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Tappet Adjustment process

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Tappet Adjustment process
Ruairidh Dunford Offline
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#11
06-07-2024, 04:21 PM
The cap orientation is not relevant - the position of the rotor arm is.
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iandecjak Offline
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#12
06-07-2024, 04:36 PM
Sorry, yes the rotor arm is pointing to No1 plug lead I mention the cap as I think they mention it in one of the books and as I didnt remove the leads from the cap at any time then the orientation/length works with the cap flat in this position. I think it was 180 deg out before as I may have had the wrong TDC as mentioned.
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Ruairidh Dunford Offline
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#13
06-07-2024, 04:49 PM (This post was last modified: 06-07-2024, 04:51 PM by Ruairidh Dunford.)
If you are using traditional points, at top dead centre on the compression stroke, the points should be just about to open for that cylinder.

Depending on the type of rotor arm you have, that could be before or after the point you currently have it set at.
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iandecjak Offline
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#14
06-07-2024, 04:58 PM
I have set the points at TDC to be just on the cusp of the lobe, the rotor arm I have has a lead in edge (not sure how to decribe it).
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Ruairidh Dunford Offline
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#15
06-07-2024, 05:04 PM
Sounds good.
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Ruairidh Dunford Offline
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#16
06-07-2024, 05:05 PM
Give it a tow, as Alan suggests
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Steve Jones Offline
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#17
06-07-2024, 06:28 PM
(06-07-2024, 05:05 PM)Ruairidh Dunford Wrote: Give it a tow, as Alan suggests

Agreed. I once  built a new trials engine and spent the best part of a full day trying to start it. Last resort was a tow and it started on the first revolution. Never had an issue starting it again after that first time.

Steve
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iandecjak Offline
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#18
06-07-2024, 07:30 PM
May take a while as the prop shaft is off as well as most of the bodywork etc. What does towing do?
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Ruairidh Dunford Offline
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#19
06-07-2024, 07:39 PM
Takes all of the load off the electrics, gives the chance for the rings to bite and generally allows everything to settle in and start working.

Not normally necessary but can help in situations like yours.
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Ruairidh Dunford Offline
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#20
06-07-2024, 07:44 PM
A 12v battery may also be your friend here…
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