C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

push rods

Thread Tools
 
Search this Thread
 
Old Jan 7, 2005 | 07:57 PM
  #1  
devilfish's Avatar
devilfish
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2000
Posts: 3,010
Likes: 1
From: Sweden/Stockholm
Default push rods

What can happen if you dont run with "perfekt" push rod lenght? What will wear down ?
Reply
Old Jan 7, 2005 | 08:20 PM
  #2  
JackDidley's Avatar
JackDidley
Race Director
20 Year Member
Active Streak: 30 Days
Liked
Loved
 
Joined: Sep 2003
Posts: 16,834
Likes: 337
From: Database Error Indiana
Default

Tips of the valve stem can wear on the edge or if the pushrods are too short rockers will rub the valve keeper.
Reply
Old Jan 7, 2005 | 08:31 PM
  #3  
65Z01's Avatar
65Z01
Team Owner
20 Year Member
 
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Default

If the length is off the rocker will ride more to one side than across the center of the valve stem tip. This can cause excessive side thrust which can wear the valve guides.
Reply
Old Jan 7, 2005 | 08:50 PM
  #4  
Corvette0096's Avatar
Corvette0096
Race Director
20 Year Member
Liked
 
Joined: Aug 2000
Posts: 11,506
Likes: 4
From: Vancouver,Wa.
Default

Originally Posted by 65Z01
If the length is off the rocker will ride more to one side than across the center of the valve stem tip. This can cause excessive side thrust which can wear the valve guides.
Reply
Old Jan 7, 2005 | 09:17 PM
  #5  
cv67's Avatar
cv67
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Default

Someone just give you a set of pushrods?
Make sure and have the length and straightness checked!
Reply
Old Jan 8, 2005 | 06:09 AM
  #6  
devilfish's Avatar
devilfish
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2000
Posts: 3,010
Likes: 1
From: Sweden/Stockholm
Default

Originally Posted by cuisinartvette
Someone just give you a set of pushrods?
Make sure and have the length and straightness checked!
No. Im just trying to learn things.
WHat is the procedure to measure the correct lenght?
Reply
Old Jan 8, 2005 | 09:01 AM
  #7  
JUAN J SANCHEZ's Avatar
JUAN J SANCHEZ
Burning Brakes
 
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Default

Get yourself an adjustable pushrod , Comp Cams make different sized ones depending on your application. What you want is the roller rocker tip to travel from the inner part of the stem (not the egde) to the outer part of the valve stem ( not the edge)! You want max lift to be right about the center of the stem! I lost my abiity to post pics but as soon as I get it back I'll post a pic!
Reply
Old Jan 8, 2005 | 09:58 AM
  #8  
devilfish's Avatar
devilfish
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2000
Posts: 3,010
Likes: 1
From: Sweden/Stockholm
Default

Originally Posted by JUAN J SANCHEZ
Get yourself an adjustable pushrod , Comp Cams make different sized ones depending on your application. What you want is the roller rocker tip to travel from the inner part of the stem (not the egde) to the outer part of the valve stem ( not the edge)! You want max lift to be right about the center of the stem! I lost my abiity to post pics but as soon as I get it back I'll post a pic!
Thank you!!
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Jan 8, 2005 | 09:48 PM
  #9  
ZD1's Avatar
ZD1
Burning Brakes
20 Year Member
 
Joined: Aug 2000
Posts: 1,146
Likes: 2
From: Albuquerque NM
Default

Originally Posted by devilfish
What can happen if you dont run with "perfekt" push rod lenght? What will wear down ?
Hyd liftters can take .050" off.
Reply
Old Jan 9, 2005 | 03:44 PM
  #10  
devilfish's Avatar
devilfish
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2000
Posts: 3,010
Likes: 1
From: Sweden/Stockholm
Default

Originally Posted by JUAN J SANCHEZ
Get yourself an adjustable pushrod , Comp Cams make different sized ones depending on your application. What you want is the roller rocker tip to travel from the inner part of the stem (not the egde) to the outer part of the valve stem ( not the edge)! You want max lift to be right about the center of the stem! I lost my abiity to post pics but as soon as I get it back I'll post a pic!
any pics yet?
Reply

Get notified of new replies

To push rods





All times are GMT -4. The time now is 11:56 AM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE