Chevycobb

ah crap, sorry I thought I resized those things...i'll work on that

edit:images resized

CSJTA

Why is there 1 old pushrod in your motor? The rest of the pushrods, that I can see, look new. That one is definately old.

1racerdude

Like I said lifters don't just collapse for no reason. If they are stock lifters they are probably OK.
Look in there with a light and see if the cap is still in place before ya pull any more stuff off.
I suspect ya floated the valves(weak springs) and hit a piston or that's a stock non heat treated PR that couldn't take the pressure.. Ya might have to pull the head to see. Do a leak down test on that cyl with the rockers off and see if there is air escaping. If there is ya got a bent valve for sure and some damage to a piston that will require the head to came off for a visual.
But don't know that until further checking. Make sure those two valves are the same height as the others with the rockers OFF.

luckyou03

Here's my car is a loose lifter kncking on the cam. It did alot of damage to the lifter and cam. Got shavings all in the motor. Dont run motor until you get it fixed..

vid

Chevycobb

yeah when I recieved the pushrods I either lost one or one was missing. I posted a long time ago, either on here or another board, asking if I could use a stock one and the reponses said go ahead. I was told that in 94 the PR's were all hardened so it shouldn't be a problem.
I'll still pull the intake off and inspect the lifter. The lifters are the notorious Comp-r lifters that seemed to have failed on numerous occasions with other people.
I took both rockers off, and just eyeballing it the valves for that cylinder looked to be same hight, but i'll look again tomorrow and see.

CamaroSS30thAnn

replace that pushrod and c what happens

if it stops id go with it

also if it happens again id go with true onepeice hardend pushrods, but b4 hand check the pushrod height. usually if u keep bending PRs ur geometry is off

1racerdude

Ya got the STOCK lifters?
If ya do PUT THEM IN. This will avoid a lot of work later. Stock is fine on most any cam except my custom grinds.

Just looks like the stocker couldn't take the load.
What is your spring pressure and do a leak down test before ya put it back together.
Hell to crank it up only to find out it has to come right back apart.

Mike96z

sounds like a knock to me, def not an exhaust leak. Could possibly be lifter?

Mike96z

luckyyou3 that was the cams fault, not the lifter.

Chevycobb

not sure of the seat pressure. lloyd elliott would have to chime in on that as it is his LE1 heads and he put the springs on. I think I may have the stock lifters lying around somewhere. If I have them then i'll soak them in oil for a day or so and put them back in.

Victory Racing

Ouch, that certainly would explain the noise. The pushrod will stay in place typically once it bends like that. Was the rocker beat up at all?

Chevycobb

rocker had no scuffs or any other marks on it. I would take the intake off but its raining now so it will have to wait until tomorrow.

I found all my stock lifters. but I'm not sure how comfortable I am about using them if the other one is bad

CamaroSS30thAnn

im using my stock 78k lifters with my cam , havent had a problem yet

30696bird

Same here. I actually drop a lifter a few months ago. I was bouncing it off the rev limiter doing a burnout in first at 6700 RPM's . I ended up buying 1 "sealed power" lifter at advance auto for $11. I was using comp PR's though and it did even effect it at all. Good luck.

30696bird

I have some good lifters if you need one..... I could meet you somewhere (since we live so close) if you need one today. Before I found out advance would sell one at a time I bought some on ebay that are suppose to have only ~30,000 miles.