The Good Times Motorbike Channel on Instagram: "ENGINE VALVES WORKING - here’s our friend Dave Mitchell showing us the inner valve workings the BSA A65 Thunderbolt engine. Check out our MAIN YouTube CHANNEL (link in BIO) if you’re into this sort of thing. This clip is an excerpt from a series we’re producing called: LOW BUDGET CLASSIC MOTORCYCLE RESTORATION PROJECT - The Everyday Bike Have a great day! @davemitchell639 #bsaengine #bsamotorcycle #bsamotorcycles #bsamotorbikes #classicmotorcycle #