KrashDH
Top Post Dawg
A while back, I decided I wanted to install a catch can. Here's my post install from that:
forums.tdiclub.com
Well, since then I had upgraded to the larger H8 battery, so my nifty bracket couldn't work the way it was in the photo above (tucked behind the battery "walls") so I had to modify it. Without the walls available, I ended up using some super adhesive zip tie brackets on the side of the battery at the top and bottom, then utilized the ties to hold the bracket to the battery. It worked for a while. I was under the hood the other day and noticed that the adhesive had lost it's grab, so the bracket and can were kind of just resting on the coolant hose. No bueno.
So I had to come up with a different solution for mounting, so I figured I'd post up. If you have a stock battery, you could mount it the original way I had it in the link above and be done with it. But if you ever decide to do the battery mod, some of them will be large enough the walls and top mount for the fuses won't fit.
First off, I had a couple of requests (@NewTdi) to know how much oil the catch can actually would catch.
Original post/install was June 19, 2020
When I re-did the setup yesterday, 8/20/21:
Maybe a tablespoon or so over the course of that time, not much at all.
So here's the new setup. I figured I would utilize brackets sliding UNDER the battery, and use the weight of the battery and the battery clamp hold down to my advantage.
A couple of angle brackets (Lowes) with the legs cut to size, drilled through (M6 button head cap screw), with an actual tank mounting bracket spanning and bolted to the brackets. Gives the brackets more rigidity too.
Here's the bracket I used:
Mounted in it's new home:
Top down view:
Hoses attached (had to cut a new hose because the length on the old one didn't quite work, and my old fitting didn't want to come out of the other one, although I could have sliced it with a blade):
I did something a bit different with the hoses this time too. Since the bottom one kind of rests on the valve cover, the top one would sag onto it, which put a bit of strain on the fitting into the grommet (where the puck normally goes). I think over time that led to the grommet actually cracking. So I had some leftover air line, and cut it to the length where it took the stress off the grommet. Hold it all with a zip tie. Old trick I learned for keeping mtb hoses spaced apart:
Finally, the system all plumbed in:
Just wanted to give an update if anyone found themselves with the H8 battery and needed a mounting solution
Fitting an oil catch can to Golf Mk4 (ATD)
I just ordered my can and some worm clamps. I have the hose in my garage, a heat gun to heat it up, I'll make up a bracket for the battery slot. Going to just connect the CCV puck to the can, can back into the intake. Seems pretty easy to me. Will rid myself of that garbage connection at the...
Well, since then I had upgraded to the larger H8 battery, so my nifty bracket couldn't work the way it was in the photo above (tucked behind the battery "walls") so I had to modify it. Without the walls available, I ended up using some super adhesive zip tie brackets on the side of the battery at the top and bottom, then utilized the ties to hold the bracket to the battery. It worked for a while. I was under the hood the other day and noticed that the adhesive had lost it's grab, so the bracket and can were kind of just resting on the coolant hose. No bueno.
So I had to come up with a different solution for mounting, so I figured I'd post up. If you have a stock battery, you could mount it the original way I had it in the link above and be done with it. But if you ever decide to do the battery mod, some of them will be large enough the walls and top mount for the fuses won't fit.
First off, I had a couple of requests (@NewTdi) to know how much oil the catch can actually would catch.
Original post/install was June 19, 2020
When I re-did the setup yesterday, 8/20/21:
Maybe a tablespoon or so over the course of that time, not much at all.
So here's the new setup. I figured I would utilize brackets sliding UNDER the battery, and use the weight of the battery and the battery clamp hold down to my advantage.
A couple of angle brackets (Lowes) with the legs cut to size, drilled through (M6 button head cap screw), with an actual tank mounting bracket spanning and bolted to the brackets. Gives the brackets more rigidity too.
Here's the bracket I used:
Mounted in it's new home:
Top down view:
Hoses attached (had to cut a new hose because the length on the old one didn't quite work, and my old fitting didn't want to come out of the other one, although I could have sliced it with a blade):
I did something a bit different with the hoses this time too. Since the bottom one kind of rests on the valve cover, the top one would sag onto it, which put a bit of strain on the fitting into the grommet (where the puck normally goes). I think over time that led to the grommet actually cracking. So I had some leftover air line, and cut it to the length where it took the stress off the grommet. Hold it all with a zip tie. Old trick I learned for keeping mtb hoses spaced apart:
Finally, the system all plumbed in:
Just wanted to give an update if anyone found themselves with the H8 battery and needed a mounting solution
Last edited:
