Exhaust Piping

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Category: Exhaust System

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Revision as of 00:30, 16 November 2012 ddgonzal (Talk | contribs) (->Sizing for Performance) <- Previous diff		Revision as of 01:53, 5 January 2013 ddgonzal (Talk | contribs) Next diff ->
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-	[[Category:Exhaust System]]
-
	The Datsun 1200 used a 1-1/2 inch exhaust system. The cast iron exhaust manifold has a flat two-bolt flange. A donut-type asbestos seal was used to connects to the exhaust pipe, which extended past the rear axle. Finally a very, very quiet muffler with a short tail pipe was suspended by two rubber rings.		The Datsun 1200 used a 1-1/2 inch exhaust system. The cast iron exhaust manifold has a flat two-bolt flange. A donut-type asbestos seal was used to connects to the exhaust pipe, which extended past the rear axle. Finally a very, very quiet muffler with a short tail pipe was suspended by two rubber rings.
Line 6:		Line 4:
	[http://datsun1200.com/modules/myalbum/photo.php?lid=11320 http://datsun1200.com/modules/myalbum/photos/thumbs/11320.jpg] muffler with integrated pipe		[http://datsun1200.com/modules/myalbum/photo.php?lid=11320 http://datsun1200.com/modules/myalbum/photos/thumbs/11320.jpg] muffler with integrated pipe
	<br>Bottom (old) is the factory piece		<br>Bottom (old) is the factory piece
-
	[[A12GX Engine]] (twin carb) models used a quieter exhaust with a small resonator as well the regular muffler:		[[A12GX Engine]] (twin carb) models used a quieter exhaust with a small resonator as well the regular muffler:
	<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=12778 http://datsun1200.com/modules/myalbum/photos/thumbs/12778.jpg]		<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=12778 http://datsun1200.com/modules/myalbum/photos/thumbs/12778.jpg]
-	<br>Notice it also used a cast header with dual outlets.	+
		+	Notice the GX also used a cast header with dual outlets.
	<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=2585 http://datsun1200.com/modules/myalbum/photos/thumbs/2585.jpg]		<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=2585 http://datsun1200.com/modules/myalbum/photos/thumbs/2585.jpg]
-
-
	= Sizing for Performance =		= Sizing for Performance =
	A large diameter exhaust pipe is needed for maximum high-rpm horsepower. However, a small diameter pipe is needed for low-rpm horsepower. So you can see that a properly sized pipe -- not too big or too small -- is advantageous.		A large diameter exhaust pipe is needed for maximum high-rpm horsepower. However, a small diameter pipe is needed for low-rpm horsepower. So you can see that a properly sized pipe -- not too big or too small -- is advantageous.
-
	Single Exhaust		Single Exhaust
Line 35:		Line 30:
	* For drag racing where it is flat-out full throttle, a larger size may work fine		* For drag racing where it is flat-out full throttle, a larger size may work fine
-		+	2.5 inch works too but gives less HP
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=13999 http://datsun1200.com/modules/myalbum/photos/thumbs/13999.jpg]	+	<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=13999 http://datsun1200.com/modules/myalbum/photos/thumbs/13999.jpg]
-	<br>2.5 inch	+
	= Options =		= Options =
Line 43:		Line 37:
	* Chrome tailpipe extension (bell-shaped)		* Chrome tailpipe extension (bell-shaped)
	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=13931 http://datsun1200.com/modules/myalbum/photos/thumbs/13931.jpg]		*: [http://datsun1200.com/modules/myalbum/photo.php?lid=13931 http://datsun1200.com/modules/myalbum/photos/thumbs/13931.jpg]
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	= Coupe vs. Sedan =		= Coupe vs. Sedan =
Line 59:		Line 52:
	* 1.5" rear outlet, on far left of oval		* 1.5" rear outlet, on far left of oval
	A muffler about 2" longer may fit.		A muffler about 2" longer may fit.
-
	Nissan JDM Catalog		Nissan JDM Catalog
Line 90:		Line 82:
	* 20321-H2500 FINISHER-exhaust - GL, GX		* 20321-H2500 FINISHER-exhaust - GL, GX
	* 20720-N2225 SEALER KIT-exhaust tube joint - ALL		* 20720-N2225 SEALER KIT-exhaust tube joint - ALL
-
	USA Catalog		USA Catalog
Line 97:		Line 88:
	* 20321-H2000 FINISHER-EXHAUST (chrome extension) NLA		* 20321-H2000 FINISHER-EXHAUST (chrome extension) NLA
	* 20321-H2500 FINISHER-EXHAUST (chrome extension) $18.36 NLA (but is in 2007 catalog)		* 20321-H2500 FINISHER-EXHAUST (chrome extension) $18.36 NLA (but is in 2007 catalog)
-
	== Aftermarket 1.5 ==		== Aftermarket 1.5 ==
-	* [http://www.napaonline.com Dynomax 17700] ("Thrush turbo"),similar shape to stock. Oval 3.25 in. x 7.75 in. Case Length: 11 in. Overall length: 16 in. Width: 7.750 in. Thickness: 3.25 in.	+	* Dynomax 17700 ("Thrush turbo"),similar shape to stock. Oval 3.25 in. x 7.75 in. Case Length: 11 in. Overall length: 16 in. Width: 7.750 in. Thickness: 3.25 in.
	1-1/2 pipe clamps:		1-1/2 pipe clamps:
Line 117:		Line 107:
	* Merit 9821		* Merit 9821
-
	== Aftermarket 1.75 ==		== Aftermarket 1.75 ==
-	* [http://store.summitracing.com/partdetail.asp?autofilter=1&part=WLK%2D17771&N=700+4294922710+4294891681+4294788452+115&autoview=sku Walker Super Turbo WLK-17771]	+	* Walker Super Turbo WLK-17771
		+	* Dynomax 17771
	* WALKER Pro-Fit Muffler, 1.75" offset/center, #17881		* WALKER Pro-Fit Muffler, 1.75" offset/center, #17881
-	* [http://www.napaonline.com Dynomax 17771]	+	* Magnaflow 11123 with offset. Might be too long, it is 14" body, but it is Stainless Steel, best buy
-	* [http://www.performancepeddler.com/detail.asp?PRODUCT_ID=MAG11123 Magnaflow 11123 with offset] Might be too long, it is 14" body, but it is Stainless Steel, best buy	+	* Borla XR-1: BOR-40483 Stainless Steel, 1.75 in, 2.25 out
-	* [http://store.summitracing.com/partdetail.asp?autofilter=1&part=BOR%2D40483&N=700+4294922710+4294891681+4294788452+115&autoview=sku Borla XR-1] BOR-40483 Stainless Steel, 1.75 in, 2.25 out	+
-	== USA ==	+	Search for these using http://google.com or http://www.napaonline.com
-	B110 RAW PARTS LIST	+
-	20010-H3100 ASSY-TUBE EXHAUST FRONT	+	[[Category:Exhaust System]]
-	20010-H1020 ASSY-TUBE,EXHAUST,FRONT	+
-	20010-H3200 ASSY-TUBE EXHAUST FRONT	+
-	20010-H1000 ASSY-TUBE EXHAUST FRONT	+
-	20602-27700 NUT-FIXING TUBE END	+
-	14011-29901 NUT-FIXING TUBE END	+
-	20635-18000 STOPPER-MUFFLER BOUND	+
-	20100-H1000 ASSY-MUFFLER WITH REAR TUBE	+
-	20100-H7001 ASSY-MUFFLER WITH REAR TUBE	+
-	20100-H1800 ASSY-MUFFLER WITH REAR TUBE	+
-	20100-H2500 ASSY-MUFFLER WITH REAR TUBE	+
-	20100-H7101 ASSY-MUFFLER WITH REAR TUBE	+
-	20630-V0100 RING-RUBBER MUFFLER CLAMP	+
-	20630-P4400 RING-RUBBER MUFFLER CLAMP	+
-	20630-18000 RING-RUBBER MUFFLER CLAMP	+
-	20643-B5000 CLIP-TUBE EXHAUST	+
-	20620-H1000 CLIP-TUBE EXHAUST	+
-	08915-43810 WASHER-PLAIN M8	+
-	08915-13810 WASHER-SPRING M8	+
-	08110-86010 BOLT-HEX M8	+
-	08911-10810 NUT-HEX M8	+
-	20640-18000 STRAP-EXHAUST HANGER	+
-	42013-0101P STRAP-EXHAUST HANGER	+
-	20641-18000 WASHER-PLAIN EXHAUST	+
-	08911-10810 NUT-HEX M8	+
-	08915-13810 WASHER-SPRING M8	+
-	08110-82210 BOLT-HEX M8	+
-	20321-H2000 FINISHER-EXHAUST	+
-	20321-H2500 FINISHER-EXHAUST	+
-	20720-N2226 KIT-SEALANT,EXH TUBE JOINT	+
-	20720-N2225 KIT-SEALANT,EXH TUBE JOINT	+

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Revision as of 01:53, 5 January 2013

The Datsun 1200 used a 1-1/2 inch exhaust system. The cast iron exhaust manifold has a flat two-bolt flange. A donut-type asbestos seal was used to connects to the exhaust pipe, which extended past the rear axle. Finally a very, very quiet muffler with a short tail pipe was suspended by two rubber rings.

Contents 1 Overview 2 Sizing for Performance 3 Options 4 Coupe vs. Sedan 5 Part Numbers 5.1 Aftermarket 1.5 5.2 Aftermarket 1.75

Overview

muffler with integrated pipe
Bottom (old) is the factory piece

A12GX Engine (twin carb) models used a quieter exhaust with a small resonator as well the regular muffler:

Notice the GX also used a cast header with dual outlets.

Sizing for Performance

A large diameter exhaust pipe is needed for maximum high-rpm horsepower. However, a small diameter pipe is needed for low-rpm horsepower. So you can see that a properly sized pipe -- not too big or too small -- is advantageous.

Single Exhaust

• Stock 62 horsepower A10: 35mm (~1-3/8")
• Stock 68/69 horsepower A12: 1-1/2" (38mm)
• lightly modded A-series engine: 1-3/4"
• Max fuel econdomy: 1.5"
• 90 hp engine: 1.75"
• 100 hp engine: 2"
• 150 hp engine: 2-1/4"
• 200 hp engine: 2-1/2"

Of course you can vary this. For example:

• The larger the engine relative to your car, you can get away with a larger pipe. Although the larger pipe cuts down on low-rpm horsepower you have a big engine so it's not so bad. This increases high-rpm (peak) horsepower
• For better street driveability, go a size smaller
• For drag racing where it is flat-out full throttle, a larger size may work fine

2.5 inch works too but gives less HP

Options

• Muffler system with resonator
• Chrome tailpipe extension (bell-shaped)

  

Coupe vs. Sedan

coupe muffler

• The bends are slightly different.
• The hanger near the end of the tailpipe (in the photo: where the price tag is) is a different place for sedan vs coupe

Part Numbers

Muffler measurements from my car (original muffler?):

• 11-5/8" Shell length
• 8-1/4" Shell oval width
• 3-3/4" Shell oval height
• 1.5" front inlet, centered
• 1.5" rear outlet, on far left of oval

A muffler about 2" longer may fit.

Nissan JDM Catalog

• 20010-H1000 TUBE ASS'Y-exhaust, front - ALL (exc. GX, Automatic)

  

• 20010-H1020 TUBE ASS'Y-exhaust, front - Automatic
• 20010-H2301 TUBE ASS'Y-exhaust, front - GX 4-speed
• 20010-H3400 TUBE ASS'Y-exhaust, front - GXA (GX Automatic)
• 20010-H7200 TUBE ASS'Y-exhaust, front - GX-5
• 20603-H2300 GASKET-exhaust tube - GX and GX-5
• 20602-27700 NUT-fixing, tube end (2) - ALL (except GX, GX-5)
• 20602-27700 NUT-fixing, tube end - GX-5
• 08915-13810 WASTHER-spring lock (3) - GX-5
• 20635-18000 STOPPER-muffler bound - ALL
• 20100-H1000 MUFFLER ASS'Y-with rear tube - Sedan
• 20100-H1400 MUFFLER ASS'Y-with rear tube - Van
• 20100-H2500 MUFFLER ASS'Y-with rear tube - Coupe
• 20630-18000 RING-rubber, muffler clamp (2)
• 20620-H1000 CLIP-tube, exhaust
• 06915-43810 WASHER-plain (2)
• 08915-13810 WASHER-lock
• 08110-85510 or 08110-86010 BOLT
• 08911-10810 NUT
• 20640-18000 STRAP-exhaust hanger
• 20641-18000 WASHER-plain (2)
• 08911-10810 NUT (2)
• 08915-13810 WASHER-lock (2)
• 08110-82210 BOLT (2)
• 20321-H2500 FINISHER-exhaust - GL, GX
• 20720-N2225 SEALER KIT-exhaust tube joint - ALL

USA Catalog

• 20010-H3100 ASSY-TUBE EXHAUST FRONT Sedan Manual Trans (formerly 20010-H1000) $34.92
• 20100-H7001 ASSY-MUFFLER WITH REAR TUBE Sedan Manual Trans (formerly 20100-H1000) $84.72 NLA (but is in 2007 catalog)
• 20321-H2000 FINISHER-EXHAUST (chrome extension) NLA
• 20321-H2500 FINISHER-EXHAUST (chrome extension) $18.36 NLA (but is in 2007 catalog)

Aftermarket 1.5

• Dynomax 17700 ("Thrush turbo"),similar shape to stock. Oval 3.25 in. x 7.75 in. Case Length: 11 in. Overall length: 16 in. Width: 7.750 in. Thickness: 3.25 in.

1-1/2 pipe clamps:

• Merit M112 or U112
• Napa BK 7335325

Rubber Donut Hangers

• Merit 8166 ???

Aftermarket GX (is it the same as the S110 gasket?)

• Gasket: Merit 8696
• Pipe: (1981 Nissan 720), Merit 48316

Exhaust Tip - 1-1/2" diameter

• Merit 9821

Aftermarket 1.75

• Walker Super Turbo WLK-17771
• Dynomax 17771
• WALKER Pro-Fit Muffler, 1.75" offset/center, #17881
• Magnaflow 11123 with offset. Might be too long, it is 14" body, but it is Stainless Steel, best buy
• Borla XR-1: BOR-40483 Stainless Steel, 1.75 in, 2.25 out

Search for these using http://google.com or http://www.napaonline.com

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