Know the importance of PCV?
11-10-2005, 02:08 AM
#1
Never had a clean run
Thread Starter
Join Date: Dec 2004
Location: Honolulu
Age: 47
Posts: 683
Likes: 0
Received 0 Likes
on
0 Posts
Know the importance of PCV?
I know PCV relieves positive pressure in the crankcase, but how does that effect performance and what happens if this hose is blocked or kinked and doesn't allow the pressure to release?
11-10-2005, 10:18 AM
#4
Racer
Join Date: Jul 2005
Location: glendale, CA
Age: 42
Posts: 317
Likes: 0
Received 0 Likes
on
0 Posts
Yes the seals will leak for sure, I had that happen on a previous car. Cam seals, crank seal, rear main seal. The best thing to do for performance is to get a oil catch can. This will trap any of the oil in a reservoir so it doesnt go into your engine.
11-11-2005, 02:24 AM
#5
Never had a clean run
Thread Starter
Join Date: Dec 2004
Location: Honolulu
Age: 47
Posts: 683
Likes: 0
Received 0 Likes
on
0 Posts
Damn, I fixed the hose so it wasn't pinched anymore and the power band through mid throttle drastically changed. It lost quite a bit of low end jump but gained pep on the mid range RPMs. Strange...
11-11-2005, 09:51 AM
#7
Posts: 1,100,980
Join Date: Jun 2002
Location: Lake Arrowhead
Posts: 2,144
Likes: 0
Received 0 Likes
on
0 Posts
When the cars not pulling a vacuum, midrange throttle to full throttle, it's flowing alot of air from the crankcase into the intake manifold. So the boost of power in the midrange is probably due to the engine having more oxygen to burn, than if the engines pcv system was working. At the upper revs, the engines crankcase pressure is increasing and causing a drop in performance. You could just put a breather filter on the hose that is connected to the pcv valve, and plug the fitting on the throttle body. However, this will not be beneficial to the condition of your oil, it will cause condesation and acid to form inside your engine creating sludge.
The more vaucuum you can pull on the engine, the more power you can derive from it. This is why race cars run mechaical vacuum pumps. I think that Jeg's sells vacuum pump.
The more vaucuum you can pull on the engine, the more power you can derive from it. This is why race cars run mechaical vacuum pumps. I think that Jeg's sells vacuum pump.
Trending Topics
11-11-2005, 07:23 PM
#8
Never had a clean run
Thread Starter
Join Date: Dec 2004
Location: Honolulu
Age: 47
Posts: 683
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by shineynitelite
^^ still spraying?? teehhee
11-11-2005, 07:26 PM
#9
Never had a clean run
Thread Starter
Join Date: Dec 2004
Location: Honolulu
Age: 47
Posts: 683
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Chemmech
When the cars not pulling a vacuum, midrange throttle to full throttle, it's flowing alot of air from the crankcase into the intake manifold. So the boost of power in the midrange is probably due to the engine having more oxygen to burn, than if the engines pcv system was working. At the upper revs, the engines crankcase pressure is increasing and causing a drop in performance. You could just put a breather filter on the hose that is connected to the pcv valve, and plug the fitting on the throttle body. However, this will not be beneficial to the condition of your oil, it will cause condesation and acid to form inside your engine creating sludge.
The more vaucuum you can pull on the engine, the more power you can derive from it. This is why race cars run mechaical vacuum pumps. I think that Jeg's sells vacuum pump.
The more vaucuum you can pull on the engine, the more power you can derive from it. This is why race cars run mechaical vacuum pumps. I think that Jeg's sells vacuum pump.
11-12-2005, 05:42 PM
#12
Posts: 1,100,980
Join Date: Jun 2002
Location: Lake Arrowhead
Posts: 2,144
Likes: 0
Received 0 Likes
on
0 Posts
Anyone try this yet? You can get the breather and plugs at any local parts store.
Something else done on the race circuit is tapping into the exhaust system to evacuate the gases from you crankcase. Kits are available at Jegs and Summit Racing
.
Something else done on the race circuit is tapping into the exhaust system to evacuate the gases from you crankcase. Kits are available at Jegs and Summit Racing
.
11-14-2005, 12:59 PM
#13
Never had a clean run
Thread Starter
Join Date: Dec 2004
Location: Honolulu
Age: 47
Posts: 683
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Chemmech
Anyone try this yet? You can get the breather and plugs at any local parts store.
Something else done on the race circuit is tapping into the exhaust system to evacuate the gases from you crankcase. Kits are available at Jegs and Summit Racing .
Something else done on the race circuit is tapping into the exhaust system to evacuate the gases from you crankcase. Kits are available at Jegs and Summit Racing
.I'm sure b/c of this stronger vacume effect, you will have to check your oil levels a little more often than normal but it's probably worth it as the amount you will lose is probably minimal.
Thread
Thread Starter
Forum
Replies
Last Post
xsilverhawkx
2G TL Problems & Fixes
5
09-28-2015 06:51 PM
