Editing Timing

[[Category:Engine]] 
[[category:RB30E]]

=Timing belt/Tensioner, exploded view=

[[Image:Timingbelttensioner.jpg]]
[[Image:Timingxplod.jpg]]


==Installation==

#Ensure that the number one cylinder is on TDC with the crankshaft gear mark aligned with the one on the oil pump housing.
#Ensure that the dowel pin on the camshaft gear is in the uppermost position.
#Instal the tensioner and spring to the front of the cylinder block ensuring that the spring end engages in such a manner that the tensioner will tension the belt.
#Instal the flat washer and then the wave washer with the concave part of the washer towards the tensioner. Position the tensioner pulley awway from the timing belt position using a suitable Allen key and temporarily tighten the locknut.
#If a new timing belt is being installed, marks should be on the belt to indicate the correct position of the [[camshaft]] and crankshaft timing marks. If no marks are present, put a mark on the belt above one groove, and count back 53 grooves from this position. Put another mark above the 53rd groove.
#Slide timing belt onto the [[camshaft]] and crankshaft gears ensuring that the marks on the belt are aligned with the timing marks on the camshaft and crankshaft gears and that the directional arrow is pointing as marked on removal.
#Loosen the tensioner locknut and allow the tensioner to tension the timing belt.
#Using a suitable Allen key, rock the tensioner in both directions two or three times to ensure correct belt tension.
#While holding the tensioner in position with the Allen key, tighten the tensioner locknut to the specified torque.
#With the dowel pin on the camshaft gear uppermost, tighten the rocker shaft bolts for cylinders number 4, 5 and 6 to the specified torque.
#Rotate the engine in a clockwise direction, using a suitable spanner on the crankshaft pulley bolt until the dowel pin on the [[camshaft]] gear is pointing downwards. With the dowel pin in this position tighten the rocker shaft bolts for sylinder number 1, 2 and 3 to the specified torque.
#As a final check rotate the engine clockwise again until the dowel pin is uppermost and check that all rocker shaft bolts are torqued to specifications.
#Instal the timing belt guide plate to the crankshaft pulley with the concave surface facing outwards.
#Instal the upper and lower tiiming belt covers ensuring that the seals are correctly attached. Tighten the retaining bolts to the specified torque.
#Replace the rocker cover.
#Installation of the remaining components is a reversal of the removal procedure.



==Setting to factory timing==

This guide will help you to adjust your idle speed and ignition timing to factory specifications.
If you want to advance your timing, we recommend that you use PULP to reduce the risk of detonation occuring.
Do not attempt this without a timing light, not all detonation is audible, and you could cause permanent damage to your motor. 


#Drive the vehicle until the engine is at operating temperature.
#Connect the timing light (and tachometer, if used) to the battery and No. 1 spark plug wire per the manufacturer's instructions.
#Ensure that the transmission is in Park or Neutral, and all lights/air-con are turned off.
#Accelerate the engine two or three times to approximately 2,000 - 3,000 RPM without load. Allow the engine to idle for at least one minute.
#Check that the idles speed is below 1,000 RPM.If the idle speed is below 1,000 RPM, proceed to operation 9. '''If the idle speed is not below 1,000 RPM, proceed as follows.''' *Stop the engine and disconnect the wiring connector from the auxiliary air control valve (AAC). The AAC valve is part of the idle air adjusting unit (IAA unit) which is mounted on the plenum chamber.
#Start the engine and adjust the idle speed adjusting screw until the engine is idling at 650 RPM.
#Stop the engine and connect the wiring connector to the AAC valve. Return to operation 4.
#Check ignition timing. The ignition timing should be 15 ± 2 deg btdc. If necessary, loosen the distributor clamp bolt and rotate the distributor body until the ignition timing is correct at 15 ± 2 deg btdc.
#Tighten the distributor clamp bolt securely and return to operation 4.
#Quickly accelerate the engine two or three times to approximately 2,000 - 3,000 RPM without load and check the idle speed.

The idle speed should be 700 ± 50 RPM.

If the idle speed is correct the idle speed adjustment is completed.

[[Image:Timing-IAA.jpg]]

[[Image:Timing-marks.jpg]]


=='''If the idle speed isn't correct, proceed as follows...'''==

*Stop the engine and disconnect the wiring connector from the AAC valve.

*Start the engine and adjust the idle speed to 650 RPM using the idle speed adjusting screw.

*Stop the engine, connect the wiring connector to the AAC valve, start the engine and check that the idle speed is 700 ± 50 RPM.

If the idle speed is below the specified value, adjustment can be made by turning the diagnosis mode selector on the control unit until the specified speed is obtained.
If the idle speed is above the specified value, or if the specified speed cannot be obtained by adjusting the diagnosis mode selector, you may have a faulty AAC valve

*Return to step 4

==Advancing the timing==


To advance your timing, you will need a timing gun and a size 10 spanner.

'''1:''' Drive or idle the car until it is at it's normal operating temperature (when the temp guage is at half way, or when it is at it's regular position while you drive). Then turn it off.

'''2:''' Connect the positive and negative clamps of the timing gun onto the corresponding positive and negative terminals of the battery.

'''3:''' Connect the 3rd clamp, the plastic one, onto lead number 1. (Look on the distributor cap if you're unsure which leads are what numbers. Number 1 is the closest to you, while you're standing in-front of the car)

'''4:''' Start the car and allow it to idle.

'''5:''' Point the timing gun down towards the belts between the radiator fan and the engine block and press the trigger.

'''6:''' You should see 7 white marks appear on the belt closest to the engine block (or 1 orange mark and 6 white marks). Also, if you look hard enough, you will see a groove / mark in the engine block.

'''7:''' Standing in-front of the car, looking over the radiator, each mark means the following when lined up with the groove / mark on the engine block -


         <nowiki>    | TDC    | 5    | 10     | 15      | 20     | 25      | 30 BTDC

            The timing should be at  ^  That mark. 15 BTDC.</nowiki>

'''8:''' Loosen the bolt holding the distributor in position with the size 10 spanner, but not too much, only enough to allow it to be steadily moved.

'''9:''' Gently move the distributor, either way. Have the timing gun turned on and pointing at the belts again while you do this. You will see the 7 marking move also, and the car's revs will rise or drop depending on which way you are moving the distributor.

'''10:''' Line the 5th mark, (the one above labeled "20") up with the groove / mark on the engine block.

            <nowiki> | TDC    | 5    | 10     | 15      | 20     | 25      | 30 BTDC

       So that the mark on the engine block is ^ Here.</nowiki>

'''11:''' Very gently tighten the distributor bolt back up, and make sure you do not move it at all while tightening the bolt.

'''12:''' Point the timing gun at the belt again, to make sure the 5th line (20) is still aligned with the engine block mark.

'''13:''' Turn the car off, remove the timing gun clamps and shut the bonnet.

Now take the car for a test run..

If the engine "pings" (creates an usual loud sound that sounds like sand or gravel falling onto metal, or like wire tapping on a metal drain) under load and at high revs (like when you drop back a gear), then you should either take the timing back more towards the 4th mark (15) or run the car on premium unleaded fuel.

You can adjust the timing to where-ever suits you, just repeat the above steps. Always take the car for a test run afterwards, and make sure that it operates well while ilding, instant accelleration taking off from an idling position and runing at high revs and under load (such as driving up a steep hill).

If you are concerned or not happy with any results, then return the timing to the 4th mark (15 BTDC).



=Distributor installation=

I had to re-time my car as it was running fairly badly, really doughy coming off idle. So, by the looks it was adjusted fully advanced, yet rocking a pretty sweet -30deg retarded, so it was out a tooth.


First step, set the car at TDC, as I haven't changed a belt or anything all I had to do was set the harmonic balancer to show TDC like so:

[[Image:rb30_timing_1.jpg]]


Then, you need to remove the distributor cap and ensure that the rotor button is pointing at cylinder one like this:

[[Image:rb30_timing_2.jpg]]


If the rotor button is 180 degrees out when you take the cap off, spin the harmonic balancer one more time, you have it on the exhaust stroke not the compression stroke.

Loosen the bolt holding the distributor in, and pull the distributor out.

With the distributor out, you need to set the little dimple to line up with the little notch:

[[Image:rb30_timing_3.jpg]]


When you insert the distributor back into the engine, it will turn so that the notch lines up with the bigger line on the right-hand side.

To ensure you have enough space to adjust the timing (and this was the hard bit for me to work out, took me forever to suss it) like this:

[[Image:rb30_timing_4.jpg]]


You need to put the distributor into the head like shown in my picture, 5mm to the left of the casting mark:

[[Image:rb30_timing_5.jpg]]


If done correctly, the car will start perfectly and idle fine, adjust it at your pleasure, I chose 15deg advanced. If you have managed to insert it as per my picture, you should have plenty of adjustment space either way.




'''Contributors:''' E.k, SKY031, Naife, Gavin, Pablo Rodriguez, Session