Cut off problem in 1980 SA (Only when hot)
09-27-10, 06:36 PM
#28
Back on the Road
Join Date: Jul 2007
Location: Austin
Posts: 355
Likes: 0
Received 0 Likes
on
0 Posts
Problem solved. I did what I thought might work. Adjusted the idle to 1500 so someone wouldn't feather it. Then turned the distributor between the marks. Found out I went the wrong way. Then moved it the other direction about the same distance. Tightened it down.
While it was running I tried to remove the vacuum line, no can do, it was good.
Readjusted the idle to 750. Tested timing again and it was perfectly centered on the cut out.
My guess is that I had the timing so retarded that it snuffed out the engine at lower RPMs.
And it starts great when its hot, of course its no longer 100º.
I really have no idea how the car ran before, maybe some sort of dieseling. There wasn't a leading pickup to speak of and the trailing was 1/2 inch from the rotator.
While it was running I tried to remove the vacuum line, no can do, it was good.
Readjusted the idle to 750. Tested timing again and it was perfectly centered on the cut out.
My guess is that I had the timing so retarded that it snuffed out the engine at lower RPMs.
And it starts great when its hot, of course its no longer 100º.
I really have no idea how the car ran before, maybe some sort of dieseling. There wasn't a leading pickup to speak of and the trailing was 1/2 inch from the rotator.
09-27-10, 07:21 PM
#29
Actin Like I'm Drunk
Thread Starter
iTrader: (4)
Join Date: Jul 2007
Location: Charleston, South Carolina
Posts: 1,663
Likes: 0
Received 0 Likes
on
0 Posts
That's good. I have a GSL-SE parts car.
Can i delete the ignitor box and swap over the GSL-SE ignition stuff and still get it to run until I get the direct ignition set up?
Can i delete the ignitor box and swap over the GSL-SE ignition stuff and still get it to run until I get the direct ignition set up?
09-27-10, 09:25 PM
#30
Actin Like I'm Drunk
Thread Starter
iTrader: (4)
Join Date: Jul 2007
Location: Charleston, South Carolina
Posts: 1,663
Likes: 0
Received 0 Likes
on
0 Posts
Alright, I'm still searching around, but is the how much different is the 84-85 12a ignition is compared to the 84-85 13b's ignition?
09-28-10, 11:36 AM
#31
Problem solved. I did what I thought might work. Adjusted the idle to 1500 so someone wouldn't feather it. Then turned the distributor between the marks. Found out I went the wrong way. Then moved it the other direction about the same distance. Tightened it down.
While it was running I tried to remove the vacuum line, no can do, it was good.
Readjusted the idle to 750. Tested timing again and it was perfectly centered on the cut out.
My guess is that I had the timing so retarded that it snuffed out the engine at lower RPMs.
And it starts great when its hot, of course its no longer 100º.
I really have no idea how the car ran before, maybe some sort of dieseling. There wasn't a leading pickup to speak of and the trailing was 1/2 inch from the rotator.
While it was running I tried to remove the vacuum line, no can do, it was good.
Readjusted the idle to 750. Tested timing again and it was perfectly centered on the cut out.
My guess is that I had the timing so retarded that it snuffed out the engine at lower RPMs.
And it starts great when its hot, of course its no longer 100º.
I really have no idea how the car ran before, maybe some sort of dieseling. There wasn't a leading pickup to speak of and the trailing was 1/2 inch from the rotator.
Rotaries will 'run' across an amazingly wide range of timings... but they only run well within a much narrower band.
Much of it is due to the long, thin combustion chamber, which provides something like 40 or 50 degrees of rotor rotation in which an ignition event will produce some sort of forward momentum. Translated into shaft rotation at 3:1 and taking into account two rotors, that's something like two overlapping 140-degree sectors of shaft rotation within which making the gas go 'boom' will move things forward.
Just not real well.
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
msilvia
3rd Generation Specific (1993-2002)
15
09-11-15 12:13 PM
