Any books on vacuum advance and timing???????
- Thread starter duster360
- Start date
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mguner
How many is too many?
I think several of us have written them on here..... ;)
3forty
"Raw Power"
Search FBO systems online
TrailBeast
AKA Mopars4us on Youtube
Books?
You have internet access, so every topic on the planet is available to you online.
Here is a good example http://www.mopar1.us/engine2.html
You have internet access, so every topic on the planet is available to you online.
Here is a good example http://www.mopar1.us/engine2.html
mad accountant
Well-Known Member
And there sure is a lot of crap and misinformation online as well as differences of opinions on the best method to use. Vacuum method of setting timing, seat of the pants method, ported or non-ported vacuum, performance tuning, MPG tuning, etc.
I, like the OP, would love to find a book that laid it all out in terms I can understand (took me several months before I figured out a dizzy was a distributor). Plus a book gives me a reference I can go to anytime without having to search for topics online. Old habits die hard I guess.
itate
Where is that wrench I just had in my hand?
If you are wanting a real book, I would recommend the Mopar Performance engines manual. It may not be the end all be all on tuning ignitions but is good reading. http://www.manciniracing.com/mo9thedensps1.html
TrailBeast
AKA Mopars4us on Youtube
Because we all know books are exempt from varying opinions and misinformation, right?
As with anything, you have to consider the source obviously.
67Dart273
Well-Known Member
And so far's I'm concerned, "it's not." I never even HEARD the term "dizzy" or "carby" until Al Gore's internet got wound up
So far as the FBO book, that is one "take." His thinking takes a complete turn-around from what I'm used to and what OEM "did" This in part might be why it's all so confusing.
Furthermore, "smog" strategy (emissions control) which occupied CA from 66, and Federal U.S. since 68 has muddied the water, as you have what is
best for mileage
best for all out performance
"best?" for emissions control.
AbodyJoe posted this I believe:
yup, everyones engine will be a little different...
here are a couple articles that are pretty decent on how to tune your distribitor for more performance.
TrailBeast
AKA Mopars4us on Youtube
If anyone recommends that you use the total timing method.... RUN!!!!
There isn't one strategy that works for every car. Set initial using the Vacuum method and it doesn't start when hot... what do you do? Setting timing lots of times is an exercise in compromises. Has to be a fluid approach.
I think it was mentioned, every engine is a little different. Any book numbers from mopar FSM won't be close to optimal, even for a stock engine in most every case.
Basically here's a simple method.
Set initial where engine wants it.
Find total number and tailor mechanical advance to hit that number.
Get springs that allow better curve.
Mess with Vacuum advance.
An engine that has a lean mixture requires more timing to "light" the lean mixture than an engine that is running rich. That's sort of where vac adv comes in. On cruise it adds timing so the mixture can be leaner. The trick - finding the balance. Another problem with vac adv is having the correct amount for the engine and having the right Vac Adv can or coming up with a method to pull timing out of the can.
There isn't one strategy that works for every car. Set initial using the Vacuum method and it doesn't start when hot... what do you do? Setting timing lots of times is an exercise in compromises. Has to be a fluid approach.
I think it was mentioned, every engine is a little different. Any book numbers from mopar FSM won't be close to optimal, even for a stock engine in most every case.
Basically here's a simple method.
Set initial where engine wants it.
Find total number and tailor mechanical advance to hit that number.
Get springs that allow better curve.
Mess with Vacuum advance.
An engine that has a lean mixture requires more timing to "light" the lean mixture than an engine that is running rich. That's sort of where vac adv comes in. On cruise it adds timing so the mixture can be leaner. The trick - finding the balance. Another problem with vac adv is having the correct amount for the engine and having the right Vac Adv can or coming up with a method to pull timing out of the can.
mad accountant
Well-Known Member
Because we all know books are exempt from varying opinions and misinformation, right?
As with anything, you have to consider the source obviously.
True enough. I figure that if someone went through all the time and expense of publishing and distributing an actual physical book, is able to sell them, goes through a couple of editions and /or printings, they have a little more credibility than anyone who knows how to post something online. Sometimes.
TrailBeast
AKA Mopars4us on Youtube
You are certainly right about that.
Problem is, the people with all the varying opinions did exactly that.
Now I'm just being a PIA.
Google knows everything there is to know, it's a matter of filtering sources and cross checking.
Awesome link. ..led me to find this page from their site...
http://www.mopar1.us/tech.html
Tons of good info. ...thanks for the lead....bookmarked!!!!!
Jeff
Thanks for the link!
For me the majority of my struggle was the terminology... all in, total timing etc. Without getting the timing figgered out I can't adjust carb. Carb was basically bolted on idle adjusted. And that's it. I be tweakin the dizzy too. Can't wait till spring!
Woods74
Broke Senior
You don't need a book.
Step 1:
Block vacuum advance off; Set initial timing 32-38 initial. Take trip to verify best performance. Fast burn heads take less timing!
Step 2:
Connect vacuum set 12-16 degrees for best economy. Add till it bucks, then back it off a couple degrees. This DOES NOT AFFECT PERFORMANCE! It falls off once you get above the RPM vacuum it takes to make it work.
Step 3:
Verify 46-52 total. Fast burn heads take less timing! Dun.
Step 1:
Block vacuum advance off; Set initial timing 32-38 initial. Take trip to verify best performance. Fast burn heads take less timing!
Step 2:
Connect vacuum set 12-16 degrees for best economy. Add till it bucks, then back it off a couple degrees. This DOES NOT AFFECT PERFORMANCE! It falls off once you get above the RPM vacuum it takes to make it work.
Step 3:
Verify 46-52 total. Fast burn heads take less timing! Dun.
Run that by me one more time!
67Dart273
Well-Known Member
Woods74
Broke Senior
^Yup, just because it's printed doesn't make it true. Take the Bible for instance... :cheers:
Mopar Action also had a pretty straightforward article. Still takes time and iterations, to get everything close.
moper
Well-Known Member
There are more than a few really good articles. You just need to come from the perspective of not looking for validation of what you want to do. There are many ways to skin this cat.
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