roller
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Senior User
Joined: Nov 2002
Posts: 316
Likes: 0
From: ca
roller
A friend of mine was planning to install a new cam and he wants to install roller rockers with a hydraulic cam.
will installing a roller rocker without having roller lifters or cams really make a difference?
will installing a roller rocker without having roller lifters or cams really make a difference?
Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
roller
Alot of people do that.
Depending on the style of roller rocker, having a roller in the area of the fulcrum help wear and tear, compared to sliding. And a roller on the tip of the valve helps to pevent less guide wear, less sliding there too.
Been talking to Crower, they now here a roller bearing in the tip of the roller rockers (an option you purchase). Most rollers on the tip is just a roller on a pin.
They have found that under high RPM and big spring pressures the friction of rolling on the pin raised the temp of the valve spring. Their new roller in the tip lets the spring run cooler.
Just my opinion
Depending on the style of roller rocker, having a roller in the area of the fulcrum help wear and tear, compared to sliding. And a roller on the tip of the valve helps to pevent less guide wear, less sliding there too.
Been talking to Crower, they now here a roller bearing in the tip of the roller rockers (an option you purchase). Most rollers on the tip is just a roller on a pin.
They have found that under high RPM and big spring pressures the friction of rolling on the pin raised the temp of the valve spring. Their new roller in the tip lets the spring run cooler.
Just my opinion
Lead Driver
Joined: Nov 2000
Posts: 6,647
Likes: 352
From: Albuquerque
roller
What you should pay close attention too is the rocker to valve stem geometry since you are changing things. That's the area between the tip of the vavle and the rocker tip. Some times a different length push rod is needed with or without roller rockers.
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
roller
You will need to cut 3/4" to 1" out of the length of the stock rod for your engine to provide clearance for the hex nuts and an adjustment range.
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