Air solenoid,boost valve thing
Turbo Mini Forums

hello

im not sure what its official name is, but does any one have one of the air solenoids going spare

i think the std metro used them to limited the car to 4psi, so many of you may have removed them when taking out the ecu

i may not be able to access tinternet this week but if you leave a post or pm me and ill reply as soon as i can

cheers

I got one but using it,similer can be found on a series 2 escort rs turbo

Metro turbo weekend driver,Mini turbo in the making again!

amal valve

Metro turbo weekend driver,Mini turbo in the making again!

how did you plumb that in?i may be able to get hold of one, dont they have 3 bits?

Amal Valve Control
The Amal valve is a crude method of boost control. It operates by diverting boost pressure away from the wastegate actuator and hence can safely increase the turboboost. The valve is fail safe, hence it is powered to divert boost away from the actuator and to the airbox. If power is removed or the wire is broken,the Amal valve will close and all the boost pressure will be passed to the actuator. There are three pipes which attach to the Amal valve, each pipe is identified by a letter on the Amal valve, C(middle) comes from the turbo housing, W(top) goes to the actuator, R(bottom) goes to the airbox. The purpose of the Amal valve is to increase the build up of boost but not allow the overboost control to operate. Hence as boost builds up to a pre-determined level within the boost control ECU the Amal valve will be powered, diverting pressure away for the actuator. When the boost reaches a certain level for engine speed and throttle position (load demand) the boost ECU will remove the power to the Amal valve and the wastegate actuator will be used to control the boost pressure. The operation of the Amal valve will usually result in the boost overshooting the pre-set value of the actuator as the boost initially comes in. The overall steady state condition boost pressure is not affected by the Amal valve for constant engine speed and load. A simple two stage boost control, high and low, can be implemented by using a switch to the Amal valve and stronger actuator. If the Amal valve is powered the turbo will operate in high boost mode, if power is removed the turbo will operate in low boost mode. The Amal valve can be configured for variable boost using a simple mark to space ratio device which can pulse the valve on and off for varying lengths of time.

Metro turbo weekend driver,Mini turbo in the making again!

hmmm ill have a fettle this weekend after the mot

thanks

Nic i have just ordered a valve that origionally went onto the vent pipe of the carbs float chamber.

I intend to hook it up on a little togle switch so i can flick it open and raise the boost by having it plumbed onto the third pipe of a bleed valve so effectivly i can open valve instantly, like on the change from 2nd to 3rd.

Edited by SumpNut on 26th Aug, 2005.

thats what im planning too, i have another trick up my sleeve with it!!