Crankcase ventilation - ZR-1 Net Registry Forums

LGAFF · 10-06-2012

http://www.vtcoa.com/forums/f7/crank...exhaust-40927/

Ronstar · 10-06-2012

I was using the AIR pump. Was pulling to much oil and destroyed
Pump. Still getting a lot of oil. Low tension rings. Cam cover holes blocked and all ventilation ran thru injector housing to catch can. Don't want oil
running back to plenum but think I need more ventilation.
may try different air pump if I can slow oil a little or run thru
Seperator first.

Pete · 10-06-2012

I have a question why run low tension rings in a motor that already has crankcase issues in stock form? especially a street car.

Anyway if you look in the FSM check PCV valves working properly you will see it says to put a vacuum gage at the dipstick tube rev to 1500rpm you should have vacuum if no vaccum you have a leak it gives you examples oil pan gasket,valve cover etc.

I had a breather/filter in my cam cover fill cap and was getting nothing but oil.

All the big bore engines here have no issues they don't have low tension rings.
They run a catch can from PCV's and vaccum to catch can.

RonStar what engine/mods do you have?

Todd, how many miles on your motor? enough for ring seal/break in.

Pete

10-06-2012	#1
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: Crankcase ventilation http://www.vtcoa.com/forums/f7/crank...exhaust-40927/ __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-06-2012	#2
Ronstar Join Date: Jul 2012 Location: Michigan Posts: 182	Re: Crankcase ventilation I was using the AIR pump. Was pulling to much oil and destroyed Pump. Still getting a lot of oil. Low tension rings. Cam cover holes blocked and all ventilation ran thru injector housing to catch can. Don't want oil running back to plenum but think I need more ventilation. may try different air pump if I can slow oil a little or run thru Seperator first.

10-06-2012	#3
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,667	Re: Crankcase ventilation I have a question why run low tension rings in a motor that already has crankcase issues in stock form? especially a street car. Anyway if you look in the FSM check PCV valves working properly you will see it says to put a vacuum gage at the dipstick tube rev to 1500rpm you should have vacuum if no vaccum you have a leak it gives you examples oil pan gasket,valve cover etc. I had a breather/filter in my cam cover fill cap and was getting nothing but oil. All the big bore engines here have no issues they don't have low tension rings. They run a catch can from PCV's and vaccum to catch can. RonStar what engine/mods do you have? Todd, how many miles on your motor? enough for ring seal/break in. Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage Last edited by Pete; 10-07-2012 at 01:47 PM.