>The answer to your question about putting the Strombergs back on is yes.
>You are not allowed to modify the original equipment. That being said,
>it may depend on what the smog tester knows to look for. For instance,
>there is no way for them to see what cam you are using. On the other
>hand, you may be dirtier with a hotter cam, and certainly in for problems
>if and when they require testing under load. The biggest problem you
>face with the carb is that the testing computer or books will indicate
>that your car came with two carbs and a PCV valve. This will be easy
>for the tester to see as being different. I don't know if it goes into
>what brand carb you have (which I doubt).
>You best shot will be to give yourself plenty of time and try to get
>passed with the current set up. If you fail because of the carbs, you
>can always try to put the others back on. Don't just try to go to
>another shop. I think they now report people who fail too many times
>and then you have to go to a state testing agency that knows a Weber
>from a hole in the ground.
>
>Jay
I've researched a little on this topic, and have found the following to be
mostly true..
1) PCV on any properly equipped engine is not detrimental to performance
and
therefore should be used where appropriate or possible. The PCV valve is
responsible for keeping the oil clean and sludge free, and has very littly
to do with late 60's emmision levels. It should however be taken quite
seriously with respect to smog checks.
2) Most if not all test stations have data that tell the carburation
configuration for a given model year vehicle. Most likely, the testing
station will know to look for two one barrel carburators, and not likely
specifically 150CD strombergs. Properly rebushed and calibrated strombergs
should however pass the lax emmisions requirement for the 65-68 model years
if the engine is not too tired "oil is also a hydrocarbon".
3) The Weber DGV when fitted to a SIV manifold will likely give even lower
emmisions than the strombergs because the Weber DGV has an idle mixture
adjustment circuit, which is independant of the main mixture and can thus be
dialed in very closely. The Weber DGV should be exempt because it is a 64,
but if used on a 65+ model year, may qualify to be tested at a state run
refferee station. Once tested and qualified, the state installs a
specifications sticker for future testing at a non refferee station. It is
also possible that a lax or ignorant technician will accept your two barrel
progressive for two one barrel carbs. Who knows.
4) Overheating engines spew NOX emmisions and thus the will likely not pass
in states that have lower criteria for Oxides of Nitrogen.
5) All the above assumes that the timing and timing advance is correct, as
well as the fact that the engine is fairly fresh and reasonably stock.
I hope this helps some of you get your cars through the emmisions process.
Luckelly I'm exempt "For now!".
Jarrid Gross
SII EFI
This archive was generated by hypermail 2b30 : Tue Sep 05 2000 - 09:26:13 CDT