Nissan Optical CAS

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Categories: Engine Electrical System | Ignition Modifications

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Revision as of 08:35, 26 February 2015 ddgonzal (Talk | contribs) <- Previous diff		Current revision ddgonzal (Talk | contribs)
Line 1:		Line 1:
-	The famous E15ET turbo distributor used an optical crank angle sensor. It was used as a trigger for [[ECU]]-based electronic spark control	+	The famous E15ET turbo distributor fits in an A12 and uses an optical crank angle sensor (CAS). Optical CAS was used as a trigger for [[ECU]]-based electronic spark control. 280ZX Turbo used it as did S13 and many other Nissans.
	= Overview =		= Overview =
-	[http://datsun1200.com/uploads/newbb/174_4c7b4a0d71319.jpg D4P]	+	Nissan optical sensor & wheel
-	<br><img size=400>http://datsun1200.com/uploads/newbb/174_4c7b4a0d71319.jpg</img>	+	<br>{{Upload|174_4c7b4a0d71319.jpg}}
-	See [[D4P]]	+	{{SeeMainArticle!|Hitachi D4P Distributor}}
	Under the cover plate is a trigger wheel for the ECU.		Under the cover plate is a trigger wheel for the ECU.
-	<br>[http://datsun1200.com/uploads/newbb/thumbs/174_4c7b4a1edd218.jpg D4P]	+	<br>{{Upload|174_4c7b4a1edd218.jpg}}
-	<br><img size=400>http://datsun1200.com/uploads/newbb/thumbs/174_4c7b4a1edd218.jpg</img>	+
	<br>Photo: Mitsubishi T4T84471 6626, Nissan 22100-27M15 from USA 1987 KPB12		<br>Photo: Mitsubishi T4T84471 6626, Nissan 22100-27M15 from USA 1987 KPB12
	The crank angle sensor is a thin aluminum disc, which is actually perforated 360 times. In this photo you can make out the screw under the disc, seen through the perforations.		The crank angle sensor is a thin aluminum disc, which is actually perforated 360 times. In this photo you can make out the screw under the disc, seen through the perforations.
-	<br>[http://datsun1200.com/uploads/newbb/174_4c7f162a50005.jpg D4P]	+	<br>{{Upload|174_4c7f162a50005.jpg}}
-	<br><img size=400>http://datsun1200.com/uploads/newbb/174_4c7f162a50005.jpg</img>	+
	<br>retouched photo (marked to show degrees)		<br>retouched photo (marked to show degrees)
	Note the second (inner) row of perforations. These are the Cam position marks.		Note the second (inner) row of perforations. These are the Cam position marks.
-	= CAS =	+	The photosensor is a Mitsubishi unit that read light pulse through the slits in the trigger wheel
		+	<br>{{Photo2|KA24E_CAS.jpg}}
		+
		+	= E-series CAS =
	A.k.a. Crankshaft Position Sensor (CPS).		A.k.a. Crankshaft Position Sensor (CPS).
		+
		+	Fits in Datsun 1200 engine. Only the A12 distributor gear needs to be swapped. For A14/A15 and newer A12, the hold-down needs to be modified
		+
		+	E16I throttle-body fuel injection
		+	E15ET EGI multi-port fuel injection
	MITSUBISHI Crank Angle Sensor J912 (NISSAN 22100-53J11)		MITSUBISHI Crank Angle Sensor J912 (NISSAN 22100-53J11)
-	<br>http://datsun1200.com/uploads/newbb/174_4c7f164e33b15.jpg	+	<br>{{Upload|174_4c7f164e33b15.jpg}}
	STANDARD MOTOR PRODUCTS # LX653		STANDARD MOTOR PRODUCTS # LX653
Line 44:		Line 50:
	and many more Nissan		and many more Nissan
-	= S13 =	+	= S13 CAS =
		+	== SR20 ==
		+	J920 sensor
		+	J565A sensor
		+
		+	Two version: CAS vs CAS/Distributor. The Turbo CAS for [[COP|Coil-On-Plug]] ignition
		+	<br>{{Photo!|ssts-1120-10installing-aem-ems-4crank-angle-sensor.jpg}}
		+
		+	[http://datsun1200.com/modules/newbb/viewtopic.php?post_id=389756#forumpost389756 SR20 CAS] converted for use with A-series engine.
		+	<br>{{Upload|thumbs/14977_4ecedc7624fbd.jpg}}
		+
		+	The SR shaft is longer than the A-series distributor
		+	<br>{{PhotoPost|67E40960-C0CF-4902-8BA6-B047769BB184.jpg|464227|Datsun%201200/wiki}}
		+
		+	The gear needs to be swapped
		+	<br>{{PhotoPost|22C14069-A332-49E4-8C1C-C619B9D026C9.jpg|464227|Datsun%201200/wiki}}
		+
		+	Mods likely include: 1) Shortening shaft and 2) shortening housing
		+	<br>{{Photo!|67E40960-C0CF-4902-8BA6-B047769BB184_.jpg}}
		+
		+	SR20 CAS unit disassembled<br>
		+	{{PhotoPost|B7434629-3669-40AE-95C0-CBCB7690E4BE.jpg|464227|Datsun%201200/wiki}}
		+
		+	RWD SR20DET bolts to front left side of head (RS13 engine shown)
		+	<br>{{Album|3760}}
		+
		+	FWD SR20DE bolts to back of head (GRi-R shown)
		+	<br>{{Photo!|AWDSC00018.jpg}}
		+
		+	== KA24DE ==
		+	[[KA]] is an L-series descendent so uses a distributor like the L20B but with a gear on the end.
		+
		+	Has an 8-2-2-2 slit wheel.
	J563 S13 KA24		J563 S13 KA24
Line 51:		Line 89:
	STANDARD MOTOR PRODUCTS LX653		STANDARD MOTOR PRODUCTS LX653
-	J917 CA18DE	+	== CA18DET ==
		+	[http://datsun1200.com/modules/newbb/viewtopic.php?post_id=377467#forumpost377467 J917 CA18DE]
		+	<br>{{Upload|thumbs/737_4e2ec8c5cb4dd.jpg}}
		+
		+	Mounts on the front of the CA18, directly at the end of the left camshaft
		+	<br>{{Photo!|page_2.jpg}}
		+
		+	1988 Nissan Pulsar NX with CA18DE engine
		+	[http://www.rockauto.com/catalog/x,carcode,1212444,pgname,Ignition RockAuto.com]
		+	* Nissan 23731-85M10
		+	* STANDARD MOTOR PRODUCTS PC25 (CPS)
		+	* CARDONE 84S5405/31S5405 (from 6/88)
		+	* Spectra NS52
		+	* AIRTEX / WELLS 5S1393
		+
		+	{{UploadPost|thumbs/174_56935d2f36adc.jpg|475290}} {{UploadPost|thumbs/174_56935d3aadf6c.jpg|475290}} {{UploadPost|thumbs/174_56935d466a06e.jpg|475290}}
		+
		+	= FJ CAS =
		+	<blockquote>[http://datsun1200.com/modules/newbb/viewtopic.php?post_id=358154#forumpost358154 rally1200]:
		+	the FJ20 dissy has 2 outputs
		+	<br> <br>
		+	1. 4 pulses per revolution <br>
		+	2. Reference lots of pulses (360?) per revolution (don’t use)
		+	<br> <br>
		+	for my setup i had to drill a small hole in the optic plate to create a 5 pulse next to number 1 pulse (easily done)</blockquote>
		+
		+	= Wheels =
		+	Nissan discs vary by CPS (inner ring).
		+
		+	* 4-2-2-2 wheel FJ, KA and E engines
		+	* 16-12-8-4 wheel: SR, CA18 engines
		+	* varying-slot wheel: Mitsu engines
		+
		+	16-12-8-4 wheel
		+	<br>{{Photo!|Dizzy001.jpg}}
		+
		+	4-2-2-2 (?) wheel S13 KA24DE vs SR20DE
		+	<br>{{Photo!|20140529_142512.jpg|wiki}}
		+
		+	FJ20ET wheel has extra round holes
		+	<br>{{Photo!|Dizzy004.jpg}}
		+
		+	Circular Center hole wheel
		+	<br>{{Photo!|645195.jpg}}
		+
		+	Aftermarket low-resolution (GM pattern) wheel
		+	<br>{{Photo2|24-2_wheel.jpg}}
		+	<br>"missing tooth" 12-1 at "crank" speed (24-2 wheel)
	= Mitsubishi Engines =		= Mitsubishi Engines =
	4G63 sensor J918 - 1990-1994 Mitsubishi & 1992-1995 Hyundai Elantra		4G63 sensor J918 - 1990-1994 Mitsubishi & 1992-1995 Hyundai Elantra
-	<br> <img size=300>http://pictures.nsfabrication.com/d/8492-1/IMG_5999.JPG</img>	+	<br> {{Photo!|IMG_5999.jpg}
	<br>1.8, 2.0 & 2.4 DOHC Sirius 4G6 engines		<br>1.8, 2.0 & 2.4 DOHC Sirius 4G6 engines
	6G72 sensor 928 - notice the wheel has a different pattern from the 4-cylinder.		6G72 sensor 928 - notice the wheel has a different pattern from the 4-cylinder.
-	<br>http://pictures.nsfabrication.com/d/8513-1/ignctrl_cas1.jpg	+	<br>{{Photo!|ignctrl_cas1.jpg}}
	<br>CPS 'T1T49371 R' from Mitsubishi 3000 GT		<br>CPS 'T1T49371 R' from Mitsubishi 3000 GT
-		+	H
	Constant-pattern trigger wheels - similar to the Nissan wheel - are available from the aftermarket.		Constant-pattern trigger wheels - similar to the Nissan wheel - are available from the aftermarket.
Line 72:		Line 157:
	= Using With A-series =		= Using With A-series =
-	D4P can be used as a trigger for ECU-based electronic spark control and for fuel injection.	+	E-series distributor with CASE can be used as a trigger for ECU-based electronic spark control and for Sequential fuel injection.
-	See [[D4P]]	+	See [[D4P]]
-	= Control Box =	+	CA or SR CAS can be custom-fitted to an old A-series distributor (and then [[Crank Trigger]] ignition will be required, since you no longer have a working distributor).
		+	CA CAS grafted to A-series distributor
		+	<br>{{Album|14895}}
		+
		+	SR CAS can be modified to fit into the A-series distributor spot. See [[#SR]] section above.
		+
		+	= Coil On Plug =
		+	Cam Angle Sensor is required for Coil-On-Plug ignition.
		+
		+	See main article: [[COP]]
		+
		+	Distributor-less Multi-coil ignition does not require CAS. See [[Crank Trigger]]
		+
		+	= Control Box =
	== Nissan ==		== Nissan ==
	A stock Nissan ECU can be used with an A-series engine. Use it with all the stock [[Fuel Injection]] parts from the donor Nissan. For spark-only control, leave the injector harness unplugged. Custom spark maps cab be programmed.		A stock Nissan ECU can be used with an A-series engine. Use it with all the stock [[Fuel Injection]] parts from the donor Nissan. For spark-only control, leave the injector harness unplugged. Custom spark maps cab be programmed.
	== MegaSquirt ==		== MegaSquirt ==
-	Nissan optical CAS/CPS unit can be used to trigger MegaSquirt ECU for electronic spark control of coil packs. MegaSquirt II with the latest firmware download can use the stock Nissan trigger wheels, while other brands of ECU generally require a swap to a special low resolution trigger wheel.	+	MegaSquirt III supports Nissan Optical CAS, with the latest firmware download.
		+
		+	MegaSquirt 2 partially supports Nissan optical wheels, for use with ignition timing (support for spark maps and coil packs). For actual CAS portion, an aftermarket low-resolution wheel is required.
		+
		+	Nissan optical CAS/CPS unit can be used to trigger MegaSquirt ECU for electronic spark control of coil packs and for batchfire EFI. MegaSquirt III with the latest firmware download can use the stock Nissan trigger wheels to support sequential fuel injection and/or Coil-On-Plug.
		+
		+	{{SeeMainArticle!|COP}}
		+
		+	[https://www.diyautotune.com/product/50-mm-optical-trigger-wheel-for-nissan-sr20det-or-ka24de DIYAutoTune Nissan wheels]
		+
		+	Aftermarket 50mm GM-pattern trigger wheel for Nissan CAS
		+
		+	* KA and SR engines
		+	* Some SR uses 54mm wheel
		+	* Some KA24E uses 54mm wheel
		+	* Does not fit CA, RB or VG engine
-	It may also be used for sequential fuel injection.	+	Can also be used with MS-III, although the stock Nissan wheel works with MegaSquirt 3 now.
	== Haltech ==		== Haltech ==
-	Haltech supports Nissan Optical CAS.	+	Newer model Haltech ECUs supports Nissan Optical CAS.
	[[Category:Engine Electrical System]]		[[Category:Engine Electrical System]]
-	[[Category:Ignition Modifications]]	+	[[Category:Ignition Modifications]]{{End}}

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Current revision

The famous E15ET turbo distributor fits in an A12 and uses an optical crank angle sensor (CAS). Optical CAS was used as a trigger for ECU-based electronic spark control. 280ZX Turbo used it as did S13 and many other Nissans.

Contents 1 Overview 2 E-series CAS 3 S13 CAS 3.1 SR20 3.2 KA24DE 3.3 CA18DET 4 FJ CAS 5 Wheels 6 Mitsubishi Engines 7 Using With A-series 8 Coil On Plug 9 Control Box 9.1 Nissan 9.2 MegaSquirt 9.3 Haltech

Overview

Nissan optical sensor & wheel
Upload click to view

Under the cover plate is a trigger wheel for the ECU.
Upload click to view
Photo: Mitsubishi T4T84471 6626, Nissan 22100-27M15 from USA 1987 KPB12

The crank angle sensor is a thin aluminum disc, which is actually perforated 360 times. In this photo you can make out the screw under the disc, seen through the perforations.
Upload click to view
retouched photo (marked to show degrees)

Note the second (inner) row of perforations. These are the Cam position marks.

The photosensor is a Mitsubishi unit that read light pulse through the slits in the trigger wheel

E-series CAS

A.k.a. Crankshaft Position Sensor (CPS).

Fits in Datsun 1200 engine. Only the A12 distributor gear needs to be swapped. For A14/A15 and newer A12, the hold-down needs to be modified

E16I throttle-body fuel injection
E15ET EGI multi-port fuel injection

MITSUBISHI Crank Angle Sensor J912 (NISSAN 22100-53J11)
Upload click to view

STANDARD MOTOR PRODUCTS  # LX653
Rock auto
Fits:
1987-1994 Subaru DL/GL/Loyal
1987-1989 Subaru XT
1993-1998 Mercury Villager 3.0
1991-1994 Infiniti G20 SR20DE
1988-1990 Isuzu Trooper 2.6/2.8
1984-1986 Nissan S12 200SX CA18ET
1989-1990 Nissan S13 240SX KA24E
1981-1983 Nissan S130 280ZX Turbo
1984-1989 Nissan Z31 300ZX VG30/VG30T
1986 Nissan 720 Z24I
1990 Nissan Axxess KA24E
1986-1994 Nissan D21 Z24I, VG30, KA24
1985-1994 Nissan Maxima VG30E
1992-1993 Nissan NX GA16DE, SR20DE
and many more Nissan

S13 CAS

SR20

J920 sensor
J565A sensor

Two version: CAS vs CAS/Distributor. The Turbo CAS for Coil-On-Plug ignition

SR20 CAS converted for use with A-series engine.
Upload click to view

The SR shaft is longer than the A-series distributor
Post click for topic

The gear needs to be swapped
Post click for topic

Mods likely include: 1) Shortening shaft and 2) shortening housing

SR20 CAS unit disassembled
Post click for topic

RWD SR20DET bolts to front left side of head (RS13 engine shown)
Album 3760

FWD SR20DE bolts to back of head (GRi-R shown)

KA24DE

KA is an L-series descendent so uses a distributor like the L20B but with a gear on the end.

Has an 8-2-2-2 slit wheel.

J563 S13 KA24
Ignition Optic Sensor Kit
BECK/ARNLEY 1800233
STANDARD MOTOR PRODUCTS LX653

CA18DET

J917 CA18DE
Upload click to view

Mounts on the front of the CA18, directly at the end of the left camshaft

1988 Nissan Pulsar NX with CA18DE engine
RockAuto.com
* Nissan 23731-85M10
* STANDARD MOTOR PRODUCTS PC25 (CPS)
* CARDONE 84S5405/31S5405 (from 6/88)
* Spectra NS52
* AIRTEX / WELLS 5S1393

Post 475290 Post 475290 Post 475290

FJ CAS

rally1200: the FJ20 dissy has 2 outputs

1. 4 pulses per revolution
2. Reference lots of pulses (360?) per revolution (don’t use)

for my setup i had to drill a small hole in the optic plate to create a 5 pulse next to number 1 pulse (easily done)

Wheels

Nissan discs vary by CPS (inner ring).

*   4-2-2-2 wheel FJ, KA and E engines
* 16-12-8-4 wheel: SR, CA18 engines
* varying-slot wheel: Mitsu engines

16-12-8-4 wheel

4-2-2-2 (?) wheel S13 KA24DE vs SR20DE

FJ20ET wheel has extra round holes

Circular Center hole wheel

Aftermarket low-resolution (GM pattern) wheel

"missing tooth" 12-1 at "crank" speed (24-2 wheel)

Mitsubishi Engines

4G63 sensor J918 - 1990-1994 Mitsubishi & 1992-1995 Hyundai Elantra
{{Photo!|IMG_5999.jpg}
1.8, 2.0 & 2.4 DOHC Sirius 4G6 engines

6G72 sensor 928 - notice the wheel has a different pattern from the 4-cylinder.

CPS 'T1T49371 R' from Mitsubishi 3000 GT H Constant-pattern trigger wheels - similar to the Nissan wheel - are available from the aftermarket.

Information on using with MegaSquirt ECU. http://forums.turbobricks.com/showthread.php?t=224740

Red +12v
Black  Ground
White Cam signal
Yellow Crank signal

Using With A-series

E-series distributor with CASE can be used as a trigger for ECU-based electronic spark control and for Sequential fuel injection.

See D4P

CA or SR CAS can be custom-fitted to an old A-series distributor (and then Crank Trigger ignition will be required, since you no longer have a working distributor).

CA CAS grafted to A-series distributor
Album 14895

SR CAS can be modified to fit into the A-series distributor spot. See #SR section above.

Coil On Plug

Cam Angle Sensor is required for Coil-On-Plug ignition.

See main article: COP

Distributor-less Multi-coil ignition does not require CAS. See Crank Trigger

Control Box

Nissan

A stock Nissan ECU can be used with an A-series engine. Use it with all the stock Fuel Injection parts from the donor Nissan. For spark-only control, leave the injector harness unplugged. Custom spark maps cab be programmed.

MegaSquirt

MegaSquirt III supports Nissan Optical CAS, with the latest firmware download.

MegaSquirt 2 partially supports Nissan optical wheels, for use with ignition timing (support for spark maps and coil packs). For actual CAS portion, an aftermarket low-resolution wheel is required.

Nissan optical CAS/CPS unit can be used to trigger MegaSquirt ECU for electronic spark control of coil packs and for batchfire EFI. MegaSquirt III with the latest firmware download can use the stock Nissan trigger wheels to support sequential fuel injection and/or Coil-On-Plug.

DIYAutoTune Nissan wheels

Aftermarket 50mm GM-pattern trigger wheel for Nissan CAS

• KA and SR engines
• Some SR uses 54mm wheel
• Some KA24E uses 54mm wheel
• Does not fit CA, RB or VG engine

Can also be used with MS-III, although the stock Nissan wheel works with MegaSquirt 3 now.

Haltech

Newer model Haltech ECUs supports Nissan Optical CAS. 

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