Synacks

Guess I'm joining the not so wonderful club of bad lifters and ruined camshafts.

I've got a really good mechanic taking a look at it right now, has built hundreds of race cars and works on Chevy and LS motors all the time.

Is there anything I can relay to him that might help?

He seems to think that the whole motor and a bunch of other things will need to come out and will cost at least a few thousand $$$$ to do the job, and multiple weeks of effort.

Also, are there newer/better replacement parts out there so I can avoid having this event occurring twice?

Any help would be greatly appreciated.

rjacobs

If there is debris in the motor, yup, motor is coming out to clean it all out. Hopefully it didnt eat bearings, crank, rods, etc...

Until you know WHAT happened, hard to recommend replacement parts that "might" be better.

Unreal

Factory? Aftermarket? Stock cam?

All of them have seen failures. Go with a good proven setup. The new johnson lifters are nice.

outhouse

Not enough info for anyone to help with a hunch for a diagnosis



Happens, does not mea the rest of the motor needs pulled.




What was oil pressure ???? oil pressure low, might be pulling everything.


How many mils and what year? 13? ya everythings out

Undy

A lot of times it's a soft cam that eats the lifter.

Unreal

Or a loose cam gear.

RamAir972003

My comp cam ate all my lifters comp does not stand by their products I can tell you that.....look at my build due ti soft cam...

RedZ4me

...........too much spring pressure?

RedZ4me

..................too much spring pressure?

RedZ4me

Too much spring pressure is also often a cause

RedZ4me

sorry for the duplicates, wasn't posting until I refreshed the page. apologies

Synacks

I should know more in a couple days but everything I have is stock and 2009 Z06 with 40,000 miles.

Synacks

Oil pressure was fine. Car drove fine but it occasionally misfired at idle and would throw a check engine light for cylinder 2 misfire.

Unreal

Its going to be a chicken/egg thing. Cam could kill lifter, or lifter can kill cam. Also could be cam gear backing out. Seen all 3 take out a lifter.

50 4Ever

In GM's wisdom, the oil pump is located between the pan and the filter. With all that crud going through the pump it could be damaged also.

Katech_Zach

...or poor valvetrain dynamics beating up the lifter.

outhouse

Process is taking valve covers off and inspecting.


Guy last weak thought what you did and it was just a busted spring, they used a bore scop and found the piston was in perfect shape, new spring and the guy was down the road.


If it is a lifter heads come off for lifter/cam exam.

outhouse

Excellent advise, but if his oil pressure was fine it may not be in bad shape.




If he gets that low in the motor, I definitely would take a peak see

Michael_D

The OEM .700" lifter wheel and 1.8 RR are not what I considee a good match. I'm a broken record at this point...... I do not like GMs .700" roller wheel. Not saying that is what happened here, but it doesn't help.

If the cam lobe is gone, an engine tear down is highly recommended.

Synacks

Do you or anyone else recommend something better? Obviously I am going to have to replace them and want to replace with something better than the terrible factory ones.