416velle
10-08-2023, 06:52 PM
Howdy all. Question about oil catch cans. For background, a long time I'd been under the impression that "typically" high compression engines and forced-induction engines "need" catch cans.
The prior 6.0 I ran in my chevelle, I had the rings gapped for boost that it never got, on some forged pistons in a non-overbored 230K mile block. That thing needed a catch can (because it breathed like Lizzo trying the boston marathon) and had 12:1 compression, so that "solidified" my opinion.
Well now I have a 416LS3, 13-1/4:1 compression and makes 550-580hp at the tire, the rings are gapped tightly as it will NEVER see boost, and built a catch can. I have about 1200miles on the thing and when i cracked the drain plug to empty it, nothing came out. It was bone dry.
Is that an indication that a catch can is unnecessary?
My initial thought is if I get rid of it, I'd route the hoses to the intake tube before the throttle body so that it doesn't affect tuning much (if at all), and enough air is flowing through it at RPM for the venturi effect to evacuate the crankcase.
I don't really want a hose that goes to one of the ports on the intake but if I have to then I will.
The prior 6.0 I ran in my chevelle, I had the rings gapped for boost that it never got, on some forged pistons in a non-overbored 230K mile block. That thing needed a catch can (because it breathed like Lizzo trying the boston marathon) and had 12:1 compression, so that "solidified" my opinion.
Well now I have a 416LS3, 13-1/4:1 compression and makes 550-580hp at the tire, the rings are gapped tightly as it will NEVER see boost, and built a catch can. I have about 1200miles on the thing and when i cracked the drain plug to empty it, nothing came out. It was bone dry.
Is that an indication that a catch can is unnecessary?
My initial thought is if I get rid of it, I'd route the hoses to the intake tube before the throttle body so that it doesn't affect tuning much (if at all), and enough air is flowing through it at RPM for the venturi effect to evacuate the crankcase.
I don't really want a hose that goes to one of the ports on the intake but if I have to then I will.