Mazda rotary engine swap

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Printable version | Disclaimers | Privacy policy | Current revision
Categories: Engine Modifications | Engine Swaps

---

Revision as of 23:04, 15 October 2016 ddgonzal (Talk | contribs) (->Rotary-Powered Datsun 1200 photo index) <- Previous diff		Current revision ddgonzal (Talk | contribs) (->Builds)
Line 1:		Line 1:
-	The Mazda rotary engine is a good match for Datsun 1200 -- it is light and compact. It makes more power than a piston engine of the same size and weight. The engine weight is down low so it doesn't interfere with good handling.	+	The Mazda [[rotary]] engine is a good match for Datsun 1200 -- it is light and compact. It makes more power than a piston engine of the same size and weight. The engine weight is down low so it doesn't interfere with good handling.
		+	<br>{{Album|15230}}
	= Performance =		= Performance =
-	Also See: [[wikipedia:Mazda Wankel engine]]	+	Also See: {{wiki|Mazda Wankel engine}}
	Typical engine power in stock form:		Typical engine power in stock form:
Line 11:		Line 12:
	* 13B-MSP (RX-8) 237 hp USA, 191-250 hp world		* 13B-MSP (RX-8) 237 hp USA, 191-250 hp world
-	{{Album|13279}}	+	{{Album|13279}} {{AlbumH|18584|jpg|284}}
	Quarter Mile acceleration performance ranges from quick to insanely quick. With a totally stock rotary engine you won't be wanting for power.		Quarter Mile acceleration performance ranges from quick to insanely quick. With a totally stock rotary engine you won't be wanting for power.
Line 21:		Line 22:
	Rotor Power		Rotor Power
-	<br>{{Album|6353}}	+	<br>{{AlbumH|6353|jpg|266}} {{Album|22484}}
		+
		+	= Overview =
		+	Search Club!: {{search.me|rotary}} {{search.me|10A}} {{search.me|12A}} {{search.me|13B}}
		+	Image search: {{images|Rotary+Datsun+1200|Rotary Datsun 1200}}
		+	Video search: {{Videos|rotary+Datsun+1200|Rotary Datsun 1200}}
		+
		+	* [[#Differential]] suitable for torque of engine
		+	* [[Radiator Upgrades|Radiator Upgrade]] suitable for the HP of the engine
		+	* Mazda engine & transmission
		+	** Modify crossmember & fabricate new mounts
		+	** Custom gearbox mount
		+	** Oil pan to suit 1200
		+	** Bigger tunnel to fit the Mazda transmission
		+	** Custom exhaust
		+	** Custom turbo manifolds (for 13BT)
		+	** Shifter relocation forward
		+	* [[#Driveshaft|Tailshaft]], custom
		+
		+	{{UploadPostH|9658_5097cd22a8724.jpg|422392|299}} {{UploadPost|9658_5097cd525d37a.jpg|422392}} {{UploadPost|9658_5097cdd4360f0.jpg|422392}}
		+
		+	13BT in Sunny B310
		+	<br>{{Album|18819}} {{Album|18818}}
		+
		+	= Engine =
		+	The Mazda rotary comes in two common sizes: 12A and 13B. In Australia, choose a 10A for street legal swaps. Everyone else, choose the 13B. There are less common versions, the old 10A and the ultra-rare and expensive 20B triple rotor.
		+
		+	Custom [http://datsun1200.com/modules/newbb/viewtopic.php?post_id=422658#forumpost422658 Single Rotor rotary engine] (pictured in Datsun 1000)
		+	<br>{{UploadPost|737_509b32a9eaf86.jpg|422658}}
		+
		+	12A (1146 cc, equivalent to 2.4 liter piston engine)
		+	<br>{{PhotoPost|12A-1.jpg|88772|wiki}} {{Album|19408|jpg|400}}
		+
		+	Mazda 13B (1308 cc, equivalent to 2.6 liter piston engine) carbureted
		+	<br>{{Album|158}} {{AlbumH|8555|jpg|300}}
		+
		+	13B Fuel Injected
		+	<br>{{Album|15021|jpg|400}}
		+
		+	Mazda 13B Turbo rotary engine
		+	<br>{{Album|93|jpg|400}}
		+
		+	Mazda 13B Turbo Factory EFI
		+	<br>{{Album|2050}}
		+
		+	13B Turbo with factory intercooler
		+	<br>{{Album|3008}}
		+
		+	20B triple rotor
		+	<br>{{Album|14572}} {{UploadPost|174_5858bfca31446.jpg|482854}} {{PhotoPost|IMG_1142.jpg|206350|wiki}} {{PhotoPost|IMG_1150.jpg|206350|wiki}}
		+
		+	13B carbureted
		+	<br>{{Album|15587|jpg|400}}
	= Discussions =		= Discussions =
		+	* [http://datsun1200.com/modules/newbb/viewtopic.php?post_id=421357#forumpost421357 Rotary conversion advice]
	* [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=41624&forum=9 Project: SUNNY COUPE GX (13B COSMO TURBO)]		* [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=41624&forum=9 Project: SUNNY COUPE GX (13B COSMO TURBO)]
	* [http://datsun1200.com/modules/myalbum/photo.php?lid=93 Rota 1200]		* [http://datsun1200.com/modules/myalbum/photo.php?lid=93 Rota 1200]
	* [http://datsun1200.com/modules/newbb/viewtopic.php?post_id=262362 Rotary 1200 Coupe, 6 Speed]		* [http://datsun1200.com/modules/newbb/viewtopic.php?post_id=262362 Rotary 1200 Coupe, 6 Speed]
		+	* [http://datsun1200.com/modules/newbb/viewtopic.php?post_id=88772#forumpost88772 Datsun 1000 Rotary]
-	= Engine =	+	{{Album|15129}}
-	The Mazda rotary comes in two common sizes: 12A and 13B. In Australia, choose a 10A for street legal swaps. Everyone else, choose the 13B. There are less common versions, the old 10A and the ultra-rare and expensive 20B triple rotor.	+
-	{{Thumb|8040}} 12A	+	= Builds =
		+	Datrotor's [[DATYLD]]
		+	<br>{{Photo!|2F5B0AC9-38E2-4975-97DB-795BECF2A234.jpg|wiki}}
-	{{Thumb|158}} Mazda 13B carbureted	+	Stu's [[rxute]]
		+	<br>{{Album!|19370}}
-	{{Thumb|15021}} 13B Fuel Injected	+	= Swap Notes =
		+	== Oil Pan ==
		+	Use the Moroso oil pan for Datsun 1200.
-	{{Thumb|93}} Mazda 13B Turbo rotary engine	+	{{Album|24941}}
-	{{Thumb|2050}} Factory EFI 13B Turbo	+	== Engine Mounts ==
		+	Cut out about 10mm out of the standard 1200 crossmember and brace it. This allows the engine to sit low enough.
-	{{Thumb|3008}} 13B Turbo with factory intercooler	+	{{PhotoPost|Cutcut_zps954618cf.jpg|427382|wiki}} {{UploadPostH|12811_4dd76b237e05d.jpg|368782|300}}
-	{{Thumb|14572}} 20B triple rotor	+	=== Front Mount ===
		+	Most swappers use the front-mount engine case.
-	= Engine Mounts =	+	Fit at front of engine bay (two styles shown)
-	== Front Mount ==	+	<br>{{UploadPost|12811_4dd76b7f6e64d.jpg|368782}} {{AlbumH|9420|jpg|300}}
-	Most use the front-mount case. If your rotary doesn't have it, you can retro-fit it using a 12A timing cover (which fits on 13B).	+
-	{{Thumb|1787}} {{Thumb|2616}} {{Thumb|2700}} {{Thumb|2701}} {{Thumb|2702}} {{Thumb|2703}} {{Thumb|15144}} {{Thumb|20618}}	+	Mount circled in green. Original engine mounts are removed (circled in red)
		+	<br>{{Album|5448}}
-	{{PhotoPostH|IMG_20130115_192943.jpg|427624|wiki}} {{PhotoPostH|IMG_20130115_192848.jpg|427624|wiki}}	+	[http://datsun1200.com/modules/newbb/viewtopic.php?post_id=427624#forumpost427624 Topic] - Weld or bolt new custom-made brackets to the front of the chassis rails (bolt to bumper support bolts)
		+	<br>{{PhotoH|IMG_20130115_192848.jpg|wiki}} {{PhotoH|IMG_20130115_192943.jpg|wiki}}
-	== Side Mount ==	+	If your rotary doesn't have a front-mount case, you can retro-fit it using a 12A timing cover (which fits on 13B).
-	Cut out about 10mm out of the standard 1200 crossmember and brace it. Weld new custom-made brackets.	+
-	{{Thumb|5448}}	+	{{Album|15144}} {{Album|1787}}
-	{{PhotoPost|Cutcut_zps954618cf.jpg|427382|wiki}}	+	{{Album|2616}} {{Album|2700}} {{Album|2701}} {{Album|2702}} {{Album|2703}} {{Album|20618}}
-	[http://maddat.com.au/1200.php Mad Dat] 13BT Fitting Kit allows the newer-type rotary engine side mount, their crossmeber curves down so the top of the cross member is lower.	+	=== Engine Setback ===
		+	If you want to get the rotary farther back, the tunnel is cut larger. Consequently the pedals will need to be moved.
		+
		+	{{Album|8555}} {{Album|9421}} {{Album|9422}} {{Album|8556}}
		+
		+	=== Side Mount ===
		+	[[Mad Dat]] 13BT Fitting Kit allows the newer-type rotary engine side mount, their crossmember curves down so the top of the cross member is lower.
	Datrotor fabricated these for a 13B:		Datrotor fabricated these for a 13B:
	<br>{{PhotoPost|d06cfa0b.jpg|410124|wiki}}		<br>{{PhotoPost|d06cfa0b.jpg|410124|wiki}}
-	== Motor Plate ==	+	=== Mad Dat ===
-	For racing a motor plate can be used. Not recommended for a street car as it transmit vibration directly to the body.	+	13BT into 1200 Engine Fitting Kit
		+	Product No - FK13B1200 ($1200 in 2012)
-	{{Thumb|2915}}	+	{{Photo2|FK13B1200.jpg}}
-	= Oil Pan =	+	Includes custom engine crossmember, custom 13B engine brackets, rubber mounts, gearbox cross member (2 part) and gearbox rubber mount. Adjustable 22mm sway bar includes mounting bushes & saddles and link ends. Suits RX-7 S4 (1985 - 1988) and RX-7 S5 (1989 - 1991) as is. Engine cross member comes with engineers report.
-	Use the Moroso oil pan for Datsun 1200.	+
-	{{Album|24941}}	+	=== Motor Plate ===
		+	For racing a hard-mounted motor plate can be used. Not recommended for a street car as it transmit vibration directly to the body.
-	= Transmission =	+	{{Album|2915}}
		+
		+	== Transmission ==
	Use the transmission that comes with the rotary engine (the Mazda transmission).		Use the transmission that comes with the rotary engine (the Mazda transmission).
-	{{Thumb|19869}}	+	{{AlbumH|19869|jpg|262}} {{Album|8040}}
		+
		+	Fabricate gearbox mounts.
		+	{{See|Wide gearbox crossmember}}
		+
		+	Two styles
		+	<br>{{Album|9423}} {{Album|11776}}
	== Driveshaft ==		== Driveshaft ==
Line 86:		Line 162:
	A new shifter mount hole may need to cut? Look into doing the shifter extension mod otherwise your shifter will be a little bit to far back for comfort (it will sit in between the front seats right in front of the handbrake).		A new shifter mount hole may need to cut? Look into doing the shifter extension mod otherwise your shifter will be a little bit to far back for comfort (it will sit in between the front seats right in front of the handbrake).
-	{{Thumb|15141}}	+	{{Album|15141}}
-		+
-	== Transmission Mount ==	+
-	Mount the gearbox the with a similar bracket to ca18 one.	+
-	<br>{{Thumb|9423}}	+
-		+
-	or make a new gearbox crossmember:	+
-	<br>{{PhotoPost|IMG_20130115_192832.jpg|427624|wiki}}	+
	== Tunnel ==		== Tunnel ==
Line 100:		Line 169:
	In any cause, you'll have to make the tunnel higher through the middle and make space for the clutch fork, or cut a hole for the clutch fork.		In any cause, you'll have to make the tunnel higher through the middle and make space for the clutch fork, or cut a hole for the clutch fork.
-	{{Thumb|11107}} {{Thumb|1788}}	+	{{Album|11107}} {{Album|1788}}
	Alternatively you can fit an aftermarket hydraulic throwout bearing to replace the clutch fork.		Alternatively you can fit an aftermarket hydraulic throwout bearing to replace the clutch fork.
-	= Differential =	+	== Differential ==
-	The least 12A engine outputs 100 lb. ft. of torque. The stock Datsun 1200 H145 diff can handle that.	+	[[Rear_Axle_Swaps#Strength_of_Differential_--_Torque_Rating|Diff Strength]]: differential suitable for torque of engine
-	But many 12A put out 115 lb. ft. of torque, which calls for a stronger diff. The H150 from a B210 or B310 can handle this.	+	* The least 12A engine outputs 100 lb. ft. of torque. The stock Datsun 1200 [[H145]] diff can handle that.
-	Stock 13B engine calls for an H165.	+	* Many 12A put out 115 lb. ft. of torque, which calls for a stronger diff. The [[H150]] from a B210 or B310 can handle this. See [[Rear_Axle_Swaps#B210_Japan_.28Hitachi.29_axle]]
-	Any modified rotary (especially if the turbo boost is raised) will need a stronger differential, such as a Nissan H190. Drag racing versions need the ultra-strong Ford 9".	+	* Stock 13B engine calls for an [[H165]]. See [[Rear_Axle_Swaps#1200_Ute]]
-	See: [[Rear_Axle_Swaps#Strength_of_Differential_--_Torque_Rating|Rear Axle Swaps]]	+	* Any modified rotary (especially if the turbo boost is raised) will need a stronger differential, such as a [[Rear_Axle_Swaps#H190_320_Truck|Nissan H190 swap]]. Serious drag racing versions may need the ultra-strong [[Rear_Axle_Swaps#Ford_9.22|Ford 9"]].
-	= Exhaust =	+	{{Main|Rear_Axle_Swaps#Strength_of_Differential_--_Torque_Rating}}
		+
		+	== Exhaust ==
	For the 13BT, run headers to the rear firewall across to the passenger side.		For the 13BT, run headers to the rear firewall across to the passenger side.
		+
		+	== Wiring ==
		+	Fit these using the stock 1200 wiring harness. Wires may need to extended.
		+	* Starter +
		+	* Starter S
		+	* Alternator +
		+	* Alternator Earth
		+	* Engine earth
		+	* Body earth
		+	* Coil
		+
		+	For carbureted engine
		+	* electric choke (connect to coil 12V)
		+
		+	For EFI engine
		+	* ECU relay
		+	* Fuel pump relay
	= Rotary-Powered Datsun 1200 photo index =		= Rotary-Powered Datsun 1200 photo index =
Line 122:		Line 210:
	{{Thumbc|93|rota 1200}}{{Thumbc|158|project 1200}}{{Thumbc|383|1200 rotary prototype.}}{{Thumbc|581|rotor ute}}{{Thumbc|657|ext=JPG|my 2nd datsun}}{{Thumbc|912|my !st 1200}}{{Thumbc|959|supercharged 13b 1000}}{{Thumbc|1078|oh yes ....}}{{Thumbc|1384|DATSUN 1200 FROM GUATEMALA CITY CENTRAL AMERICA}}{{Thumbc|1539|black drag 1}}{{Thumbc|1540|black drag 2}}{{Thumbc|1545|13b 2dr blue drag 1a}}{{Thumbc|1546|13b 2dr blue drag 1b}}{{Thumbc|1547|13b 2dr blue drag 1c}}{{Thumbc|1548|13b 2dr blue drag 1d}}{{Thumbc|1549|13b 2dr blue drag 1e}}{{Thumbc|1756|1972 1200 datsun w/Rotary}}{{Thumbc|1757|1972 1200 datsun w/Rotary}}{{Thumbc|1787|13b1000ute bay}}{{Thumbc|1788|100013b interior tunnel}}{{Thumbc|1789|project 2 13bturbo 1000}}{{Thumbc|1820|rotary coupe w/15" SAAB rims}}{{Thumbc|2049|rotary 1200 ute}}{{Thumbc|2050|rotary 1200 ute}}{{Thumbc|2418|my 1000 ute}}{{Thumbc|2558|1000 dragsedan}}{{Thumbc|2616|13b mounts}}{{Thumbc|2681|pic for d}}{{Thumbc|2848|some of the puertorican best}}{{Thumbc|2914|supercharged 13b 1000}}{{Thumbc|2915|supercharged 13b 1000 }}{{Thumbc|3008|series 5 13b turbo rotary}}{{Thumbc|3078|very nice indeed!}}{{Thumbc|3427|8 second 1200 13b turbo}}{{Thumbc|3483|coupe}}{{Thumbc|3548|avenge}}{{Thumbc|3549|nother 13b 1200}}{{Thumbc|4484|1200 drag race coupe}}{{Thumbc|4486|drag coupe}}{{Thumbc|4655|rotary powered 1200}}{{Thumbc|4694|supernats}}{{Thumbc|4949|early prototype rotary}}{{Thumbc|5006|1200 ute (perfection)}}{{Thumbc|5448|rotary mounts in 323 spud}}{{Thumbc|5979|powercruise coupe}}{{Thumbc|6757|yellow rotary coupe}}{{Thumbc|7226|what noisy exhaust}}		{{Thumbc|93|rota 1200}}{{Thumbc|158|project 1200}}{{Thumbc|383|1200 rotary prototype.}}{{Thumbc|581|rotor ute}}{{Thumbc|657|ext=JPG|my 2nd datsun}}{{Thumbc|912|my !st 1200}}{{Thumbc|959|supercharged 13b 1000}}{{Thumbc|1078|oh yes ....}}{{Thumbc|1384|DATSUN 1200 FROM GUATEMALA CITY CENTRAL AMERICA}}{{Thumbc|1539|black drag 1}}{{Thumbc|1540|black drag 2}}{{Thumbc|1545|13b 2dr blue drag 1a}}{{Thumbc|1546|13b 2dr blue drag 1b}}{{Thumbc|1547|13b 2dr blue drag 1c}}{{Thumbc|1548|13b 2dr blue drag 1d}}{{Thumbc|1549|13b 2dr blue drag 1e}}{{Thumbc|1756|1972 1200 datsun w/Rotary}}{{Thumbc|1757|1972 1200 datsun w/Rotary}}{{Thumbc|1787|13b1000ute bay}}{{Thumbc|1788|100013b interior tunnel}}{{Thumbc|1789|project 2 13bturbo 1000}}{{Thumbc|1820|rotary coupe w/15" SAAB rims}}{{Thumbc|2049|rotary 1200 ute}}{{Thumbc|2050|rotary 1200 ute}}{{Thumbc|2418|my 1000 ute}}{{Thumbc|2558|1000 dragsedan}}{{Thumbc|2616|13b mounts}}{{Thumbc|2681|pic for d}}{{Thumbc|2848|some of the puertorican best}}{{Thumbc|2914|supercharged 13b 1000}}{{Thumbc|2915|supercharged 13b 1000 }}{{Thumbc|3008|series 5 13b turbo rotary}}{{Thumbc|3078|very nice indeed!}}{{Thumbc|3427|8 second 1200 13b turbo}}{{Thumbc|3483|coupe}}{{Thumbc|3548|avenge}}{{Thumbc|3549|nother 13b 1200}}{{Thumbc|4484|1200 drag race coupe}}{{Thumbc|4486|drag coupe}}{{Thumbc|4655|rotary powered 1200}}{{Thumbc|4694|supernats}}{{Thumbc|4949|early prototype rotary}}{{Thumbc|5006|1200 ute (perfection)}}{{Thumbc|5448|rotary mounts in 323 spud}}{{Thumbc|5979|powercruise coupe}}{{Thumbc|6757|yellow rotary coupe}}{{Thumbc|7226|what noisy exhaust}}
		+
		+	{{UploadPost|14815_4e4340674eac2.jpg|379289}}
	= Photo Index =		= Photo Index =

---

Current revision

The Mazda rotary engine is a good match for Datsun 1200 -- it is light and compact. It makes more power than a piston engine of the same size and weight. The engine weight is down low so it doesn't interfere with good handling.
Album 15230

Contents 1 Performance 2 Overview 3 Engine 4 Discussions 5 Builds 6 Swap Notes 6.1 Oil Pan 6.2 Engine Mounts 6.2.1 Front Mount 6.2.2 Engine Setback 6.2.3 Side Mount 6.2.4 Mad Dat 6.2.5 Motor Plate 6.3 Transmission 6.4 Driveshaft 6.5 Shifter 6.6 Tunnel 6.7 Differential 6.8 Exhaust 6.9 Wiring 7 Rotary-Powered Datsun 1200 photo index 8 Photo Index

Performance

Also See: Mazda Wankel engineᵂ

Typical engine power in stock form:

• 12A: 100-130 HP, 100-115 lb. ft. torque
• 13B EFI: 135 hp, 133 lb. ft. torque
• 13B-Turbo (1987-1991 "Turbo II"): 185-200 HP
• 13B-REW (twin turbo) 255-280 hp
• 13B-MSP (RX-8) 237 hp USA, 191-250 hp world

Album 13279 Album 18584

Quarter Mile acceleration performance ranges from quick to insanely quick. With a totally stock rotary engine you won't be wanting for power.

• 19.8 secs at 65 mph: Stock Datsun 1200 piston engine (baseline)
• 16.1 at 90mph: bone stock 12A rotary engine tuned by ear
• Ange's 13.7 second 12A bridgeport
• JVML's 8.1 second 13B twin turbo

Rotor Power
Album 6353 Album 22484

Overview

Search Club!: <rotary> <10A> <12A> <13B>
Image search: Rotary Datsun 1200ᴵ
Video search: Rotary Datsun 1200V ᴳ

• #Differential suitable for torque of engine
• Radiator Upgrade suitable for the HP of the engine
• Mazda engine & transmission
  • Modify crossmember & fabricate new mounts
  • Custom gearbox mount
  • Oil pan to suit 1200
  • Bigger tunnel to fit the Mazda transmission
  • Custom exhaust
  • Custom turbo manifolds (for 13BT)
  • Shifter relocation forward
• Tailshaft, custom

Post click for topic Post 422392 Post 422392

13BT in Sunny B310
Album 18819 Album 18818

Engine

The Mazda rotary comes in two common sizes: 12A and 13B. In Australia, choose a 10A for street legal swaps. Everyone else, choose the 13B. There are less common versions, the old 10A and the ultra-rare and expensive 20B triple rotor.

Custom Single Rotor rotary engine (pictured in Datsun 1000)
Post 422658

12A (1146 cc, equivalent to 2.4 liter piston engine)
Post click for topic Album 19408

Mazda 13B (1308 cc, equivalent to 2.6 liter piston engine) carbureted
Album 158 Album 8555

13B Fuel Injected
Album 15021

Mazda 13B Turbo rotary engine
Album 93

Mazda 13B Turbo Factory EFI
Album 2050

13B Turbo with factory intercooler
Album 3008

20B triple rotor
Album 14572 Post 482854 Post click for topic Post click for topic

13B carbureted
Album 15587

Discussions

• Rotary conversion advice
• Project: SUNNY COUPE GX (13B COSMO TURBO)
• Rota 1200
• Rotary 1200 Coupe, 6 Speed
• Datsun 1000 Rotary

Album 15129

Builds

Datrotor's DATYLD

Stu's rxute

Swap Notes

Oil Pan

Use the Moroso oil pan for Datsun 1200.

Album 24941

Engine Mounts

Cut out about 10mm out of the standard 1200 crossmember and brace it. This allows the engine to sit low enough.

Post click for topic Post click for topic

Front Mount

Most swappers use the front-mount engine case.

Fit at front of engine bay (two styles shown)
Post 368782 Album 9420

Mount circled in green. Original engine mounts are removed (circled in red)
Album 5448

Topic - Weld or bolt new custom-made brackets to the front of the chassis rails (bolt to bumper support bolts)

If your rotary doesn't have a front-mount case, you can retro-fit it using a 12A timing cover (which fits on 13B).

Album 15144 Album 1787

Album 2616 Album 2700 Album 2701 Album 2702 Album 2703 Album 20618

Engine Setback

If you want to get the rotary farther back, the tunnel is cut larger. Consequently the pedals will need to be moved.

Album 8555 Album 9421 Album 9422 Album 8556

Side Mount

Mad Dat 13BT Fitting Kit allows the newer-type rotary engine side mount, their crossmember curves down so the top of the cross member is lower.

Datrotor fabricated these for a 13B:
Post click for topic

Mad Dat

13BT into 1200 Engine Fitting Kit
Product No - FK13B1200 ($1200 in 2012)

Includes custom engine crossmember, custom 13B engine brackets, rubber mounts, gearbox cross member (2 part) and gearbox rubber mount. Adjustable 22mm sway bar includes mounting bushes & saddles and link ends. Suits RX-7 S4 (1985 - 1988) and RX-7 S5 (1989 - 1991) as is. Engine cross member comes with engineers report.

Motor Plate

For racing a hard-mounted motor plate can be used. Not recommended for a street car as it transmit vibration directly to the body.

Album 2915

Transmission

Use the transmission that comes with the rotary engine (the Mazda transmission).

Album 19869 Album 8040

Fabricate gearbox mounts.

Two styles
Album 9423 Album 11776

Driveshaft

A custom driveshaft to mate the Mazda transmission with your differential will have to be fabricated. Any driveshaft shop can make this for you.

Shifter

A new shifter mount hole may need to cut? Look into doing the shifter extension mod otherwise your shifter will be a little bit to far back for comfort (it will sit in between the front seats right in front of the handbrake).

Album 15141

Tunnel

Some fabricate a large tunnel. Is it necessary, or just used with beefy racing transmissions?

In any cause, you'll have to make the tunnel higher through the middle and make space for the clutch fork, or cut a hole for the clutch fork.

Album 11107 Album 1788

Alternatively you can fit an aftermarket hydraulic throwout bearing to replace the clutch fork.

Differential

Diff Strength: differential suitable for torque of engine

• The least 12A engine outputs 100 lb. ft. of torque. The stock Datsun 1200 H145 diff can handle that.

• Many 12A put out 115 lb. ft. of torque, which calls for a stronger diff. The H150 from a B210 or B310 can handle this. See Rear_Axle_Swaps#B210_Japan_.28Hitachi.29_axle

• Stock 13B engine calls for an H165. See Rear_Axle_Swaps#1200_Ute

• Any modified rotary (especially if the turbo boost is raised) will need a stronger differential, such as a Nissan H190 swap. Serious drag racing versions may need the ultra-strong Ford 9".

Exhaust

For the 13BT, run headers to the rear firewall across to the passenger side.

Wiring

Fit these using the stock 1200 wiring harness. Wires may need to extended.

* Starter +
* Starter S
* Alternator +
* Alternator Earth
* Engine earth
* Body earth
* Coil

For carbureted engine
* electric choke (connect to coil 12V)

For EFI engine
* ECU relay
* Fuel pump relay 

Rotary-Powered Datsun 1200 photo index

Here are some pictures from our club photo album. Click a pic for larger photos, details, and discussion:

Post 379289

Photo Index

Click any thumbnail to see it full size in our Club Photo Album. Read details or post a comment!

 

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