bdw18_123
12-13-2011, 11:00 PM
Went and got my Z smogged today. Was a little bit worried about whether it would pass or not because of hearing of all the issues some guys are having getting our cars to pass, especially with the newly reduced emissions limits in CA.
I needn't have worried though, my '90 Z passed the enhanced smog check with flying colors! :thumbsup: :dancing
The smog place I went to is about 14 miles from my house by freeway, so I went that way and stayed in 4th pretty much the whole way to keep the RPM's up to get the cats good and hot for the test.
I don't know if this made a difference or not, but I also switched the power key to 'normal' and removed the key for the test.
http://i13.photobucket.com/albums/a292/bdw18_123/-My90ZR-1smogtest001copy.jpg
To help out anyone else trying to get their Z to pass, here is the info on my car:
- About 1,300 miles on a recently "rebuilt" with all new gaskets from Jerry's Gaskets and thoroughly cleaned inside and out LT5. Not overhauled though, I only replaced 1 liner (because of a few small chips in the nikasil) and the piston rings (used) on the piston in that same cylinder. Rotating assembly still has 140K on it other than that one liner and used piston ring set I installed.
- Heads were completely cleaned & gone through, 5-angle valve job and valve guide seals installed on the exhaust valves ('90 heads came stock without seals on the exhaust valves).
- Intake cams are timed to the stock 114 degrees (which stayed the same for the rest of the model years of Z's), but exhaust cams are timed to 110 degrees ('93-'95 LT5 stock timing, '90-'92 LT5's are 114 stock on exhaust cams).
- IAT sensor relocated to under the front bumper.
- ~51K mile set of '91 exhaust manifold/cat assemblies installed, probably a big factor in why my Z passed so well (thanks to an awesome ZR-1 brother, Cliff, for the donation!).
- One new Bosch O2 sensor couple hundred miles ago (driver's side, the one that came with the car turned out to be bad), other side is also a Bosch, but was in the car when I bought it.
- New set of AC/Delco PCV valves at time of rebuild & entire vacuum system rebuilt and tested.
- Fresh spark plugs at time of rebuild, nothing fancy just the regular stock AC/Delco ones.
- Rebuilt Bosch II fuel injectors from FIC that had come with the car (gone through and cleaned by FIC before installation)
- Full tank of gas from Arco (been using that brand for years, never once had an issue with their fuel), 91 of course.
- Fresh Mobil 1 High Mileage oil at time of rebuild.
- I do not have any PCV oil catch-can installed.
Everything else is stock on the car.
I noticed a funny thing about the report though - the 'Functional EGR' test is correctly listed as "N/A", but the 'Visual EGR' is listed as "Pass-"! I wonder how they saw a non-existent EGR system on my car? :sign10:
I needn't have worried though, my '90 Z passed the enhanced smog check with flying colors! :thumbsup: :dancing
The smog place I went to is about 14 miles from my house by freeway, so I went that way and stayed in 4th pretty much the whole way to keep the RPM's up to get the cats good and hot for the test.
I don't know if this made a difference or not, but I also switched the power key to 'normal' and removed the key for the test.
http://i13.photobucket.com/albums/a292/bdw18_123/-My90ZR-1smogtest001copy.jpg
To help out anyone else trying to get their Z to pass, here is the info on my car:
- About 1,300 miles on a recently "rebuilt" with all new gaskets from Jerry's Gaskets and thoroughly cleaned inside and out LT5. Not overhauled though, I only replaced 1 liner (because of a few small chips in the nikasil) and the piston rings (used) on the piston in that same cylinder. Rotating assembly still has 140K on it other than that one liner and used piston ring set I installed.
- Heads were completely cleaned & gone through, 5-angle valve job and valve guide seals installed on the exhaust valves ('90 heads came stock without seals on the exhaust valves).
- Intake cams are timed to the stock 114 degrees (which stayed the same for the rest of the model years of Z's), but exhaust cams are timed to 110 degrees ('93-'95 LT5 stock timing, '90-'92 LT5's are 114 stock on exhaust cams).
- IAT sensor relocated to under the front bumper.
- ~51K mile set of '91 exhaust manifold/cat assemblies installed, probably a big factor in why my Z passed so well (thanks to an awesome ZR-1 brother, Cliff, for the donation!).
- One new Bosch O2 sensor couple hundred miles ago (driver's side, the one that came with the car turned out to be bad), other side is also a Bosch, but was in the car when I bought it.
- New set of AC/Delco PCV valves at time of rebuild & entire vacuum system rebuilt and tested.
- Fresh spark plugs at time of rebuild, nothing fancy just the regular stock AC/Delco ones.
- Rebuilt Bosch II fuel injectors from FIC that had come with the car (gone through and cleaned by FIC before installation)
- Full tank of gas from Arco (been using that brand for years, never once had an issue with their fuel), 91 of course.
- Fresh Mobil 1 High Mileage oil at time of rebuild.
- I do not have any PCV oil catch-can installed.
Everything else is stock on the car.
I noticed a funny thing about the report though - the 'Functional EGR' test is correctly listed as "N/A", but the 'Visual EGR' is listed as "Pass-"! I wonder how they saw a non-existent EGR system on my car? :sign10: