roller motor? - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 05-12-2009, 12:41 PM
American Muscle's Avatar
305 Turbo-Fire 240hp
Last photo:
Join Date: Dec 2008
Location: under the hood
Age: 34
Posts: 625
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
roller motor?

What is a roller motor and whats so special about them. Couple of buddies of mine are claiming to have roller 350 motors. Is there an advantage of roller motors than any other motor

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 05-12-2009, 12:55 PM
Guy Hiltz's Avatar
Last photo:
Join Date: Sep 2005
Location: Nova Scotia Canada
Posts: 1,002
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
It refers to the camshaft,which would be a roller cam,instead of flat tappets,and uses either hydraulic or solid roller lifters.There is less friction,and roller cams can have steeper lobes and can keep the valves open longer.Heres some info from Comp Cams;
I currently run a solid flat tappet cam. Is it worth the investment to upgrade to a solid roller cam?

The simple answer to this question is yes -if its in your budget. Solid roller designs use the latest and most advanced profiles that we offer. Among the benefits are reduced valve train friction, higher engine rpm capability, and use of faster ramp profiles, which generate higher power and torque by snapping the valve open and closed more quickly.

Solid roller camshafts and related component technology has come a long way in the last 10 years. Today, a solid roller setup can be durable and offer incredible performance. COMP Cams offers a high quality, Endure-X lifter which features a tool steel axle, EDM Oil Injection and precision sorted needle bearings. Endure-X lifters are available for a variety of engines with different offsets and lifter body heights.

Heres more info from Isky;

Most racers are aware of the advantages of Roller Lifters. For those who are not, a brief review is in order. Roller Cams & Lifters are employed today in all-out racing engines where valve lift/area requirements preclude the possibility of employing a flat tappet (solid lifter cam). Higher Lift requires higher valve spring loads (pressures) and flat tappet cams can only handle so much. Additionally, increased rates of lift (cam lobe velocity) above .007" per degree for example on an .842" diameter G.M. lifter, would cause the lobe to reach-out over the edge of the lifters' cam face. Consequently, with either too much spring or too high a lift rate, most racers know that extremely radical flat tappet cams will eventually self-destruct.

But, what about Roller Lifters? Are they as indestructible as many believe? How do we prolong the life of their roller bearings in today's modern race only engines? Roller lifters require special care and maintenance if they are to provide good service life. Here are the 4 most important factors you should consider to insure their success.

And heres some more;

Hope this helps.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-12-2009, 06:06 PM
hemi joe's Avatar
loves ex cop cars
Last photo:
Join Date: Apr 2009
Location: west deptford nj
Age: 55
Posts: 366
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks alot it really informed me.hemi joe
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-12-2009, 08:52 PM
fast68's Avatar
likes chevy trucks & boobies
Last photo:
Join Date: Oct 2005
Location: IL
Posts: 1,970
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
roller lifter engines are extremely common these days, most of even the smaller engines now are roller lifter equipped, by pretty much all the manufacturers now.
in stock form.

very any real problems with them

or at least a problem with them is never seen by us at the shop,

they hold up very well, and with high mileage.

roller lifters:

Last edited by fast68; 05-12-2009 at 08:59 PM.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help on a Pontiac 400 dirt track motor ridlenracing Engine 9 06-16-2007 10:26 PM
wiper motor won't run cboy Electrical 14 05-03-2006 09:44 AM
tuning a fuel injected motor novadan Engine 13 03-21-2006 09:21 PM
tuning a fuel injected motor novadan Engine 0 03-18-2006 03:20 PM
motor won't come out.. Trav Engine 42 03-02-2004 07:16 PM

All times are GMT -6. The time now is 04:19 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.