mike2704
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| posted on 29/3/13 at 02:40 PM |
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timing
Hi, wondering if one of you clever bods can help I have just sorted my carbs 40dcoes car runs better but still a bit fluffy.
Its a 1600 xflow need to know best ignition timing setting and have noticed there is no vaccuum advance take off it's got electronic ignition
pickup fitted ebay kit.
Thanks in anticipation Mike 
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britishtrident
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| posted on 29/3/13 at 03:35 PM |
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First thing to do is make sure the mechanical advance isn't sticking they need a tiny drop of oil underneath the rotor arm.
Very common to find them sticking a bit due to lack of lubrication which will cause the centrifugal advance to lag a when the throttle is floored.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Mark Allanson
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| posted on 29/3/13 at 03:36 PM |
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There wont be any figures for your configuration, I would set it to 8° which is retarded but will give easy starting, and progressively add 2° each
test run until you get pinking under load then back it off 2°. I would try to get a vacuum take off if possible to maintain the correct advance curve.
Drilling and tapping the manifold is probably the easiest way.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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rusty nuts
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| posted on 29/3/13 at 04:25 PM |
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quote:
Originally posted by Mark Allanson
There wont be any figures for your configuration, I would set it to 8° which is retarded but will give easy starting, and progressively add 2° each
test run until you get pinking under load then back it off 2°. I would try to get a vacuum take off if possible to maintain the correct advance curve.
Drilling and tapping the manifold is probably the easiest way.
Sounds about right to me short of getting it set up on a rolling road
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snapper
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| posted on 29/3/13 at 07:06 PM |
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Standard cam?
If so standard timing with the caveat that the free flowing 40's will allow a bit more advance
Your simtoms are probably more to do with carb jetting
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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britishtrident
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| posted on 29/3/13 at 08:16 PM |
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The advance setting on Fords of this era tend to be limited by starting considerations as if you set too much static advance and the starter
motor will be fighting the engine trying to start turning the wrong way. If you run into this problem the distributor can be modded to give more
advance higher up the rpm range.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Paul Turner
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| posted on 30/3/13 at 08:54 AM |
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quote:
Originally posted by Mark Allanson
I would try to get a vacuum take off if possible to maintain the correct advance curve. Drilling and tapping the manifold is probably the easiest way.
Sorting a reliable vacuum take of with twin 40's is virtually impossible. You would need to tap all 4 inlets and join together in an attempt to
avoid problems. In all the time I ran x-flows on 40's I never bothered and no others I knew did either. Modified distributors are available that
have an advance curve that suits these engine with no need for the vac advance.
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