z28strong

I just installed a tsp228 cam, weiand manifold, and 243 heads on my 98 camaro and knw its knockin really bad like something in the manifold i took the manifold off and nothing was in it the car starts but seems like cyclinder 4 n 2 is dead any help ne one

01350ss

iTrader: (18)

rockers too tight or loose? pushrod length - is it correct? springs - what type? installed correctly? spark plug - is it firing?

VerdeZ28

did you put oil in it?!?!?! if not you spun a bearing.


just kidding btw.

Paul 75 L82

iTrader: (1)

Sounds like you broke a spring.

garygnu

remove the valve covers and inspect for broken stuff.what push rods did you use?

Jason 98 TA

iTrader: (4)

Check your valvetrain, preloaded issues can cause some crazy noises!!!

ErkDog

I just did a head/cam swap too from TSP with new pushrods and lifters and have the same issue. I tried longer pushrods and that seemed to help but still have loud valve-train noise. Using CompCams pushrod length checker, I get 7.375 and thats what I put back in it. I've tracked down the noise to the passenger side. Did the redneck screwdriver to the ear trick to find which cylinder and noticed the clicking sounds from cylinder #6. Inspected the rockers/pushrods and everything is snug and looking good - both intake and exhaust open and close correctly. I'm thinking a bad lifter but want to test this so I put back in the longer pushrods for just that cylinder to try and compensate for a bad lifter and low and behold the sound almost goes away. So I'm still thinking a bad lifter or two. Anyone have any other thoughts? I am going to call TSP in the morning and see about getting some replacement lifters.

'06 Silverado CCSB 5.3L
PRC Stage 2.5 5.3 Heads
TSP Torquer v2
CompCams High Energy lifters / TSP pushrods
Stock rockers

J1D2warrior

iTrader: (2)

This is going to sound like a really dumb question, but did you put the rocker stands back on?

I have seen people leave them off by mistake. It will cause serious issues.

ErkDog

LoL... its an honest question, but no, I did not leave them off.

I have done a few SBC builds in my youth but this was my first LS engine so I was very meticulous in doing this by the numbers - double checked everything.

I am excited to get all these issues wrapped up so I can take her out and run the hell out of her! So any advice is greatly appreciated 8-)

ErkDog

Here's something though: I noticed that the passenger side rocker stand was upside down (GM logo was upside down) and the drivers side was right side up. What would happen if I got that mixed up - put the passenger side right side up and the drivers side upside down?

I'm pretty sure I did it the right way (put it back the way it was taken off) but just thinking out loud here - because if doing that offset the geometry then would that cause excessive vale train noise?

J1D2warrior

iTrader: (2)

Dont think that would be an issue at all.

jsteele90

iTrader: (13)

hows oil pressure?

ErkDog

Oil pressure is 40-60 psi from idle to rev. I have noticed that all the rockers are getting plenty of oil.

ErkDog

Did you replace the litters and pushrods?

What brand/type of lifter?
What brand/length pushrod?

I replaced mine with compcams OE High Energy hyd. lifters and TSP 7.375 pushrods. Even after rechecking the length with compcams pushrod length checker (still at 7.375) I still get excessive valve train noise.

hiltsy855

iTrader: (35)

When you figured PR length using the checker what did you add for pre-load?

ErkDog

CompCams says the lifters have a ~.04 - .06 preload so I set it at .05

My calculation was...

10.33 turns for zero lash * .05 per turn + 6.8 for the pushrod checker base length + .05 preload = 7.3665 rounded to the nearest .025 came out to 7.375

So the "actual" preload would be .0585 with the standard lengths of pushrods available (.025 increments).

ErkDog

@z28strong: Whats your status with the knocking? Have you found out any more about whats going on?

bayer-z28

iTrader: (14)

YES... there was a guy Mike94ZLT1 or something. He had a C5 and was re-assembling the engine and forgot those. Dropped a valve or something and it completely destroyed his engine within minutes. NOT good..

(edit) Found the thread.
https://ls1tech.com/forums/generatio...-pictures.html
But anyway. If it's coming from #7, it's the oil pump pick up tube o-ring. if it's anything other than #7 (the whole valve train) It's prolly pushrods.

Here's an interesting thread with a LOT of info. I wish they'd sticky this.
https://ls1tech.com/forums/generatio...r-preload.html

chrisfrost

iTrader: (8)

I thought the stock p-rods are 7.4" . How big is You're cam ?

ErkDog

Thanks bayer-z28 - that was an awesome read! I bookmarked it for future reference!

My entire valve-train makes a lot of racket (heavy sewing machine noise?) but the klank klank klank comes from the passenger side (proly #6).

I'd already ordered new lifters/gaskets/bolts for that side. If this doesn't resolve the klanking then I will try the o-ring thing. And if that works I'll buy you a six-pack of Keystone Light!