Why Roller Rockers....
Thread Starter
|
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,092
Likes: 7,614
From: Poolville
You know I'm going to have to take a closer look. I currently have everything over to a friends shop in New Jersey so i'm not going to be able to get to it right away but I will take a look at that. You got a good point. Thanks..
Intermediate
Joined: Oct 2018
Posts: 44
Likes: 8
From: Indianapolis
Engine revs faster
If you put roller rockers on any motor it does as stated above let the motor rev faster. But that's not all it does. It reduces parasitic drag. Which is free horse power. "Free being as its HP that's already there - not that rollers tip rockers are free". I PROMISE YOU IT SHOWS ON A DYNO. The other thing mentioned was reduced friction which in turn reduces heat. Now in an air cooled motor that would seem paramount.
I found this out building small block ford and chevy engines. Power adders are great but efficiency breeds HP. More than twice I put an intake or some other part that promised HP and didn't notice gains then removed a component that caused drag and to my surprise I then felt the additional ponies. I also watched a video from S&S on how long it takes for a cold evo to get oil to the rockers. They put die in the oil. Pulled the rocker boxes and used a black light to determine how long before oil hit the rockers. It took almost 2 minutes. I was appalled. I now don't touch the throttle until my bikes has been running a least 2 minutes or is already warm.
I found this out building small block ford and chevy engines. Power adders are great but efficiency breeds HP. More than twice I put an intake or some other part that promised HP and didn't notice gains then removed a component that caused drag and to my surprise I then felt the additional ponies. I also watched a video from S&S on how long it takes for a cold evo to get oil to the rockers. They put die in the oil. Pulled the rocker boxes and used a black light to determine how long before oil hit the rockers. It took almost 2 minutes. I was appalled. I now don't touch the throttle until my bikes has been running a least 2 minutes or is already warm.
Banned
Joined: May 2018
Posts: 4,576
Likes: 978
From: Viet Vet, crossroads
As I side point(s)
If you are going rollers which is over 400 bucks you right as well have a vendor do your rocker
assembly so the geometry is near correct at the same time-same money almost.
2nd point
I have a brand new set of Shovel roller rockers here, 300 bucks OBO
If you are going rollers which is over 400 bucks you right as well have a vendor do your rocker
assembly so the geometry is near correct at the same time-same money almost.
2nd point
I have a brand new set of Shovel roller rockers here, 300 bucks OBO
Thread Starter
|
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,092
Likes: 7,614
From: Poolville
As I side point(s)
If you are going rollers which is over 400 bucks you right as well have a vendor do your rocker
assembly so the geometry is near correct at the same time-same money almost.
2nd point
I have a brand new set of Shovel roller rockers here, 300 bucks OBO
If you are going rollers which is over 400 bucks you right as well have a vendor do your rocker
assembly so the geometry is near correct at the same time-same money almost.
2nd point
I have a brand new set of Shovel roller rockers here, 300 bucks OBO
Banned
Joined: May 2018
Posts: 4,576
Likes: 978
From: Viet Vet, crossroads
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
