Help install CATCH CAN - L77 VE SS 6L

[jacks355]

If it was me I would connect all 3, heads and valley, to that can, and connect the can to the intake for some vacuum

The less pressure in the crank case the less change of blowing rear main seals

I'd need a 3 piece y connector to do this into the catch can I guess? I have dash 10 connectors so it should be good enough to connect all 3.

 

[Ginger Beer]

I'd need a 3 piece y connector to do this into the catch can I guess? I have dash 10 connectors so it should be good enough to connect all 3.

2 Y,s

Join both heads, then join headline and valve line into TB

As long as it sees a vacuum your golden

 

[jacks355]

2 Y,s

Join both heads, then join headline and valve line into TB

Ok good idea.

 

[Ginger Beer]

Ok good idea.

I meant valley, not valve

Drinking Dimple and typing with my thumb.........

 

[jacks355]

It seems to be at the front where the small curved hose goes back under from the throttle body. I was only looking at it in the manual tonight

*edit 07 beat me to it by “that much”

Think I know the hose/connection your talking about. I have the valley connector blanked off with a red cap, its in the DOD delete valley plate cover, you'll see in my photo I posted later tonight. Not sure where this connects to cause it wasn't in the std valley plate cover before I removed the DOD system.

 

[jacks355]

I meant valley, not valve

Drinking Dimple and typing with my thumb.........

I knew what you meant even after ive had a few beers!

 

[jacks355]

I'd need a 3 piece y connector to do this into the catch can I guess? I have dash 10 connectors so it should be good enough to connect all 3.

 

[jacks355]

If it was me I would connect all 3, heads and valley, to that can, and connect the can to the intake for some vacuum

The less pressure in the crank case the less change of blowing rear main seals

Hey Ginger Beer, so I hooked up the catch can using the 2 y's. Started the car with the oil filler cap off and there is heaps of vacuum when I put my hand over the engine oil filler hole. Felt like there was way too much vacuum and not sure if that's normal or not?

This is the setup I have:

1. The both rocker covers and valley plate vent is going into the catch can.
2. The catch can outlet is going into the Throttle body.

Result is, with oil filler cap off there seems to be lots of vacuum that sucks my hand onto the oil filler - is this normal or not?
Does anyone know if the Gen4 LS has a PCV system and how it works?

 

[Ginger Beer]

You will be fine, dry sumps creates "alot" more vacuum with their scavenger pumps and they dont have issues, apart from making a little more power

https://www.enginebuildermag.com/2012/11/dry-sump-oiling-systems/

For a test disconnect the rear hose, i.e. go back to OEM style, and see if there is a difference.

Test and adjust, vacuum good, pressure bad

You should have a PCV valve on the return to the intake, it flows freely from the crankcase to the intake, the valve stops pressure from the intake going back down the lines to the crankcase

 

[jacks355]

You will be fine, dry sumps creates "alot" more vacuum with their scavenger pumps and they dont have issues, apart from making a little more power

https://www.enginebuildermag.com/2012/11/dry-sump-oiling-systems/

For a test disconnect the rear hose, i.e. go back to OEM style, and see if there is a difference.

Test and adjust, vacuum good, pressure bad

Yeah, I'll reroute to standard and see if vacuum is the same.