turbo times???

[SgtRC]

ok well i hate to admit it but this is my first time with a turbo, i have had superchargers but no turbo.this brings me to my question...Is a turbo timer a must have and if so how do i re install mine.....i have one that plugs into the ingnition and it also has 4 wires that need to be hooked up. looks like a a power, a ground, a remote, and 1 moer wirehelp i am so out of my leauge with this personaly i understand what the timer dose ( it alows the turbo ample time to cool down) but it seems to me if i am not going drag raceing for hours on end the danm thing will not get hot enoughf to hafta cool down right???you input will be muchly apprecated!!

[themadscientist]

It's good insurance and it's set and forget.

[SgtRC]

cool can you help me hook it up??

[SgtRC]

ok how bout this one what dose a boost controaler do?? my buddy is giveing me one and i was wondering what the hell it dose!

[themadscientist]

well the boost is controlled by letting exhaust pressure leak out ahead of the turbo so it does not have enough force applied to the exhaust wheel to spin any faster. The two primary ways are internal and external wastegates. They both do the same thing, bleed off exhaust pressure, just in different ways. The external usually called a "wastegate" uses a big poppet valve, like a larger version of the valves in the combustion chamber. The internal version, usually called an "actuator" uses a swingvalve door. Your stock turbo uses an actuator. The big round thing on your turbo with the hose going in is the spring chamber and the rod coming out attaches to the axle of the swing door.In both designs boost pressure enters the pressure chamber and pushes the the spring. At the designed pressure the spring gives and the door or valve starts to open bleeding of exhaust pressure and keeping the turbine wheel at a relatively constant speed. A boost controller intercepts this boost signal which will come from either the manifold or the turbo's compressor housing and bleed it off or resist it's flow so the actuator or wastegate does not see actual boost pressure. It tricks them into staying closed longer so boost can be raised. I do not like to increase boost very much over the spring settings with a boost controller. I prefer to use the BC to find the target pressure and then set it mechanically with a heavier spring or adjustable rod.

[SgtRC]

well the boost is controlled by letting exhaust pressure leak out ahead of the turbo so it does not have enough force applied to the exhaust wheel to spin any faster. The two primary ways are internal and external wastegates. They both do the same thing, bleed off exhaust pressure, just in different ways. The external usually called a "wastegate" uses a big poppet valve, like a larger version of the valves in the combustion chamber. The internal version, usually called an "actuator" uses a swingvalve door. Your stock turbo uses an actuator. The big round thing on your turbo with the hose going in is the spring chamber and the rod coming out attaches to the axle of the swing door.In both designs boost pressure enters the pressure chamber and pushes the the spring. At the designed pressure the spring gives and the door or valve starts to open bleeding of exhaust pressure and keeping the turbine wheel at a relatively constant speed. A boost controller intercepts this boost signal which will come from either the manifold or the turbo's compressor housing and bleed it off or resist it's flow so the actuator or wastegate does not see actual boost pressure. It tricks them into staying closed longer so boost can be raised. I do not like to increase boost very much over the spring settings with a boost controller. I prefer to use the BC to find the target pressure and then set it mechanically with a heavier spring or adjustable rod.

cool brother thanks for the turbo 101 hahabut for real thanks suda named this i have ni clue as to what the hell i am doing i am a offroad bubba i belive my water pump is off a GT-R how can i tell?this is why i like buying a stock car to start with i have no clue as to what has been done to this car before i got it!!

[themadscientist]

nothing special about a GT-R water pump, it's the same pump. Now there are upgrade pumps with different blades that don't cavitate as much.

[Gold Digger]

Most good timers have an auto setting that monitors your RPM's and will set the time accordingly. Mine usually never goes over 10 seconds, unless of course I am driving on the highway or really getting into it.

Mine even has a boost meter on it, with peak hold...Scored it for $30 on Yahoo Japan auctions.

Your turbo timer should have a harness and three additional wires (four if it has an Auto Timer setting) coming off of it. The red is usually your power wire. Should be hooked up to an ignition lead. (One that is on with the ignition and off when the key is out) The black, ground. Usually the third is green or blue. That is the one that goes to your hand brake signal. The little spring loaded switch that turns your light on and off. It's what keeps your car running if your hand brake is set. The other would be your ECU's Tachometer lead. You splice into that so the timer can monitor your RPMs if it has an auto setting.

As far as the harness, you need to get one from the maker of your timer that is designed for your specific car's ignition. If you have everything, it's usually at 15-25 minute install.

My Laurel, though, I had to get a key lock by-pass that allows me to take out the key while it still running. You know that little button you have to push on some Nissans to take out your key after you shut the car off? Well, if the car is running, you can't push in that button. I had to get one of those by-pass switch. I can't remember where I got it, or even how much it cost.