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Author Topic:   Roller Motors
Dirt Administrator

Total posts: 5556
posted November 17, 2001 02:19 PM UIN: 16262997
How many mod guys are running roller motors in comparison to flat tappets? I am still on flats, just curious. Is it helping you?


Dirt Full Roller

Total posts: 52
posted November 17, 2001 04:04 PM
I ran a roller cam this year and it was much better on the starts and off the corners.

Dirt Forum Racer

Total posts: 85
posted November 17, 2001 05:36 PM
Jammin, my engine designer made me go full roller this coming year he says it will give better throttle response on takeoff and especially coming off the corners

Dirt Freak

Total posts: 298
posted November 17, 2001 07:25 PM
Jammin, we have ran rollers for last 3 yrs here. there is no reasonable claim and i dont think you can compete as well without itit definently makes a difference and i have never had one wear out yet!

Dirt Maniac

Total posts: 138
posted November 18, 2001 01:41 AM UIN: 28276986
I like mine. They last alot longer and you can change them without pulling the intake if you get the lifters with the springs. Plus being able to run a more agressive ramp profile it builds better cylinder pressure.

Dirt Maniac

Total posts: 174
posted November 19, 2001 12:49 PM
There are numerous advantages to rollers as has been mentioned above. Some people that don't fully understand how a roller cam works argue that the benefits are hardly noticable because the friction savings is so insignificant and so on, but the main benefit and very significant difference is the fact that with even the same exact specs and numbers between a flat tappet and a roller, the roller can make more power because of the much more aggressive ramp profile which opens the valve in a hurry and waits longer to close it faster all with the same lift and duration.

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