vavle problems
Thread Starter
Racer
Joined: Nov 2006
Posts: 495
Likes: 1
From: Lubbock TX
vavle problems
driving home last night and started hearing a ticking sound out of the drivers side exhaust. checked it out today and this is what i found
its hard to see, but the valve on top is a little bit rounded where it slid off.
i tried loosening it and putting it back but it wiggled alot then came back of when i bumped the engine.
what do i need to do now?
its hard to see, but the valve on top is a little bit rounded where it slid off.
i tried loosening it and putting it back but it wiggled alot then came back of when i bumped the engine.
what do i need to do now?
Thread Starter
Racer
Joined: Nov 2006
Posts: 495
Likes: 1
From: Lubbock TX
Check the pushrod guide hole.
Race Director
Joined: Aug 2004
Posts: 10,628
Likes: 132
From: Duvall, WA
Are the rocker studs screw-in or press-in? The studs may have backed out, thus loosening the rocker arm. I would adjust that valve and then check the valvetrain geometry. You want the tip of the rocker arm to travel across the center 1/3ish of the top of the valve.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Oct 2001
Posts: 2,065
Likes: 1,395
From: Halifax, Nova Scotia, Canada
Are you sure the rocker is not split/cracked where the ball sits ?
Chevy rockers are known for the bottoms to split out.
If it was cracked, this would make the rocker tilt to one side.
Barry
Chevy rockers are known for the bottoms to split out.
If it was cracked, this would make the rocker tilt to one side.
Barry
Race Director
Joined: Mar 2006
Posts: 14,112
Likes: 28
From: Florida
Thats what I meant.
The holes are guides to keep the pushrod and then the rocker straight.
You might be able to install a guide plate, or
the other alternative is to have the hole welded and hole cut, or
a bushing can be made to thread in and then drilled to fit, or
replace head.
The holes are guides to keep the pushrod and then the rocker straight.
You might be able to install a guide plate, or
the other alternative is to have the hole welded and hole cut, or
a bushing can be made to thread in and then drilled to fit, or
replace head.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
I hope there are a lot of miles on that engine. If not, its been run hard and put away "hot". If lots of age on the engine, the valve springs may be pretty weak....and if you wound it up tight, well, $hi+ happens. As a minumum you ought to de-gunk the engine and have the heads overhauled with new springs, valves, reground seats, etc.
Melting Slicks
Joined: Apr 1999
Posts: 2,010
Likes: 3
From: Moon Twp. PA USA
I hope there are a lot of miles on that engine. If not, its been run hard and put away "hot". If lots of age on the engine, the valve springs may be pretty weak....and if you wound it up tight, well, $hi+ happens. As a minumum you ought to de-gunk the engine and have the heads overhauled with new springs, valves, reground seats, etc.
Thread Starter
Racer
Joined: Nov 2006
Posts: 495
Likes: 1
From: Lubbock TX
yeah i know its bad, but you have to have money to buy new parts.
where do i get a guide plate? and any more info on that.
hopefully in the next few months ill have the money for some new heads but i just need a quick fix right now.
what heads would you guys recommend, nothing real fancy and expensive?
thanks,
sean
where do i get a guide plate? and any more info on that.
hopefully in the next few months ill have the money for some new heads but i just need a quick fix right now.
what heads would you guys recommend, nothing real fancy and expensive?
thanks,
sean
Burning Brakes
Joined: May 2007
Posts: 1,150
Likes: 14
From: LaMoille Illinois
Well to be honest if the bottum of the engine looks anything like the top putting new heads on it would probably blow the rings out of the pistons if you dont rebuild the bottum end!!
you should be able to pick up a beefy rebuilt 350 with a descent set of factory 2:02 heads for a couple grand and just throw your intake etc. on it!!
you should be able to pick up a beefy rebuilt 350 with a descent set of factory 2:02 heads for a couple grand and just throw your intake etc. on it!!
Burning Brakes
Joined: May 2007
Posts: 1,150
Likes: 14
From: LaMoille Illinois
i just picked up this lil beauty last fall 327 11:1 flat top pistons 280 magnum cam, factory 461 2:02 heads with full roller rockers and stud girdles,hd oil pump double roller chain and gears,all fresh minus the intake and valve covers for 1400 from the local machine shop
Thread Starter
Racer
Joined: Nov 2006
Posts: 495
Likes: 1
From: Lubbock TX
i need to look into that...
but i took he oil pan off a while back and everything seemed clean and there wasnt any gunk in the pan. ive only had the car running for a few months after it has sat for 15 years. thats why there are some new parts, and some crappy ones still left. as for changing the oil, changed it probably 3 or 4 times with mobil 1, since it started running.
but i took he oil pan off a while back and everything seemed clean and there wasnt any gunk in the pan. ive only had the car running for a few months after it has sat for 15 years. thats why there are some new parts, and some crappy ones still left. as for changing the oil, changed it probably 3 or 4 times with mobil 1, since it started running.
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,501
From: Little Rock AR
i just picked up this lil beauty last fall 327 11:1 flat top pistons 280 magnum cam, factory 461 2:02 heads with full roller rockers and stud girdles,hd oil pump double roller chain and gears,all fresh minus the intake and valve covers for 1400 from the local machine shop
The rest sounds good though. -Mark.
