1989 nissan sentra sgs 4 door has a sr20de silvertop replacement starts after a while but not on inital turn over starts straight away when warm what is the fuel pump type needed for a sr20de is it one that is in the tank or in the engine bay ive got one in the engine bay but think it is not the right type for start up other thing may be so i heard two coolant lines to the throttle body are needed to be connected for cold climate start up these are not present but have been refered in use for a turbo setup on the same engine but were used for the turbo do i need to creat lines for this which one is it the car does not have a catalaytict converter it is straight through piping

2.0L (SR20DE) Engine Firing order: 1-3-4-2 Distributor rotation: Counterclockwise

http://www.autozone.com/repairguides/Nissan-Car-Altima-Sentra-1999-06/Firing-Orders/Firing-Orders/_/P-0996b43f80381f07

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:
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

1342..firing order...distributor turn counter clockwise....

my 1992 nissan sentra will not start. It will trun and turn but will not start. when it does start.It missing alot and turn off very fast then it just turns but won't start

1-3-4-2 beginig on front of engine

1.6L (GA16DE) and 2.0L (SR20DE) Engines
The thermostat is housed in the water outlet casting on the cylinder head on most models. On the GA16DE engines, the thermostat is housed in the water outlet casting attached to the water pump.



Fig. : Thermostat and housing-SR20DE engine





Fig. : Thermostat and housing-GA16DE engine




Fig. : Always make certain the jiggle valve is on the top side-GA16DE engine shown

Hope this helps (remember rated this).

GA16DE and SR20DE Engines



1. Start the engine and allow it to reach normal operating temperature.
2. Run the engine at 2000 rpm for 2 minutes and return to idle.
3. Turn the engine OFF and disconnect the throttle position sensor harness connector.
4. Start the engine and race the engine to 2000 rpm, 3 times.
5. Connect a timing light to the No. 1 spark plug wire and battery.
6. Loosen the distributor hold-down bolt and adjust the ignition timing to 10 degrees BTDC for the GA16DE and 15 degrees for the SR20DE engines.
7. Turn the engine OFF and reconnect the throttle position sensor harness.

_Ricky got this from the web

whyknot87: As far as I know, Nissan did not put a 2400 in a Sentra in 1992 or for that matter any year that I am aware of.
The Sentra had an SR20DE Which was a dual overhead cam engine.
According to Nissan, setting the timing on this engine requires the use of a scan tool as part of the procedure. There is no procedure for setting it without a scann tool.
The timing for this engine is 15 dedrees +/- 2 degrees @700RPM

The other engine this year Sentra used was a GA16DE
which was also a dual overhead cam engine.
This one could be set in a conventional manner with a regular timing light. You must have the engine at normal operating temp.
Disconnect the throttle switch and then you set the timing to
10 degrees +/_ 2 degrees @700RPM

The 2400 engine you probably are referring to is the KA24DE which came in Nissan 240SX and the Nissan Stanza. There are procedures for setting these as well, however I need to know wha4t car and engine you have?
The 2400 had 15 degrees +/- 2 degrees @700RPM

1987 Nissan Sentra 1987 Stalls when warmed up and driven.

cylinder head are nissan sentra's no 1 problem. you should've done a pressure test on ur head. if dats okay, replace the bolts as they wear out over the years....torgue as per manufactoring specs...