Loosening dizzy for timing

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MagicWagon
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Loosening dizzy for timing

Post by MagicWagon »

Thanks to help on here, I finally found my timing marks, set the idle speed correctly and went to check the timing.
Turns out the timing is at about 3 degrees ATDC rather than the required 5 degrees. Might not be here nor there to be 2 degrees out, but I'd like to get it as right as I can.
Trouble is, how on earth do you loosen the dizzy to adjust it ?
I assume it requires loosening the nut under vacuum advance unit with a wire grounded under it, but there seems to be no way to get a spanner or socket anywhere near gripping it.
1983 2.0L Air Cooled Devon Moonraker

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937carrera
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Re: Loosening dizzy for timing

Post by 937carrera »

Short 13mm spanner normally does the job
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

MagicWagon
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Re: Loosening dizzy for timing

Post by MagicWagon »

hmm, cant seem to get a spanner anywhere nearly on it. It is the nut under the vacuum unit isn't it ?
1983 2.0L Air Cooled Devon Moonraker

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937carrera
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Re: Loosening dizzy for timing

Post by 937carrera »

If nobody else can confirm I'll double check in the morning, there's a 13mm that clamps the dizzy in place and another clamp for adjustment IIRC.
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

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bigherb
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Re: Loosening dizzy for timing

Post by bigherb »

There should be an extended nut on the clamp, easy enough to undo with a 10mm open ended spanner (easier with the air filter removed).

Image
1982 Camper 1970 1500 Beetle Various Skoda's, Ariel Arrow

MagicWagon
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Re: Loosening dizzy for timing

Post by MagicWagon »

Hmm. Thanks for the picture. I don't remember seeing anything like that, but I'll have another look when I get home.
Cheers.
1983 2.0L Air Cooled Devon Moonraker

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bigherb
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Re: Loosening dizzy for timing

Post by bigherb »

Sometimes the extended nut has been lost and a standard M6 nut fitted. The extended nuts are no longer available but you can use an m6x40mm stud connector instead.
https://www.ebay.co.uk/itm/HIGH-HEX-CON ... Iw1yZwYOAQ" onclick="window.open(this.href);return false;
1982 Camper 1970 1500 Beetle Various Skoda's, Ariel Arrow

MagicWagon
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Re: Loosening dizzy for timing

Post by MagicWagon »

Thanks for all the help. The photo showed me what I should be looking for. I was imagining something completely different so was blind to it.
TIming now adjusted :D
1983 2.0L Air Cooled Devon Moonraker

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