Thats pretty much what I said, just the condensed version.



David

 

Can anyone revert back to the topic. The newer PCV valve is supposedly for the oil problem getting into the newer engines. Apparently it has a smaller orifice for flow. Now if anyone know anything about it, and the other part of my question without going off topic, I would like to know if maybe GM did find something other than using it for a vent for the Opti since that would have been easier to route the opti vent to the bottom of the throttle body and reduce cost of extra line from PCV to throttle body, and Opti to half way back to manifold. This seems excessive for GM bean counters.

 

Just because the idle didn't change doesn't mean its not screwing with the metering. Modern engines such as the LT1 and LS1 have o2 sensors and MAP sensors and idle air control motors, these all work together to make a very wide range of engine parameters behave the same. When you start letting in unmetered air in then the wide range of engine parameters gets reduced. If oil is working its way up your pcv system, Taking off the oil cap is not the solution. You likely have excessive blowby caused by improper ring seal. Which could be caused by turning the engine at too high a rpm for those rings with that stroke or by poor machining when they overbored the engine. Or you might just be pushing too much power through the stock block and be in desperate need of a partial block fill. If you fix the problem properly rather than just sticking a couple breathers on the valvecovers and calling it a day youl'l likely pick up a few HP on the top end and gain a boost in torque in the midrange due to the improved ring seal. Blowby is lost power so controlling it is more ideal than just sticking breathers on to vent it.

 

ttt

 

I never said it wouldn't mess with the sensors but it can adjust to it just fine without any problems. And with your resoning with oil in the PCV system that means that EVERY ls1, ls2, ls6, ls4, 5.3 and 6.0 truck motors, the L92's, the LT1's and LT4's come with excessive blowby from the favorty or have too much power for the stock blocks... Or could it be that GM designed the PCV system without performance in mind?

 

Just put a catch can on the line, the other pcv valve won't do anything, if it will even fit in our motors.

 

I have a Catch Can and it goes above the shroud on the drivers side for the radiator, on my Vette.
Apparently it only helps if you can keep the can in as cold a place as possible, which is hard I understand as it helps in the sperating of the water/oil etc. I have one with a filter actually designed to seperate oil from water, not metal shavings or a water filter from Home depot.

 

You do know that some of the ls1s were subject to a piston ring recall don't you?

 

I'm not sure what the mish-mash of engine listed has to do with an LT1. My factory PCV system works fine.... no oil anywhere. Yes, some people have problems, but some don't.

 

I know your engine runs perfect, and for the power and rpms it runs we could all learn from you. My LT1 was built with low tension rings, so that is my problem with oil blow by.
From what I understand the LT1's changed there location to draw air in for the PCV.
And them later in the LS type engines they change the PCV valve itslef. I understand it has a smaller hole in it which I guess is a way the engineers "fixed" a factory engines oil consumption within the PCV valve system.

 

They changed where the pcv valve itself hooks up. The fresh air intake is the same in both.

 

Thanks for the sarcasm..... why is it so hard for people to accept a simple statement of fact?

 

How about a pic of the inside of your intake manifold to show that there is not a sign of oil anywhere in it? I have a VERY hard time believing a motor built for a 300+ shot has a bone dry intake manifold when stock ones suck in oil.

 

Dude you realize that there isn't 1 lsx out there that doesn't suck in oil from the pcv from the factory right? I've watched my tuner pulled dozens of ls2 intake manifolds to swap to ported intake manifolds and everytime the manifold and head ports are DRIPPING with oil.

 

You calling me a liar? What an idiot. If you don't believe me, too damn bad - 8 years on these forums, and your the first person I've had to say that to. I suspect someone will "report" this thread, but at this point, I could care less.

Unbelievable that people can't accept a small piece of data that appears to contradict their preconceived opinions.

And, one more time.... what does the PVC issue on the LS1's have to do with an LT1.... or am I suddenly on the wrong forum?