ttbestas

Hello
i installed ECS blower cam with new timing chain, oil pump. I have engine ticking noise and its not like sewing machine i guess other people getting. The valve train is all stock, oil pressure is good, AFR on idle is normal as well.

thats the video of the noise
http://www.youtube.com/watch?v=spfsq5Z6gvo
could that be lifter or maybe the rocker? or its something else. thanks

Eric D

I can't run the youtube from where I am right now, will later. How long was the engine ran with the pickup tube issue you had?

ttbestas

no more then 15 sec.

lucky131969

Did ECS confirm that stock springs are ok with their cam?

ttbestas

Yes they did

Blown427conv

What about pushrod length?

SilentFright

First off, did this tick develop after a little drive time or was it there from first fire?

Present from first fire:
1. Make sure you have oil pressure!

2. If the new camshaft is on a smaller base circle than the stock cam your lifter preload will be affected (using the stock pushrods). Use an adjustable pushrod length checker to verify you are still within the stock lifter's ideal preload range. A shallow lifter preload will cause ticking.

Developed tick:
1. Remove valve covers and look for rockers that have barfed needle bearings. This will cause slop in the geometry and result in a tick.

2. I know most popular LSX blower cams incorporate very moderate lift into their designs but the lobe profile (ramp rate) is likely more aggressive than OEM. This can also be taxing on valve springs (especially high mileage springs). If you stuck with your stock springs (you stated valvetrain is all stock) check for spring breakage.

Regards,

ttbestas

Guys thanks for the answers, I noticed that sound right after I start the engine. I have no idea about cam spec just know that it should work with stock valvetrain, maybe ecs will check this thread and give theyr opinion. Tmrw I will remove valve covers.

Eric D

You might as well pull the valve covers and start with some of the already suggested checks. Also check the valve springs are not going into coil bind. It will make a noise much like the one on your youtube.

As a side note, change out your brake fluid!

ls1impulse

What was the previous cam? if the base circles are different in the old/new cam it's very likely you'll need different sized pushrods; which is what the video sounds like.

KCvetteowner

Don't waste your time with the valve covers yet, drain your oil and see if there are any needle bearings in there. If so it's either a lifter or a rocker arm which is not good. If there is something in the oil you probably aren't going to be the one to fix it so just send it to the shop. If the oil is clean THEN go to the trouble to pull your valve covers if you think you want to try to fix it yourself if it's somewhat simple like a broken valve spring.

Bill Curlee

Most likley cause,,,,pushrods are too short! Call ECS and discuss the issue with them.

BC

ttbestas

so i removed valve covers. 7 pushrods on driver side are bent.


pass side head is fine. What could cause that? When i was installing the drivers side head i forget to install this part

and the rockers were tight, so maybe i could damage pushrods by overtighting the rockers. but i havent start the engine that way, i noticed something missing, installed missing piece, but havent checked the pushrods, then started the engine
I have new hardened stock lenght pushrods just im kinda scared to install them, if the some happens again. thanks for you help.

wcsinx

Ain't no maybe about it. If you torqued those rocker arms down tight without that tray in place then you bent the bejeezus out of those rods in the process. It adds a huge (relatively speaking) amount of clearance.

ttbestas

thanks thats what i think of as well. Hope i didnt do to big damage to the engine by this mistake

lucky131969

Forgot to install the rocker arm pivot support, and tightened those babies down anyway, huh? I didn't see that one coming.. I can't help but wonder if there is any lifter damage..

ttbestas

thats exactly what happened. is the a way to check lifter damage or i have to remove heads to check that out? thanks

95BlueBomber

Ouch, well at least you found the problem. Hopefully it didn't damage anything else. Good luck!

lucky131969

Considering the circumstances, I'd just change the lifters out...but that's just me. Sucks...especially if you don't have studs....

slothy

ya for the 150 bucks or so for lifters, id just replace and sleep better at night knowing.