[gatewayracer]

Originally Posted by Nimair.ZL1

Piston and sleeve is pretty much done as far as I know. I think the valvetrain is still intact. I highly doubt it was the intercooler bricks but it could be a possibility that they leaked. I did see a shit ton of white smoke come out of my tail pipe. All the coolant drained pretty much instantly as far as I know. Before it blew it was full

When the cam was installed, was piston to valve clearance checked?

[Nimair.ZL1]

Originally Posted by gatewayracer

When the cam was installed, was piston to valve clearance checked?

Don't think so but not completely sure

[KingLT1]

Not the first time intercooler bricks have leaked and caused a failure. I have seen it reported on at least 2 other ZL1's. Don't think it's related to a defective part. I think it's more related to installation error from when the supercharger was removed. Pinched O ring or something of the sorts. I didn't see the full break down of the other failures...

[Nimair.ZL1]

Originally Posted by KingLT1

Not the first time intercooler bricks have leaked and caused a failure. I have seen it reported on at least 2 other ZL1's. Don't think it's related to a defective part. I think it's more related to installation error from when the supercharger was removed. Pinched O ring or something of the sorts. I didn't see the full break down of the other failures...

Pressure tested the bricks and no leaks. It was the exhaust valve head that broke off

[KingLT1]

Originally Posted by Nimair.ZL1

Pressure tested the bricks and no leaks. It was the exhaust valve head that broke off

I guess I missed the post, but where did all the coolant come from in the supercharger? I do agree with others that already posted that it's pretty uncommon for IC bricks to leak, but was just stating that I have seen it reported a couple of times over the years. Broken exhaust valve is odd at your power level. Something must have been off on the valve train setup as previously mentioned.

[Nimair.ZL1]

Originally Posted by KingLT1

I guess I missed the post, but where did all the coolant come from in the supercharger? I do agree with others that already posted that it's pretty uncommon for IC bricks to leak, but was just stating that I have seen it reported a couple of times over the years. Broken exhaust valve is odd at your power level. Something must have been off on the valve train setup as previously mentioned.

That is still a mystery to me. If I had to guess I think a O-ring must've been a little worn. A broken spring would explain the valve contacting the piston and breaking off but tbh not sure what went on

[gatewayracer]

Originally Posted by gatewayracer

When the cam was installed, was piston to valve clearance checked?

Originally Posted by Nimair.ZL1

Don't think so but not completely sure

The two most important things when installing a new cam are to degree the cam and check piston to valve clearance.

Too far advanced and Intake makes contact, too far retarded and exhaust valve makes contact.

After the valve dropped it would only take a split second to crack the head or block and cause the coolant leak.

Did you install the cam yourself?

[Nimair.ZL1]

Originally Posted by gatewayracer

The two most important things when installing a new cam are to degree the cam and check piston to valve clearance.

Too far advanced and Intake makes contact, too far retarded and exhaust valve makes contact.

After the valve dropped it would only take a split second to crack the head or block and cause the coolant leak.

Did you install the cam yourself?

No sir I did not. It was installed by a reputable shop whom I will not take to name of

[Z OH 6]

Originally Posted by Nimair.ZL1

No sir I did not. It was installed by a reputable shop whom I will not take to name of

Fair enough as long as their owning up to it and paying for the damage, as any reputable shop should do.

[KingLT1]

Originally Posted by gatewayracer

The two most important things when installing a new cam are to degree the cam and check piston to valve clearance.

Too far advanced and Intake makes contact, too far retarded and exhaust valve makes contact.

Did you install the cam yourself?

I would agree on an engine more extensively modified. But installing a stage 1 or 2 cam kit in a stock head/compression LT4 usually doesn't necessitate those measures. There is normally plenty of PTV just needs to be lined up dot to dot on the gears. Now if the heads were milled and/or thinner gaskets were used, then yeah PTV should definitely be verified.

[JSH]

I broke something major yesterday but haven't taken it apart to see what. Most likely the SC

[Nimair.ZL1]

Originally Posted by JSH

I broke something major yesterday but haven't taken it apart to see what. Most likely the SC

I do pray that you don't have a major problem like I do. If you do long block is the only thing you can do. If you want you can message me on Facebook to talk about it. My name is Nimair Ghulamani

[2018ZL1]

Originally Posted by JSH

I broke something major yesterday but haven't taken it apart to see what. Most likely the SC

That sucks! Hopefully it is the blower and nothing else! Fingers crossed for you!