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Main : Mechanical : Engine A-series crank-trigger ignition

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A-series crank-trigger ignition
A-series crank-trigger ignitionPopular
SubmitterddgonzalMore Photos from ddgonzal   Last Update2003/2/4 7:09    Tell a friendTell a friend
Hits7383  Comments10    0.00 (0 votes)0.00 (0 votes)
This is from an A12. The front cover has the the timing sensor, water pump, cogged-tooth belt, pulley and the CDI.

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The comments are owned by the poster. We aren't responsible for their content.

Poster Thread
ang94541
Posted: 2003/2/5 9:52  Updated: 2003/2/5 9:52
No life (a.k.a. DattoMaster)
Joined: 1999/12/6
From: Castro Valley,CA USA
Posts: 1191
 Re: A-series crank-trigger ignition
My guess is that it replaces the points. There are only two cut-outs because 1-3-4-2 are 180 CRANK degrees apart. The distributor is probably retained to send the spark to the appropriate cylinder. This set up would eliminate the slop from the timing chain and distributor gear.

Poster Thread
feral
Posted: 2003/4/26 1:12  Updated: 2003/4/26 1:12
Home away from home
Joined: 2002/5/1
From: Millgrove Vic OZ
Posts: 985
 Re: A-series crank-trigger ignition
This is the same setup my A13 used. I am modifying a CA16 crank angle sensor to drive of the end of the cam where the mechanical tach drive was.

Poster Thread
matbighat
Posted: 2005/10/26 8:07  Updated: 2005/10/26 8:07
No life (a.k.a. DattoMaster)
Joined: 2001/1/30
From: California
Posts: 2973
 Re: A-series crank-trigger ignition
I wonder what the factory A-Series EFI used?

Poster Thread
ddgonzal
Posted: 2005/10/26 16:08  Updated: 2005/10/26 16:08
Moderator
Joined: 2001/5/3
From: 48 North
Posts: 31575
 Re: A-series crank-trigger ignition
Factory A-series EFI used a standard electronic distributor. No crank trigger. This is on the A14E and A15E which Nissan called "EGI".

Poster Thread
1200ute8u1
Posted: 2003/2/4 8:09  Updated: 2003/2/4 8:09
Home away from home
Joined: 2002/10/14
From: nsw,AUSTRALIA
Posts: 549
 Re: A-series crank-trigger ignition
alright get me the dumby's guide cus i dont have the foggiest wat it does i think it has some way of making the engine better and its a way of medering up you A-12 am i right







i just wana learn
as long as its not at mitchel high

Poster Thread
Matt
Posted: 2003/2/4 9:08  Updated: 2003/2/4 9:08
Home away from home
Joined: 2002/12/7
From: Christchurch, New Zealand
Posts: 208
 Re: A-series crank-trigger ignition
Basically as the cut outs pass the sensor the box is triggered like a coil to provide spark.

My question is, how does this system differentiate between TDC exhaust/inlet and TDC comp/firing is there something on the cam?
Also I take it this system is waste spark, I can only see two cut outs.

Poster Thread
Matt
Posted: 2003/2/4 9:28  Updated: 2003/2/4 9:28
Home away from home
Joined: 2002/12/7
From: Christchurch, New Zealand
Posts: 208
 Re: A-series crank-trigger ignition
How does it advance?

Poster Thread
stirlingmac
Posted: 2003/2/4 10:15  Updated: 2003/2/4 10:15
Home away from home
Joined: 2000/5/6
From: Wellington New Zealand
Posts: 962
 Re: A-series crank-trigger ignition
This is a vintage system, like all good old race engines running distributors the timing is fixed, ie in the the dizzy the weights are fixed and there is no advance curve at all. Same for this system. It looks like from the CDI pack it is a Nismo Ultra set up which is fairly rare...

Poster Thread
ddgonzal
Posted: 2003/2/5 5:25  Updated: 2003/2/5 5:25
Moderator
Joined: 2001/5/3
From: 48 North
Posts: 31575
 Re: A-series crank-trigger ignition
OK, so this replaces the distributor points (points-type distributor or the pickup in an electronic distributor).

Is the distributor still used to route the spark to the right plug? Or do they use four coils?