valve train noise
Thread Starter
On The Tree
Joined: Oct 2002
Posts: 103
Likes: 0
From: Vidor,Texas
valve train noise I just put a MTI C1 cam in my car (222/222 566/566 112 lsa) with there stage two heads. Really got some valve train noise coming from it. It seems to be running ok and has a great sound out the back but under the hood it has quite abit of noise wish I could describe it all I can say is it sounds like valve train noise?
TECH Fanatic
Joined: Nov 2001
Posts: 1,695
Likes: 9
From: Raleigh, NC
Valvetrain noise is pretty normal. I hate to say that because I have not heard yours in particular, but I can say that my Z06 and every Z06 I have ever driven had a lot of valvetrain noise. It is just the nature of running a high-lift cam.
Thread Starter
On The Tree
Joined: Oct 2002
Posts: 103
Likes: 0
From: Vidor,Texas
Really wish I could describe the noise its not ticking but it is coming from the valve train. I have the stock rr's and had to put some clearance in them because the were hitting the retainers the first time i tried it them got alot quieter but now has a sound Im not use to pushrods are 7.370 cuz the heads are cut 30. car has good oil pressure about 42 at idle and the rr are torque down to spec. as soon as I get those damn transmission lines to stop leaking at the trans. Im going to let it idle for alittle and see if it will quiten down alittle more. Maybe it is normal and Im just paranoid.
That is another reason I'm going with someone's fully adjustable rockers, so I can adjust the valve train properly.
Here is a great test to determine is your geometry is good: Take a torque wrench and a 22 mm socket and see how many ft/lbs it takes to rotate it it over. Then go to a bone stock car and see how many ft/lbs it takes.
"Gee Mom now I wonder why my heads/cam car dynos under 400rwhp!" =P
Here is a great test to determine is your geometry is good: Take a torque wrench and a 22 mm socket and see how many ft/lbs it takes to rotate it it over. Then go to a bone stock car and see how many ft/lbs it takes.
"Gee Mom now I wonder why my heads/cam car dynos under 400rwhp!" =P
Thread Starter
On The Tree
Joined: Oct 2002
Posts: 103
Likes: 0
From: Vidor,Texas
Has anyone had a problem with the stock RR hitting the retainers in this application. the stage 2 heads from MTI has titanium retainers with the double springs? saw some where when looking for info one this where they grind the stock rocker for clearance. Thanks for everyones reply.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
Testing valve train geometry?
Originally Posted by masterdill
That is another reason I'm going with someone's fully adjustable rockers, so I can adjust the valve train properly.
Here is a great test to determine is your geometry is good: Take a torque wrench and a 22 mm socket and see how many ft/lbs it takes to rotate it it over. Then go to a bone stock car and see how many ft/lbs it takes.
"Gee Mom now I wonder why my heads/cam car dynos under 400rwhp!" =P
Here is a great test to determine is your geometry is good: Take a torque wrench and a 22 mm socket and see how many ft/lbs it takes to rotate it it over. Then go to a bone stock car and see how many ft/lbs it takes.
"Gee Mom now I wonder why my heads/cam car dynos under 400rwhp!" =P
TECH Junkie
Joined: Dec 2001
Posts: 3,242
Likes: 0
From: Lakeland, FL
What Cal said how much preload you got when tq'ing them? You can get some aftermarket rockers like the yt's that will quiet it down some but some people are having issues with the Yella Terra's so run a search to make sure you arent using any of the same parts that they were.
Rockers hitting retainers is not normal. My very first set of heads did that because they had old style(non LS1 valve stem size) retainers. I had to use lash caps with pedestal shims under the rockers and I believe I used my 7.40 Comp pushrods. We tried clearanceing the rockers first but they still hit the retainers. Clearancing or grinding on the rocker arms will weaken them and over time they will flex even more than they probably do now.
At this point you could try a different rocker arm. I have heard some of the aftermarket rockers have plenty of clearance.
At this point you could try a different rocker arm. I have heard some of the aftermarket rockers have plenty of clearance.
