Hi,

So let me start off by saying I tested the compression and the adjusted the valves, cleaned the carburettors and got the car running fairly nicely. However I am getting little to no power at 3000 rpm+

My guess is that I have the timing set incorrectly and that the vacuum advance (which I had connected when setting the timing) is retarding the timing at idle giving me a false reading. Is this true? I have to go work on it this weekend. I noticed the timing advance goes up by almost 35* + when rpms increase in neutral.

Second.

I am not, for the life of me able to figure out how this manual downloaded at XenonS30 matches up with my car. The mixture screw is in a different location, the idle adjustment screws are different. I don't think I have the EGR control valve? or atleast dont have the valve in the same location.

Here is a picture of the cars engine:

I am just having the darndest time adjusting the carbs according to this manual with the different terms they use/different locations. Any help is appreciated. I have been working on this for awhile and have come pretty far from having a car that hasn't started for awhile.

Also I was wondering if there was a good stock setting for the mixture screws or do I have to adjust those according to how high the float bowl is before it shuts off according to this source: Technical Information Page ..... Carburation

-Eric

P.S. Why do I have the domed carbs when the 73's came with the flat top ones that people hated and called "boat anchors"?

Lastly, what does the round vacuum device just above the front carb do?

Edited June 24, 201410 yr by Thenervemann

The air galley, the metal tube running horizontally near the top of the photo, looks rusted out. If it's not leaking exhaust fumes yet, it probably will soon unless it's not as bad as it looks. A new one may be available if you want to keep it stock. Many have removed them and welded or plugged the holes in the exhaust manifold.

The air galley, the metal tube running horizontally near the top of the photo, looks rusted out. If it's not leaking exhaust fumes yet, it probably will soon unless it's not as bad as it looks. A new one may be available if you want to keep it stock. Many have removed them and welded or plugged the holes in the exhaust manifold.

Thanks a lot! ill keep it in mind.

Yes, the valve clearance is measured between the cam and rocker.

The number one cylinder is at the front of the car. The rest are in order going toward the back.

I prefer to measure the valve clearance one cylinder at a time following the firing order (153624).

Set the base timing to the '73 setting with the vacuum hose disconnected and plugged, and the idle at the specified RPM.

Thank you very much, I was looking for that answer.