Hello all,

I understand that many PCV valves will work in the XJ-S (that is rather than pay the $60 for an OEM part). If that is true, which part have you used?

Thanks.

i se a GM chevy part from Advance auto, around $4. bucks,just had to put it in hose line with a hose clamp. works for me!

Thanks. I went with the FV-181. We'll see how it goes!

Reviving this thread:

Mine has the PVC Valve missing and hose was not connected. Temporally connected the PVC line to the back of the LH air cleaner box. Have been searching the cyber universe for a replacement but the only one coming up is the OEM starting at $60.00.

Is the above mentioned PVC valve a good substituted?

a simple PCV (positive crankcase ventelation) valve should be connected to the internals of the engine, it helps to put a slight vacuum in the crankcase, reducing oil leaks and getting rid of fumes.
valve can usually connect up high on the cam cover or any place convient and not the air cleaners, i use the vacuum from the inlet manifold to operate it,simple Chevy V8 part.

I found a PVC valve in a early 90s V6 S10 pick up with the straight ports. However, not all PVC valves are supposedly created equal and have not found any specs in the shop manual which lead me to do more and found the following sites of interest:

PCV (Purge Control Valve)
http://www.crankshaftcoalition.com/wiki/PCV_system
High Performance PCV Valve Shootout ? Flow Test Results | M/E Wagner Performance Products

with all that information ,you should be able to figure it out!

good luck

I thought I'd document in this old thread a PCV that works well in the v12 XJS. It's Motorcraft EV 225 and it's found in the 2000 Ford ranger with the 4.0L it had very little flow at idle. I tried the Autozone generic replacement PCV and it idle at 1000rpm, so too much flow. The EV 225 works great and fits perfect.

i just added to my V12, an oil catch can, it has no valve , i removed any valves at all, it puts a negative vacuum in the crankcase, with only a restricter 1/4 inch hole , it works great!
engine did increase idle speed to around 1000, so i just backed off the right side throttle plate till 850rpm, to my amazement , runs better than before and response is better also!
also no oil inside air filter areas,both sides dry, and reduced rope seal leaks !
ron


installed

Does is drain back to sump?
Where does the hose going to the manifold connect?
Where did you get the breather filter boot?

Is there a way to test if the PCV valve is working with valve in situ?

Thanks

I can plug it and see what RPM change I get. If yours is dramatically different it might be flowing too much.