TR Custom Parts
Mark Hueffman - Owner
- Joined
- May 25, 2001
Haven't run any pcv in years, oil changed every 1000 miles or so. Breathers on each valve cover and that's it. Occasional fume smell but works for me. Anybody else not running one?
Which PCV Valve?
- Thread starter 626gn
- Start date
SS/GN
Well-Known Member
- Joined
- Jun 30, 2005
UPR Racing PRO check valve (PCV) Buick V6
Fits in the stock PCV location , our custom PRO check valve is the last PCV you'll every need to purchase Features: 0 PSI Cracking PressureExclusive Face Seal O-ringOperating pressure 0-100 PSIUltra-Bite Locking Hose BarbsCorrosive Resistant Polymer BallOperating Temperature -30° to 400°...
whoosh-motorsports.myshopify.com
Damn $69 for a PCV valve. It had better suck real good for that kinda $$$$
BRAD_PADGETT
Well-Known Member
- Joined
- Jan 22, 2004
No PCV here. Breather on each valve cover. Got tired of screwing with catch can and check valves on finding good PCV valves.
1986 Buick GX1
GX1 #001 [The One and Only]
- Joined
- Apr 24, 2015
No, I haven’t. I just ran across this the other day. It seems the minimal cracking pressure might keep the blm’s in check better than the RJC.
T- Type Tim
Vice Chairman
- Joined
- Jul 8, 2001
im not.
TIMINATOR
Well-Known Member
- Joined
- Jan 26, 2020
Years ago I connected my leakdown tester to a PCV valve and kept upping the pressure. It didn't register anything.
So then I put shop air on it at 50 lbs, then checked to see if there was leakage by putting my finger over the engine side of the valve. Still nothing.
I have been running PCV valves on all of my Turbo cars for over 40 years. No issues.
I wouldn't use a plastic one, but all of the metal ones I have tested before use on mine and customers cars were fine.
More pressure from 900+ psi cylinder pressure is going past the rings and ring end gaps in 6 cylinders than past a PCV valve.
Your results may vary, but before you blame the PCV valve, you might want to temporarily plug the vent side of the rocker, then rig a pressure gauge to the other valve cover, start the engine and wing it a few times with boost. Then rethink the "problem."
Some rocker covers have the PCV hole at an angle, I don't use those in even non boosted apps. If the weight inside the valve is verticle, it works fine.
JMHO
TIMINATOR
So then I put shop air on it at 50 lbs, then checked to see if there was leakage by putting my finger over the engine side of the valve. Still nothing.
I have been running PCV valves on all of my Turbo cars for over 40 years. No issues.
I wouldn't use a plastic one, but all of the metal ones I have tested before use on mine and customers cars were fine.
More pressure from 900+ psi cylinder pressure is going past the rings and ring end gaps in 6 cylinders than past a PCV valve.
Your results may vary, but before you blame the PCV valve, you might want to temporarily plug the vent side of the rocker, then rig a pressure gauge to the other valve cover, start the engine and wing it a few times with boost. Then rethink the "problem."
Some rocker covers have the PCV hole at an angle, I don't use those in even non boosted apps. If the weight inside the valve is verticle, it works fine.
JMHO
TIMINATOR
TIMINATOR
Well-Known Member
- Joined
- Jan 26, 2020
As I said, the valve seals by gravity and the weight of the "puck." They must be verticle! They don't seal sideways either! And not as well if they are at an angle. They also don't seal upside down!
That was on an Audi board, consider the source.
TIMINATOR
That was on an Audi board, consider the source.
TIMINATOR
TIMINATOR
Well-Known Member
- Joined
- Jan 26, 2020
Elegant solution to a non existent problem in my experience. I have 4 used and 2 new stamped ones here that seal just fine. Moral of the story, check them vertically at 10 or 15 psi higher than you are running. If it seals, don't worry, if not, try a Fram or AC. That's all I use and install for customers. Keep in mind that 4, 6, 8 cylinder, big block, and small block have different weights inside. The heavier inside weight ones seal better.
If you can find the older machined steel Mopar PCV valves, they are the best. AC and Fram stamped steel ones are good too, but they don't look as cool as the machined steel, black oxide finished Mopar ones. Check out swap meets, and the Mopar boards, and guys, I have never seen one of those leak backwards. If you find an old one, take it apart and clean it, they screw together. I only have one left, and I'm keeping it! I'll post a pic later so you know what you are looking for.
Thru the years I have run: Buicks, Pontiacs, Olds, Chevies, Fords, about 10 Mopars, and a Studebaker truck. There are good and bad points to all of them.
The 440 Mopars have a 7.1" rod (you can go longer!), stroker cranks to 4.5" in any 440 block, 4.350" bores, more if you fill them, long runner intakes with no water in them so they are ALL air gap type!, and the aftermarket makes inexpensive cross bolted main caps too! My aftermarket "as cast"chinese heads for my new project flow over 300 out of the box, and 390+ with a cheap cnc port job! I will do better...
Look around, you don't need to only use Buick parts in Buicks, the other mfgrs. have some good usable parts too!
Yeah, when my Turbo T Limited is done (3 rd one for me, and 4+ years so far, and about 10 more for others), I'm doing a 72 Dodge Challenger next. I've spent about 10 grand on parts so far, and nothing was on Backorder!
TIMINATOR
If you can find the older machined steel Mopar PCV valves, they are the best. AC and Fram stamped steel ones are good too, but they don't look as cool as the machined steel, black oxide finished Mopar ones. Check out swap meets, and the Mopar boards, and guys, I have never seen one of those leak backwards. If you find an old one, take it apart and clean it, they screw together. I only have one left, and I'm keeping it! I'll post a pic later so you know what you are looking for.
Thru the years I have run: Buicks, Pontiacs, Olds, Chevies, Fords, about 10 Mopars, and a Studebaker truck. There are good and bad points to all of them.
The 440 Mopars have a 7.1" rod (you can go longer!), stroker cranks to 4.5" in any 440 block, 4.350" bores, more if you fill them, long runner intakes with no water in them so they are ALL air gap type!, and the aftermarket makes inexpensive cross bolted main caps too! My aftermarket "as cast"chinese heads for my new project flow over 300 out of the box, and 390+ with a cheap cnc port job! I will do better...
Look around, you don't need to only use Buick parts in Buicks, the other mfgrs. have some good usable parts too!
Yeah, when my Turbo T Limited is done (3 rd one for me, and 4+ years so far, and about 10 more for others), I'm doing a 72 Dodge Challenger next. I've spent about 10 grand on parts so far, and nothing was on Backorder!
TIMINATOR
626gn
Well-Known Member
- Joined
- Feb 15, 2009
Interesting, but do you have actual part numbers for the mentioned, good/best non-Buick PCV valves? Are they plug-n-play?
GNONYX
Well-Known Member
- Joined
- Oct 16, 2009
I think I might have an extra of the ACDelco CV893C, but in the mean time look into this:
Standard Motor Products V242 | PCV Valve (Vehicle Custom Fit)
With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues. As a global manufacturer of emission components, complete quality control is maintained through the manufacturing process from com
partshawk.com
Standard Motor Products V242 | PCV Valve (Vehicle Custom Fit)
With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues. As a global manufacturer of emission components, complete quality control is maintained through the manufacturing process from com
