Oil extraction - is it possible

[Last Lemming]

I have an oil extractor I use in my 944 Porsche turbo because it has a dipstick and I can go down the dipstick tube and extract the oil. Easy Peezy, however, on the Supra there is no dipstick. Is there any way you can extract oil on this car from above or only through draining it through the oil pan?

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[Uwatm8]

It’s certainly possible, but it’s documented that using the oil extraction method leaves a ton of old oil left in the sump.

its really easy to drain the oil in this car, i Personally wouldn’t extract it from the top.

 

[Last Lemming]

There’s a little bit more to the story, I think, I’m not sure, but I think, I may have potentially stripped the old pan drain plug, or at least began to strip it. Crazy part is I was barely giving out any twerk by hand with a small ratchet. It’s good for now, but if they I take it out and it’s stripped, that’s it. I’ll need to drill it out or pull the pan, neither of which I really want to do. I figured if I could extract it I can push that problem off too much later.

 

[lucky phil]

There’s a little bit more to the story, I think, I’m not sure, but I think, I may have potentially stripped the old pan drain plug, or at least began to strip it. Crazy part is I was barely giving out any twerk by hand with a small ratchet. It’s good for now, but if they I take it out and it’s stripped, that’s it. I’ll need to drill it out or pull the pan, neither of which I really want to do. I figured if I could extract it I can push that problem off too much later.

Well without a dipstick tube I cant see any way to use the extraction method. Might be a good idea to buy yourself an intermediate tap of the correct thread dimension and pull the drain plug. Run the tap through the sump threads and see how it goes.
Drilling the plug threads and fitting a Helicoil isn't the end of the world although I don't know how much room you have around the drain plug for a drill etc. A Timesert repair is also preferable to a Helicoil in my opining as well.

Phil

 

[MYA90SUPRA]

You could use cat certs to fix the plug also. They are like timecerts, but have 4 locking tags that keep the insert from coming out. The biggest downfall to them is the hole size you need drill to fit the insert.

 

[Last Lemming]

“Cat cert”? Is that the full name? I searched and didn’t see what you described.

 

[MYA90SUPRA]

“Cat cert”? Is that the full name? I searched and didn’t see what you described.

https://www.google.com/url?sa=t&sou...Qjjh6BAgXEAI&usg=AOvVaw25ltJmf6Xu88ymZJA9H-dY

 

[Eddy90]

There’s a little bit more to the story, I think, I’m not sure, but I think, I may have potentially stripped the old pan drain plug, or at least began to strip it. Crazy part is I was barely giving out any twerk by hand with a small ratchet. It’s good for now, but if they I take it out and it’s stripped, that’s it. I’ll need to drill it out or pull the pan, neither of which I really want to do. I figured if I could extract it I can push that problem off too much later.

Upsize the drain hole from a M12 to M14 with a tap, and replace the M12 drain plug with a valved M14x1.5. At least that way you arent doing to worry about stripping the stupid weak threads again lol.

Time-serts are also an option, but taking a drill pit into a pan seems scary.

 

[lucky phil]

Upsize the drain hole from a M12 to M14 with a tap, and replace the M12 drain plug with a valved M14x1.5. At least that way you arent doing to worry about stripping the stupid weak threads again lol.

Time-serts are also an option, but taking a drill pit into a pan seems scary.

Yep you can do that. If you are going to upsize the plug the 14x1.5 looks like the most popular drain plug thread size. That means you only need to remove .5 or 1/2 mm from the existing hole with the drill. Should be pretty easy as long as the access is ok. Also make up a tapping guide to get it square with the hole.

Phil

 

[Davidr3]

There’s a little bit more to the story, I think, I’m not sure, but I think, I may have potentially stripped the old pan drain plug, or at least began to strip it. Crazy part is I was barely giving out any twerk by hand with a small ratchet. It’s good for now, but if they I take it out and it’s stripped, that’s it. I’ll need to drill it out or pull the pan, neither of which I really want to do. I figured if I could extract it I can push that problem off too much later.

What makes you think it's stripped?

 

[Teleguy11]

What makes you think it's stripped?

That was my next question.

 

[XtremeMaC]

Schrodinger's oil pan

 

[Last Lemming]

You know that feeling you get when your tightening a bolt and it’s snug, but your think it still needs a pinch more to be safe and when you turn it it to snug it up that little bit more it rotates but doesn’t get tighter.

that’s why I think, just that gut feeling.

 

[MYA90SUPRA]

You know that feeling you get when your tightening a bolt and it’s snug, but your think it still needs a pinch more to be safe and when you turn it it to snug it up that little bit more it rotates but doesn’t get tighter.

that’s why I think, just that gut feeling.

I recommend a good torque wrench for that drain plug.

 

[Last Lemming]

I have a SnapOn TW, but I used a small hand ratchet so I couldn’t put too much torque into it. I’ve read several stories on this forum and others that say they stripped the plug using a torque wrench and torquing to spec.

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