OIL PAN THREAD SIZE

v8dak · **Joined:** Wed Jan 10, 2007 2:03 pm **Posts:** 9

Would anyone know the thread size of the oil pan drain plug for the Liberty CRD Enjine? Thank You
Bill

RFCRD · **Posted:** Sat Jan 20, 2007 2:57 pm

v8dak wrote:

Would anyone know the thread size of the oil pan drain plug for the Liberty CRD Enjine? Thank You
Bill

It's a non-standard cut thread size. Did you strip yours? Many are re-taping to a standard thread when it strips.

dritchie · **Posted:** Sat Jan 20, 2007 5:35 pm

Next metric size up is M18 x 1.5

Dave

JDaPP · **Posted:** Sat Jan 20, 2007 6:49 pm

Dealer tapped mine to 5/8-18 inch fine

v8dak · **Joined:** Wed Jan 10, 2007 2:03 pm **Posts:** 9

RFCRD wrote:

v8dak wrote:

Would anyone know the thread size of the oil pan drain plug for the Liberty CRD Enjine? Thank You
Bill

It's a non-standard cut thread size. Did you strip yours? Many are re-taping to a standard thread when it strips.

No I didn't strip it, I was looking on EBAY for the Fram Sure Drain plug, but since I dont know the size of it, cant figure out which one I need.

v8dak · **Joined:** Wed Jan 10, 2007 2:03 pm **Posts:** 9

dritchie wrote:

Next metric size up is M18 x 1.5

Dave

Hi Dave, Mine is not broken yet, just needed to know the thread size, as I found some Fram Sure-Drain's on Ebay, but without knowing what the thread is, I havent the foggyest Idea of which one to get. Would you happen to know the original thread size? Thanks, Bill

RFCRD · **Posted:** Sun Jan 21, 2007 8:21 am

v8dak wrote:

dritchie wrote:

Next metric size up is M18 x 1.5

Dave

Hi Dave, Mine is not broken yet, just needed to know the thread size, as I found some Fram Sure-Drain's on Ebay, but without knowing what the thread is, I havent the foggyest Idea of which one to get. Would you happen to know the original thread size? Thanks, Bill

If it's like a Fumoto, you will need an adaptor or tap the pan to a standard thread cut. It's the angle of the thread-cut that is non-standard.

oldnavy · **Posted:** Sun Jan 21, 2007 9:42 am

v8dak wrote:

Would anyone know the thread size of the oil pan drain plug for the Liberty CRD Enjine? Thank You
Bill

This is not a standard thread, nothing will fit unless you use an adaptor. They can be had here Lubracation Specialist just call and ask. Otherwise you need to retap the oil pan and you just really don't want to do that free hand while pan is on the car. If you screw up the D&T you are out big bucks for new pan, if in worse case you may have a thread failure due to improper D&T and then lose a plug during operation.

v8dak · **Joined:** Wed Jan 10, 2007 2:03 pm **Posts:** 9

RFCRD wrote:

v8dak wrote:

dritchie wrote:

Next metric size up is M18 x 1.5

Dave

Hi Dave, Mine is not broken yet, just needed to know the thread size, as I found some Fram Sure-Drain's on Ebay, but without knowing what the thread is, I havent the foggyest Idea of which one to get. Would you happen to know the original thread size? Thanks, Bill

If it's like a Fumoto, you will need an adaptor or tap the pan to a standard thread cut. It's the angle of the thread-cut that is non-standard.

A-ok, I guess after umpteen messages, I finally get it... DUH!

Seems like a strange thing for a manufacturer to do.

v8dak · **Joined:** Wed Jan 10, 2007 2:03 pm **Posts:** 9

oldnavy wrote:

v8dak wrote:

Would anyone know the thread size of the oil pan drain plug for the Liberty CRD Enjine? Thank You
Bill

This is not a standard thread, nothing will fit unless you use an adaptor. They can be had here Lubracation Specialist just call and ask. Otherwise you need to retap the oil pan and you just really don't want to do that free hand while pan is on the car. If you screw up the D&T you are out big bucks for new pan, if in worse case you may have a thread failure due to improper D&T and then lose a plug during operation.

A-ok, I guess after umpteen messages, I finally get it... DUH!

Seems like a strange thing for a manufacturer to do. Thanks Guys!

BlackLibertyCRD · **Posted:** Sun Jan 21, 2007 12:07 pm

I done several oil changes to my CRD and have no problem with the drain plug and there is no problem with it. If you thread it in by your fingers and don't over tighten it with the ratchet you souldn't have any trouble.

oldnavy · **Posted:** Sun Jan 21, 2007 12:13 pm

BlackLibertyCRD wrote:

I done several oil changes to my CRD and have no problem with the drain plug and there is no problem with it. If you thread it in by your fingers and don't over tighten it with the ratchet you souldn't have any trouble.

Same here, but it is so much easier to flip a valve. It also makes it idiot proof unless you forget to closs the thing before adding oil. Do you know how many times I have seen some idiot at oil change bay or seen guys at hobby shop on base use a 10" or 12" 3/8" ratchet and really crank on the plug when reinstalling? Hundreds!!!

RFCRD · **Posted:** Sun Jan 21, 2007 12:58 pm

oldnavy wrote:

BlackLibertyCRD wrote:

I done several oil changes to my CRD and have no problem with the drain plug and there is no problem with it. If you thread it in by your fingers and don't over tighten it with the ratchet you souldn't have any trouble.

Same here, but it is so much easier to flip a valve. It also makes it idiot proof unless you forget to closs the thing before adding oil. Do you know how many times I have seen some idiot at oil change bay or seen guys at hobby shop on base use a 10" or 12" 3/8" ratchet and really crank on the plug when reinstalling? Hundreds!!!

The one thing I have been wondering about the factory drain plug; Does the odd thread shape cause it to tighten & lock in place with heating and cooling? Seems like it takes a lot more force to remove it that I used to reinstall. I use a torque wrench, @ 35 ft-lbs max to set the plug and it still pops hard on removal. One of these day I know the threads are coming out with the plug, just a gut feeling.

dritchie · **Posted:** Sun Jan 21, 2007 1:30 pm

RFCRD wrote:

oldnavy wrote:

BlackLibertyCRD wrote:

I done several oil changes to my CRD and have no problem with the drain plug and there is no problem with it. If you thread it in by your fingers and don't over tighten it with the ratchet you souldn't have any trouble.

Same here, but it is so much easier to flip a valve. It also makes it idiot proof unless you forget to closs the thing before adding oil. Do you know how many times I have seen some idiot at oil change bay or seen guys at hobby shop on base use a 10" or 12" 3/8" ratchet and really crank on the plug when reinstalling? Hundreds!!!

The one thing I have been wondering about the factory drain plug; Does the odd thread shape cause it to tighten & lock in place with heating and cooling? Seems like it takes a lot more force to remove it that I used to reinstall. I use a torque wrench, @ 35 ft-lbs max to set the plug and it still pops hard on removal. One of these day I know the threads are coming out with the plug, just a gut feeling.

Well.....
That's how mine got screwed up, I tried to torque it to 30 ft-lbs, after it went a complete 360 after hand tight, and no "click" ( good craftsman torque wrench), I said sh@#$#%#%

Dave

oldnavy · **Posted:** Sun Jan 21, 2007 3:31 pm

The design of these threads are poor to say the least, they are easy to over torque and look like they would wear poorly due to their non standard pitch and depth.

One has to think that someone misread the original prints for the oil drain and plug, but no one caught the mistake till they had build a zillion oil pans and plugs. So they just said screw it let someone else worry about it, it would cost too much to correct.

Joe Romas · **Posted:** Mon Jan 22, 2007 8:50 am

[quote="RFCRD] The one thing I have been wondering about the factory drain plug; Does the odd thread shape cause it to tighten & lock in place with heating and cooling? Seems like it takes a lot more force to remove it that I used to reinstall. I use a torque wrench, @ 35 ft-lbs max to set the plug and it still pops hard on removal. One of these day I know the threads are coming out with the plug, just a gut feeling.[/quote]

I think your right on the self tightening :!:

I've got a 93 VW Eurovan with aluminum pan and I have to fight the oil plug every time I take it off and I know I'm not putting it on that tight :oops:

Jeger · **Posted:** Mon Jan 22, 2007 9:09 am

Do you all think we could just put a rubber "O" ring on the plug and just tighten it to like 15 Lbs? Or do you think it would vibrate loose? I am also thinking about buying a spare plug and drill the center out to put in my own valve. :idea:

Maybe I could make one that doesnt stick down as far as the fumoto? (how far is that anyhow?)

Joe Romas · **Posted:** Mon Jan 22, 2007 9:18 am

Jeger wrote:

Do you all think we could just put a rubber "O" ring on the plug and just tighten it to like 15 Lbs? Or do you think it would vibrate loose? I am also thinking about buying a spare plug and drill the center out to put in my own valve. :idea:

Maybe I could make one that doesnt stick down as far as the fumoto? (how far is that anyhow?)

I didn't measure how far down it sticks but it's about where the oil filter level is. But the filter will/could bend and I only vislize my fomoto braking off the pan if I hit something. But snow goobers have not been a problem here this winter though :cry:

The plug looks like it only goes in 5 threads :roll:

oldnavy · **Posted:** Mon Jan 22, 2007 10:51 am

Joe Romas wrote:

Jeger wrote:

Do you all think we could just put a rubber "O" ring on the plug and just tighten it to like 15 Lbs? Or do you think it would vibrate loose? I am also thinking about buying a spare plug and drill the center out to put in my own valve. :idea:

Maybe I could make one that doesnt stick down as far as the fumoto? (how far is that anyhow?)

I didn't measure how far down it sticks but it's about where the oil filter level is. But the filter will/could bend and I only vislize my fomoto braking off the pan if I hit something. But snow goobers have not been a problem here this winter though :cry:

The plug looks like it only goes in 5 threads :roll:

Yes you really do not want to run the Fumoto without a tranny skid plate, it would easy to knock off. On my oil pan I just torqued the plug to 20 lbs and never lost it in 5000 miles. Also I doubt that if you hit the fumoto that it would break the oil pan as it is about 1" thick and that should easly survive the stress and let the brass valve break at the pan. I know that is not something to get excited about eiither.

v8dak · **Joined:** Wed Jan 10, 2007 2:03 pm **Posts:** 9

I got an email from VM Motori, that says the thread size is 16MM X 1.50

OIL PAN THREAD SIZE

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