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Vacuum Control (Relief) Valves
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Vacuum Control Valve - Hi-Flow GZMS StyleThe only vacuum control valve to use in large pump installations, the GZMS model can handle the largest vacuum pumps we sell and restrict the amount of vacuum you are pulling to your chosen set point ranging from 10" to 20". You can vary the opening start point and max vacuum point by installation of washers under the head of the .25" bolt. Initial tuning of the GZMS model is a bit more complex because the initial vacuum setting is determined by the installed spring height which is affected by the thickness of the valve cover the valve is installed in. Easily dismantled and installs in any valve cover just by drilling a 5/8" hole and is secured by a billet aluminum 5/8 nut on the inside of the cover. Adjustment is made by changing the position of the Stainless Steel Cap Nut. We suggest the use of a vacuum control valve in order to limit the vacuum in the pan to a net value of less than 15” of mercury. This can only be determined through installation of a vacuum gauge plumbed into your valve cover and testing on a dyno or on the track. Note: VCV102 requires 1.5" depth x 1" dia. clearance beneath top of valve cover or wherever it is to be installed. We also have matching Lock-On Breathers and Oil Fill Caps available. | ||||
| GZMS Hi-Flow Vacuum Control Valve | ||||
| PN | Description | Price | ||
| VCV102 |  Product images may differ from actual product appearance. |
GZMS Vacuum Control Valve - Designed to be installed in 5/8" hole in valve cover and has an aluminum nut that fits on the backside to retain the valve. | $79.00 | |
| VCV102A | )  Click
for Larger ImageClick to see the breather opened up Product images may differ
from actual product appearance. | This kit features a VCV102 GZMS Vacuum Control Valve installed inside a VCB101 Oil Fill Assembly. Less holes to drill in your valve cover and makes for an easier setup. Fits in standard 1-1/8" grommet valve cover hole. | $144.00 | |
| VCV102B | No Picture Available | This vacuum control assembly incorporates our VCV102 vacuum control valve in a VCB100 breather assembly and prevents outside air from going through the motor. With this design, fresh air goes directly into the vacuum pump. Fits in standard 1-1/8" grommet valve cover hole. The billet body has (1) 1/2” pipe thread. |
$154.00 | |
| VCV102C | ) Click
for Larger ImageProduct images may differ from actual product appearance. | Combination Kit: VCB100 Breather along with a VCV101 Oil Cap with the VCV102 Vacuum Control Valve installed inside it. Breather and oil cap are 1-1/8" diameter to fit a standard valve cover grommet hole. | $199.00 | |
| VCV102D | ) Click for Larger ImageProduct images may differ from actual product appearance due to fitting selections. |
Includes VCV102 installed in a Billet body that may be installed into std 1.125” grommet holes in the valve cover. (2) 1/2" pipe plug ports to connect to the vacuum pump and opposite valve cover if needed. With this design, fresh air goes directly into the vacuum pump. |
$113.00 | |
| VCV102E | Click for Larger Image Product images may differ from actual product appearance due to fitting selections. |
Includes VCV102 installed in a Billet body designed to be plumbed into #10 or #12 AN fitting in end of a valve cover where the vacuum hose typically is connected. With this design, fresh air goes directly into the vacuum pump. Body has (2) 1/2" & (1) 1" pipe ports. |
$103.00 | |
| VCV102F | Click for Larger Image Product images may differ from actual product appearance due to fitting selections. |
Includes VCV102 installed in a Billet body designed to be plumbed directly into the vacuum pump inlet port. Features (2) 1/2" & (1) 1" pipe ports. Includes 1/2" pipe to 1" pipe adapter and (2) #10 AN male AN Fittings. Fresh air design, when relief valve opens and brings fresh air directly into the vacuum pump. This prevents contamination of engine from outside air. |
$108.00 | |
Vacuum Control Valves - Budget StyleA low budget vacuum control valve suitable for use for our VP101 Series or smaller volume air flow pumps only. Adjustable from 12 to 19" vacuum. |
 Product images may differ from actual product appearance. |
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| Vacuum Control Valve | ||||
| PN | Description | Price | ||
| VCV103 | Vacuum Control Valve - Adjustable from 12” of mercury up to 19” - via adjustment of end nut. 3/8” NPT thread can screw into a bung on valve cover or into a thick valve cover that has been threaded. | $32.00 | ||
Special Vacuum Control Valve with Combo Oil Fill Cap for LSX EnginesThis is the Billet Aluminum Oil fill cap we use in our LSX motor kits, it features a 1/2" pipe port with fitting for the vacuum pump inlet and a 3/8" pipe inlet with VCV103 budget vacuum relief valve. Valve is adjustable from 12 to 19" vacuum. |
 Product images may differ from actual product appearance. |
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| Vacuum Control Valve | ||||
| PN | Description | Price | ||
| VCB103 | LSX Series Engines - Oil Filler Cap with (1) 3/8 pipe port and (1) 1/2" pipe port | $60.00 | ||
| VCB103A | LSX Series Engines - Oil Filler Cap with Vacuum Control Valve and fittings - Adjustable from 12” of mercury up to 19” - via adjustment of end nut. | $89.00 | ||
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