90 ZR-1 need some info

[Hog]

Originally Posted by Z06scentair

At the dealership yesterday.....guess what in the service bay? Yep a c7 with issues....imagine that.

Dave told me it had some sort of coolant smell inside that cabin which made it unbearable to drive. GM had flown an engineer down last week to analyze with no root cause established. Man I would like to see that 8D corrective action!

I like em though and with you there, may be another z in the stable next year

Dealerships arpound here wernt allowed to touch the LT5, it had to go for a trip down South.

Every machine is going to break down. Just because 1 breaks, doesnt mean there are "issues" doesnt necessarily mean the design is faulty.

The C6 saw 2 dry sump designs, the early ones were redesigned. That wasnt just an LS7 issue, it affected the LS3 dry sump as well.

[TCurtner]

Originally Posted by Hog

Dealerships arpound here wernt allowed to touch the LT5, it had to go for a trip down South.

Every machine is going to break down. Just because 1 breaks, doesnt mean there are "issues" doesnt necessarily mean the design is faulty.

The C6 saw 2 dry sump designs, the early ones were redesigned. That wasnt just an LS7 issue, it affected the LS3 dry sump as well.

I enjoyed my (several) C6 Z06s - they were entertaining to drive, and very strong runners...but i would have to take issue with the design statement. If they did all the testing that they apparently did (have you seen the video with Dave Hill touting the car's testing on tracks and the dedicated parts from the racing program/experience?), then the dry sump system should be completely reliable under track conditions. I'm sure the 1.2 - 1.3 g (minimum) that the car can pull under ideal conditions (even with the RFlats) should have uncovered any issues with the dry sump engineering. And yet, many of the track failures that have been reported through the years of the oiling alone indicate that either the design was not correct, or that there are faults introduced in production parts or changes which may be influencing the outcome. Either way, something is not right. The Z06 was introduced as a track-worthy car from the factory (safety equipment not withstanding), and that has just not held true. The oiling, the brakes, and the engine itself have had issues. Compare that to the 08-10 Viper...what a difference. The Viper is completely track worthy (avec safety equipment). I'm not sure where I am going with this other than to say, my LT5 has had none of the oiling issues of the LS7 (however, the cooling system is another story, and one of the blackest marks on the ZR-1 in my opinion - i am STILL working on solving that engineering faux pas). And for that, i am grateful.

[Z06scentair]

Originally Posted by Hog

Dealerships arpound here wernt allowed to touch the LT5, it had to go for a trip down South.

Every machine is going to break down. Just because 1 breaks, doesnt mean there are "issues" doesnt necessarily mean the design is faulty.

The C6 saw 2 dry sump designs, the early ones were redesigned. That wasnt just an LS7 issue, it affected the LS3 dry sump as well.

The gentleman who changed the oil in my car saturday was the trained mechanic in North Carolina about 20 so years ago. My brother trained under him in 1988-1989 at the dealership.

He is very knowledgeable about the LT5 and was impressed by my car although he did question the mileage due to the amount residual grease/oil.

After further evaluation I discovered the root cause was most likely a leaking oil cooler line sometime in the long past. Evidence of brazing was present on both oil cooler lines. For the most part it appeared very dry now.