|
|
Joined: Dec 2001
Posts: 12
Grease Monkey
|
OP
Grease Monkey
Joined: Dec 2001
Posts: 12 |
Glad to keep company with you gents, I've got a '34 Master sedan I've been trying to get some power out of. I think I've cleaned, timed, primed, tweaked everything just right but still not satisfied with power. I believe the advance is not advancing far enough or responding freely enough, 1/4"? It's a rebuilt diaphram and distributor moves freely. So my question is what vacuum should I have at the advance? I've got 14.5psi at the manifold and half of that at the advance. Any words of wisdom?
PS; know I have to learn what a UBB Code is all about!
Don V
|
|
|
|
|
Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
|
|
Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Hi Don V, Assuming that you have a timing light, don't worry about how much the vacuum is advancing the timing, but rather , check to see if you are getting any mechanical advance inside the distributor. You can also check this by visual inspection of the distributor, but to see if it actually is working is more important. For satisfactory engine performance you need both the mechanical and vacuum advance.  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
|
|
|
|
|
Joined: Nov 2001
Posts: 29,863
Tech Advisor ChatMaster - 25,000
|
|
Tech Advisor ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,863 |
Hey Don! Here are the specs. on your vacuum control: Model: 680 L Inches of HG. to start movement of plunger: 4.5 Inches of HG. for full plunger travel: 9-11 Total plunger travel (inches): 15/64 Maximum advance degrees (engine): 17 Maximum advance degrees (distributor): 8.5 I hope that this information helps you with your question. 
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
|
|
|
|
|
Joined: Dec 2001
Posts: 12
Grease Monkey
|
|
OP
Grease Monkey
Joined: Dec 2001
Posts: 12 |
Thanks gents, I'll check it out.
JYD must be one of those inginear type..."Without Data It's Just an Opinion"
Don V
|
|
|
|
|
Joined: Nov 2001
Posts: 29,863
Tech Advisor ChatMaster - 25,000
|
|
Tech Advisor ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,863 |
"Inginear"?? :confused: :confused: :confused: :confused: :confused:
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
|
|
|
|
|
Joined: Nov 2001
Posts: 72
Shade Tree Mechanic
|
|
Shade Tree Mechanic
Joined: Nov 2001
Posts: 72 |
Junkyard; He means Engineer. Inginear is pigeon english for Engineer. I learnt pigeon english up in Papua New Guinea,whilst hunting with my mate, crocodile dundee.  http://www.walindi.com/AboutPNG.html -------- Dictionary: 1880.—“… the English traders of the early days … instead of inducing the Chinese to make use of correct words rather than the misshapen syllables they had adopted, encouraged them by approbation and example, to establish Pigeon English—a grotesque gibberish which would be laughable if it were not almost melancholy.”—Capt. W. Gill, River of Golden Sand, i. 156.
|
|
|
|
|
Joined: Nov 2001
Posts: 29,863
Tech Advisor ChatMaster - 25,000
|
|
Tech Advisor ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,863 |
Thanks Standard34! Nope, I is no "inginear". Pigeon English huh? I have enough problems understanding real English, so now I have to deal with "Jive" and Pigeon English too! Now, dog language I can understand! Arf!!!!! :eek: :( :confused:  :p
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
|
|
|
|
|
Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
|
|
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Don, On my 34 Master is set the timing on the mark with the octane selector on zero and the advance the octane selector to 10 degrees advnced.This is as recommened in the manual if higher octane fuel is used.This makes a big improvement in power.The engine was designed to run on 70 octane gas.Also do the same on my 39 Chev. with the same results.
Gene Schneider
|
|
|
|
|
Joined: Dec 2001
Posts: 1,919
ChatMaster - 1,500
|
|
ChatMaster - 1,500
Joined: Dec 2001
Posts: 1,919 |
Hi Don,
There is also something else you need to check! I was having the same problem as you are. Are you using the correct 34 carb? If you are then you need to check the vacuum ports on the carb. I found a bulletin from Carter saying that they were having problems with the vacuum ports plugging up. You need to remove the 3 rivets and clean out the 2 ports. I'll tell you they were right!
|
|
|
|
|
