There's a slit in the pipe where the jubilee clip is, it looks like the clip has cut a slit into it. I've got silicone ones on the way! So should i be reading higher than Grrrr the hunt for more leaks is still on then! Ancillary hoses off charge pipe are now okay as i changed them but that didn't make a difference to my idle number.
FPR hose is okay DV vacuum hose is okay Breather pipe to hockey puck and also breather hoses under inlet mani are okay What else can i check without the aid of a boost leak test? You must log in or register to reply here. Similar threads S. Idle boost reading. Replies 18 Views 8K. Oct 8, S3 Paul. Boost gauge only reads negative boost? Replies 7 Views 1K. Oct 11, S3 Nattie. Have I got a boost leak?
These engines produce a big amount of compressed air due to the engine burning during combustion. To put it more simply, a turbocharger uses the exhaust air, which usually goes to waste, to give your car an acceleration boost. This is where you learn to read a boost gauge. Now, before getting into it. Take your Turbocharged vehicle to a place that has a dynamometer for testing. A boost gauge can read different boost pressures while operating. But what you really need here, is to test it in different situations to understand the difference between boost and power gains.
The readings need to be marked on your paper. Prep the car for a warm-up. Drive the car up to operating temperature after driving for a time of 15 minutes. Now, bring the car to a complete halt. Mark the boost pressure at that location. This is the boost pressure your turbo will need to start working.
Now, in a neutral position, press the gas enough to produce a high rev of to RPM. Now, check the RPM and check how long it takes the turbo to produce a positive boost. An electric one will read 0 when the engine is off, but is powered on usually with key on IGN. I mine sits on about 20 vacuum unless under load will sit at about 5.
Mechanical Stig. Originally posted by Wallie View Post. Originally posted by Rake View Post. A Turbo car will do the same, except go into boost above 0 under heavier throttle. Supercharged also albeit probably behave a bit different to a Turbo. Forced induction is a process of increasing the power output of an engine by supplying compressed air into the combustion chamber of the engine.
Turbochargers and superchargers are the basic forms of forced induction. The boost gauge is a pressure gauge that displays the boost pressure produced in a forced-induced internal combustion engine. It is normally situated on the dashboard of a car. Turbochargers and superchargers can push an engine to its limit. A boost gauge is used to make sure that forced induction is not overworking the engine and pushing it beyond its limit. All car manufacturers have OEM standards in order to ensure maximum efficiency and longevity of their engines.
A boost pressure gauge helps to maintain the OEM standard. Furthermore, many car enthusiasts like to upgrade their cars with an aftermarket forced induction system and an automotive gauge can be the best solution. A boost gauge helps to ensure that they are not wearing out their engine. Now, here goes how to read a boost gauge. Reading a vacuum boost gauge can be a bit tricky. But if you follow the proper instructions, you can get an accurate boost gauge reading very easily.
You can read a vacuum boost gauge by following three simple steps. The steps are:. You will need a dynamo to properly executing this step.
Drive your force-induced vehicle on a dynamo and simulate different driving conditions. By doing so, you can take an accurate measurement of different boost pressures produced by your turbocharger or supercharger. The boost gauge should be able to accurately display information about the power gain and boost.
Properly note down the readings on a paper. Turn your car ON and warm it up by driving for about 15 minutes. After doing so, stop the car and carefully measure the boost pressure as fast as you can.
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