roller lifters which roll on the cam lobe. The roller lifters push a push rod that pushes the roller rocker. Which it turn opens and closes the valves. So if you want to change your rocker arms you do not need to change the cam. Rocker arms multiply lift from the cam lobe like I said earlier so if you have a cam with say .300" cam lobe lift times 1.6 that would give you .480" of valve lift. Now say you put a 1.7 rr on that would give you .510" of valve lift. Hope this makes sense. -Ryan Fogot to add that 1.6 and 1.7 is the rr ratio. Which means that it is 1.6:1 or 1.7:1, 1 being the cam lobe. So 1.6 or 1.7 times the cam lobe. __________________ 89GT,Pro-Bullet 306, H/C/I and a bunch of other stuff. Sold 00GT, Vortech S-Trim, Steeda Boost Pipe, C&L intake, Mac off-road H-pipe, Flowmasters, B&M Ripper shifter, Eibach Sportline springs, Koni Struts/shocks, MM full length subframe connectors, Cobra brakes, 3.73's. My Car Domain Page

07-29-2004, 01:15 PM	#5
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	yes u can run the 1.6 roller rockers or the 1.7's with a stock engine. They would be an improvement over stock. Ryan __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

07-29-2004, 05:03 PM	#7
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	One more advantage One more advantage to RR's is that they are more accurate in the ratio that is actually provided. Stock stamped rockers are made to looser tolerances than the more expensive RR's so when you buy 1.6 or 1.7 RR's, that's pretty much what you will get with not much variation between cyliders. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

07-29-2004, 12:07 PM	#3
titanium92 Registered Member Join Date: Jul 2004 Posts: 38	Thanks for the quick reply, still don't know some of your terminology though...lol....what you mean by more lift? Also by changing to 1.7rr's do I have to change cam or anything other than stock?

07-29-2004, 02:31 PM	#6
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	I RAN 1.6'S FORD RACING ROLLERS AND IT WAS A NICE IMPROVEMENT. MUCH QUITER VALVETRAIN, AND RPM PERFORMANCE. ROLLER ROCKERS ARE GREAT FOR ANY APPLICATION STOCK OR NOT.

07-30-2004, 12:03 AM	#8
titanium92 Registered Member Join Date: Jul 2004 Posts: 38	Thanks guys that was awesome responses, answered all my questions to the T and very well explained.

07-30-2004, 12:06 AM	#9
titanium92 Registered Member Join Date: Jul 2004 Posts: 38	Oh yeah guess the only thing left is how do I install them....lol. Sorry just a quick question, I don't have to take heads off to change them do I? Just the valve covers right? And is it a hard job to change them? Thanks in advance.

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