Spark plug reach

Vikingimike01

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Jul 1, 2018
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Hello forum!

I am here to ask a question here. The spark plug that came with my 50cc (JingYing? Z4C) has a thread that is 14mm. I am in need of test plugs to do a plug chop. We have 5 year old spark plugs that were originally for a VFTS lada, that have almost double the thread lenght, but they have 3-4 prongs. I would like to know, if it's possible to put gaskets or washers on the thread to make it the correct lenght, then check if it's OK by turning the engine over. They would fit, but the threads are longer. Thanks in advance!
 
You can buy or make spacers to place on the plugs threaded area. Sometimes copper washers will fit with a little dremeling.
 
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