 | Home > Technical > 3.5 V8 Timing marks |
 
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| Timo Member Since: 14 Jul 2011 Location: Peterborough Ontario Posts: 171   
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Hi everyone.
I am trying to make sure my timing is adjusted on the 3.5 L V8 in my 110. The manual says 5" to 7deg B.T.D.C. I have these marks on the pulley wheel and with my timing light it is coming in right at the last mark BTDC. My problem is that it runs perfectly at idle but when I go to drive it the power is on and off the whole time. Thoughts, opinions, ideas? 
Thanks Tim Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated  Series II in pieces
1984 Defender 110 (3.5l V8 now 300TDI) |
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21st Oct 2012 9:19pm |
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| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443  
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Is that not the symptoms of a problem with the vacuum advance and retard? Could be the distributor is not moving freely enabling the points to vary with load/speed.
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21st Oct 2012 9:39pm |
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| WelshGas Member Since: 01 Oct 2010 Location: Vale of Glamorgan Posts: 935  
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Hi,
I don't have experience of a V8 but a long time ago I had a Ford Anglia that I could set the timing accurately using a static method but it would be almost undrivable and using a timing light it was all over the place. Eventually found it was a hole in the pipe to the vacuum advance retard on the distributor. Often these pipes may be all rubber or metal with rubber connections which perish with time. Worth checking first. LANDYWATCH
Neighbourhood Watch for Land Rover Owners http://www.landywatch.co.uk/smf2/index.php |
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21st Oct 2012 11:13pm |
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| speedymarktd6 Member Since: 02 May 2011 Location: Worcestershire Posts: 102  
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What carbs do you have
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22nd Oct 2012 8:41pm |
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| WelshGas Member Since: 01 Oct 2010 Location: Vale of Glamorgan Posts: 935
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Correct Speedymarktd6. That's how I remember doing the timing on my 4 cylinder engine. I would seal the pipe to the engine otherwise you entrained air and alter the mixture ratio.
 LANDYWATCH
Neighbourhood Watch for Land Rover Owners http://www.landywatch.co.uk/smf2/index.php |
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22nd Oct 2012 9:00pm |
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| Timo Member Since: 14 Jul 2011 Location: Peterborough Ontario Posts: 171
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Thanks for the feedbak guys. Someone posted on another site that the timing marks are 3deg each. If this is correct then my timing should be about 12-15 BTDC which is way off
Does anyone know what the timing marks are? Tim Series II in pieces 1984 Defender 110 (3.5l V8 now 300TDI) |
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28th Oct 2012 1:07am |
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| chris h Member Since: 09 Nov 2009 Location: West Devon Posts: 47 
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I did this on the V8 in my Morgan. Apparently the timing marks on Rover V8's are notorious for being in the wrong place! Mine was a 1978 and they were indeed incorrect, so I checked using cylinder no 1 and successfully reset the timing. I can't remember the exact details, but google it and you will find details. 2009 110 SVX 60th Anniversary - Santorini Black
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29th Oct 2012 7:10pm |
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| noworries4x4 Member Since: 24 Dec 2010 Location: Newton Abbot Devon Posts: 1195
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A better timing light will calculate the degrees for you and show it on the gun, V8 distributors are renound for weak advance springs on the rotating counterweights under the contact plate, basicly means the distributor advances to fast instead of slowly 15 or 16 deg at 4,000 revs. If everything is under control you are not going fast enough.
Every Day 16 MY Discovery 4 Commercial Workshop and Escort Vehicle Weekends 07MY L322 TDV8 Vogue SE Series 1 80" 3ltr 6cyl with overdrive No Worries 4X4 |
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29th Oct 2012 7:18pm |
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