Keep your intake clean! Ford Fiesta ST Oil Catch Can R&D by Mishimoto

[westcoaST]

I was thinking adding a gusset would also help relieve the stress along the axis and add strength.

Sometimes stiffer isn't always better, especially when fatigue is involved. You have a weight at the end of a cantilever moving up and down against its supports in bending fatigue. Placing a stop around the can to prevent angular rotation would probably do more to prevent fatigue than welding a gusset on the mounting tab. Increasing the radius of the clip and moving it away from the engine mount will go a long way in reducing stress intensity.

All in all, I like the universal Mishi kit mounted to the strut tower. This has a very beefy bracket and very little vibration. One screw and its off the tower, unscrew the can and dump it out.

 

[mercdank]

Sometimes stiffer isn't always better, especially when fatigue is involved. You have a weight at the end of a cantilever moving up and down against its supports in bending fatigue. Placing a stop around the can to prevent angular rotation would probably do more to prevent fatigue than welding a gusset on the mounting tab. Increasing the radius of the clip and moving it away from the engine mount will go a long way in reducing stress intensity.

All in all, I like the universal Mishi kit mounted to the strut tower. This has a very beefy bracket and very little vibration. One screw and its off the tower, unscrew the can and dump it out.

Do you happen to have pictures of the mishi can mounted to the strut tower?

 

[FatGuyInALittleCar]

Wow wtf.
I still haven't installed mine as I don't have a draining solution yet. I'm debating just selling it to be honest. Your thread has now definitly made me lean that way.

I just popped out the headlight. Easy peasy. My mount looks good so far. Something just less that a teaspoon of liquid in the can in about 1,100 miles all city.
So far, I'm a happy customer. If there's a mount update, Mishi will take care of us. Right, Mishi?

 

[mishimoto1]

I have no doubt your can itself works well. I've used your other cans before. I just was hoping for the plug and play easy accessibility and Mishi quality I expected. So far 1 for 3.

Based on this photo, it looks like the outside radius of the bend is contacting the passenger side engine mount. This would tend to transfer vibrational stresses into the OCC mount. Slotting the holes that attach to the engine mount, and pushing the mount away from the corner shown as burnished in the photograph should eliminate the fatigue loading that appears to be responsible for the failure. A photograph of the fracture face would be helpful to tell if this is a fatigue failure. Perhaps even pushing the mount away from the corner, without slotting the holes would be enough to prevent failure.

I was thinking adding a gusset would also help relieve the stress along the axis and add strength.

Sometimes stiffer isn't always better, especially when fatigue is involved. You have a weight at the end of a cantilever moving up and down against its supports in bending fatigue. Placing a stop around the can to prevent angular rotation would probably do more to prevent fatigue than welding a gusset on the mounting tab. Increasing the radius of the clip and moving it away from the engine mount will go a long way in reducing stress intensity.

All in all, I like the universal Mishi kit mounted to the strut tower. This has a very beefy bracket and very little vibration. One screw and its off the tower, unscrew the can and dump it out.

I just popped out the headlight. Easy peasy. My mount looks good so far. Something just less that a teaspoon of liquid in the can in about 1,100 miles all city.
So far, I'm a happy customer. If there's a mount update, Mishi will take care of us. Right, Mishi?

We appreciate your understanding and involvement in helping us find a solution. Although it is not unusual for there to be one failure that slipped through our quality control and we don't anticipate additional failures, we are committed to provide you with a flawless product. Our engineers are currently working on an improved design and a permanent solution to this. We strive for a 0% failure rate so we are working quickly and thoroughly to find a solution. I will keep you all posted with details on this shortly.
Thank you for your patience!
-Sara

 

[haste]

This is one reason I am concerned about their oil cooler. When watching the install video you can see the flex their brackets have during installation and I can only imagine the stresses that are put on it during daily driving. It seems I have been assured in that thread the brackets will not be a problem, but I am not completely satisfied until more buyers chime in.

 

[westcoaST]

Do you happen to have pictures of the mishi can mounted to the strut tower?

Check out my build thread. Here is an image.

 

[mishimoto1]

This is one reason I am concerned about their oil cooler. When watching the install video you can see the flex their brackets have during installation and I can only imagine the stresses that are put on it during daily driving. It seems I have been assured in that thread the brackets will not be a problem, but I am not completely satisfied until more buyers chime in.

Hi there!
While I understand your concerns, the oil cooler mount location is a bit different from where our catch can mounts to. The main reason that our catch can bracket for the Fiesta ST may be more prone to failure is that it is mounted to the engine itself. This would subject the mount to more stress from engine vibrations than our other mounts would see. Our direct fit oil cooler mounts to the beam in front of the radiator which will see much less stress than a mount directly to the motor. We have not seen any other brackets from our direct fit kits fail like this one has for the catch can.

Although we feel that this one catch can mount failure is an isolated incident, we are still working on a separate mounting bracket (leaving the catch can in the same location) that does not mount to the engine. This will solve any issues related to stress failure of these mounts going forward. I will post some more details on this mount later today.

Thank you very much for your patience!
-Sara

 

[mercdank]

I've received my new bracket from Mishimoto and will post pics of the new install later today. Here's a close up of the fracture face for any metallurgical experts.

 

[westcoaST]

I've received my new bracket from Mishimoto and will post pics of the new install later today. Here's a close up of the fracture face for any metallurgical experts.

It looks like there are two initiation sites, both start at the lower edge of the fracture. Both sites appear to have propagated through fatigue. There are features on the fracture face that look like thumbnails, and they are typically referred to as thumbnails. They provide information about the initiation site (center of the thumbnail) and direction (away from the thumbnail). I normally look at these types of failures using a 30X binocular microscope, then sometimes on a scanning electron microscope, to determine spacing of the fatigue striations. The spacing will tell you whether you have high or low cycle fatigue. The bottom side of the fracture would normally be photographed to see if any burnishing is located at the two initiation sites.

It is great that Mishi is replacing your bracket. Great customer support.

 

[mishimoto1]

I've received my new bracket from Mishimoto and will post pics of the new install later today. Here's a close up of the fracture face for any metallurgical experts.

Glad that you received your replacement bracket!

It looks like there are two initiation sites, both start at the lower edge of the fracture. Both sites appear to have propagated through fatigue. There are features on the fracture face that look like thumbnails, and they are typically referred to as thumbnails. They provide information about the initiation site (center of the thumbnail) and direction (away from the thumbnail). I normally look at these types of failures using a 30X binocular microscope, then sometimes on a scanning electron microscope, to determine spacing of the fatigue striations. The spacing will tell you whether you have high or low cycle fatigue. The bottom side of the fracture would normally be photographed to see if any burnishing is located at the two initiation sites.

It is great that Mishi is replacing your bracket. Great customer support.

Thank you for the kind words! We are still working on a more permanent solution for the mounting location and should have more information on this shortly.
-Sara

 

[mercdank]

Got everything back together.

Removal of broken bracket

Mishi can with UPR check valve and home-brew drain hose

All set!

Close up of check valve

Close up of drain hose location

 

[mishimoto1]

Update!

As you know we’ve recently seen one failure of our Fiesta ST catch can bracket. While some failures are bound to happen, we are not willing to accept a single failure with our products. Although we do not expect additional failures with this mount, we are not taking any chances. Our engineers decided to design a bracket that leaves the catch can in its current location while relocating the mount to the body instead of the engine. This will relieve the bracket of a large amount of stress placed on it from engine vibrations. Take a look at the new bracket location and design.

Updated Fiesta ST catch can bracket

Updated Fiesta ST catch can bracket

Updated Fiesta ST catch can bracket installed

Updated Fiesta ST catch can bracket installed

Updated Fiesta ST catch can bracket installed

Updated Fiesta ST catch can bracket

Updated Fiesta ST catch can bracket installed

This bracket design will require removing the headlight to install, but it will not alter any other part of this kit. Moving forward, this improved design will replace the previous design which is more prone to failure. We will make sure to keep you all updated throughout this process, and we appreciate your hanging in there while we fabricate a solution.

Thank you!
-Sara

 

[mercdank]

Awesome! You already have my address so you can send me one! ;-)

 

[koozy]

My concern with this kit is the location of the oil catch can. It's too close to the accessory drive belt. In the event of a front end collision the can has a greater possibility of coming into contact with the drive belt, not only cause potential damage to the drive belt system and engine, but the oil in the can may catch fire if the drive belt rubs a punctured can and ignites the fuel and oil combo. Did Mishimoto engineers consider possible accident scenarios? Cans mounted in back don't pose as much a threat IMO.

 

[golfhack]

Just an FYI, the headlight is stupid easy and quick to remove. I recently emptied mine for the first time and was surprised how easy it was. Thank Mishimoto for taking care of this. Looking foward to the radiator before summer!

 

[mishimoto1]

Awesome! You already have my address so you can send me one! ;-)

My concern with this kit is the location of the oil catch can. It's too close to the accessory drive belt. In the event of a front end collision the can has a greater possibility of coming into contact with the drive belt, not only cause potential damage to the drive belt system and engine, but the oil in the can may catch fire if the drive belt rubs a punctured can and ignites the fuel and oil combo. Did Mishimoto engineers consider possible accident scenarios? Cans mounted in back don't pose as much a threat IMO.

Just an FYI, the headlight is stupid easy and quick to remove. I recently emptied mine for the first time and was surprised how easy it was. Thank Mishimoto for taking care of this. Looking foward to the radiator before summer!

Thanks for the kind words! The catch can still sits in the original location with the new bracket installed. Although it may seem that it sits close to the drive belt, it will not make contact with the drive belt during normal operation. Unfortunately there is not a lot of real estate to work with on these cars. We did not locate the catch can in the back of the motor for various reasons. The main reason being that it would be more difficult for the oil to separate from the air near the back of the motor because of the amount of heat that the catch can would see. It is better to locate the catch can in a cooler location for optimal oil separation from the air.
We appreciate your feedback!
-Sara

 

[FatGuyInALittleCar]

Keep your intake clean! Ford Fiesta ST Oil Catch Can R&D by Mishimoto

My concern with this kit is the location of the oil catch can. It's too close to the accessory drive belt. In the event of a front end collision the can has a greater possibility of coming into contact with the drive belt, not only cause potential damage to the drive belt system and engine, but the oil in the can may catch fire if the drive belt rubs a punctured can and ignites the fuel and oil combo. Did Mishimoto engineers consider possible accident scenarios? Cans mounted in back don't pose as much a threat IMO.

Even if a user doesn't empty the can for 3 or 4 thousand miles, there won't be more than a couple teaspoons of liquid in the can. Much of that will be water condensate. I tried, for shits and giggles to light both the vapors and the fluid when I emptied my can... No dice with direct flame.
Short answer, based on my test, scientific as it wasn't, this thing does not introduce any additional danger to an accident scenario.
Will it crush in such a way as to do damage? Who knows? Does modifying your car require certain risk of the unknown? Yep.

Sara, I missed it... Are you automatically sending revised brackets to those of us that bought V1.1?

 

[koozy]

Even if a user doesn't empty the can for 3 or 4 thousand miles, there won't be more than a couple teaspoons of liquid in the can. Much of that will be water condensate. I tried, for shits and giggles to light both the vapors and the fluid when I emptied my can... No dice with direct flame.
Short answer, based on my test, scientific as it wasn't, this thing does not introduce any additional danger to an accident scenario.
Will it crush in such a way as to do damage? Who knows? Does modifying your car require certain risk of the unknown? Yep.

Sara, I missed it... Are you automatically sending revised brackets to those of us that bought V1.1?

I still wouldn't want the possibility of the can hitting the belt drive system, it's not worth the trouble for me. Not much is being collected by some accounts so not worth it for me again. I prefer no can anyways whether mounted in front or in back.

 

[aborbs87]

I still wouldn't want the possibility of the can hitting the belt drive system, it's not worth the trouble for me. Not much is being collected by some accounts so not worth it for me again. I prefer no can anyways whether mounted in front or in back.

If you don't even want one why do you keep posting garbage?

 

[koozy]

If you don't even want one why do you keep posting garbage?

garbage to you, treasure to others