How Does Vacuum Advance Work? 12A - 13B Mazda RX7 Distributors 

Just a small correction brother, the SA 1980 distributor cap and rotor button is the same as the 81-85 model. The igniters are J106 models.

I know im late to the party, but Thank you for your knowledge!!

if you run trailing timing close to the leading timing so the ignition event happens almost on top of each other with no gap, gets you a little cleaner smelling exhaust and a smidge more throttle response.

Great video as usual. A NZ rotar tip I was told is to remove the metal cover under the dizzy as helps disapate heat, maybe make the ignition modules last longer.

I needed this I'm going carb on my fc and I'm tryna figure everything with it out so I appreciate it, I'm new to carb stuff and this was great

Love the content! That was very helpful and informational

Awesome video man all the information we could need.

I needed this!

Great video man!

Your the man! Thanks for making these videos!!

Love the vid! Would like a bit more explanation about why/when to lock the centrifugal advance and how you decide wether to run the vacuum advance.

Thank you good sir

I have a type 3 Distuributor and a Type 2 . The type 3 is the one that I am running. but the type 3 has the right area of timing between the gears without enough rotation in the distributor to get to the right timing in the right area. Using a vacuum pump advance the timing after starting. but trying several options without great result. Does not advance the 15 degrees that the book says it should. I tried a MSD 6 A _2 digital that should have a computer timing delay , but neither MSDF 6 box works with this engine. Any suggestions besides enlarging the adjustment hole.

Wouldn’t you want to hook up the pots to ported vacuum rather than manifold vacuum. Because if it’s hooked up to manifold then they would advanced the whole time, right?

When you set your timing at idle is that with vacuum advance pods hooked up? Thanks for the great videos!

I’ve got a sniper and it showed my timing bouncing from 15-36 degrees at idle why lol help it’s a full bridge 12a

great video as always! Ive got a gsl-se with a deleted rats nest. It runs great with vacuum advance pots disconnected and vacuum open to air. When I plug the vac port it idles too low and stalls, when i connect the vac pots it revs up to 3k on its own and doesnt respond. any thoughts?

When you say "more timing" you actually mean more advance on the timing, a small point, I think everyone knows what you mean. I have a stock 79 sa, I don't see any point in changing distributors because I had so many problems with the igniters on my 84. was stranded many times when they failed, and had to carry a spare with me. yeah, points wear and that throws off the timing, but it was the standard for a lot of years.

Do you know why there would be coolant on top of the engine? I have to keep refilling coolant from time to time.

I have a 82 and I can't get it to stay running! Rebuilt the carb new fuel pump n filter! It starts and runs for a minute or two and then just drops in rpm an kills any help/advise?

Advantages/Disadvantages of running zero split on leading/trailing? Im running it with an MSD on my 80. Still havent got the car to run to be drivable so I cant tell a difference lol.

Is there any websites that sell exterior parts for these cars like fenders and taillights?

my streetport 12A does that missing and bad fuel economy thing, but it ran like crap before I advanced the timing a bunch.

Looking for someone to work on my 1990 Rx7 gtu 13b not turbo in Peoria il. Just moved here can you help.