Well I talked to the shop and they are telling me that I either have to keep cutting the lifters to make things work or take the head off and take it to them which is what I'll do this weekend. What's stupid is. They don't mention anything about paying for all this crap. Like new HG gasket, intake, exhiast. What do you guys think? This should have been done right the first time whe I paid for everything. This is really stupid. I will keep you guys updated to see what happens. They are also telling me that they didn't cut the seats at all just cleaned them up. I'm running the standard GSC valves are they taller then OEM by any chance? Reason I ask is because my old set of OEM lifters are cut 40 thousands and I still have the issue. Shouldn't that compensate for the valve stem hight even if they are taller? The OEM limits give you .5MM or .20 thousands room to play with, so 40 thousands is 10MM taking from the lifters.shpuldent that fix the issue? I am lost at this point. We willl see what the shop will do when I take the the head. They want to measure everything again.

 

40 thousandths is 1 mm.

They should never be cut anyway.

Your shop....they've got no idea what they're doing.

 

No need to cut them just replace them and all will be good

 

How bout you drop some shop names.

Curious as to which cali shop couldnt figure out the problem...

We have some really good shops here..

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in for conclusion

 

We're the cams previously used? A camshaft with a f-up base circle can cause this also. But it would have to be pretty bad and not likely. If you swap a lifter off of a cylinder that's working properly and it screws up again on that same cylinder it's the camshaft.

 

Actually the only time I have seen this it was a bad camshaft, so that's what I would check first.

 

Any shop that would tell you to pull the head for what is clearly a valvetrain issue isn't worth dealing with! Get your car outta there!

 

I just confided in a friend who has extensive experience with Over head cam motors, he says check all the camshaft clamp bolts for proper torque. He had a motor where the bolts weren't tightened down all the way and it caused this same issue.

 

I really don't want to give out names. But a shop in Northern California/Bay Area

 

The cam caps are torqued down To 15 pounds. I just replaced the lifters with used low milage OEM lifters and I got the same results as far as the co
Press ion. Cylinder one 60, two 120, three 120, four 120. That was right after I shut the car off after Ifeling for a bit. I will do another compression test latter to make sure that I still get the same result on cylinder 2,3,4. I called a lot of shops and was told it's either a lifter issue or valve stem hight. So now we will wait and see what the compression test will show tonight. I will post results.

 

Non concentric base circle on the camshaft will do the same thing. That's why I ask if the cams are new? Looks like #4 is ok now?

 

I'm surprised you are getting much sealing if the engine is that new. The rings probably aren't even worn in, I'd think.
kikiturbo could be right: Once the engine is running and the lifters fill, the valves could be stuck open. If you have new valves and they didn't grind them to fit, that could be the problem.
That's one of many possibilities.. and one of the hardest to check.

 

I bought the cams brand new and had 100 miles on them before they blew. How ever my exhaust can was little damaged so I send it to American can and they fixed it and polished it. Other the. That the cams were used before with no issues.

 

You mean on the leak down test?