crankcase ventilation

Old 12-26-2011, 04:15 PM
  #1  
Harbone
Moderator
RACING JUNKIE
Thread Starter
 
Harbone's Avatar
 
Join Date: Aug 2007
Posts: 4,041
Default crankcase ventilation

The car I just purchased has a healthy 454 and I think the previous owner was going to make it more drag than street. My intention is all street. He installed valve cover breathers with hoses running down the inner fenders like he was going to hook them to the headers for evacuation but never did. Am I better off just putting some regular breathers on the car or put a oil fill cap on one side and install a PCV valve on the other side? Should it be hooked to the carb if I do or directly to the intake?
__________________
Chris

As close to "Normal" as I can get...
Harbone is offline  
Old 12-26-2011, 06:25 PM
  #2  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default

Since the car has mufflers, he couldn't hook them to the headers, I would opt for the vented filler and a PVC oposite side, carb or maniflod doesn't matter, which ever looks cleaner.

JMO

Zip.
zipper06 is offline  
Old 12-26-2011, 07:58 PM
  #3  
gearhead1011
Senior Member
EXPERT BUILDER
 
gearhead1011's Avatar
 
Join Date: Jan 2004
Location: Shepherdsville, KY
Posts: 313
Default

If you go with the PCV valve and you're going to hook it to the intake make sure it's at the base of the carb and not on a runner.
gearhead1011 is offline  
Old 12-27-2011, 04:59 AM
  #4  
Harbone
Moderator
RACING JUNKIE
Thread Starter
 
Harbone's Avatar
 
Join Date: Aug 2007
Posts: 4,041
Default

Thanks guys!
__________________
Chris

As close to "Normal" as I can get...
Harbone is offline  
Old 12-27-2011, 09:00 AM
  #5  
Harbone
Moderator
RACING JUNKIE
Thread Starter
 
Harbone's Avatar
 
Join Date: Aug 2007
Posts: 4,041
Default

Originally Posted by zipper06
Since the car has mufflers, he couldn't hook them to the headers, I would opt for the vented filler and a PVC oposite side, carb or maniflod doesn't matter, which ever looks cleaner.

JMO

Zip.
Zip,
Would I want a "vented" filler? I think that would cause a huge loss of vacuum. This motor runs a 585/585 lift solid roller cam and probably doesnt have much for vacuum anyways.
__________________
Chris

As close to "Normal" as I can get...
Harbone is offline  
Old 12-27-2011, 03:24 PM
  #6  
BEAST477
Senior Member
RACING JUNKIE
 
BEAST477's Avatar
 
Join Date: Feb 2007
Location: Michigan
Posts: 1,900
Default

Hey Chris, do you need much vaucum? I see it has manual brakes. Is there still a vaucum modulator on the trans?
BEAST477 is offline  
Old 12-27-2011, 07:03 PM
  #7  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default

Chris, look at it this way, Brian was running 2 open vents into hoses. All you need to do is keep the pressure from building up in the carankcase and valve covers to keep it from blowing oil out of the valve covers at high RPM's. This will not effect your vacuum since that all comes from the intake part of the engine. The PVC valve may hardly ever open except at high RPM since they are designed to only open when there is a build up of pressure in the crankcase, which is created by blow by in the rings.

Zip.
zipper06 is offline  
Old 12-28-2011, 07:11 AM
  #8  
Harbone
Moderator
RACING JUNKIE
Thread Starter
 
Harbone's Avatar
 
Join Date: Aug 2007
Posts: 4,041
Default

Originally Posted by BEAST477
Hey Chris, do you need much vaucum? I see it has manual brakes. Is there still a vaucum modulator on the trans?
Beast there is a vacuum modulator on the trans


Zip that answers my question then, I am gonna change it over to the PCV setup this week.

Thanks for all the input guys, I cant wait to get all the changes done to the car and take her cruising in the spring! I might even have to take her to the track, its been about 4 years since I have been racing.
__________________
Chris

As close to "Normal" as I can get...
Harbone is offline  
Old 12-28-2011, 08:12 AM
  #9  
TheYellaBrick
Senior Member
RACING JUNKIE
 
TheYellaBrick's Avatar
 
Join Date: Mar 2008
Location: Emmett, Idaho
Posts: 7,334
Default

Bone, any road racing tracks nearby that host 'Track Day' events ?
How 'bout auto crossing ?
Those 2nd gen 'maros do pretty well in those type events. Also a lot easier on drive train components and is a TON of FUN !
TheYellaBrick is offline  
Old 12-28-2011, 10:03 AM
  #10  
Harbone
Moderator
RACING JUNKIE
Thread Starter
 
Harbone's Avatar
 
Join Date: Aug 2007
Posts: 4,041
Default

DD,
There is a track I believe up by the Joliet dragstrip. The car has a the big front swaybar and the stock one on the rear. I installed the full Hotchkiss setup on my last car and it made a world of difference.
__________________
Chris

As close to "Normal" as I can get...
Harbone is offline  

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -