How to up the boost with a bleed valve
25-01-2009, 08:18 AM
#1
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How to up the boost with a bleed valve
I've just fitted a new turbo and new -31 but it only boosts to 12 psi ( old turbo went to 18) I already had the bleed valve fitted and am sure it went back on without being turned and I compared the actuator rod lengths to make sure there the same. Which way should I be turning the bleed valve? open it up fully to bleed off more pressure, or close it off a bit to restrict the flow?
25-01-2009, 08:31 AM
#2
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I've just fitted a new turbo and new -31 but it only boosts to 12 psi ( old turbo went to 18) I already had the bleed valve fitted and am sure it went back on without being turned and I compared the actuator rod lengths to make sure there the same. Which way should I be turning the bleed valve? open it up fully to bleed off more pressure, or close it off a bit to restrict the flow?
25-01-2009, 08:47 AM
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It was setup on the rollers to run 18psi, but after fitting the new turbo it only runs 12 so just wanted to get it back up to 18 
25-01-2009, 08:52 AM
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ps it sounds like it hasnt got as much pre load on the actuator
Last edited by crazycage; 25-01-2009 at 08:53 AM.
25-01-2009, 10:26 AM
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have you tried removeing the bleed valve and gettin te boost to 18psi just on the rod?
would prefer that way myself,( even tho i have a bleed valve lol)
would prefer that way myself,( even tho i have a bleed valve lol)
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25-01-2009, 11:16 AM
#8
Hi Adam, it's because your old turbo was a stage 2 IIRC and you've fitted a stock T3 which flows considerabley less so you will need to open the bleed valve (as you have done) or adjust the actuator and make it work harder to get the same boost you had before.
My only concern is that this turbo will produce loads more heat (high ACT's) at that boost compared to your old Stage 2 and so this increases your chances of detonation, i would at least just do a power run to make sure it's ok, the last thing you want is at best a blown head gasket or at worst a holed piston!
My only concern is that this turbo will produce loads more heat (high ACT's) at that boost compared to your old Stage 2 and so this increases your chances of detonation, i would at least just do a power run to make sure it's ok, the last thing you want is at best a blown head gasket or at worst a holed piston!
Last edited by Karlos G; 25-01-2009 at 11:18 AM.
25-01-2009, 02:17 PM
#9
PassionFord Post Whore!!
Hi Adam, it's because your old turbo was a stage 2 IIRC and you've fitted a stock T3 which flows considerabley less so you will need to open the bleed valve (as you have done) or adjust the actuator and make it work harder to get the same boost you had before.
My only concern is that this turbo will produce loads more heat (high ACT's) at that boost compared to your old Stage 2 and so this increases your chances of detonation, i would at least just do a power run to make sure it's ok, the last thing you want is at best a blown head gasket or at worst a holed piston!
My only concern is that this turbo will produce loads more heat (high ACT's) at that boost compared to your old Stage 2 and so this increases your chances of detonation, i would at least just do a power run to make sure it's ok, the last thing you want is at best a blown head gasket or at worst a holed piston!
26-01-2009, 07:10 AM
#16
read his other thread....
https://passionford.com/forum/ford-escort-rs-turbo/280969-i-am-now-officially-fed-up-with-this-fecking-rs-turbo.html
https://passionford.com/forum/ford-escort-rs-turbo/280969-i-am-now-officially-fed-up-with-this-fecking-rs-turbo.html
Last edited by Karlos G; 26-01-2009 at 07:13 AM.
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