pvc hoses... is this wrong?

[DavidT]

pcv hoses... is this wrong?

currently, the 5/8 hose coming from the valley is exposed to the atmosphere instead of hooked to the TB... and the TB is capped.
Also the smaller pcv from the valve cover is exposed as well... and the TB is capped off there as well.
Is this good or no?
I have noticed a bit of oil in the plug wells... could this be why?

 

[Chris Benvie]

Well apparently that motor only has 10k on it, but then again it wouldn't hurt to 60k it seeing as you are unsure of that.

What do you mean by the Throttle body is capped? Pics?

 

[yamahaSHO]

No, that is not correct.... You need to connect it to the TB to vacuum out the blow by and fresh air in your motor. This will help seal piston rings(ei: more power).

That should not cause oil in the plug wells, unless you have a horrific amount of blow by.

 

[Chris Benvie]

AHHH ok now i get it, this could be why you are down on power as well.

 

[Trojan Man]

It's not plugged into the TB now because the intake tract sees positive pressure once boost kicks in. Don't hook it up to the TB. The best way IMO to get around this is to build a vacuum canister to catch all the oil/crap that it will suck out. You could tap into the line BEFORE your blower, attach it to some type of canister, then attach your PCV lines to the canister. Then all oil will only go to the bottom of the canister and you could empty it every now and then.

 

[yamahaSHO]

Ah... I did not see you were SC'ed(I look at the new posts, don't notice which forum it is in)... I say route it into your exhaust.... Thats what I did

 

[texantony]

David, I've already answered this question on the phone with ya! DO NOT connect either the crank case or the valve cover breathers to the throtle body. If your car is naturally aspirated I would advice you to hook them up. However, since your engine is now with forced air it will pressurize those areas and blow your front and rear seals completely out.

 

[DavidT]

ooops
My brothers 97 F150 (5.4) started running real rough. It appears the pvc hose is busted... which APPEARS to be the cause...
Made me wonder about the sho

 

[stuntstud2]

No offense man...but it sounds like you are in way above your head! You sould just take it to someone that knows A LOT about supercharged SHOs. I hope the best for you, God knows I wish I had a superSHO!

 

[Trojan Man]

It sounds to me like he's willing to learn, and is trying to do it all himself. I give someone more credit for that than just dropping it off somewhere to get 'fixed'. Keep the questions coming man, keeps this forum active.

 

[stuntstud2]

Trojan Man...I completely agree. In no way am I bashing him. I respect him for trying to figure it out himself. Just with some of the questions that he has asked I think that this might be a little compicated without some sort of help physically there. But what do I know? It's not like I have a supercharged SHO in the garage.

 

[PanamaPat]

It sounds to me like he's willing to learn, and is trying to do it all himself. I give someone more credit for that than just dropping it off somewhere to get 'fixed'. Keep the questions coming man, keeps this forum active.

I agree, keep working at it and ask questions when you get stuck.

With regard to the PCV lines, I've tried a few setups and ended up with a simple system that is not perfect by any means, but it works.

The first hose between the valve cover and the TB is capped on both ends. The second hose from between the block was routed to a Summit catch can (the one with a K&N filter on the top). The pcv hose is shoved around 1/3 the way down the can through one of the side ports, then the other end of it is routed back to the elbow on the inlet of the Vortech.

The catch can takes car of all of the oily resisdue that gets blown out of the engine during boost. I periodically check it and drain it.

The return line from the catch can back to the blower maintains a slight vacuum on the catch can and keeps the oily vapors from penetrating the engine compartment.

Not a perfect setup, but it works.

 

[DavidT]

thanks for the encouragement guys
PanamaPat: great diagram. btw, is it really necessary to cap off the valve cover and tb ports, or can you leave the valve cover line UNCAPPED? When I got the sho, this is how it was setup: capped. However, I have since removed the cap from the valve cover end, now leaving BOTH hoses from the engine "attached to the engine" but uncapped.

 

[AutoSHO]

If you are going to leave the valve cover line uncapped, you need to put a filter on the incoming air, or else you'll be sucking dirt into your crankcase. You need to have the other PCV line run like pat showed, to a vacuum source (in this case, pre-blower) with a catch can.

 

[americanmotorsport.com]

The way it is now is fine (not optimla, but fine). But best would be if you hooked it up as it was from the factory, but added ctahc-can inline between the PCV and the upper.

If you want to leave it as is, I would run a breather or something to be able to better vent crank case pressure.

 

[Chris Benvie]

do you have the catch can on the car? I don't remember, let me know if you need one.

 

[DavidT]

do you have the catch can on the car? I don't remember, let me know if you need one.

Chris,
DO you have an extra one you want rid of?
I don't have one.