Turbo clamp update Facebook - V-band

[hubcap]

I came across a comment by a guy on Facebook who said he was able to get the PN - 653332 from RAM. This is the clamp for the M20K 231 with the TSIO-360-LB or GB engine. I believe the clamps that were on when the AD came out will all be timed out of service later this year.
 

I gave RAM a call and they had them in stock as of last Friday. You will need to order it using the RAM # - 2177-300. The price is $499.

https://www.ramaircraft.com

 

 

[Ragsf15e]

1 hour ago, hubcap said:

I came across a comment by a guy on Facebook who said he was able to get the PN - 653332 from RAM. This is the clamp for the M20K 231 with the TSIO-360-LB or GB engine. I believe the clamps that were on when the AD came out will all be timed out of service later this year.
 

I gave RAM a call and they had them in stock as of last Friday. You will need to order it using the RAM # - 2177-300. The price is $499.

https://www.ramaircraft.com

 

 

There’s been some debate on this as RAM doesn’t have the tsio-360 on the aml for their part.  So talk to your mechanic first.  They told me it was the same part but was only approved for larger engines.

[kortopates]

36 minutes ago, Ragsf15e said:

There’s been some debate on this as RAM doesn’t have the tsio-360 on the aml for their part.  So talk to your mechanic first.  They told me it was the same part but was only approved for larger engines.

It is the same part but they only use it on larger turbo's so didn't see a need to get the TSIO-360's added to their AML.

But this is still the original spot welded version and there is a newer TCM part # here on Mooneyspace, which is more expensive, that is a riveted and isn't subject to the AD. 

Edited April 7 by kortopates

[hubcap]

[hubcap]

23 hours ago, kortopates said:

It is the same part but they only use it on larger turbo's so didn't see a need to get the TSIO-360's added to their AML.

But this is still the original spot welded version and there is a newer TCM part # here on Mooneyspace, which is more expensive, that is a riveted and isn't subject to the AD. 

Where is this riveted version available? And how much does it cost?

[LANCECASPER]

3 hours ago, hubcap said:

Where is this spot welded version available? And how much does it cost?

You definitely want the riveted version. The original reason for the AD is spot-welded ones coming apart.

[hubcap]

2 hours ago, LANCECASPER said:

You definitely want the riveted version. The original reason for the AD is spot-welded ones coming apart.

Unfortunately, it’s a matter of what you can get rather than what you want.
 

Myrtle just came out of annual and my IA told me the clamp would need to be replaced this year. I will take one of these in hand rather than wish for something I have yet to see.

[LANCECASPER]

23 minutes ago, hubcap said:

Unfortunately, it’s a matter of what you can get rather than what you want.
 

Myrtle just came out of annual and my IA told me the clamp would need to be replaced this year. I will take one of these in hand rather than wish for something I have yet to see.

I may have a brand new riveted version. PM me the part number.

[khedrei]

On 4/7/2025 at 10:38 AM, hubcap said:

I came across a comment by a guy on Facebook who said he was able to get the PN - 653332 from RAM. This is the clamp for the M20K 231 with the TSIO-360-LB or GB engine. I believe the clamps that were on when the AD came out will all be timed out of service later this year.
 

I gave RAM a call and they had them in stock as of last Friday. You will need to order it using the RAM # - 2177-300. The price is $499.

https://www.ramaircraft.com

 

 

Not anymore...

I bought two of these in December from Ram and paid $340 each.  A friend needs one and I told him to check on stock before I sell him my spare.  They now want $1300 each.  What a joke.  I think we need to add RAM to a "list".  Not exactly honest business practices.

The FAA should be updating their estimates in the AD.  The entire thing seems like a scam.  Automotive versions of this clamp can be had for $25-50

1300 my a$$

[hubcap]

6 hours ago, khedrei said:

Not anymore...

I bought two of these in December from Ram and paid $340 each.  A friend needs one and I told him to check on stock before I sell him my spare.  They now want $1300 each.  What a joke.  I think we need to add RAM to a "list".  Not exactly honest business practices.

The FAA should be updating their estimates in the AD.  The entire thing seems like a scam.  Automotive versions of this clamp can be had for $25-50

1300 my a$$

I bought two of them for $499 each.They delivered last week.

[kortopates]

The $1300 version could be the newer part # that is riveted versus the original spot welded part #.


Sent from my iPhone using Tapatalk

[khedrei]

8 hours ago, kortopates said:

The $1300 version could be the newer part # that is riveted versus the original spot welded part #.


Sent from my iPhone using Tapatalk

I would have to look into the specifics but my understanding was that it was the same part number and she told him that the price simply "went up"

 

8 hours ago, hubcap said:

I bought two of them for $499 each.They delivered last week.

I believe you, but thats what he told me at the time of my posting.

[Sherifferic]

I purchased the RAM PMA 2177-300 for my TSIO360LB. We attempted to replace the old clamp with this one. It did NOT fit. The groove in the band is too narrow. RAM said they have had similar complaints with the LB engines. That being said, I'm about to return this clamp unless someone wants to give it a shot before I get around to it.

[Dmax]

The Ram clamps are not working. They have asked that they be returned

[Dmax]

https://continental.aero/wp-content/uploads/2025/07/AMOC_AD_2023-09-09.pdf

[PeteMc]

Received another email today:

V-band Coupling AMOC to AD 2023-09-09

Notice Number: NOTC4528

The FAA has approved Continental Aerospace Technologies’ Global alternative method of compliance (AMOC) to Airworthiness Directive (AD) 2023-09-09. This AD addresses an unsafe condition affecting turbocharged, reciprocating engine-powered airplanes and helicopters, as well as turbocharged, reciprocating engines equipped with spot-welded, multi-segmented couplings at the tailpipe to turbocharger exit exhaust.

The AMOC applies to V-band coupling Continental Part Number 653332 installed on certain engine models, as identified in the AMOC. It requires repetitive inspections and removal of the V-band coupling if it fails any inspection. Removal is also required before reaching the time-in-service (TIS) hours defined in the AMOC, 12 years after being placed in service, or by April 15, 2026, whichever occurs first. This AMOC applies only to V-band couplings with known hours TIS. Additional limitations are detailed in the AMOC.For further information, please refer to the full AMOC approval letter at https://continental.aero/wp-content/uploads/2025/07/AMOC_AD_2023-09-09.pdf.FAA Special Programs Section (AFS-830)

Email: safetybriefing@faa.gov

Phone: 202-267-1100

[Fly Boomer]

42 minutes ago, PeteMc said:

V-band Coupling AMOC to AD 2023-09-09

Scroll up 3 inches. 

[Gee Bee Aeroproducts]

There mfg by Marman 

there is a setup fee 

Qty price

Price break on larger qtys 

Someone like Lasar should be stocking and do a group buy to reduce cost .

 

Last year I paid 4500.00 for a die to stamp CP2 titanium for exhaust clamps .

 

[PeteMc]

9 hours ago, Fly Boomer said:

Scroll up 3 inches. 

The PDF/Letter??  Okay... With a quick glace at the letter it looks like the same information to an individual.  But it's not an email from the FAA sent to the masses. 

 

[Fly Boomer]

5 hours ago, PeteMc said:

The PDF/Letter??  Okay... With a quick glace at the letter it looks like the same information to an individual.  But it's not an email from the FAA sent to the masses. 

 

I only meant that the URL posted by DMAX

https://continental.aero/wp-content/uploads/2025/07/AMOC_AD_2023-09-09.pdf

seems to be similar to yours

https://continental.aero/wp-content/uploads/2025/07/AMOC_AD_2023-09-09.pdf.FAA

except that the one you posted has "FAA" appended to the tail end, and when clicked gets "Page Not Found".

[PeteMc]

4 hours ago, Fly Boomer said:

except that the one you posted has "FAA" appended to the tail end, and when clicked gets "Page Not Found".

I guess there is a link in there from the FAA.  But it is the text that I copied out of the email that is what's different.

The first link you wanted me to look at is a letter to an individual.  The email is the FAA making an OFFICIAL anoucement to all involved.  Since it takes a while sometimes for the FAA system to actually get emails out, I figured some people might like to know about the change.

NOTE: I didn't bother reading the letter since the V-Band is not an issue for me anymore.  So if there is some different info in it, then I guess I'm not commenting on whatever it says at all. 

[Fly Boomer]

1 hour ago, PeteMc said:

The first link you wanted me to look at is a letter to an individual.  The email is the FAA making an OFFICIAL anoucement to all involved.  Since it takes a while sometimes for the FAA system to actually get emails out, I figured some people might like to know about the change.

Okay, I see what you mean now.  Sorry for causing confusion.

[hubcap]

On 7/22/2025 at 2:15 PM, Dmax said:

The Ram clamps are not working. They have asked that they be returned

 

On 5/14/2025 at 6:50 PM, Sherifferic said:

I purchased the RAM PMA 2177-300 for my TSIO360LB. We attempted to replace the old clamp with this one. It did NOT fit. The groove in the band is too narrow. RAM said they have had similar complaints with the LB engines. That being said, I'm about to return this clamp unless someone wants to give it a shot before I get around to it.

That is interesting. The clamp I bought from RAM was installed on Myrtle a couple of months ago.

The IA said it was tight but it fit. 

[Ragsf15e]

5 hours ago, PeteMc said:

I guess there is a link in there from the FAA.  But it is the text that I copied out of the email that is what's different.

The first link you wanted me to look at is a letter to an individual.  The email is the FAA making an OFFICIAL anoucement to all involved.  Since it takes a while sometimes for the FAA system to actually get emails out, I figured some people might like to know about the change.

NOTE: I didn't bother reading the letter since the V-Band is not an issue for me anymore.  So if there is some different info in it, then I guess I'm not commenting on whatever it says at all. 

Which clamp did you end up getting?  The RAM one fit yours?

[PeteMc]

26 minutes ago, Ragsf15e said:

Which clamp did you end up getting?  The RAM one fit yours?

I went with the non rivited RAM clamp because it was available.  And I'll probably need a new engine before I have to replace it.   (Clamp needs to be replaced at 2021hrs.)

If I get to the point that the clamp needs to be replaces, I'll seriously be asking how far past TBO do I want to keep going.  A lot will depend upon what, if any, serious issues I have.  Last engine I had a Piston Pin Plug issue right around 1800hrs.  Not a major engine failure, but would have taken a fair amount of time and money to fix right at TBO.  So no point in fixing that and then have something else pricy happen right after that, etc., etc.  So if the engine has no major issues, I'll keep flying it until it starts getting pricy to keep it running.