Grainger Check Valve, Good/bad?? 6D914 - Page 2 - Dodge SRT Forum
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post #16 of 48 (permalink) Old 06-28-2009, 03:47 PM
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Originally Posted by hercfe View Post
thats why youre leaking boost. look up DCR's thread on "these engines need vacuum all the time". you should hook your breather back up to the intake. the PCV will leak a bit when you blow into it, but when on the car with the v/c vac system set up correctly it should recirculate and not leak. hook your vc back up to the intake.
They still leak and its not the way he has it hooked up that is causing the leak to happen, the factory PCV system leaks, its as simple as that.

I also want to add, that if you have a vacuum on you intake side of the turbo (CAI or SRI) you had better check your filter. There is no way the intake should create enough vacuum to cause any noticiable differnece in the crank case evacuation. I have tested this and with the proper clean filter and at WOT running full boost the intake doesnt make .2 worth of vacuum. Now with a dirty filter (different car) we did see 1.5 inches of vacuum, but that is not good for the turbo or the performance of the car. You should never ever see vacuum on the turbo inlet side of your system, it means you have a restriction somewhere.

Last edited by ptperformance; 06-28-2009 at 03:53 PM.
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post #17 of 48 (permalink) Old 06-28-2009, 03:50 PM
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Im only agreeing with one thing here. I dont belive that grainger stuff is POS. I work around that stull at the time. The only thing I agree with is the high cracking pressure on the grainger on I have. I would have bought PT's, but I think there price is very high for a CV. I dont need the 90* piece on it or the rubber hose, and I have the barber connector already, I just need the CV. 40 for a part like is way overpriced IMO. ....Never would crap on PT, but I would like to hear an unbiased opinion
There was an indepent test that was performed on these about 4 years ago, search function and you should find it. The results were tested against 2 other check valves and ours killed both of them hands down.

I understand that you don't need the other parts, but we designed this CV for the masses, we have to buy them 100 at time in order to get the price down to the $40 that we sell them at, if not I have to pay $22 each for the valve alone, not including brass, hose, zip ties, assembly and testing each and every unit after they are assembled. Trust me, there is not a huge profit margin on these like people thing there is.
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post #18 of 48 (permalink) Old 06-28-2009, 06:58 PM Thread Starter
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There was an indepent test that was performed on these about 4 years ago, search function and you should find it. The results were tested against 2 other check valves and ours killed both of them hands down.

I understand that you don't need the other parts, but we designed this CV for the masses, we have to buy them 100 at time in order to get the price down to the $40 that we sell them at, if not I have to pay $22 each for the valve alone, not including brass, hose, zip ties, assembly and testing each and every unit after they are assembled. Trust me, there is not a huge profit margin on these like people thing there is.
Definatly understandable. Mabey if you had something like a group buy going on, Id be in.(hint hint, wink wink) Im sure people would line up in one.
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post #19 of 48 (permalink) Old 06-28-2009, 07:07 PM
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post #20 of 48 (permalink) Old 06-28-2009, 07:11 PM Thread Starter
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they never say the crack pressure of the valves though.
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post #21 of 48 (permalink) Old 06-28-2009, 07:17 PM
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they never say the crack pressure of the valves though.
click on add info

# Valves open at less than 1 psi with maximum operating pressure of 400 psi.
# All-brass bodies with filled Teflon(R) poppets and stainless steel springs. 1/8" (F)NPT tapped port for pressure switch unloader connection. Maximum temperature: 400 DegreeF.

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post #22 of 48 (permalink) Old 06-28-2009, 07:20 PM
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looks like a winner to me, i might snag one of these soon.

-Keegan
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post #23 of 48 (permalink) Old 06-28-2009, 07:22 PM
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looks like a winner to me, i might snag one of these soon.

-Keegan
it has the volume but with the fittings on it may be 6 in long but it can hide under the intake manny

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post #24 of 48 (permalink) Old 06-28-2009, 08:03 PM Thread Starter
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Looks good to me. and in case anyone was wondering. The specs say opens on less than 1psi, but our gauges are in In/mg, So according to this site Pressure units converter | Convert to units measures. 1lbs = 2.04 inhg. Just divide the vacuum in half to convert to lbs. So that CV seems fine.
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post #25 of 48 (permalink) Old 06-29-2009, 06:32 AM
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I run a grainger CV and have been for the past 3 years. Never had 1 problem with it. The one i have does not look like either of the links here. But its big. If i remember right mine ran me about $20-25 and that included the 3/8" threaded ends for each side.
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post #26 of 48 (permalink) Old 06-29-2009, 07:53 AM Thread Starter
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I run a grainger CV and have been for the past 3 years. Never had 1 problem with it. The one i have does not look like either of the links here. But its big. If i remember right mine ran me about $20-25 and that included the 3/8" threaded ends for each side.
Any clue on that part no.?
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post #27 of 48 (permalink) Old 07-06-2009, 10:03 PM
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post #28 of 48 (permalink) Old 07-06-2009, 10:07 PM Thread Starter
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That looks exactly like the PT one. Hmmm
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post #29 of 48 (permalink) Old 07-07-2009, 08:16 AM
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no i dea on the part number on mine...i just walked into grainger and said give me the strongest one you got...this things big! but i see the one above is a 1/4"ends...mine are much bigger coming in at 3/8" and fits the fuel line i ran perfectly which is 3/8"

nice to have one of these down the street from me!
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post #30 of 48 (permalink) Old 07-07-2009, 10:54 AM Thread Starter
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I just called the company. Its 10$ a piece. They need a min order of 40$. So guys, if we can get 4 guys who want them I can place the order. It looks exactly the same as PT's and a 1/4 of the price.
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