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Catch can install??

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Old Aug 26, 2006 | 11:22 AM
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Default Catch can install??

I was wondering if it was possible to run the passenger side valve cover vent hose through my catch can (T it in) along with the line from the valley cover? It seems as though they will be going to the same place anyway (TB). The only difference is that the line from the valve cover will be controlled by the pcv valve now where it was just run into the TB before.
I was just going to run the valve cover hose into my air intake (since I don't have provisions for it on my new 90mmTB) as suggested by some helpful forum members yesterday but I'm wondering if I could save drilling a hole in my air intake this way.

Thanks again.
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Old Aug 26, 2006 | 05:32 PM
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Originally Posted by 97 SC Cobra
I was wondering if it was possible to run the passenger side valve cover vent hose through my catch can (T it in) along with the line from the valley cover? It seems as though they will be going to the same place anyway (TB). The only difference is that the line from the valve cover will be controlled by the pcv valve now where it was just run into the TB before.
I was just going to run the valve cover hose into my air intake (since I don't have provisions for it on my new 90mmTB) as suggested by some helpful forum members yesterday but I'm wondering if I could save drilling a hole in my air intake this way.

Thanks again.
The air traveling through that particular hose is going the opposite way than the air (crankcase vapors) in the pcv hose(s). It is supplying filtered air to the engine crankcase, not drawing air from it. Notice where it's hooked up on the factory setup? It's hooked into the throttle body in a different location for a reason.
Hook it into the air intake as suggested.
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Old Aug 26, 2006 | 07:36 PM
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Originally Posted by LoneStarFRC
The air traveling through that particular hose is going the opposite way than the air (crankcase vapors) in the pcv hose(s). It is supplying filtered air to the engine crankcase, not drawing air from it. Notice where it's hooked up on the factory setup? It's hooked into the throttle body in a different location for a reason.
Hook it into the air intake as suggested.
Or just put a little filter on the end of a short hose and tuck it under the FRC.
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Old Aug 26, 2006 | 09:22 PM
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Originally Posted by LoneStarFRC
The air traveling through that particular hose is going the opposite way than the air (crankcase vapors) in the pcv hose(s). It is supplying filtered air to the engine crankcase, not drawing air from it. Notice where it's hooked up on the factory setup? It's hooked into the throttle body in a different location for a reason.
Hook it into the air intake as suggested.
Thanks Lone star. The car was at my father's and after looking at the stock TB I can see exactly what you're talking about. I did end up tapping into my air intake.
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Old Aug 26, 2006 | 09:24 PM
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Originally Posted by see5
Or just put a little filter on the end of a short hose and tuck it under the FRC.
Well that would have saved me some work and little $. Too bad I left to my dad's to work on the car before I read these responses.
Thanks for the response though man. I'll keep that in mind should I ever have to do this again.
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Old Aug 27, 2006 | 07:46 AM
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Originally Posted by 97 SC Cobra
Well that would have saved me some work and little $. Too bad I left to my dad's to work on the car before I read these responses.
Thanks for the response though man. I'll keep that in mind should I ever have to do this again.
The intake route is still the best way to go. At higher rpms (when there is more ring blowby) the air flow throught the intake track will help "pull" more of the excess gasses through that hose to help vent the engine better.
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Old Aug 28, 2006 | 09:29 PM
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Originally Posted by BOTTLE FED
The intake route is still the best way to go. At higher rpms (when there is more ring blowby) the air flow throught the intake track will help "pull" more of the excess gasses through that hose to help vent the engine better.
Cool man, thanks. At least I don't feel so bad for jacking around for 2 hours gathering parts and installing the line in the intake.
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Old Aug 29, 2006 | 01:05 AM
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Originally Posted by 97 SC Cobra
Cool man, thanks. At least I don't feel so bad for jacking around for 2 hours gathering parts and installing the line in the intake.
You might also want to place a paper fuel filter in this line to catch the oil that will go from valve cover to air bridge and into the intake. Also make sure you are venting behind, not in front of the MAF ...... you didn't say what air intake system you have.


DH
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Old Aug 29, 2006 | 10:15 AM
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Originally Posted by Dirty Howie
You might also want to place a paper fuel filter in this line to catch the oil that will go from valve cover to air bridge and into the intake. Also make sure you are venting behind, not in front of the MAF ...... you didn't say what air intake system you have.


DH
I did run an in-line fuel filter DH and have a halltech trap cai. I'm not sure why I need the fuel filter though if the engine is pulling fresh air into the crankcase from the cai? (It's already filtered by the warhead filter anyway) If it was pulling from the crankcase like the pcv system then I could see why. Thanks again.
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Old Aug 29, 2006 | 07:07 PM
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Originally Posted by 97 SC Cobra
I did run an in-line fuel filter DH and have a halltech trap cai. I'm not sure why I need the fuel filter though if the engine is pulling fresh air into the crankcase from the cai? (It's already filtered by the warhead filter anyway) If it was pulling from the crankcase like the pcv system then I could see why. Thanks again.
I'm no expert and I don't really understand why or how the engine gets or needs air other than the air to mix with fuel for combustion.

But I AM SURE that if you put a paper feul filter in the line from the valve cover to the Haltech airbridge you will see oil in it. When you run the car hard the air that rushes past the fitting inserted into the airbridge will SUCK air (with oil from the valve cover) not BLOW air into the fitting (bournouli effect)


DH
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Old Aug 29, 2006 | 09:26 PM
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OK, thanks DH.
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Old Aug 30, 2006 | 12:45 AM
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Originally Posted by 97 SC Cobra
OK, thanks DH.
Post back you findings....


DH
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Old Aug 30, 2006 | 10:27 AM
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Originally Posted by Dirty Howie
Post back you findings....


DH
I just started the car after the H&C&I install. Looks good so far, I don't see any leaks which was my major concern with the cometics. At first she wouldn't hold an idle but it has gotten much better and I actually drove it home from my dad's last night. Idle is pretty rough right now, the cam sounds much bigger than it actually is. I was at a stop light on the way home and a couple older gentlemen pulled next to me in a chevy pick-up. They told me I need to buy a hood for my car (I pulled it off at home before the install). I laughed and told them "I know". The passenger then says "That's not stock, is it?". "No", I replied. The driver of the truck then says "I didn't think so. Neither is this". He then proceeds to do a short burn-out beside me.
Anyway, just should I'd share. I'm pretty excited right now but not out of the woods by any means. I'll post back with my progress as well as how the catch-can is working out for me. Thanks again for the feedback.
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