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Morgan Carbtune  Rating:  Rating
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 Posted: 06-07-2011 04:13 pm
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jarnol123
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Thanks...I'll check the springs tonight...i'm pretty sure that i don't have the clamp nut (green arrow)..but i'll check..

Will report back later...thank again

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 Posted: 06-09-2011 03:39 am
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jarnol123
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So I got the timing set at 10 BTDC at idle...however, the exhaust is smoking more than usual and i'm getting some spitting around the carbs.

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 Posted: 06-09-2011 04:25 am
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subwoofer
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A few questions:

- How is the max advance?
- Have you reset the idle mix screws after fiddling with them earlier?
- What are your idle revs?

It is not uncommon for cammy engines to spit back a bit at idle, so that in itself is not much of a worry.

The smoking could be from being overly rich, from oil spills on the exhaust manifold, coolant due to a failed head gasket, worn valve guides, worn cylinder bores... "Smoke" is not a lot of info to go on, colour, smell and amount of smoke would say a lot more. Does it smoke after fully warmed up?

--
Joachim

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 Posted: 06-09-2011 04:41 am
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jarnol123
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Didn't go too far on max advance cause of smoke but it went back 5 or so degrees when I revved it a bit.

I need to reset the idle mixture.
Idle revs are about 1100

As for the smoke it's blueish in colour and quite a bit of smoke (smells a little petrolish in nature)...I was not getting any smoke before when I had the timing way in advance though. I didn't notice any smoke around the engine...just mostly from the exhaust.

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 Posted: 06-09-2011 09:01 pm
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subwoofer
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Your idle is a little high, but nothing to worry about. IIRC factory spec is 900-950. Reset the idle mix to something sensible.

Blue smoke is usually a sign that you are burning oil. Check the oil in the sump, does it smell of petrol? Does the crankcase vent go back to the intake? Try disconnecting it and see if a lot of oil fumes are coming from the sump.

I assume you have figured out how to properly use the timing gun? When you say "it went back 5 degrees" you mean that it advanced to 15 or so degrees, right?

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Joachim

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 Posted: 06-15-2011 05:18 pm
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subwoofer
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Have you looked more at the engine? Are you getting closer to a drivable car?

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Joachim

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 Posted: 06-15-2011 06:34 pm
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jarnol123
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Ok so i got the timing set, the carbs are balanced. I checked the oil and there is no smell of petrol. Still getting smoke from the exhaust but not too bad. I did take a small video so you can see the engine running. I'll try to attach it here.
My plan is to change the oil and filter and put in 20w50.
There is still some spitting from the engine though

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