Post by Chino Built on Jan 31, 2011 1:39:29 GMT -5
Vacuum Hose and 'T' Fittings
The blow off valve, wastegate, fuel pressure regulator(s), and boost gauge all require connections to vacuum lines to operate. For most components the stock diameter vacuum hose and 'T' fittings are sufficient. Hose and fittings should be available at your local car parts store. If you are running a B18A intake manifold you'll find some very handy ports on the back on the driver side of the manifold. These are perfect for running the blow off valve, fuel pressure regulator(s), and boost gauge. If you have a different intake manifold and need more ports you can use a vacuum manifold like that sold by Golden Eagle. This allows you to create many many vacuum sources from one large vacuum source. You can also find vacuum manifolds at McMaster on page 162 of their catalog.
Below are some pictures of the vacuum line routing for these devices.
For the wastegate, you will want to use slightly larger diameter hose. For the wastegate you will need a vacuum source that is close to the turbocharger, some turbos even have a fitting on the compressor outlet for a barbed fitting for the vacuum source. It is important to keep vacuum lines for the wastegate as short as possible. If the lines are to long they can delay the speed at which the wastegate will operate, not a good thing when regulating boost. If you are using a boost controller to regulate the wastegate then these vacuum lines should also be kept short. Below is a picture of the vacuum routing for the wastegate with a boost controller.
If you find that the vacuum lines are coming off of fittings (pushed off the fittings from boost pressure) you can use zip ties as small hose clamps to keep the hoses on their fittings.
The blow off valve, wastegate, fuel pressure regulator(s), and boost gauge all require connections to vacuum lines to operate. For most components the stock diameter vacuum hose and 'T' fittings are sufficient. Hose and fittings should be available at your local car parts store. If you are running a B18A intake manifold you'll find some very handy ports on the back on the driver side of the manifold. These are perfect for running the blow off valve, fuel pressure regulator(s), and boost gauge. If you have a different intake manifold and need more ports you can use a vacuum manifold like that sold by Golden Eagle. This allows you to create many many vacuum sources from one large vacuum source. You can also find vacuum manifolds at McMaster on page 162 of their catalog.
Below are some pictures of the vacuum line routing for these devices.
For the wastegate, you will want to use slightly larger diameter hose. For the wastegate you will need a vacuum source that is close to the turbocharger, some turbos even have a fitting on the compressor outlet for a barbed fitting for the vacuum source. It is important to keep vacuum lines for the wastegate as short as possible. If the lines are to long they can delay the speed at which the wastegate will operate, not a good thing when regulating boost. If you are using a boost controller to regulate the wastegate then these vacuum lines should also be kept short. Below is a picture of the vacuum routing for the wastegate with a boost controller.
If you find that the vacuum lines are coming off of fittings (pushed off the fittings from boost pressure) you can use zip ties as small hose clamps to keep the hoses on their fittings.