[Z OH 6]

Originally Posted by pauly1119

The majority of the failures I’ve seen are the cars built in 2017 which can be either a 2017 or a 2018 model.

I believe all 2017's are susceptible and early to mid 2018's, I think late 2018's might be corrected.

[pauly1119]

Originally Posted by Z OH 6

I believe all 2017's are susceptible and early to mid 2018's, I think late 2018's might be corrected.

I hope so! I haven’t seen many later model cars on the list. But I still think even the earliest built cars have a relatively low failure rate. I’m thinking about what mods I’m going to do when my warranty is up and actually brought this up to one of the big performance shops in south Fl and he said he hasn’t see any failures on ZL1’s with stock pumps but changing it out would be my option. My plan would be a cam, headers, exhaust so I think it would be silly not to upgrade it then.

[Z OH 6]

Originally Posted by pauly1119

I hope so! I haven’t seen many later model cars on the list. But I still think even the earliest built cars have a relatively low failure rate. I’m thinking about what mods I’m going to do when my warranty is up and actually brought this up to one of the big performance shops in south Fl and he said he hasn’t see any failures on ZL1’s with stock pumps but changing it out would be my option. My plan would be a cam, headers, exhaust so I think it would be silly not to upgrade it then.

Agreed, even on my 2021, if I was doing a cam, I would install the Katech pump at that time. Its a no brainer. I'm just not going to swap to a Katech pump until that time since I feel like I'm relatively safe in a 2021.

[Jeauxy]

I feel for those 18' and under, but I will say that it's fascinating on a mechanical level to see them identify it and fix it to where it's almost none issue in the data we're seeing in the poll. It's the little things.

[ZX-10R]

It's still a flawed design and Katech still says they can break the new pumps under testing, so I wouldn't get too overconfident in GM's lackluster engineering skills

[Z OH 6]

Originally Posted by ZX-10R

It's still a flawed design and Katech still says they can break the new pumps under testing, so I wouldn't get too overconfident in GM's lackluster engineering skills

Every part can break with enough stress testing.

[Dave777]

Why didn’t GM install a dry sump oil system like they did for C7 Z06 Vette ?

There’s enough space for dry sump oil tank in ZL1 engine bay.

[Z OH 6]

Originally Posted by Dave777

Why didn’t GM install a dry sump oil system like they did for C7 Z06 Vette ?

There’s enough space for dry sump oil tank in ZL1 engine bay.

Wasn't needed. The biggest benefit to dry sump oiling is space savings. If you need to a very shallow oil pan but still need a large volume of oil, dry sump is the way to go. It adds cost and complexity when it's not needed though so the Camaro uses a wet sump because it doesn't need it

[ZX-10R]

I don't think dry sump pumps have this problem though? Also, eliminates potential oil starvation with aggressive cornering - which is apparently why the 1LE gets the higher viscosity oil spec, kind of a band aid

[Z OH 6]

Originally Posted by ZX-10R

I don't think dry sump pumps have this problem though? Also, eliminates potential oil starvation with aggressive cornering - which is apparently why the 1LE gets the higher viscosity oil spec, kind of a band aid

Dry sump or wet sump has nothing to go with the oil pump failures in 2017 and 2018. There are no advantages to dry sump other than space savings as long as both system have similar oil capacities. The Camaro has enough ground clearance to get away with a wet sump oiling system to reduce the cost and complexity vs a dry sump system. If GM engineers felt a dry sump was needed in the Camaro, it would have been there.

[ZX-10R]

Another way of saying this is you don't seem to hear about as many Corvette LT4 oil pump failures. Are the pump internals and housing exactly the same?

[Z OH 6]

Originally Posted by ZX-10R

Another way of saying this is you don't seem to hear about as many Corvette LT4 oil pump failures. Are the pump internals and housing exactly the same?

Only if the pump were different. The oiling system isn't the cause. I'm not taking the time to investigate the part numbers, maybe someone else has.

[george]

Originally Posted by Z OH 6

Every part can break with enough stress testing.

No doubt. I wish KATECH would put the tolerance levels they discovered on the first pump and the current GM one and compare that to the one they build. That's a definitive measure. This will also help those with the original pump understand why GM had to modify it. It would also be interesting to know of all the original parts, what their failure rate is. As someone stated in this thread, getting the car to operating temperature will decrease stress on the pump and increase lifespan of the part.

[Mark R]

Originally Posted by george

No doubt. I wish KATECH would put the tolerance levels they discovered on the first pump and the current GM one and compare that to the one they build. That's a definitive measure. This will also help those with the original pump understand why GM had to modify it. It would also be interesting to know of all the original parts, what their failure rate is. As someone stated in this thread, getting the car to operating temperature will decrease stress on the pump and increase lifespan of the part.

Pump failure is not complicated. The pivoting ring inside the pump, the part that bears against the pump vanes, will crack. Once that does, it is a matter of a few seconds or a few hours until the pump has a catastrophic failure.