GT-Four Engine Autopsy 3SGTE

In todays video I show you around the engine internals and try and trace what exactly has gone wrong. I suspect a mixture of low oil pressure and bad workmanship. I'd be interested to here what you have to say in the subject too

[@valterbeicinha9633]

Cheers! You got such a big positive attitude, we differ on the taste of the gen since I love the 4th gen ST185

[@PaulinhoThompson]

An engine autopsy at it's best. A very informative video 👍.

[@rowanlewisuk]

Great term that is. Think I'll rename the video to that 😊 glad you enjoyed

[@davidellis8434]

Cylinder 3 on the 3SGTE in known to run the hottest and usually if there's a failure it on No 3. People say if fitting and EGT sensor to put it in the runner for that cylinder

[@ABeans07]

Explain that better, the sentance is incomplete

[@steve323f]

Going off some things I've seen, I think who ever has rebuilt the engine has reused the head bolts. Technically they can be reused but are a major pain to re use. If the same ones are reused and over torqued when they may be stretched already can cause a major imbalance causing lots of wear internally, even between the combustion chambers. Because of the wear from left to right it's almost as if they were tightened left to right and torqued hand tight.

[@rowanlewisuk]

The bolts were noticably different torque when removing them so totally agree this engine never saw a torque wrench

[@steve323f]

@@rowanlewisuk I have every faith you'll have her up and running. 👍

[@johnathanwilliamson]

Exciting times. Good investigation, good summary, good video! Good luck with the next steps.

[@timoliver9895]

Very good video, thanks for taking the time to explain it all. Its very much appreciated by all us engine build noobs. Really looking forward to learn more! (:

[@rowanlewisuk]

Thankyou for the comment. I have had a couple comments asking for this sort of video so will try to explain more in the future aswell 😊

[@RB-lt8kt]

In the 90's my 1985 Celica engine had crank and piston failure due to poor previous owner servicing and lack of oil changes. A couple of days after buying and serving the car engine went BANG. Con rod got bent. Rebuilt it and it ran perfectly with reground crank, bearings and new con rod. Replaced piston rings and clutch at same time. Also the rose pickup for the oil in the sump needed a good clean. Chain drive tensioner was also serviced with new seal and cleaned. I flushed my block and head several times in degreaser and clutch cleaner. Looks like your engine was poorly rebuilt without checking the whole engine before reassembly.

[@rowanlewisuk]

It's definitely had a bad rebuild. Will be up and running in no time 😊

[@JoshSheppard2]

Those bearing shouldn’t spin, they’ve got locking tabs on them which loc against the cap (on the Conrod bearing) and the conrod on the cap bearing. They’re designed so they can’t spin and for it to fail so quickly after the rebuild is very suspicious, I would say there was no oil in it or low pressure. Maybe they started it without oil by mistake

[@rowanlewisuk]

I can see the locking tab. The bearings been munched. I agree maybe assembly lube wasn't used

[@SiriusRising205]

Interesting videos, thanks for making them. I think you are probably underestimating the money involved to do this properly. I'd also get everything measured properly before you put it back together. Look forward to seeing the coming videos. :)

[@rowanlewisuk]

I usually do under estimate the price of things we shall see i guess good idea for a future video. glad you like the videos :)

[@johnfarias7230]

Seems to me that things were to over talked which low in the clearances or starving of oil

[@stuartlew1229]

forgot get the crank flywheel clutch assembly and dampener balanced together

[@BobsBikingAdventures]

I fear you're giving the previous builder too much credit. I'd wager they started the engine without any oil in it, then remembered, uttered some expletives, filled it with oil, shrugged and sent it on it's way!

[@stuartlew1229]

going to be honest ... bin the engine ... all of it ... the oil pump is probably scored so add that to the rebuild ... you can pick up a full engine and gearbox for less than a grand ... if you want to rebuild the engine you will need to have the block cleaned the block will need the head bolt threads checked ... i would recommenced studs not bolts ...you have opened a big can of worms ... journals on the cams ... what about the cam caps ... my opinion ... bin it spend a bit of time on the forums and fb forums loads of help and loads of parts that you can use if you want to go down the rebuild route

[@rowanlewisuk]

I'm starting to think that way but I can't find engines for less than a couple grand!

[@stuartlew1229]

FB pages will get you a engine cheap with some history as a lot of the cars are rotting away now

[@rowanlewisuk]

@@stuartlew1229 how much you think I'd have to pay?

[@stuartlew1229]

@@rowanlewisuk i will ask about see what i can find ... one on FB market place breaker in Bradford