Assembly begins on our classic Mini Cooper S 1275cc engine

Looks like Davin has everything he needs to get this 1965 Austin Mini Cooper S 1275cc engine back together... or so he thinks! Assembly begins with camshaft bearings and the camshaft. Then it's onto checking the main bearings and rod bearings for oil clearance, which is when Davin realizes we have the wrong rod bearings. Oops! That doesn't stop him from getting the crankshaft installed as well as assembling the valves and springs into the cylinder head. Thanks to our sponsor RockAuto.com. RockAuto.com is an auto parts retailer founded in 1999 by automotive engineers with two goals: Liberate information hidden behind the auto parts store counter (by listing all available parts, not just what one store stocks or one counter-person knows), and make auto parts affordable so vehicles of all ages can be kept reliable and fun to drive. Visit https://www.rockauto.com/?a=HG-YT-21Q3 to order auto parts online 24 hours a day, 7 days a week, and have them conveniently delivered to your door. Need help finding parts or placing an order? Visit our Help pages for further assistance! Subscribe to our YouTube channel for new videos every day! http://bit.ly/HagertyYouTube Visit our website for daily automotive news, cars stories, reviews, and opinion: https://www.hagerty.com/media Stay up to date by signing up for our email newsletters here: https://www.hagerty.com/media/newsletter/ Follow us on social media: Facebook | https://www.facebook.com/Hagerty Instagram | https://instagram.com/Hagerty Twitter | https://twitter.com/Hagerty If you love cars, you belong with us. Hagerty Drivers Club is the world’s largest community for automotive enthusiasts. Members enjoy valuable automotive discounts, exclusive events and experiences, roadside service created specifically for collector vehicles, and a subscription to the bimonthly Hagerty Drivers Club magazine. Join Hagerty Drivers Club here: https://www.hagerty.com/drivers-club Like what you see? Watch our other series including: Redline Rebuilds | Time-lapse engine rebuilds from start to finish http://bit.ly/RedlineRebuild Barn Find Hunter | Tom Cotter searches the country for abandoned cars http://bit.ly/BarnFIndHunter Jason Cammisa on the Icons | The definitive car review https://bit.ly/JasonCammisaICONS Revelations | Untold Stories About Automotive Legends with Jason Cammisa https://bit.ly/JasonCammisaRevelations Contact us: Suggest and feedback - tips@hagerty.com Press inquiries - press@hagerty.com Partnership requests - partnerships@hagerty.com

Added 23 Aug 2026