Decided I was going to be a hippy in 1982 so I bought an old Kombi with an engine knock. It had a sliding door on both sides (to give access in narrow European alleys).
Pulled down the engine - the knock was the crankshaft broken right through a counterweight.
Decided to be a bogan hippy and fitted oversized barrels, extractors, cam, mechanical advance
distributor, Weber, oil cooler, twin port heads etc.
Would do about 130 flat out.
But it got hot and the grease used to install the rear main seal loosened the big screw holding the flywheel onto the crankshaft. Changed that out while tripping but managed to get it right.
The overheating was eventually fixed with a high-volume oil pump but a head cracked between an exhaust valve seat and the plug during a high-speed insanity run one moonlit night (now that’s a story ...).
Regretted all that madness slightly later on but at the time it was fun - the bus would lift the front wheels off the ground if both side doors were slid back !