Ironracer
Gearhead
Nice. I had a '90 MP engine book. Loved it. It's long gone now. I don't know who stole itMe too. I still have my 70s Direct Connection book packed up somewhere.
Nice. I had a '90 MP engine book. Loved it. It's long gone now. I don't know who stole itMe too. I still have my 70s Direct Connection book packed up somewhere.
Keep an eye on Mancini's literature section. They sell the MP engine manuals CHEAP when they have them.Nice. I had a '90 MP engine book. Loved it. It's long gone now. I don't know who stole it
Right on Brother, Will Do! Thank You! Right now, I have Way more intense issues to deal with... like tryin' to keep my Address! And what hope I had for that is trashed, reversed and heading down the septic tank. I hate to say it but it's pay to play in Florida if you do not own the land that your home is on and you don't pay exactly what the people claim you owe they can do what's called a default judgment motion and get the judge to grant them possession of your home and get you out of it.... in 10 days. As long as they got a dirty *** lawyer with no morals. And no I'm not knocking lawyers..Keep an eye on Mancini's literature section. They sell the MP engine manuals CHEAP when they have them.
That’s usually because they are writing a magazine article and the only number that matters is the peak number on a dyno. Almost never does the “magazine build” get stuffed in a car and re-tuned for the streetYup,
VA is not understood. Not helped by ignorant magazine writers you talk about the 'feature' engine in their article, & mention the MSD or DUI dist they are using for free plug, but make no mention of VA.
I don’t want to get off topic here, but can you tell me which manuals are the ones you’re referring to? I’ve done some searches, and there are quite a few Mopar engine books available. Are there books published by Mopar that I can get, or just the ones I’ve found that don’t seem to come straight from Mopar and are written by other folks? Here are some I’ve found:Keep an eye on Mancini's literature section. They sell the MP engine manuals CHEAP when they have them.
Nope, but VA should be connected to a manifold source if you want everything in the list.
Everything You Wanted to Know About Vacuum Advance and Ignition TimingI want vacuum advance for,
Mileage
Throttle response
Cooler running
Idle quality
Best vacuum for accessories
Tunability if engine parts are changed
Did I miss anything ?
Nope, but VA should be connected to a manifold source if you want everything in the list.
You're describing general benefits of using vacuum advance.I want vacuum advance for,
Mileage
Throttle response
Cooler running
Idle quality
Best vacuum for accessories
Tunability if engine parts are changed
Did I miss anything ?
lead time is needed for maximum pressure during the maximum crank leverage.
Pingity, pingity, ping.Assuming that the typical 60's big block four barrel likes 50-60 degrees timing at a light throttle cruising condition, would you want that same amount of timing at idle too?
Idle is surprisingly high load, and before emissions concerns, fairly rich. The engine is producing very little torque at 500 or even 600 rpm. A percentage of that goes to overcoming friction. So best to think of it as a high load, somewhat rich and dense situation.Assuming that the typical 60's big block four barrel likes 50-60 degrees timing at a light throttle cruising condition, would you want that same amount of timing at idle too?
I asked in a FB mopar group a while back VA ported or not. The whole thing got pissy fast. I was surprised how many people don't, won't try to run manifold vacuum. 68 was the year Mopar changed over, 65 in Cali I think for emissions. I always run my street cars manifold VA and I know racers that use MV to keep their engine cooler between rounds.Fishmen,
It seems you might be unaware that Chrys used manifold connected VA to cool the engine?
For 1973-78:
' When engine coolant temps at idle reaches 225*f, the valve opens automatically & applies manifold vacuum directly to the distributor.....This increases engine idle speed & provides additional engine cooling.'
You want to think about why the idle speed increases.....