Torque specs for exhaust manifold nuts - 1990 Nissan Sentra

Hi Jesse,here's a Autozone repair guide on your exhaust manifold. Repair Guides Engine Mechanical Components Exhaust Manifold AutoZone com

Hi Dave,here's a link to a repair guide on your exhaust manifold. GET 25 GIFT CARD FOR EVERY 100 SPENT ON ONLINE SHIP TO HOME ORDERS

Exhaust Manifold To Cylinder Head - 9.58 ft lbs
Exhaust Pipe To Exhaust Manifold - 20 ft lbs
you can check it out here, also all other torque specs for your engine.
Torque Specs Database

which engine.? 8v or 16v.

the manifold unbolts, see the studs there. they are nuts acutally

the trail pipe flange , has.

on the 8v, engine has 3 nuts and washers.

the 16v engine runs a donut ring, and 2 long spring loaded bolts.

that love to seize.

it just unbolts but rust is devil we all deal with.

the 16v has 2 bolt flange on top that holds up the AIR PIPE>. huge.

here is the torque page.

http://www.fixkick.com/specs/torque1.html



the 16v torques work too, on this full fsm under engine.

http://www.acksfaq.com/trackerfsm.htm

read the section on exh, man. they put the torque\'s, in line.



here is a slide show of the 16v.

http://www.fixkick.com/engine/97-motor-pull/HTML/image_58.html



here is both,

http://www.fixkick.com/exhaust/92-95all.pdf

Please help me. What torque spec. on which of the bolts or nuts. I really don't know until you tell me.. example: Head bolt, exhaust manifold bolts, injector pump. There a way to make sure that you have the correct bolt/nut torque specification. Bolt needs to cleaned with all foreign material removed, also the bolt holes needs to be cleaned out the same as the bolts. Use a thread straightener on the bolt/nut and bolt holes. Once the bolts and nuts and bolts holes are cleaned. Oil the bolt/nut and bolt hole before torquing to specification....GB..stewbison

Install the cylinder head bolts. Starting at top center, tighten all cylinder head bolts in sequence as shown in illustration, using the Cylinder Head Bolt Wrench (09221 - 32001) or equivalent. Repeat the procedure, re-tightening all cylinder head bolt to the specified torque. (torque spec is Cold Engine 105-115 Nm (76-83 ft lb) )
. Install the timing belt tensioner pulley.
. Install the timing belt on the camshaft sprocket, making sure that the tension side is tightened by turning the camshaft sprocket in reverse, all timing marks are in alignment.
. Adjust the timing according to "Timing Belt"
. Install the rocker cover and tighten the bolts to the specified torque. Tightening torque: Rocker cover belt:

2.5-3.5 Nm (25-35 kg.cm, 2-3 ft. lbs.)

. Install the timing belt cover.
Install the new intake manifold gasket and the intake manifold. Tighten the nuts and bolts to the specified torque.
Install the new exhaust manifold gasket and the exhaust manifold. Tighten the exhaust manifold attaching nuts to the specified torque.
. Install the surge tank and tighten the nuts bolts to the specified torque.
. Install the power steering oil pump and bracket.
. Install the ignition coil.
. Install the air intake hose.
Connect the vacuum hose, fuel hose and water hose.
. Install breather hose.

Water pump is driven by timing chain idler and is mounted on the rear of the timing chain housing. Disconnect the neg. battery cable. Drain cooling system. Disconnect oxygen sensor connector.
Remove upper exhaust manifould heat sheild. Remove exhaust manifold brace. Remove lower exhaust manifold heat sheild. Loosen manifold to exhaust manifold spring loaded nuts. Remove radiator outlet pipe to water pump coverbolts. Disconnect exhaust pipe from manifold.
Pull down on the exhaust pipe to disconnect it from exhaust manifold bolts. Disconnect outlet pipe from oil pan and transaxle. If equipped with manual tranaxle, remove exhaust maifold brace. Leave lower radiator hose attached and pull down on radiator out look pipe to disengauge from water pump. Leave outlet pipe hanging.
Lower vehicle. Remove exhaustmanifold to cylinder head nuts. Remove exhaust manifold to cylinder head nuts. Remove manifould. Remove timing chain front cover. Remove timing chain tensioner. Remove bolts bolts securing water pump cover to cylinder block. Remove water pump to timing chain housing nuts. Remove water pump attaching nuts. Remove water pump and cover assembly. Separate componets as necessary.
WHEN INSTALLING WATER PUMP MAKE SURE YOU FOLLOW THE TIGHTENING SEQUENCES THAT AFFECT SEALING. My frist one I messed up and broke the pump so becarful.
Installation
If cover was separated from body during removal, join this componets with a new gasket and hand tighten bolts. Apply bearing grease to splines of water pump drive. Set body and assemble into position.
Install and hand tighten bolts securing cover to cylinder block. Install and hand tighten bolts securing cover to cylinder block. Installand hand tighten nuts securing body to timing chain housing. Lubracate outlet pipe "O" ring with antifreeze. (I use RTV) Connect outlet pipe. Install and hand tighten bolts. Tighten bolts and nuts to specification in the following sequence. I'll ad the torque spec. at the end but this is where if you tighten out of order something will break.
pump assembly to timing chain housing nuts.
pump cover to pump body bolts
pump cover to cylinder block bolts (Bottom Bolt First)
outlet pipe to cover bolts
To complete installation reverse removel procedure.
Torque specs are 19 in. or 26mm all except water pump cover bolts which are 124 in or 14Nm
I never torque the bolts just make sure there done in the right order.

to torque nuts and bolts start in the center using a criss cross pattern working outward.. final torque is 12 ftlbs.

Exhaust Manifold bolt torque = 29 - 33 ft lbs

Lug nut torque = 65 - 87 ft lbs

Main Bearing torque = 40 - 43 ft lbs

Hope this helped you and best wishes.