I ****ed up... But how badly?

[GeeTeeFiveOh]

So a while ago I needed to modify by MAC cold air intake tube to fit with my 93 cobra manifold and elbow adaptor. In the process I decided to remove the nipple that is supposed to have a vacuum line plumbed between it and the oil fill tube. I put after market valve covers on at the same time which had no provisions for this connection. DECIDED TO DELETE THIS VACUUM CONNECTION.

Recently I noticed the car making a horrible hissing sound after being shut off, the harder I drove the car the worse it hissed on shut down. I traced the sound to the passenger valve cover area and decided to start looking for new "permadry" valve cover gaskets since I used the crappy cork ones. After googling the shit out of hissing valve covers on shut down I found that my PCV system was not functioning as intended with that line plugged.

I had a nipple welded on the air intake tube between the MAF and TB and my new trickflow oil fill kit had provisions for a vacuum line on the fill tube so I made the connection the way its supposed to be. HISSING SOUND IS COMPLETELY GONE ON SHUT OFF.

How much damage have I done? I understand the way I had it setup before was not good for the bottom end seals at all.

 

[Tony]

what do you think could of happened to your seals?

 

[GeeTeeFiveOh]

The car runs decent but could be better (HCI, running on stock tune), it uses oil. Don't see any signs of it being combusted there is one minor minor leak. Just wanted to see what other more knowledgeable people thought.

Don't see the point of you asking me what I think, I was asking the question to somebody who knows what's up

 

[GeeTeeFiveOh]

i should add that I never did end up changing the valve cover gasket since the hissing sound has gone away since the Vac line was hooked up

 

[Tony]

The car runs decent but could be better (HCI, running on stock tune), it uses oil. Don't see any signs of it being combusted there is one minor minor leak. Just wanted to see what other more knowledgeable people thought.

Don't see the point of you asking me what I think, I was asking the question to somebody who knows what's up

lol, wow!!

 

[GeeTeeFiveOh]

lol, wow!!

wow what

 

[Tony]

wow what

your ****in rude my man. for someone asking for help with damaged seals you should think about being more polite my dude! good luck with your issues homie!

 

[GeeTeeFiveOh]

Sorry if I came across rude it was not intended. Just thought it was a little funny that you basically restated my question for me to answer.

Did not mean to infer that you did not know what was up which i see how you could of read it that way. My bad

Simply meant I was looking for an answer from someone who knows. No hard feelings I appologize

 

[copmagnet]

my understanding is you deleted your PCV system and plugged the hole?

not good. the PCV system is to ventalate your crankcase pressure, or "blow-by" plug the hole, and the blow by has to find its own hole out of the motor..

basically, a chain is only as strong as its weakest link..

 

[Tony]

Sorry if I came across rude it was not intended. Just thought it was a little funny that you basically restated my question for me to answer.

Did not mean to infer that you did not know what was up which i see how you could of read it that way. My bad

Simply meant I was looking for an answer from someone who knows. No hard feelings I appologize

its cool dude! its actually my fault for posting and not having an answer. my only reason for the question was cause i have been hearing this noise from my drivers side head area and its like a hissing sound when i shut down too. and when i saw you were worried about you lower end seals it made me worry that this is fn mine up too. i totally get not wanting ?'s when looking for answers, lol! no need to apologize! i should bro

 

[MustangChris]

another tech thread lost to tampons..... damn.



anyways you probably have excess crankcase pressure and maybe even a blow-by problem. I suggest, in the least, putting a breather cap on the valve cover.

even better: buy a breather cap with a vacuum line port and re-attach the vacuum system on the pcv.

hopefully someone with better 302 knowlege can chime in.

 

[Tony]

another tech thread lost to tampons..... damn.



anyways you probably have excess crankcase pressure and maybe even a blow-by problem. I suggest, in the least, putting a breather cap on the valve cover.

even better: buy a breather cap with a vacuum line port and re-attach the vacuum system on the pcv.

hopefully someone with better 302 knowlege can chime in.

dam u ****ers are hard on a dude, lol! no tampons chris just a slip up on my part. dudes thread just threw a red flag my way cause of the damaged seals. im stumped on the same sound but never thought about my seals so i asked the same ? he was asking, lol! my bad fellas.

 

[MustangChris]

eh. in my honest opinion you both vaged out a little. but its okay. it happens on the net. im just glad you were both smart enough and man enough to figure out no ones panties needed to tied in knots.

never the less, the pcv system is pretty much required. id vent it in some way or another. i doubt youve broken anything, but that doesnt mean youre sitting pretty. a $5.00 vent cap is the bare minimum.

 

[GeeTeeFiveOh]

Thanks for the technical responses guys,

To recap my first post: I've completely returned my PCV system to the way Ford intended.

I ran the car for almost 10,000km on a freshly rebuilt engine with that intake to oil fill tube vac line deleted. I did however have a functional PCV valve in the lower intake hooked up as ford intended. My understanding is in that setup the system only functioned in one way since the PCV valve is a check valve. What damage did I cause ?

If you hear hissing on shut off don't assume it's normal as some threads have stated. Since I fixed my PCV the car is totally silent on shut down. At least compared to what I was used to hearing.

 

[GeeTeeFiveOh]

eh. in my honest opinion you both vaged out a little. but its okay. it happens on the net. im just glad you were both smart enough and man enough to figure out no ones panties needed to tied in knots.

never the less, the pcv system is pretty much required. id vent it in some way or another. i doubt youve broken anything, but that doesnt mean youre sitting pretty. a $5.00 vent cap is the bare minimum.

I figured apologizing was the quickest way to get some answers which is all I care about. Vaging out maybe but for a good cause.

 

[copmagnet]

if you go back and look for my post, i explained it...

 

[MustangChris]

lets no longer talk about vaging unless someone has a naked woman on their lap. lol. water under the bridge, you two can share a beer next SN95 show...

also, thanks for recapping your OP, i was on my phone and i think i skipped over a little bit of it.

you probably have caused 0 damage. dont let it get your pecker soft with the gf tonight.... nothing to worry about.

I suggest: having a friend start the car. you lay in front of the car with your head next to the front bumper. have your friend turn off the car. listen for the hiss.

My guess: you blew your front main seal on the crank. $5.00 part, 15 minute fix.

 

[GeeTeeFiveOh]

I read that the PCV system helps the rings seal, hope I didint hurt those since the engine was broken in like that and always seemed to use a little oil.

My 5.4 engine in the truck which was also broken in by me never had any oil consumption issues whatsoever. The PCV was hooked up right on that engine. Apples and oranges but one of my causes for concern

 

[MustangChris]

cop magnet, he left his PCV in tact on one side, do you feel this would be enough to provide "sufficient" ventilation, and as he said in post #14, hes 100% returned the PCV to OEM routing.

I have a feeling he just over-pressured his front/rear main seal. since he can *hear* it, i have a feeling its the front, as it is not muffled by a flywheel, clutch system, and bell housing.

 

[GeeTeeFiveOh]

I'll look into the front main seal but never suspected that before