318 Upgrade
duckduckgo is better.
A forum search is better.
IMO the best starting point for research is from Ma Mopar herself.
Engine compartment may have a vacuum diagram and the original tune up information sticker.
Owners manual will (usually) have some very basic info and some diagrams.
Most of the good info is in the factory service manual (FSM), Technical Service Bulletins (TSB), and Master Technicians Service Conference(MTSC). If you want explanations, that's the focus of the MTSC.
Owner's manual if not with the car AFAIK you will have to find an original.
Shop manuals are reproduced both in paper and digitally. A fair number have been scanned and uploaded to MYmopar.com and are (or were) available for free download as pdf.
Many MTSC books and films are at that site as well. (or were, I didn't see them the other day)
They are also at the Imperial Club's website as page scans in jpg.
Master Technician Service Conference - Chrysler's Training for Mechanics
The Imperialclub is posting them as information and education only, no ads, so doubt they would be asked to take them down.
Digitized Technical Service Bulletins along with a lot Dealership info can be found in the The 1970 Hamtramck Registry Library Page (1970 - 1974)
Here's a '73 OSAC valve that was posted by another member.
And here's the carb that was on his 318.
Chrysler sometimes called the vacuum port 'timed' becaue it goes to the distributor.
Except with an OSAC it goes to the OSAC valve first. Bypassing the OSAC valve bypass the delay. I normally discourage bypassing emissions stuff as it usually doesnt effect performance on a stock engine. This one is an exception. See MTSC #308 to see how Chrysler tried to head off complaints about it at the time it was implemented.
How it works is explained on page 11 of the 1973 Chrysler Clean Air System Reference, MTSC Service Repair Book (Session 302)
What the guy is pointing to in the photo above is a vent to the vapor capture system. Except his is capped. Since you're using an open air filter I don't think it matters. In fact if the filters in the charcoal cannister have deteriorated, capping will keep charcoal from migrating into the fuel bowl. You still will need the cannister for the fuel tank venting.
I don't see a solenoid stop on the opposite side.
I do see a electric assisted well type choke with external vacuum qualifier. Those work well.
G**gle will never show you that stuff. At one time it might have. Those days are over.
duckduckgo is better.
A forum search is better.
IMO the best starting point for research is from Ma Mopar herself.
Engine compartment may have a vacuum diagram and the original tune up information sticker.
Owners manual will (usually) have some very basic info and some diagrams.
Most of the good info is in the factory service manual (FSM), Technical Service Bulletins (TSB), and Master Technicians Service Conference(MTSC). If you want explanations, that's the focus of the MTSC.
Owner's manual if not with the car AFAIK you will have to find an original.
Shop manuals are reproduced both in paper and digitally. A fair number have been scanned and uploaded to MYmopar.com and are (or were) available for free download as pdf.
Many MTSC books and films are at that site as well. (or were, I didn't see them the other day)
They are also at the Imperial Club's website as page scans in jpg.
Master Technician Service Conference - Chrysler's Training for Mechanics
The Imperialclub is posting them as information and education only, no ads, so doubt they would be asked to take them down.
Digitized Technical Service Bulletins along with a lot Dealership info can be found in the The 1970 Hamtramck Registry Library Page (1970 - 1974)
Here's a '73 OSAC valve that was posted by another member.
And here's the carb that was on his 318.
Chrysler sometimes called the vacuum port 'timed' becaue it goes to the distributor.
Except with an OSAC it goes to the OSAC valve first. Bypassing the OSAC valve bypass the delay. I normally discourage bypassing emissions stuff as it usually doesnt effect performance on a stock engine. This one is an exception. See MTSC #308 to see how Chrysler tried to head off complaints about it at the time it was implemented.
How it works is explained on page 11 of the 1973 Chrysler Clean Air System Reference, MTSC Service Repair Book (Session 302)
What the guy is pointing to in the photo above is a vent to the vapor capture system. Except his is capped. Since you're using an open air filter I don't think it matters. In fact if the filters in the charcoal cannister have deteriorated, capping will keep charcoal from migrating into the fuel bowl. You still will need the cannister for the fuel tank venting.
I don't see a solenoid stop on the opposite side.
I do see a electric assisted well type choke with external vacuum qualifier. Those work well.
