hi

are there any other ways of controlling the boost on a 2wd cosworth engine without using this?

thanks

 

By using aftermarket boost control, air injectors, digi boost controller ETC neither being cheap, the amal valve works very well, it's only when people go big power they change to the above methods. The only other nasty way of doing it is to use a "bleed valve" which is taking a step backwards from what you already have. What makes you want to change it?

Martin

 

I personally still use the amal valve,but cant you just loop from the turbo to the actuator and set the boost from there.Just dont wind it in loads and use a gauge otherwise you wear hear a pop/bang and see lots of black stuff

 

I am also lookin at the amal valve, I am told by reducing the "R" pipe to appr. 2,5 mm I should be able to get the boost I am lookning for, which is in my case 32 psi. Is this right? Or do you guys have a better idea? I am not getting my 32 psi now....

 

Reduce the size, I took my restrictor out completely in the r section.
If you want better boost control ditch the ecu.
tabetha

 

reason i asked is because a have heard of people makiing them completly adjustable. i'm assuming that this is the bleed valve type.

think i'll stick with the amal valve.

if i chip my ecu will this alter how the amal valve works to alter the boost?

thanks

 

With a bleed valve you still won't be able to run higher boost than the chip allows, as the engine is not mapped for it so dangerous, ECU will cut ignition etc (AKA Overboost protection) With amal it will bleed off the maximum allowed by the chip.

With a nasty bleed valve, ECU has no control over boost, so can not step in if high ACT are detected as one example, as it a totally mechanical affair, so yes stick with the amal.

In short you need a chip before you can raise boost.

Martin

 

yeah that sounds good to me.

if i chip the ecu to run higher boost, how do i adjust the amal valve to allow more boost?

cheers.

 

Very good question.....I would like to know the answer as well.

 

There is no adjustment to be done, just a jet in the R outlet some drill this others just remove them.

What power you looking at going for?

Martin

 

what does the jet do?

was looking for around 450bhp with the torque in the same sort of region.

chris

 

get a decent electronic boost controller.
i'm only on a bleed valve, but i'm only running 15psi of boost at the moment and engine is mapped to run this fine.
on 450bhp, i don't think you can afford to overlook proper boost controllers.

 

Decent ecu's have vastly superior boost control than most tacky gimmick boost add ons.
tabetha

 

my saff cos doesnt have a amal valve and never has while iv owned it it has a in-car bleed valve but never gets used this s piped straight to the actuator, would i be beter off fiting a amal valve?

 

So long as your ecu works with the amal valve, would be much better with it, just asking as it was bypassed before.
tabetha

 

Simply think of the amal valve as a bleed valve, as thats exactly what it is, but its ecu controlled.

To increase boost pressure you need to keep the wastegate closed, so by bleeding air out of the compressor to actuator line stops the gate from opening untill a higher pressure has been reached.
In laymans terms if the actuator has a 10 psi spring, and you want to run 15 psi of boost, you need to bleed 5 psi of boost pressure out of the line.

Now, the amal valve port R is the bleed port, if its to small you cannot bleed enough air out of it, so in some cases where high boost levels are needed, you need to allow more air to bleed off, so incresing the port size is the answer.

i would always reccomend fuelling and boost are carefully monitored by someone who knows what they are doing, as get it wrong and you will lose an engine in an instant.