Variation of oil catch can (1990) - ZR-1 Net Registry Forums

Corvette95 · 07-20-2020

I finished the 90. I mean finished . Down to wiping the engine down and air intake , all the little parts... DONE! Pardon me but it turned out GREAT and beautiful as only an LT5 can. Now the bad news. Oil drips after dry for 3 weeks from the valley . Good Lord. Pulled everything back apart. IH was dry, valley was wet, pvc pipes to pcv box was dry. PVC box toque was still proper, new gaskets. That?s the only thing? Car hasn?t been driven , only about 30-45 minutes idle time. (Actually a few drips out of stock headers converts too-few drips) could. It find definitive cause. Replace pvc box with new gasket. I am using Jerrys new pcv hoses and dual adapter (this is In me that I noticed later, I zip ties the duel pcv valves to the line like the Oe was, I may have pulled the tie too tight block flow through that line , just a guess , doing it different this time. Which brings me to oil catch can. I am taking a parts air bleed tube and cutting it at the rear of plenum and cutting the other side to go into the pcv dual hose and route the new pcv wires to my small micro can to right of brake booster. Any obvious problems with this plan??? Waiting on new plenum gaskets and oil catch can to arrive tomorrow.

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Karl · 07-20-2020

You do not need to cut the line. I used a 3/8" male NPT adapter from home depot (two of them) one in by the throttle body and the other at the pcv/map outlet. I used this with stainless steel braided line.

Corvette95 · 07-20-2020

Thanks, my thinking was to make a small as possible deviation from stock appearance.

07-20-2020	#1
Corvette95 Join Date: Jan 2006 Location: Decatur, AL Posts: 1,107	Variation of oil catch can (1990) I finished the 90. I mean finished . Down to wiping the engine down and air intake , all the little parts... DONE! Pardon me but it turned out GREAT and beautiful as only an LT5 can. Now the bad news. Oil drips after dry for 3 weeks from the valley . Good Lord. Pulled everything back apart. IH was dry, valley was wet, pvc pipes to pcv box was dry. PVC box toque was still proper, new gaskets. That?s the only thing? Car hasn?t been driven , only about 30-45 minutes idle time. (Actually a few drips out of stock headers converts too-few drips) could. It find definitive cause. Replace pvc box with new gasket. I am using Jerrys new pcv hoses and dual adapter (this is In me that I noticed later, I zip ties the duel pcv valves to the line like the Oe was, I may have pulled the tie too tight block flow through that line , just a guess , doing it different this time. Which brings me to oil catch can. I am taking a parts air bleed tube and cutting it at the rear of plenum and cutting the other side to go into the pcv dual hose and route the new pcv wires to my small micro can to right of brake booster. Any obvious problems with this plan??? Waiting on new plenum gaskets and oil catch can to arrive tomorrow. Sent from my iPhone using ZR-1 Net Registry __________________ Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454

07-20-2020	#2
Karl Join Date: May 2013 Location: Chicago Posts: 977	Re: Variation of oil catch can (1990) You do not need to cut the line. I used a 3/8" male NPT adapter from home depot (two of them) one in by the throttle body and the other at the pcv/map outlet. I used this with stainless steel braided line. __________________ 1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black Sold 1985 L98 Blue On Blue Sold

07-20-2020	#3
Corvette95 Join Date: Jan 2006 Location: Decatur, AL Posts: 1,107	Re: Variation of oil catch can (1990) Thanks, my thinking was to make a small as possible deviation from stock appearance. __________________ Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454