Ok so my escort turbo seems to have what I believe to be brass looking bleed valve on it, some people say that boost controllers are the same. Could someone please tell me the difference? Also is it easier to adjust a boost controller or a bleed valve? If I have a bleed valve and wanna run more boost should I replace it with a boost controller? Does it directly replace the bleed valve?? How do I know when ive more boost? Ive got a bar turbo gauge not a psi so how do I convert? Any clarifiacation is gladly appreciated....

Thanks Steve

 

1 bar = 15psi i think...

the ERST came wuth an amal valve to control boost...

id throw bleed valve in the bin and plug amal valve bk up IMO...

then get a pro tuner to adjust boost to wot u wanna run then get them to set up fuelin etc at same time!

 

Agree with above, bleed valve is the single biggest killer of RST's

 

ive got a bleed valve but no amal valve, if i had my car set up with the bleed valve would that be ok??

 

yes

 

Boost controllers differ from bleed valves in that they control the boost electronicly.

Nothing wrong with bleed valves if they are used/fitted by a pro whilst having your car set up.

There will be a reason why your car is running the boost it is, whilst setting your car up(optimising the power) The weakest link in your spec will to an extent govern the boost and timeing that your car can run.

Dont go messing with your bleed valve. You'll more than likely dammage your engine turbo etc.

 

Ive had a bleed valve on my car for years and its been fine coz it gets left alone, its only ever adjusted when its on the rolling road.

 

But turning boost down wont do any damage, right?

 

Correct as it puts less strain on the engine

 

Why would you want to turn the boost down though?

Ok lets say you have a good reason.

You then have to rely on your boost guage (which may well be inacurate) to reset the boost and if your mis-judge things then you back into the realms of component failures.


So you pay good money to have your car setup by a proffesional, then decide that you know better that the pro.

I just dont get it!!!!

Nothing presonal, I just dont get the whole mentality of fiddling with something you are unlikely to know a whole load about, especialy when an engine failure can so easily be the outcome.

 

Good advice there Andy

 

Ok so now im really confused.. I havent messed with the bleed valve as I realise what I could do but is it worth buying one of these £20 ones off e bay and will it be safer and easier to raise my boost a bit with it? My cars only running bout 10psi and I want to raise it to bout 13-15 safely. Will I be able to do this with the boost controller easily and safely???? Is it easy to fit?? Thanks

 

How are you planning to increase the fuel level to cope with your extra 5psi and maintain a safe AFR?

 

14.7, but close enough


Unless it's a Dawes Device boost controller

 

Actually it's 14.5psi to 1 bar. 14.7 is 1 atmosphere

 

I dont think theres anything wrong with a bleed valve, the problem with bleed valves is that people get an uncontrolable urge to play with them and turn the boost up, then when it all goes wrong they blame it on the bleed vavle!!

 

Well I am gonna go to motorsport developments as soon as Ive got the cash Stu as what you posted makes total sense.... £350 is a small price compared to a new engine... Just wanted to make the car a bit quicker initially till I can afford motorsport develpoments to sort it out.. You did my last turbo a few years ago and boy what a difference and what a bargain it is for the money.. Will see you soon Stu...

Cheers Steve

 

mines got a bleed valve but a local mech who was trained by a ford dealership told me it just tricks the management into running more boost! best leave it to the pro's. theyre the guys who know how to set boost. i dont think its something u shud set at the roadside!

 

Huh? A Dawes Device isn't electronic?

Anyway, this is what you need......

 

wot does that sort of gear cost?

 

http://cgi.ebay.co.uk/BLITZ-SBC-I-CO...QQcmdZViewItem

 

That's what I put. Andy posted that boost controllers do it electronically..then I posted "unless it's a Dawes Device" due to the fact that it is a mechanical boost controller and not electronic.

 

i though the apexi electronic boost contoller was better,

but fancy the blitz one for the old mans evo

does the blitz one have the different gear different boost feature christian??

also does it control the duty cycle??

cheers

 

I'm not a fan of bleed valves myself just because ive known that many people that have popped headgaskets with them turning the boost up too high.

If you're going to buy a mechanical in car item then you need another one under the bonnet to limit how much boost the valve in the car allows. If you have just an in car one you can make your turbo boost excessively high until the weakest part lets go.

Ive also seen numerous 2 connection bleed valves on RST's but they should have the 3 pipe items so they waste back into the air box and don't create a small air leak (hence why the amal valve on a ERST has 3 connections, and a FRST has 2)

Don't forget electronic controllers control the boost curve and help reduce lag where as bleed valves don't.......

zippyobrien i have an Apexi myself which i haven't used yet, but after speaking to numerous people im told they aren't all they cracked up to be, one of the biggest complaints being the reliablility, and on that note my mate also shipped one from Japan which never worked

Christian and Beccy oooooooo very nice

 

when i get my turbo bolted back to the escort im gonna turn the bleedvalve down, (which means turning the bleed valve clockwise???) and then get it booked in at msd n let them set it up n then neva mess with it again!!