Lots of valvetrain noise with stock engine
Lots of valvetrain noise with stock engine When I bought my car, there was only a little bit of a rattling sound from the valvetrain. Nothing your usual LS1 would not do. After I changed my oil the first time, using Mobile 1 0w-40, the valvetrain noise is unbearable. If revved to around 1000-1100 rpm it sounds like *****. Car is a 2002 with 58,000 miles on it. Spent another $30 on Castrol syntec 10w-40, still making same noise. I am using the AC Delco oil filter. Should I try a different filter?
Mom's 99 TA with 86,000 miles on it makes no noise with plain old 10w-30 dyno oil.
I know LS1 engines are known for this but mine is the loudest I have ever heard. Makes noise even when warmed up, no it is not piston slap.
Mom's 99 TA with 86,000 miles on it makes no noise with plain old 10w-30 dyno oil.
I know LS1 engines are known for this but mine is the loudest I have ever heard. Makes noise even when warmed up, no it is not piston slap.
I have a cam in my car, but my valvetrain annoys the hell out of me, i just run around with the cut-out open so it drowns it out...i have driven around this way for 10000 miles in the last 4 months with no problems, i guess i will live with it untill i have a problme 
I used to run Mobil 1 5w-30, im now running 10w-30 with no change in anything, but less piston slap.
I used to run Mobil 1 5w-30, im now running 10w-30 with no change in anything, but less piston slap.
I second the bent pushrod, there is no reason that just swapping oils would make it do that, then changing back to the original oil, it still does it. Curious to hear how the oil pressure is... Hope you find the culprit, and get it fixed!
Oil pressure is steady around 43 PSI at idle and over 60 when rpm is above 2,000 or something like that. I just read somewhere on here that the oil filter can starve the valvetrain of oil if too restrictive. Is this not true? Yes I need to check the pushrods I guess.
after my first oil change i noticed a lot of valvetrain noise, too. but, evidently the WOMAN that owned the car before me rarely changed the oil, as i changed it 3 more times in a period of 3 months. the oil would get black and shitty very quickly. it seemed that after running the new oil for ~500 miles the valvetrain noise would quiet down. since then, the car has been constantly raped (like the last 15k miles..) and has excellent oil pressure still and hardly any valvetrain noise. bent pushrods will most likely have a single tick, whereas what you're describing sounds like change in the motor..
Trending Topics
Originally Posted by s346k
bent pushrods will most likely have a single tick, whereas what you're describing sounds like change in the motor..
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
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
Originally Posted by Fire-formula 93
That is a good representation of the sound. Is there any way I could have a few slightly bent pushrods. It sounds like something is loose and it is not a good feeling to have that you may have a few loose rockers.
yeah i have always been told you will know that you have a bent pushrod cause it will feel like something is wrong, and when i bent one in my 289 (i know i was young i have learned) i could tell, the car stumbled at idle and did not like to rev freely
That is agreeable. Just say though they are slightly bent. Not enough to decrease performance or cause stumbling etc., but just enough to cause some clatter. I very slightly bent pushrod would be shorter ever so slightly and would throw off the geometry and cause noise. Just like when you use the wrong length pushrod for a new cam. I am just speaking out of my *** but it makes sense to me.
just1news6: The stripes are charcoal metallic, could not have chosen a better color to compliment the SOM in my opinion. I really need to do a photoshoot, it deserves it. This is the only pic I have with the stripes. Its the one I used for the sig. Thanks for the compiments by the way.
just1news6: The stripes are charcoal metallic, could not have chosen a better color to compliment the SOM in my opinion. I really need to do a photoshoot, it deserves it. This is the only pic I have with the stripes. Its the one I used for the sig. Thanks for the compiments by the way.
Launching!
Joined: Nov 2005
Posts: 240
Likes: 0
From: Thornton, Colorado
Originally Posted by Fire-formula 93
That is agreeable. Just say though they are slightly bent. Not enough to decrease performance or cause stumbling etc., but just enough to cause some clatter. I very slightly bent pushrod would be shorter ever so slightly and would throw off the geometry and cause noise. Just like when you use the wrong length pushrod for a new cam. I am just speaking out of my *** but it makes sense to me.
