Adjusting M42 Cam Timing - Revision history

Grrrmachine at 08:15, 11 May 2012

2012-05-11T08:15:53Z

Grrrmachine at 17:27, 10 February 2012

2012-02-10T17:27:03Z

Grrrmachine at 18:04, 7 October 2011

2011-10-07T18:04:48Z

Grrrmachine at 05:14, 23 September 2011

2011-09-23T05:14:37Z

212.183.134.210 at 15:43, 13 March 2009

2009-03-13T15:43:18Z

212.183.134.210 at 15:43, 13 March 2009

2009-03-13T15:43:06Z

212.183.134.210 at 15:13, 13 March 2009

2009-03-13T15:13:32Z

212.183.134.210 at 15:13, 13 March 2009

2009-03-13T15:13:17Z

212.183.134.210: New page: Tools: 11mm spanner 10mm SMALL ratchet (I do mean small, you don't want to over torque the rocker cover bolts) 1. Strip off the leads and rocker cover 2. Mark the existing cam position w...

2009-03-13T15:13:05Z

New page: Tools: 11mm spanner 10mm SMALL ratchet (I do mean small, you don't want to over torque the rocker cover bolts) 1. Strip off the leads and rocker cover 2. Mark the existing cam position w...

New page

Tools:

11mm spanner
10mm SMALL ratchet (I do mean small, you don't want to over torque the rocker cover bolts)

1. Strip off the leads and rocker cover
2. Mark the existing cam position with a centre punch one mark on the cam and one on the pulley)
3. loosed the 11mm cam pulley bolts on the intake cam
4. adjust cam - From standing at the driver's side (in the uk) pushing the cam away from you is advancing it. (That's clockwise from the front of the engine.

You might want to check roughly what it's set to before you mess about.

First set the engine to TDC (There's a very hard to see notch in the front trigger wheel that lines up with an arrow around the filter housing. There's also a little plug in the webbing of the bell-housing, just beneath the starter - this is where you can insert a pin (or well sized screw driver) to hold the engine at TDC - don't forget to remove this before trying to crank the car!!!

With the engine at TDC the two cyl. 1 cam lobes will be pointing in at each other (at roughly 1/2 o'clock from the front of the engine). At the cyl. 4 end of the cams the two flats that are face up should both have two dots. Put a flat edge across these two flats - when the flat edge meets perfectly with both flats on the cams - the timing is roughly stock.

I forget exactly how my cams are timed right now but power is in from 3600rpm which is about normal I thought - when does yours come on cam?

Don't forget that messing around with this is just moving the power band - everything you gain lower down you loose up top and vice-versa.

[[Category: E30 Engines]]

@@ Line 23: / Line 23: @@
 [[Category: Technical]]
-[[Category: Maintenance]]
+[[Category: Servicing]]
 [[Category: E30 Engines]]
 [[Category: M42]]

@@ Line 16: / Line 16: @@
 You might want to check roughly what it's set to before you mess about.
-First set the engine to [[TDC]] (There's a very hard to see notch in the front trigger wheel that lines up with an arrow around the filter housing. There's also a little plug in the webbing of the bell-housing, just beneath the starter - this is where you can insert a pin (or well sized screw driver) to hold the engine at TDC - don't forget to remove this before trying to crank the car!!!
+First set the engine to [[Dead_Centre#TDC|TDC]] (There's a very hard to see notch in the front trigger wheel that lines up with an arrow around the filter housing. There's also a little plug in the webbing of the bell-housing, just beneath the starter - this is where you can insert a pin (or well sized screw driver) to hold the engine at TDC - don't forget to remove this before trying to crank the car!!!
-With the engine at [[TDC]] the two cyl. 1 cam lobes will be pointing in at each other (at roughly 1 or 2 o'clock from the front of the engine). At the cyl. 4 end of the cams the two flats that are face up should both have two dots. Put a flat edge across these two flats - when the flat edge meets perfectly with both flats on the cams - the timing is roughly stock.
+With the engine at [[Dead_Centre#TDC|TDC]] the two cyl. 1 cam lobes will be pointing in at each other (at roughly 1 or 2 o'clock from the front of the engine). At the cyl. 4 end of the cams the two flats that are face up should both have two dots. Put a flat edge across these two flats - when the flat edge meets perfectly with both flats on the cams - the timing is roughly stock.
 Don't forget that messing around with this is just moving the power band - everything you gain lower down you loose up top and vice-versa.

←Older revision		Revision as of 05:14, 23 September 2011
Line 19:		Line 19:
	Don't forget that messing around with this is just moving the power band - everything you gain lower down you loose up top and vice-versa.		Don't forget that messing around with this is just moving the power band - everything you gain lower down you loose up top and vice-versa.

		+	[[Category: Technical]]
		+	[[Category: Maintenance]]
	[[Category: E30 Engines]]		[[Category: E30 Engines]]
		+	[[Category: M42]]

@@ Line 13: / Line 13: @@
 You might want to check roughly what it's set to before you mess about.
-First set the engine to TDC (There's a very hard to see notch in the front trigger wheel that lines up with an arrow around the filter housing. There's also a little plug in the webbing of the bell-housing, just beneath the starter - this is where you can insert a pin (or well sized screw driver) to hold the engine at TDC - don't forget to remove this before trying to crank the car!!!
+First set the engine to [[TDC]] (There's a very hard to see notch in the front trigger wheel that lines up with an arrow around the filter housing. There's also a little plug in the webbing of the bell-housing, just beneath the starter - this is where you can insert a pin (or well sized screw driver) to hold the engine at TDC - don't forget to remove this before trying to crank the car!!!
 With the engine at [[TDC]] the two cyl. 1 cam lobes will be pointing in at each other (at roughly 1/2 o'clock from the front of the engine). At the cyl. 4 end of the cams the two flats that are face up should both have two dots. Put a flat edge across these two flats - when the flat edge meets perfectly with both flats on the cams - the timing is roughly stock.

@@ Line 1: / Line 1: @@
 '''Tools:'''
-mm spanner
+*11mm spanner
-mm SMALL ratchet (I do mean small, you don't want to over torque the rocker cover bolts)
+*10mm SMALL ratchet (I do mean small, you don't want to over torque the rocker cover bolts)

@@ Line 7: / Line 7: @@
 . Strip off the leads and rocker cover
 . Mark the existing cam position with a centre punch one mark on the cam and one on the pulley)
-. loosed the 11mm cam pulley bolts on the intake cam
-. adjust cam - From standing at the driver's side (in the uk) pushing the cam away from you is advancing it. (That's clockwise from the front of the engine.
+. Loosen the 11mm cam pulley bolts on the intake cam
 You might want to check roughly what it's set to before you mess about.
@@ Line 15: / Line 18: @@
 First set the engine to [[TDC]] (There's a very hard to see notch in the front trigger wheel that lines up with an arrow around the filter housing. There's also a little plug in the webbing of the bell-housing, just beneath the starter - this is where you can insert a pin (or well sized screw driver) to hold the engine at TDC - don't forget to remove this before trying to crank the car!!!
-With the engine at [[TDC]] the two cyl. 1 cam lobes will be pointing in at each other (at roughly 1/2 o'clock from the front of the engine). At the cyl. 4 end of the cams the two flats that are face up should both have two dots. Put a flat edge across these two flats - when the flat edge meets perfectly with both flats on the cams - the timing is roughly stock.
+With the engine at [[TDC]] the two cyl. 1 cam lobes will be pointing in at each other (at roughly 1 or 2 o'clock from the front of the engine). At the cyl. 4 end of the cams the two flats that are face up should both have two dots. Put a flat edge across these two flats - when the flat edge meets perfectly with both flats on the cams - the timing is roughly stock.
 Don't forget that messing around with this is just moving the power band - everything you gain lower down you loose up top and vice-versa.