Great video again and the series so far. As mentioned below, I believe you've found the problem so if it were me I would rebuild instead of replace assuming everything else is OK. Curious to see the IMS bearing condition.

@HelpMeDIY

Жыл бұрын

+MC7 ✊🤞

Loving the videos AND the comments, a rare combo on the web :)

@HelpMeDIY

Жыл бұрын

+Hans Westerbeek haha right?!

The mystery part at ~18:00 appears to be the part of the destroyed lifter that actually presses on the valve.

@HelpMeDIY

Жыл бұрын

+Aaron Averett exactly!

Really enjoying these videos. Always looking forward to the next one to see what problems you find etc.

@HelpMeDIY

Жыл бұрын

+Gary L thanks! 🍻

6:16 damn... the valve really smashed through that!

@HelpMeDIY

Жыл бұрын

+David Shaw 😆

Enjoying this a lot, Aaron. I'll never be launching into a project like this myself, but it is rewarding watching somebody else do it! And if I ever need to have my 997 engine worked on, at least I'll have a pretty good idea of what is involved. Thanks, brother!

@HelpMeDIY

Жыл бұрын

+Tom Fitch you got it! Thanks for watching 🍻

I think I would repair and rebuild what you have already got. The alternative is getting a complete replacement motor I guess, but it’s unlikely you’ll be able to have that much confidence in a replacement unless you can thoroughly test it - ideally with it still running in the donor car - and that’s likely to be quite a bit more expensive.

@HelpMeDIY

Жыл бұрын

+Rob Corner that’s where I’m leaning at the moment.

FWIW, there is a kit, that I wasn't aware of when I had my IMS bearing replaced, that involves replacing the bearing with an oil fed one with the oil being supplied from a modified oil filter mount. It also involves a slight modification to the bell housing. I don't know any other details but it was used by Edd on a Wheeler Dealers episode when fixing a 911. Should work on this engine too if bearing needs replacement.

@HelpMeDIY

Жыл бұрын

+John Adams I’ve seen that one too

Removal of the AOS with the engine in the car is quite possible with a set of spring clamp pliers. However, COMMA, it is NOT all that much fun...

@HelpMeDIY

Жыл бұрын

+George Saare yes, I’ve done it. And any minute now UPS will be bringing me one for my 987 that I’m dreading 😬

You probably even found the part that caused the cylinder cover to crack. My first assumption that this was the cause of the problem, is being confirmed more and more. As far as can be seen, the engine block looks good. No cracks to be seen. 😎 Cylinder liners also look good, no bore scoring recognizable. So far I see no reason NOT to repair the motor! 🥳

@HelpMeDIY

Жыл бұрын

+Richard Hagen I’m with you!

The pistons were clearly hitting the valves, you can see the marks on the pistons` tops. Wonder what the valves look like. It`s also surprising that the valve didn`t break considering the car was running chain-less :)

@HelpMeDIY

Жыл бұрын

+Fungaricum I’ve seen a picture of a new piston, and they are shaped like that… Mostly… I can feel a little ridge between the pistons, which I think is not normal, but only on Bank 1. I have a feeling the chain did not break until after the previous owner did his repair and tried to start it, but it never started.

@Fungaricum

Жыл бұрын

@@HelpMeDIY yeah, maybe he didn`t set the timing right. The ridge is not normal, the piston top should be evenly covered in carbon. That`s a contact for sure. That does not necessarily mean the valves are bad though, they can withstand quite a bit of force without permanent damage.

So many exclamations watching this episode from here. Definitely should do a rebuild or the necessary work to make it come alive. I have 💯 confidence you will succeed whatever your decision is!

@HelpMeDIY

Жыл бұрын

+Paul Bouchard thanks for your confidence and enthusiasm! 🤜

@lunabouch

Жыл бұрын

@@HelpMeDIY very important to have positive reinforcement, it’s the teacher in me.

those markings on the piston looks like you have bent valves - as i would expect from a miss timed engine

@HelpMeDIY

Жыл бұрын

+Anthony's Channel at least one I think

@sys1aeg

Жыл бұрын

@@HelpMeDIY you need to remove torque converter by taking the starter out and removing 6 6mm Allen key bolts from fly wheel Through starter hole

@HelpMeDIY

Жыл бұрын

@@sys1aeg yes, I know… the issue was not being able to rotate the crankshaft because the chain was broken and jammed

How do the valves look... have they been kissing the pistons? The broken lifter might have been caused by the valve meeting the piston and popping the center out of the lifter. It's killing me to wait for the next installments!

@Fungaricum

Жыл бұрын

You can actually see that the valves were contacting the pistons, there are clear marks on them.

@michaelskinner896

Жыл бұрын

Yes, that was the first thing I noticed on the piston tops. There appears to have been a little interference. I was hoping he would've shown the valves on the heads. That punctured bucket tappet indicates that there's at least one bent valve. Ouch.

@Fungaricum

Жыл бұрын

@@michaelskinner896 Once my boxster jumped timing and apart from those marks on the tops everything remained intact. Even the valves did not get bent. Looks like it`s small interference, indeed. This engine probably ran several revolutions with broken chain.

@HelpMeDIY

Жыл бұрын

+Grant Hargrave from what little I can see of them, they all look fine except for the rogue one. It looks “stuck”

You ever consider it might be the IMS ??

@HelpMeDIY

Жыл бұрын

+Mo Hella of course… but I’m 90% sore it isn’t.