I thought about trying this, but ruled it out because of the way the can collapses. Worried about it getting shredded inside and silicone get into the SC. Chain would be best solution I think. hope this helps

 

So the Alta CC isn't made of metal (Al)? I would have thought it was. I guess I'll need to consider the M7 CC. I do like the bling factor (color choices) of the Alta though.

 

Alta is Silicone with metal ends

 

yup, they are considering sending me a new can body (silicone tube). Due to the vacuum, the insides of the silicone can is falling apart from bending.
The Alta has not even been on there for a year yet. Thinking of getting m7's now.

 

When we started looking into making a catch can system we were told by our hose suppliers that oil and silicone do not play well together. The oil will start to penetrate the silicone hose and actually change the color as well as cause the material to break down. This is the reason for the aluminum can as well as non silicone hoses in our system.

Randy

Team M7
www.m7tuning.com

 

Randy, your exactly right about that. The tubing sweats oil even.

 

I've been wondering when someone was going to catch on that silicone and oil aren't compatable.
Unless you use Fluoro-Silicone.
Fluoro-Silicone has properties that allow it to withstand extreme temperatures and pressures and will not break down in contact with engine oil.
Or use Fuel, Oil, Emissions, Hose it doesn't look as trick but it is made for the job.
Has anyone dug up the old posts here on oil catch cans?

Note: Silicone hose is NOT compatible with fuel or oil.

 

to sum up then:

it would seem that silicone is the wrong material due to oil reaction problems and collapsibility under vacuum;
the catch can should be sucked on by the blower intake tube and fed only from the PCV valve;
a stainless steel scrubby or chain should be inside to collect condensation;
one opinion is the can should be mounted low, so spooge collecting in the hose drains into the can rather than back where it came from.

the aluminum can from e-bay for $40 and a $0.65 scrub pad work pretty well;
What is special about the 3x more expensive M7 can?
the alta instructions to Tee into the crank vent and dump into the intake plugging the blower tube, seem at odds, as well as the collapsible silicone construction.

 

jlm, do you have any pics of your install? I have seen the "m7" can on eBay and was interested in seeing it installed. Thanks.

 

There is more some where but if interested this will provide some reading on the subject.
Is this cyclic???? check out the date

https://www.northamericanmotoring.co...ad.php?t=15183

Build your own;
http://www.allpar.com/fix/pcv-breather.html

https://www.northamericanmotoring.co...ad.php?t=21971

DIY oil catch can + older posts

 

a couple of pics; i just popped the can into the cowl well and used a foam bit to tuck it in. My opinion is higher is better so the hose can drain back into the head. I still have it hooked up the "alta way", but will change that soon enough.

 

Nice Setup John... I removed my alta, because all it did was catch water, then start to leak because the bleeder tube / level tube wore away. What type of hose are you using?

 

Thanks jlm!

 

I don't have a catch can on my S, but one of the reasons for water in the can could be condensation, especially if you route a hose to the ambient side of the throttle body.

Your catch can gets warm from the oil that goes into it as well as the warm gases passing through. As it cools down it will draw air from the ambient side of the system into the can and any water vapor in the air cools down as well
The catch can never gets hot enough to boil the condensation off, so it just keeps collecting and collecting. If it is on the engince side only, you get very little water vapor ingested, mostly oil and other solvent type vapors, thus no to little water collection in a can on the down side of the throttle body.

Seems to make sense to me, from a purely heat transfer/fluid flow point of view. Of course, I could be full of vapor myself . . .

 

Considering the cost of some of those aftermarket catch cans, maybe it would be a better idea just to roll up some dollar bills and jam them in the breather lines. You could just throw them away or burn them when they get all gunked up.

 

mine is worth about five visits to Gino's.


the hoses provided with the ccan are tygon tubing with an internal nylon webbing; I also used a neoprene hose rated for hot oil.

 

I have a Perrin that I picked up from Ebay. This is the same company that make Alta's. I've been collecting oil well. All I did was connect my catch can inline of the PVC valve and the supercharger. I called Alta and they said that if I wanted to keep the stock config but wanted to add the catch can, the best place was how I ended up doing.

Here is pic.

 

Right-Ooooo!

This is consistent with the other makes out there. Nice shot BTW.

 

Arly, where does the hose go that's running under the intercooler? Are you hooked into both crankcase vents or just the one on the left?

The one on the left is the partial throttle vent that normally just vents down under the intercooler while the one on the right is a full throttle vent that goes into the intake.

 

I just ran it to the tube that goes to the supercharger. I am planning on getting a smaller can for the intake side. A guy on ebay sells one for $11. This setup will catch oil from both sides.

 

Jlm...how did this go? I did the same and replaced the silicone tubes with transmission hoses and filled the condenser with copper scrub pads. However, while idling, I noticed the Alta silicone container was collapsed due to the vacume Now I need to find a piece of metal tubing to fit inside and reinforce the condenser. Makes me wonder if it's blown up like a ballon while under boost

 

Arly, can you post the ebay link? Thanks

 

fit,

here is the ebay link.

http://cgi.ebay.com/ebaymotors/ws/eB...936818212&rd=1

 

$11.99 for the catch can.
$11.99 for shipping.
$23.98 delivered to your door.

a bit more than $12

 

sorry,

I forgot to mention the shipping. I have been looking at this item for a while and wondered if this would work.