BIG DESIGN FLAW? Toyota 3.4L V35A Twin Turbo V6 Premature Engine Failure & Comprehensive Teardown!

Video Description

Today we have a VERY special teardown. This is a 3.4L Twin Turbo V35A from a 2023 Toyota Tundra and it is RECALLED! This engine has nearly locked up with only 38000 miles and Toyota is blaming the engines affected under the recall on "debris left over from machining". Is that true? or is that just the line they use to say "we made mistakes"? In this teardown we tear this engine ALL the way down to find out. This is the V35A-FTS. A 3.4L Twin Turbo direct injected V6 found in the 21+ Tundra, 22 up Sequoia, GX550, LX600 and LS500. This engine has been controversial to say the least as every engine it replaced is considered an extremely reliable engine and this one is RECALLED for catastrophic engine failure. So far, it seems Toyota has taken a step backwards in their reliable reputation with the implementation of this engine. For parts visit www.Importapart.com or email us at [email protected] For other I Do Cars content check out my wife's channel at https://www.youtube.com/@TheCarWifeLife For cool car related shirts, click here! https://www.blipshift.com/?utm_source=i-do-cars&utm_medium=affiliate Every week I post a new teardown video of a blown up or suspected bad engine. Check out a few of my favorites! Why am I doing this? My name is Eric and I own and run Importapart, a full service auto dismantling business. Part of our model includes buying blown up and bad engines to dismantle for parts. We salvage the good, sellable parts and recycle rest. No, we don't rebuild engines but we do sell parts to people who do! As always I hope you enjoyed this video. I love all of the comments, feedback and even the criticism. Catch you on the next one! -Eric 00:00 Intro 02:47 Removing the plugs, no issues here 03:57 Unbolting the charge pipe, intercooler and upper plenum 08:03 Cracking the lower manifold bolts loose and inspecting the intake ports. The valves have a weird dirt pattern? 09:02 Peeling off the LH Valve cover, clean in here! 10:39 Unbolting the RH Valve cover, no issues in here either. 11:40 Clearing the front timing cover of coolant pipes, thermostat and pulleys. Too much plastic here! 13:48 Future problems for the V35A? Plastic coolant pipes and so many mating surfaces! 15:09 Removing the water pump 16:12 Unbolting and removing the outer timing cover 17:31 Inspecting and removing the timing system, it *Looks* "Fine" but... 20:59 UH OH. That doesn't go there. 22:06 Removing and dismantling the oil pump. Looks decent in here 23:07 Unbolting the rear front inner back timing cover 25:02 Crammin the cam cramps loose on the LH Bank, removing cams, cam tower and inspecting valve train 27:01 Crackin the SUPER LOUD head bolts loose on the left bank and removing the cylinder head 28:36 Left Science 28:51 Crammin' the cam craps loose on the RH bank, removing cams and tower to inspect valvetrain 30:17 Cracking the RH cylinder head bolts loose, lifting the head and inspecting pistons and bores 31:28 Right Science 33:06 Zippy do da the lower oil pan bolts out and SPARKLES 34:36 Unbolting and prying the upper pan off 36:13 Loosening the main cap bolts to see if it rotates easier 38:14 Lifting the bed plate and OH MY. There's the money shot 40:33 EJECTO MAIN BEARING CUZ 40:49 Cracking the rod cap bolts loose, removing caps and bearings and plucking the crankshaft out of the block 41:29 Pushing the rods and pistons out of their bores 42:19 Full rotating assembly inspections. Rod and main bearings, crankshaft, rods, pistons, rings, bores, block and journals. Why do these ACTUALLY Fail? 49:13 Summary