1.6 Roller Rockers?
Racer
Joined: Aug 2004
Posts: 377
Likes: 1
From: Redmond Wa
Originally Posted by silver84
In a traditional rocker, how much
power is lost as friction?
Certain claims, seem exagerated.
power is lost as friction?
Certain claims, seem exagerated.
I can say that prior to installing 1.6 full rollers (folcrums and tips), turniing my L98 over by hand at the crank damper bolt was like turning a screw into concrete. After installation of the rollers, the motor turned over by hand like I had no rocker arms on the motor at all. The motor also climbs the tach much more effortlessly then it used to.
I think full rollers eliminate a big point of internal friction inside the motor.
Safety Car
Joined: Apr 2004
Posts: 4,532
Likes: 7
From: Lahaina Hi
Just my 02.
If you can't afford the pushrods springs and rr 1.6 don't bother the engine.
If you run the rr 1.6 and not the springs, when you over rev the engine
it will tear up the underside of the rr .
I went the cheap route first and ate the roller rockers under the roller.
I went with the bee hive springs ,comp cams mag rr. hardened push rod titanium retainers .
Now I run the motor all day long at 6200 .
You will not believe the power you will pick up when you change the
springs.
It's easy to change just get out the drummel tool and cut the drip rails from the valve cover get 2 vc gaskets,then rope and replace the springs.
It only takes about 4 hours to replace the springs.
If you can't afford the pushrods springs and rr 1.6 don't bother the engine.
If you run the rr 1.6 and not the springs, when you over rev the engine
it will tear up the underside of the rr .
I went the cheap route first and ate the roller rockers under the roller.
I went with the bee hive springs ,comp cams mag rr. hardened push rod titanium retainers .
Now I run the motor all day long at 6200 .
You will not believe the power you will pick up when you change the
springs.
It's easy to change just get out the drummel tool and cut the drip rails from the valve cover get 2 vc gaskets,then rope and replace the springs.
It only takes about 4 hours to replace the springs.
Racer
Joined: Aug 2004
Posts: 377
Likes: 1
From: Redmond Wa
Originally Posted by REDC4CORVETTE
Just my 02.
If you can't afford the pushrods springs and rr 1.6 don't bother the engine.
If you run the rr 1.6 and not the springs, when you over rev the engine
it will tear up the underside of the rr .
I went the cheap route first and ate the roller rockers under the roller.
I went with the bee hive springs ,comp cams mag rr. hardened push rod titanium retainers .
Now I run the motor all day long at 6200 .
You will not believe the power you will pick up when you change the
springs.
It's easy to change just get out the drummel tool and cut the drip rails from the valve cover get 2 vc gaskets,then rope and replace the springs.
It only takes about 4 hours to replace the springs.
If you can't afford the pushrods springs and rr 1.6 don't bother the engine.
If you run the rr 1.6 and not the springs, when you over rev the engine
it will tear up the underside of the rr .
I went the cheap route first and ate the roller rockers under the roller.
I went with the bee hive springs ,comp cams mag rr. hardened push rod titanium retainers .
Now I run the motor all day long at 6200 .
You will not believe the power you will pick up when you change the
springs.
It's easy to change just get out the drummel tool and cut the drip rails from the valve cover get 2 vc gaskets,then rope and replace the springs.
It only takes about 4 hours to replace the springs.
I put in LT4 springs, retainers and new pushrods. You should do the springs and the rods (as well as vlave stem seals) or don't waste your time.
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 937
Likes: 0
From: Bedford Tx
Originally Posted by silver84
In a traditional rocker, how much
power is lost as friction?
Certain claims, seem exagerated.
power is lost as friction?
Certain claims, seem exagerated.
Perhaps someone who knows what they are doing,
could do a calculation. What is the coeficient of
sliding friction, oiled steel on steel?
Keep in mind, that total friction hoursepower, is something like 50 hp, at high rpm.
In technical discussions, I just don't see
rocker fulcrum friction discussed......
except by people selling fancy rockers.
