Rear axle vent catch can?

[Shotokan1509]

Didn't the KR come with an axle catchcan?

Edit: Here's one from Shelby
http://www.shelbystore.com/product-p/8r3v-4022-kr.htm

 

[fdjizm]

...and done!

lol

 

[Marc s]

After a 20 minute track session before I had the catch can, gear oil would drip out of the axle vent and leave a 6" diameter puddle.

 

[Chris B.]

I have a few friends that work for aftermarket parts companies. I wonder if any of them would be willing to make something easy to install and for a reasonable price? I'll ask around.

 

[Ch4r1ie]

I have a few friends that work for aftermarket parts companies. I wonder if any of them would be willing to make something easy to install and for a reasonable price? I'll ask around.

 

[doogie]

Didn't the KR come with an axle catchcan?

Edit: Here's one from Shelby
http://www.shelbystore.com/product-p/8r3v-4022-kr.htm

Yep, but if you look at the listing it states they are only available for warranty purchases by KR owners.

 

[corruptor]

I have a few friends that work for aftermarket parts companies. I wonder if any of them would be willing to make something easy to install and for a reasonable price? I'll ask around.

That would be awesome. I asked Joe Heck Racing to produce some for us a couple weeks ago since they mentioned they fabricated a one-off part for their test car, but I never heard back.

 

[darkstar november]

This must only happen during long track sessions, right? I've never noticed this while autocrossing.

i get it from autox events

 

[Stangmeister9]

i actually had the TSB done by my local dealership for free! worked well, still had a tiny bit of spillage.

 

[DPE]

Yeah, the TSB/turkey baster/sex toy/booger sucker thing from Ford, I conclude, doesn't really work. I had leakage (from the axle) on my first track day in the car, so I installed said device. After installing Konis and taking a few laps through local roundabouts a few nights ago for testing purposes, I once again have an oily mess.

Question for those with a catch can setup of sorts; do you clamp the hose to the little metal vent somehow? Or do you get a hose barb deal that screws in instead (replacing the vent)? Just curious. Need to do something. Rumor also has it that the Boss/GT500 diff cover M-4033-K has a vent up at the top, thus allowing you to plug the vent on the axle and the new vent won't leak since it's up on top where the fluid typically isn't. Probably go that route eventually, but I may need something near term that's cheap and easy.

Phil
2010 GT

 

[fdjizm]

i actually had the TSB done by my local dealership for free! worked well, still had a tiny bit of spillage.

Yeah, the TSB/turkey baster/sex toy/booger sucker thing from Ford, I conclude, doesn't really work. I had leakage (from the axle) on my first track day in the car, so I installed said device. After installing Konis and taking a few laps through local roundabouts a few nights ago for testing purposes, I once again have an oily mess.

Question for those with a catch can setup of sorts; do you clamp the hose to the little metal vent somehow? Or do you get a hose barb deal that screws in instead (replacing the vent)? Just curious. Need to do something. Rumor also has it that the Boss/GT500 diff cover M-4033-K has a vent up at the top, thus allowing you to plug the vent on the axle and the new vent won't leak since it's up on top where the fluid typically isn't. Probably go that route eventually, but I may need something near term that's cheap and easy.

Phil
2010 GT

Put a zip tie around the bottom that goes onto the fitting.

 

[DPE]

Pardon me for being a bit dense here, but I guess the questions are:

1. Do I leave the oem spring valve thing on the axle?
1A. If yes, what ID hose would a person clamp to it, and would they clamp on the hex part of the valve (seems like that would leak), the spring cap deal, or down lower on the flange coming off the axle? Would it matter if the spring motion was restricted?
1B. If no, what do I screw into the axle to mount the hose on, and can I then ignore the valve entirely?

Sorry for being a little slow on this subject; I've put on catch cans for turbo engines and such, but this is my first rear diff catch can .

Phil
2010 GT

 

[Philostang]

I don't think you're being dense Phil; sometimes it's a simple detail of the procedure that slips us up. Besides, I have the same (dense) question. =)

From the looks of the Shelby catch can (see link above) and the instructions (download from the Shelby site), you remove the entire cap and fitting into the axle. The instructions say you should then "Replace the BREATHER VALVE (PLUG) with the provided silver fitting (9/16”) and tighten until rubber o-ring is flush to rear end axle tube assembly. Apply RED lock tight to the threads"

So in the picture on the linked site, the little silver fitting replaces the OEM plug, then from there the 90 deg. brass fitting has a barbed end that receives the rubber tube. With a longer tube you could pass it into the trunk or mount it somewhere that doesn't require loosening the 3rd-link bracket and fuel tank strap (which to me seems like an unnecessarily complicated way to go about mounting the catch can).

I'd love to see a simple and clear picture of exactly what gets removed from the axle (the "plug") and what thread size it is, so I can get something from a hardware store and do it in one sitting.

Best,
-j

 

[fdjizm]

You need a nipple, forgot what size I will find out.

 

[DusterRT]

I turned my old breather in to a nipple..after being black flagged off course for making a smoke screen on left turns, I improvised by popping the metal cap off, removing the spring/diaphragm and sticking some hose on it with a small clamp and looping it up over the gas tank. Still got a little fluid dripping out of the end, but worked well enough the rest of the day.

When I got back I installed an actual catch can in the trunk and ground down what was left of the original vent as you see below to make the hose a little more secure (it's pretty well square as-is). Been holding fine for almost 2 years, just make sure you use hose that's compatible with oils..I'm pretty sure I used fuel line.

 

[DPE]

Ah, that's better. Thanks for the info and for the pic Duster. I figure I'll do the gatorade bottle mounted under the car method for now, and eventually I'll get the Boss/GT500 diff cover and plug the hole on the axle and be done with it.

From the link, it looks like in an optimal world your catch can setup will return the fluid back to the axle; anyone actually set up for that, or is everyone just emptying the bottle on occasion and topping off the diff every so often? Just curious. Also, to save me 30 seconds or so at the parts store, what is the ID of the hose that'll clamp on to the modified OEM vent?

Philostang, here's a pic of the OEM vent; this is what is removed from the axle, and in the case of duster he took it apart to make his hose fitting. I believe it's a 13mm hex to remove it, but I don't know the thread pitch. I'll figure that out one day though, given I'll need a plug. And hey, at least we can be dense together .

http://www.latemodelrestoration.com/Product/Images/M4033K?default=LRS-4022A_4509.jpg



Thanks again. Great info!

Phil
2010 GT

 

[DusterRT]

Here's mine. Between the length of the hose and the diameter (not sure, but 5/16" comes to mind), it seems to be sufficient to contain the diff fluid, as I've never gotten a drop out of the catch can itself (so in other words, overkill). I put it here as I wasn't happy with any of my options under the car. I did this just before the KR catch can came out, which I like better, but my setup was less than half of the KR cost even with the blingy can. The top nipple I just ran the hose in a rubber plug so it vents inside the frame rail rather than in the trunk.

 

[DPE]

Just an FYI that applies to this thread, I went to my local Ford dealer who has both a Boss and a 2011 GT500 in stock. I crawled under both with a flashlight, which aroused some suspicion, but ultimately no one seemed to care all that much. What I found was the nice aluminum diff cover, the little metal spring vent up on top of it, and a hex-head bolt serving as a plug in the spot on the axle where the spring vent used to go. This was true on both the Boss and the GT500.

Parts man could not figure out the part number for said plug, and his schematics still just showed the metal spring vent, but in time I'm sure it'll make it into their system. Point being, I think that's the permanent fix I've been looking for (Boss/GT500 aluminum diff cover with vent up top and plug the hole for the vent on the axle, rather than a catch can), and it should keep the diff a little cooler as well. Now I've got a winter project. . .

 

[FR500GT]

I don't think the losses are significant, but keeping oil off the track surface is always a good idea.

+1000

 

[cop on my back]

This is going to be my next project. I ran an oval track one day just for fun and it caused a real mess. Now the same, not as bad, after a road course event.