ilirw325

iTrader: (3)

Does anyone know why there is a ground strap on stock LS1 PCV valves? The ground bolts to the coolant cross-over pipe. The only thing I could think of it that the ground is used as a conductor from the head to transfer heat....to keep PCV warm? Any ideas?

Thanks

ty_ty13

iTrader: (42)

bump TTT

i wondered about this also

MrDude_1

iTrader: (4)

from what ive read online, it has something to do with grounding it so theres no static buildup... however i donno how accurate that is, esp since most cars dont have the PCV system grounded...

Bad30th

iTrader: (13)

It's not a ground, it's a heat sink. I think it's to keep the PCV from freezing shut in cold climates.

Rob (Bad30th)

2blue

My guess: cheap way to hold the pcv and hose from moving around.

ilirw325

iTrader: (3)

I dont know about that, if thats all it was doing, that is not cheap at all. That wire is about 3/8" diameter with crimps and looks far from cheap. Cheap, they could have used a plasic clip like all the other cheap parts used.


Im going to agree with is being a heat sink/conductor to keep the pcv functioning in cold weather and to keep water from condensating and sludging up the valve.

MeentSS02

iTrader: (11)

I'm not sure, but mine has vanished

hondo

iTrader: (2)

There's alot of condensation left in the pcv if you only take short trips. Mine umm fell off though

themealonwheels

iTrader: (20)

Thread from the dead, I'd like to get some insight as well.

Mine, um, fell off as well when I switched my LS1 PCV system for an LS6 valley cover, catch can and truck PCV valve.

So, is it meant to conduct heat rather than ground static charge? If so, can I get rid of it when switching to the truck PCV (a restrictive orifice?)

gMAG

iTrader: (1)

I don't understand why the strap would be worthy of being called a heat sink.
The PCV would prob cool off better if there was nothing nearby to inhibit airflow. imo
I think that strap is related to PCV 'biasing', which allows for the orderly exit of crankcase vapors. It's a little like the magnetic fuel saver, only better!
Honestly, I don't know either.

01ssreda4

iTrader: (96)

I think its just a makeshift holder, as we all know the hoses aren't the sturdiest things in the world.

JaYZeig

iTrader: (11)

straight from GM SERVICE INFORMATION.


The PCV valve is connected to the PCV Heat Exchange cable. The PCV Heat Exchange cable is mounted to the coolant crossover with a integral fastener (3). This cable transfers heat to the PCV valve to eliminate condensation build-up in the PCV system. This also aids in eliminating throttle body icing.

Results of Incorrect Operation

A plugged PCV valve or hose may cause:

• Rough idle

• Stalling or slow idle speed

• Oil leaks

• Sludge in engine

A leaking valve or hose would cause:

• Rough idle

• Stalling

• High idle speed