|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
08-29-2010, 11:42 AM | #1 |
Senior Member
|
Zenith 19322 Carb Users - report and question
Hi All:
I purchased the zenith 19322 as suggested by many and installed it on my tudor. All the backfiring, popping, etc ceased with the new carb. Ran it over 16 miles as a test. Seems good but in need of tweeking. Here are a couple of issues which may or may not be carb related. First, it will not idle properly with both the advance and gas levers up. Seems to idle ok with the gas lever about 20% down and the advance slightly down - stalls out at stop signs other wise. Secondly, I needed to have the advance all the way down to have any significant power and then could only get a top speed of around 45 on level ground - 40 going up a overpass. My two other drivers hit the 57-60 mph range. I suspect there are two factors involved - timing and carb adjustment. Any advice from zenith 19322 carb users on adjustment of the carb. Of course I'll recheck the timing, points, and plugs. Thanks in advance. |
08-29-2010, 12:44 PM | #2 |
Banned
Join Date: May 2010
Location: Sturgeon Bay, Wisconsin
Posts: 408
|
Re: Zenith 19322 Carb Users - report and question
"stalls out at stop signs" FLOAT LEVEL TOO LOW, STARVES THE MAIN JET "other wise. Secondly, I needed to have the advance all the way down to have any significant power and then could only get a top speed of around 45 on level ground - 40 going up a overpass." CHECK MARCO's TIMING OF THE 'A', BUT SET THE POINT GAP AT 0.20 FIRST. SO 35 MPH~45 MPH DOES NOT REQUIRE FULL ADVANCE. SAVE THAT FOR HIGH SPEEDS. MAYBE??? HOW'S IT IDLE AT FULL RETARD?
skip. |
Sponsored Links (Register now to hide all advertisements) |
|
08-29-2010, 01:36 PM | #3 |
Senior Member
Join Date: May 2010
Location: Connecticut
Posts: 272
|
Re: Zenith 19322 Carb Users - report and question
Hi Domino, I assume your basic set timing is dead on, that is lever all the way up, 0 deg. TDC, by the book. Now, your rich mixture screw is too lean. That's the "T" screw on the bottom of the carb. Run the engine at as high a race as you dare, and UNSCREW the rich mixture until the engine picks up speed and runs smoothly. Also, your idle mixture is too lean. Set the throttle shaft stop screw to as slow an idle is you can, then SCREW IN the idle mixture screw until the engine picks up speed, and then begins to falter. Back the screw off until the engine runs smoothly again. It is possible that you will also have to re-adjust the throttle shaft stop screw. Happy Motoring!
|
08-29-2010, 02:06 PM | #4 |
Senior Member
|
Re: Zenith 19322 Carb Users - report and question
I think it's timing. While the new carb will not give the performance of a well rebuilt original there is no way you should have as poor of performance as you are.
__________________
What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II |
08-29-2010, 02:36 PM | #5 | |
Senior Member
Join Date: May 2010
Location: The sticks of east Texas
Posts: 474
|
Re: Zenith 19322 Carb Users - report and question
Quote:
The difference is so minimal as to be unobservable anywhere but on an engine dyno. Do you really believe you can feel a one horsepower difference? Not to mention there are relatively few "well rebuilt original" carbs out there. |
|
08-29-2010, 02:50 PM | #6 | ||
Senior Member
|
Re: Zenith 19322 Carb Users - report and question
Sponsored Links (Register now to hide all advertisements)
Quote:
Quote:
It's your money spend it as you wish!!! Along with the instructions above I found this from Steve S.
__________________
What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II Last edited by Mike V. Florida; 08-29-2010 at 03:04 PM. |
||
08-29-2010, 04:34 PM | #7 | |
Senior Member
Join Date: May 2010
Location: The sticks of east Texas
Posts: 474
|
Re: Zenith 19322 Carb Users - report and question
Quote:
You said "the new carb will not give the performance of a well rebuilt original". That is true but implies that there is a significant difference. Misleading, I said "The difference is so minimal as to be unobservable anywhere but on an engine dyno." . That is ALSO true, the difference being of no real consequence. No argument with the rest: i.e., the problem likely being an ignition timing problem. |
|
08-29-2010, 05:10 PM | #8 | |
Senior Member
|
Re: Zenith 19322 Carb Users - report and question
What!!!!!
Quote:
If I meant that the new carb was much worse then the old then that would have been his problem. I would not have mentioned timing at all as the problem. You need to take the WHOLE conversation in context and stop reading specific words!
__________________
What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II |
|
08-29-2010, 06:04 PM | #9 |
Senior Member
Join Date: May 2010
Location: The sticks of east Texas
Posts: 474
|
Re: Zenith 19322 Carb Users - report and question
Yes,a good suggestion: go back and read the entire thread. I did. And nowhere did I see Domino say that any decrease in performance had occurred. In fact, just the opposite: "All the backfiring, popping, etc ceased with the new carb. Ran it over 16 miles as a test. Seems good but in need of tweeking."
Then the attempts at helping diagnose the problem, most, including yours, pointed at the ignition as the source of the problem. But you had to throw in the misleading statement "the new carb will not give the performance of a well rebuilt original" as if that could account for something. My response was essentially: nonsense, since the difference was too small to account for anything, and likely just the opposite (i.e., the belief that few old Zenith carbs are truly "well rebuilt", which sure seems the case with Domino's car). If you had said instead "the carb in all likelihood has nothing to do with it.', I would have had no complaint. What I take umbrage at is the often-made point that NOTHING new is as good as what was originally put on the A. There are MANY parts of an A that are simply the best of 1929 technology, technology that later years of automotive design and production improved over and over again. That doesn't mean that everyone should jump up and go change everything on their A since a big part of the allure is, in fact, making the car as good as it can be with the 1929 technology! I believe we can all agree that when EVERYTHING is restored perfectly, it all really does work quite well. But I offer to you that there aren't many A's out there which can't benefit by some later technology, the new Zenith carb being one. |
|
|
Sponsored Links (Register now to hide all advertisements) |
|