Question about 1996 Nissan 200SX

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Nissan sr20ve engine .


Need specification for taking cylinder head apart and short block.

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  • Nissan Master
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Go to the public library.
You will need to photocopy lots of pages.

Posted on Jul 25, 2009

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Engine was knocking but running good not smoking so we replaced the engine with brand new short block from Toyota. Now the truck is blowing white smoke. What could the tech done wrong to cause this? Or...


Take it back. I doubt the short block is bad, but if the smoke persists beyond a day or two, the cylinder head may need removing to check the fit of the head gasket, and to ensure the passages in the head match the block. Does the exhaust have a sweet smell? That could be coolant burning.

Now it is possible that a little spilled coolant may have collected in the exhaust during the engine swap, and that is why you see white smoke. This should burn off in a day or two. If the smoke persists, and the coolant level is dropping, they need to take it back and fix it, at their expense, at least the labor charge. Toyota may have made production changes during the year on this engine, and that is what needs to be investigated. That, and if the head gasket is correctly fitted.

Mar 08, 2015 | Cars & Trucks

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What is the head bolt torque spec


Engines are designed with removable cylinder heads, so valve train and cylinder malfunctions can be separated, giving the owner a chance at making repairs instead of replacing the entire engine. When people get themselves involved in pulling a cylinder head off of an engine you know the automobile they're working on is experiencing serious problems.

Unfortunately one of the most sensitive operations is the reassembly process. In particular the head bolt tightening pattern and torque specifications. These must be adhered to or repeat repairs will likely be needed. This article reviews common head bolt tightening patterns, procedures and tips to increase the chances of success.
Cylinder Head Operation A cylinder head sits on top of the engine block forming a combustion chamber where the air fuel mixture is compressed and then burned. This component also contains intake and exhaust ports allowing the cylinder to take in fresh air and fuel then expel the burnt exhaust gases. The most extreme heat and pressure in an engine exists in this area and is sealed by a head gasket.

Compression of the gasket is distributed evenly by the strategic placement of the head bolts. How tight each bolt should be is known as a torque specification and measured with a torque wrench to assure accuracy. The order in which the bolts are tightened to that specification is known as a tightening pattern. Performing these two procedures correctly is vital to the longevity of the repairs.
Head Bolt Torque Principles Before we get into head bolt tightening patterns and procedures let's talk about the uniqueness of the bolt itself. These heavy-duty fasteners use elasticity principles in their design. The bolt is designed to be stretched to a certain point. It's this spring like property that provides the clamping force and holding power when the fastener is threaded into tapped holes on the cylinder block side. The more the bolt is stretched the tighter it becomes.

An important note about specialized head bolts is some are designed to only be stretched one time. When this is the case a service manual will indicate new bolts are required for reassembly. These instructions are also supplied to the factory auto parts department that sells the gaskets. The second thing to be mindful of is that a bolt can be stretched too far when it's taken past its tightening specification. These fasteners can take on a bottle neck shape where the threaded portion looks thicker than the rest of the bolt. These damaged retainers must be replaced.

Sep 02, 2014 | Cars & Trucks

1 Answer

Engine block numbers


SR = engine code
20 = 2.0 liters
Nissan motor made by "bullet", very high performance race engine, some producing over 1500 hp!!!!! Worth about $8500 (thats dollars) here is a sr block:f317699f-3f13-4aff-bfc7-d3d453d10c26.jpg
The Nissan SR engine is a 1.6 L, 1.8 L, or 2.0 L, straight-44-stroke internal combustion gasoline engine manufactured by Nissan Motors. It features an aluminum head and aluminum block with steel sleeves in selected models and features a DOHC 4-valve design, with variable valve timing on select models. The engine was used in many small to medium Nissan vehicles, including high-performance turbocharged variants. It was designed by Nissan as a replacement for the earlier CA series of engines.

The Nissan SR20DE engine was used in over 15 Nissan models. It first appeared in October 1989, and over time it was gradually phased out with the introduction of the QR (low-emissions) engine family. The SR20DE carried nominal power ratings between 130 to 169 Horsepower (96 to 126 kW) from the factory.
The breakdown of the engine code is as follows:
  • SR - Engine Code
  • 20 - 2.0 Litres
  • D - Dual Overhead Cam
  • E - Multi-port Fuel Injection

This engine has the following specifications (SAE, 1991)
The Specs Type: Water cooled, 4 cycle in-line 4 cylinder Combustion Chamber: Cross flow, pentroof type Valve mechanism: DOHC, 4 valves per cylinder, chain drive Displacement: 1998cc Bore x Stroke: 86.0 x 86.0mm Bore Pitch: 97.0mm Block Height: 211.3mm Compression ratio: Crankshaft journal diameter: 55.0mm Crankpin diameter: 48.0mm Con rod length: 136.3mm Valve diameters: Intake: 34.0mm, Exhaust: 30.0mm Dimensions: 685 x 610 x 615mm Maximum power: 140 hp-169 hp at 6400 rpm (SAE net) Maximum torque: 132 lb·ft at 4800 rpm (SAE net) It was used in the following vehicles:
Model
180SX 200SX SE-R Almera Avenir Bluebird Liberty Infiniti G20 NX2000 Prairie Joy Presea Primera Pulsar R'nessa Rasheen Sentra Serena Silvia Wingroad

Dec 04, 2013 | Nissan Cars & Trucks

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I need a print out of how i can change out a head gasket on a 1995 mercury cougar


Removal
  1. Drain engine cooling system.
  1. Disconnect battery ground cable (14301) .
  1. Remove engine air cleaner (ACL) (9600) including air cleaner outlet tube (9B659) .
  1. Loosen drive belt tensioner (6B209). Remove drive belts (8620) .
  1. If LH cylinder head (6049) is being removed, perform the following:
    1. Remove oil filler cap (6766) .
    1. Remove power steering pump front mounting bracket retaining bolts.
    1. Remove generator (GEN) (10346) and belt idler pulley (8678).
    1. Remove power steering pump/generator bracket retaining bolts. Leave hoses connected, place pump/bracket assembly aside in a position to prevent fluid from leaking out.
  1. If RH cylinder head is being removed, perform the following:
    1. Remove drive belts .
    1. If equipped with A/C, remove mounting bracket retaining bolts. Leave hoses connected and position A/C compressor (19703) aside.
    1. Remove positive crankcase ventilation valve (PCV valve) (6A666) .
  1. Remove upper intake manifold (9424) .
  1. Remove valve cover retaining bolts.
  1. Remove fuel injection supply manifold (9F792).
  1. Remove lower intake manifold as outlined.
  1. Remove exhaust manifolds (9430) as outlined.
  1. Loosen rocker arm seat retaining bolts enough to allow rocker arm (6564) to be lifted off the push rod (6565) and rotate to one side.
  1. Remove push rods . Identify position of each push rod . Push rods should be installed in their original position during assembly.
  1. Remove cylinder head retaining bolts and discard.
  1. Remove cylinder heads .
  1. Remove and discard old head gaskets (6051) .
Installation
  1. NOTE: Lightly oil all bolts and stud bolt threads before installation except those specifying special sealant.
    Clean cylinder head, intake manifold , valve cover (6582) and head gasket surfaces. If cylinder head was removed for head gasket replacement, check flatness and sealing areas for scratches of cylinder head and cylinder block gasket surfaces. Refer to Section 03-00 for procedure.
  2. Position new head gaskets onto cylinder block (6010) using cylinder head to block dowels (6A008) for alignment.

    Head Gasket


    a11431c.gif

  3. Position cylinder heads onto cylinder block .
  4. ani_caut.gif CAUTION: Always use new cylinder head bolts to ensure a leak-tight assembly. Torque retention with used bolts can vary, which may result in coolant or compression leakage at the cylinder head mating surface area.
    -ft).
  5. For 3.8L non-SC engine, tighten cylinder head retaining bolts in numerical sequence in three steps as follows:
    1. 20 Nm (15 Lb-Ft)
    1. 40 Nm (29 Lb-Ft)
    1. 50 Nm (37 Lb-Ft)
  6. ani_caut.gif CAUTION: Do not loosen all of the bolts at the same time, only work on one bolt at a time or possible damage to engine or leakage may occur.
    In sequence, loosen retaining bolts two to three revolutions and retighten bolts one at a time in the following manner:
    1. Long bolts:
      • 15-25 Nm (11-18 lb-ft).
      • Tighten bolt an additional 85-95 degrees.
      • Go to next bolt in sequence.
    1. Short bolts:
      • 10-20 Nm (7-15 lb-ft).
      • Tighten bolt an additional 85-95 degrees.
      • Go to next bolt in sequence.


      a11399c.gif


      Item Part Number Description 1 6010 Cylinder Block 2 - Locating Pin (2 Req'd) 3 N802515-S Cylinder Head Bolt (4 Req'd Each Side) 4 6049 Cylinder Head 5 N802516-S Cylinder Head Bolt (4 Req'd Each Side) 6 6A008 Cylinder Head to Block Dowel
  7. NOTE: If original valve train components are being installed, a valve clearance check is not required. If a component has been replaced, perform a valve clearance check as outlined.
    Dip each push rod end in Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford Specification ESR-M99C80-A and install push rods in their original position.
  8. For each valve, rotate crankshaft (6303) until valve tappet (6500) rests on the heel (base circle) of the camshaft lobe, before tightening rocker arm seat retaining bolts to 7-15 Nm (5-11 lb-ft) maximum.
  9. Lubricate all rocker arms with Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford Specification ESR-M99C80-A. Final-tighten the rocker arm seat bolts to 30-40 Nm (22-30 lb-ft). For final tightening, camshaft (6250) may be in any position.
  10. Install exhaust manifolds as outlined.
  11. Install lower intake manifold as outlined.
  12. Install fuel injection supply manifold .
  13. Position valve cover and new valve cover gasket (6584) on cylinder head and install retaining bolts. Note location of ignition wire routing clip stud bolts. Tighten retaining bolts to 9-12 Nm (7-9 lb-ft).
  14. Install upper intake manifold .Install spark plugs (12405) , if removed.
  15. Connect ignition wires to the spark plugs .
  16. If LH cylinder head is being installed, perform the following:
    1. Install oil filler cap.
    1. Install generator/power steering pump mounting bracket.
    1. Install generator .
    1. Install main accessory drive belt tensioner .
    1. Install power steering pump (3A674) .
    1. Install power steering pump support bracket.If RH cylinder head is being installed, perform the following:
    1. Install positive crankcase ventilation valve .
    1. If equipped with A/C, install A/C compressor mounting brackets (2882) and A/C compressor .
  17. Install drive belt and tighten to specification.
  18. Connect battery ground cable .
  19. Install air cleaner outlet tube.
2010&c18=modelyear&c35=wsm%2ccylinder%20heads%2cssd%2c03-01a%2cin-vehicle%20service&s=1249x702&c=32&j=1.3&v=y&k=y&bw=910&bh=359&ct=lan&hp=n&[aqe]

Mar 06, 2011 | Mercury Cougar Cars & Trucks

1 Answer

Does my roadmaster 1992 have a short block engine 350 motor?


The '92 Buick Roadmaster is equipped with a 5.7L TBI 8 cylinder engine.

The 5.7 is the 350 CID. When you inquire about a "short block" however, that is not what is in your car.

A short block means only a partial engine, incapable of running until other parts are added to to complete it.

Usually a short block consists of the basic block, crankshaft, rods, pistons, and rings. Some may come with oil pump, but I think most do not. If you buy a short block, you'll have to either transfer necessary parts (heads, intake and exhaust manifolds, oil pan, oil pump, water pump, etc....) from your current engine to the purchased engine, or purchase the needed parts from a supplier. Additionally, you'll have to purchase the necessary gaskets, seals, etc. to bolt these parts on to the "short block".

This isn't a huge task, but it may well be beyond the scope of the average DIY individual vehicle owner.

If you want to pursue this, you can purchase vehicle specific repair manuals from your local auto parts store.

Whatever you decide to do.....GOOD LUCK!

Jan 16, 2011 | 1992 Buick Roadmaster

1 Answer

Does my 92 buick roadmaster have a short block or long block?


short block just means an engine without the cylinder heads installed on it. That's one way of buying an engine. Along block is the same as a short block except it does have the cylinder heads and maybe the intake manifold as well.

Jan 13, 2011 | 1992 Buick Roadmaster

2 Answers

My 1995 Hyundai Accent has been blowing white smoke, and I need to know if it would be worth the price to fix it?


White smoke is a blown head gasket, the engine has to come half apart, it's not a cheap fix. If it's a high milage car I wouldn't.( it'll possibly cost you over $1500.00 to fix)

Jul 18, 2009 | Hyundai Motor 1995 Accent

1 Answer

2002 Nissan Pathfinder, leak cylinder head and above exhaust


Leaks are usually attibuted to torque sequence. You must follow these exactly or you will warp parts and create leaks. Take it back apart and try it again. You may want to have your head tested to make sure it is flat and true. A head shop should be able to do this for not much $$$. Exhausts can leak because of an inferior gasket also.

Nov 21, 2008 | 2002 Nissan Pathfinder

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