Thread: Catch can chemical compatibility
08-04-2013, 04:28 PM #1
Catch can chemical compatibility
I was all ready to assemble a homemade catch can from PVC and then read a thread where someone's can disintegrated. So I checked chemical compatibility of PVC with gasoline and it is not recommended. Anyone have issues with a PVC catch can falling apart on them? I want to do it once and forget about it... except for emptying it
08-04-2013, 05:48 PM #2
nope,have them on both my skis for 4 years now and no issues...
08-04-2013, 06:16 PM #3
08-04-2013, 09:41 PM #4
- Join Date
- Nov 2011
no problems here either
08-05-2013, 03:54 PM #5
Now I need to figure out some kind of mounting bracket. Probably should use 2 points on the engine. Any thoughts how to mount it?
08-06-2013, 10:33 AM #6
I have used the PVC home depot catch can for 2 years now with no issues, I recently built one from an aluminum bottle that I have tested with good results,
the key is to get it mounted were it does not bang around and leak, but you need to be able to get to it to drain it,
I went with a slotted aluminum bracket I made, so I can loosen the nut, pull the catch can up and drain it,
08-07-2013, 12:00 AM #7
Thanks for that info and the bracket idea. like the bud can too...
After buying all the PVC and fittings for the catch can.... I stumbled on this idea...
It's made of polypropylene so the compatibility is High with motor oils and Fair with unleaded gas. Interesting compatibility is High with leaded gas. A gas/oil mixture might be higher in the compatibility than straight unleaded...dunno.
3/4" pipe thread on each end, comes with a screen inside and a drain cap on the bottom. O-ring sealed in the middle. Since a home water system is usually regulated about 40PSI, it should stand up to the pressures it might encounter in the vent line.
Starting with galvanized pipe fittings, but a threaded copper fitting could work if the end is flared to keep the hose from slipping falling off instead of the barbed fittings. Plan to run a hose back to a fitting in the kanaflex like the OEM setup.
08-07-2013, 09:01 AM #8
OR just run a breather and no catch can
08-07-2013, 10:40 PM #9
I thought the reason for the catch can is to keep the crankcase gas/oil out of the intake. Is there something i'm missing?
08-08-2013, 03:14 PM #10
you need a breather filter for the gasses to escape the can, the fumes contain oil and gas particles wich condense back to liguid,
after a day of hard riding I have to drain about an ounce of a gas/oily blow by mix,
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