Oil Catch brand recommendations and mount locations

[rwcstang 201]

Hi all, hope you had a great holiday weekend!

Need some recommendations in oil catch can brands/sizes and what is recommended for my engine (if that matters)

also, I'm curious to where you have yours mounted since there isn't that much room.

Engine: 351/393w stroker

[dmck 3]

I bought mine on e-bay for under $30 Aust.  It is well made , holds 600ml.. oh hell whats that in old English?... approx 1 pint I think.

Easy to assemble and fit... had to make a bracket up to keep it vertical.

I do have one minor problem that I caused myself.  I wasnt paying attention to the assembly details and left out 2 small seals.... and it leaks a little.

MIne is mounted between the battery and the wheel/suspension bulge.  I have removed the dipstick (where all the oil was escaping under pressure) and connected a tube from dipstick to catch can.

[Vicfreg 771]

I never have used a catch can.  Run a PCV valve going to the carb base and a breather with a hose that runs to the air cleaner base.

 

[dream car 12]

On 12/30/2020 at 11:50 PM, dmck said:

MIne is mounted between the battery and the wheel/suspension bulge.  I have removed the dipstick (where all the oil was escaping under pressure) and connected a tube from dipstick to catch can

Just curious Dmck, how much oil do you catch with the oil catch can in a given period, or mileage ?.

 

[dmck 3]

On 1/8/2021 at 12:58 PM, dream car said:

Just curious Dmck, how much oil do you catch with the oil catch can in a given period, or mileage ?.

 

Depends on how I drive.  If Im 'having fun' I can 1/2 fill it in a couple of hundred miles.   I'f I'm careful and sedate (boring!!)... none

 

ITs a 302 with 4 barrel carby.  It seems if I dont open the second set I dont blow oil.

@ Vicfreg.  I have all this stuff on my car and still blow oil.  I've only had the car 15 months and there were other more pressing issues to attend:

• a new radio
• fix the fan speed controller, which lead to
  • stripping the heater box to remove a rats nest- including mummified rats.....
• repair the heater demister controls
• replace the headlights
• rewire the headlights and install relays and fuses (so much wiring under the '69 dash is 'hot' so I added lots of fuses.

 

Now I have  all the major issues addressed I can continue chasing the oil blow-by.  I intend to take it for a long run , 100 miles or so, add some oil detergent  and drain the sump, then remove the sump, looking for anything that may be restricting oil paths.

 I   TOTALLY agree that the crankcase ventilation you describe should eliminate blowby .   Before installing the catch-can I had replaced PCV valve and oil-filler valve , to no noticeable affect.

[Vicfreg 771]

Excessive blow by on a normally aspirated engine is commonly caused by bad piston compression rings.  
 

If you get a chance pull your plugs and check the compression on your cylinders

When you pull the plugs out take a look at which ones may have excessive oil on them  

 

 

[Northernstang 18]

Something else to check for oil consumption is no baffle in the rocker cover where the pcv valve is installed. If there is no baffle the oil splash from the rockers will get sucked into the intake and burned. The blue cloud will follow you.