RR result question
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I had my S2 RR'd on friday on DD rollers and i while i was impressed with the power for the spec and fact it was a DIY budget build -
171 bhp and 192ftlbs on a standard 1600 and turbo running OFAB Efi with beige injectors, collins powerchip and double capacity cooler.
It would only hold 12.5psi though- fueling would be fine for more and it peaks at @14.5psi.
Turning the boost up just creates more of a peak but it won't hold it.
I'm only running a bleed valve and -31 would boost controller help or is my T3 turbo just rubbish
171 bhp and 192ftlbs on a standard 1600 and turbo running OFAB Efi with beige injectors, collins powerchip and double capacity cooler.
It would only hold 12.5psi though- fueling would be fine for more and it peaks at @14.5psi.
Turning the boost up just creates more of a peak but it won't hold it.
I'm only running a bleed valve and -31 would boost controller help or is my T3 turbo just rubbish
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Last edited by Chris69; 07-09-2009 at 12:21 PM.
#4
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I would bin the bleed valve as they are crap imo, get an electronic boost controller and make sure the actuator is not weakened in any way, you will see it hold boost much better and also spin up a lot quicker
Speak to Vince @ cr turbos (01425638426) say Raj @ autoflock gave you their number. He always gives me sound advice, my old escort which was on mfi used to spin up a lot better before I had a bleed valve fitted, even though the car bosted more after fitting it I gained a lot more lag.
Hope this helps Chris
Speak to Vince @ cr turbos (01425638426) say Raj @ autoflock gave you their number. He always gives me sound advice, my old escort which was on mfi used to spin up a lot better before I had a bleed valve fitted, even though the car bosted more after fitting it I gained a lot more lag.
Hope this helps Chris
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cheers guys,
I did suspect the crappy bleed valve, i can't stretch to an electronic boost controller at the mo.
-31 is practically brand new as i didn't fit it that long ago so i hope its not that!
how can i check if it is maybe a bit weak?
I did suspect the crappy bleed valve, i can't stretch to an electronic boost controller at the mo.
-31 is practically brand new as i didn't fit it that long ago so i hope its not that!
how can i check if it is maybe a bit weak?
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#8
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you can manually test the strength of the spring but if you dont have an idea of how string it should be then its point less, CR turbos are the best people for advice on this, they should tell you over the phone what to do
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any suggestions on an alternative to an electronic boost controller for a tighter budget? or are some bleed valves maybe better than others?
mine is just an old brass jobby
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#10
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The bleed valve is not causing your lack of boost!
If it will not hold anymore then it's either the turbo, actuator, the cam has shit itself, or your timing is being retarded!
Sounds to me like the turbo doesnt have the legs (although 12psi is very low on a stock enigne), or the timing mate.
If it will not hold anymore then it's either the turbo, actuator, the cam has shit itself, or your timing is being retarded!
Sounds to me like the turbo doesnt have the legs (although 12psi is very low on a stock enigne), or the timing mate.
Last edited by Karlos G; 07-09-2009 at 01:11 PM.
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stand alone controller needs to use PWM control to make them work right, which could be a pain to find someone willing to make a suitible circuit and housing.
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The bleed valve is not causing your lack of boost!
If it will not hold anymore then it's either the turbo, actuator, the cam has shit itself, or your timing is being retarded!
Sounds to me like the turbo doesnt have the legs (although 12psi is very low on a stock enigne), or the timing mate.
If it will not hold anymore then it's either the turbo, actuator, the cam has shit itself, or your timing is being retarded!
Sounds to me like the turbo doesnt have the legs (although 12psi is very low on a stock enigne), or the timing mate.
if the spring is at it's limit though, the extra pressure in the exhaust housing will blow the wastegate open a little, causing the boost to drop off a bit.
#13
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i'm running megasquirtIIv3.0 so i can control them through that, the easy bit is making the housings, just a couple of blocks of ali with holes to mount injectors and pass the air through from turbo outlet to actuator.
stand alone controller needs to use PWM control to make them work right, which could be a pain to find someone willing to make a suitible circuit and housing.
stand alone controller needs to use PWM control to make them work right, which could be a pain to find someone willing to make a suitible circuit and housing.
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You really dont need expensive electric boost controllers.
I use turbosmart copy mechanic adjuster and -31 actuator.
it raises 20 psi very quick without any peaking. Altough i now have mitsubishi turbo but it worked with garret too.
Price was something like 25£
I use turbosmart copy mechanic adjuster and -31 actuator.
it raises 20 psi very quick without any peaking. Altough i now have mitsubishi turbo but it worked with garret too.
Price was something like 25£
Last edited by Antti O; 07-09-2009 at 03:13 PM.
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knew it wouldn't be simple lol
I'll just leave it as be until i have some money to replace things I think its plenty enough fun as it is at the mo.
I might get one of them mechanical adjusters though it sounds like a it might be a bit more effective at controlling the boost without spending a couple of hundred £s!
It was Mtech i ran the car @ btw- i was very tempted to hand the credit card over for a V4 ecu when you see how bad the collins map is on the graphs![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
I was very jealous of a black 300+bhp zetec turbo rst they have in there at the mo with a 6 speed box/equal length driveshafts etc etc- very very nice motor!
I'll just leave it as be until i have some money to replace things I think its plenty enough fun as it is at the mo.
I might get one of them mechanical adjusters though it sounds like a it might be a bit more effective at controlling the boost without spending a couple of hundred £s!
It was Mtech i ran the car @ btw- i was very tempted to hand the credit card over for a V4 ecu when you see how bad the collins map is on the graphs
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I was very jealous of a black 300+bhp zetec turbo rst they have in there at the mo with a 6 speed box/equal length driveshafts etc etc- very very nice motor!
Last edited by Chris69; 07-09-2009 at 04:43 PM.
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Good result chris
I've gotta be honest i had nothing but troubles with holding consistent boost levels when i used a bleed valve, mine on a standard turbo would hold 16psi with a brand new -31 many years ago and that was all it had in it.....electronic boost controllers aren't cheap but honestly mate the best money i ever spent! Controls the boost so well, can iron out nasty spikes and have mine set so it peaks and holds the same boost bar maybe 1 psi or so.
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No worries mate.....mine did 168bhp on a 120k engine, standard turbo etc and THAT cooler lol!! Oh....and mine is actually up and running after finishing it on the weekend....seems all good but mot and then running in will tell haha
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Chris, I would have a work in Matts ear regarding one of his ecu's, even the v3 ecu can run a boost controller. try and stretch to buying the v4, matt can sort the loom so it basically plugas straight in and all you need to do is buy an amal valve which are between 20-60, you will have a fully mappable ecu with boost control, als, lc, etc etc etc.
Now, where is that credit card
Now, where is that credit card
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great news on yours dave knew you would get back into that seat, yours will probably make more than mine while your running it in
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Chris, I would have a work in Matts ear regarding one of his ecu's, even the v3 ecu can run a boost controller. try and stretch to buying the v4, matt can sort the loom so it basically plugas straight in and all you need to do is buy an amal valve which are between 20-60, you will have a fully mappable ecu with boost control, als, lc, etc etc etc.
Now, where is that credit card![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
Now, where is that credit card
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#30
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the afr seems to lean off up to 13 early on but then drops rich once it comes on boost, i think this is for safety, I presume its best to be over safe when mapping a generic chip as people have different specs on their cars, does that make sense?
Last edited by Raj_FRST; 07-09-2009 at 06:09 PM.
#31
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go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on
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#33
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The only way forward is live mapping to the exact car imo, makes the most of every mod and you know its running at its best. Well in theory, lets not forget it is a ford.lol
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#37
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raj -
wot = wide open throttle.
afr = air fuel ratio
chris69 - it need'nt be expensive to go down the external wastegate route. i did this with mine as i was fed up with busting rads with my actuator, but the added bonus is i get no peaking it just holds boost all the way through. i did my whole set up for £100 but can be done for even less. oh and the screamer pipe noise is awsome if you wanna run it that way
wot = wide open throttle.
afr = air fuel ratio
chris69 - it need'nt be expensive to go down the external wastegate route. i did this with mine as i was fed up with busting rads with my actuator, but the added bonus is i get no peaking it just holds boost all the way through. i did my whole set up for £100 but can be done for even less. oh and the screamer pipe noise is awsome if you wanna run it that way
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#39
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My mapping was going well until my trigger wheel came loose at 7000rpm due to poor welding!
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I'm waiting on a new one, it's been welded, and being balanced as we speak.
But since then my ECU has decided to throw a wobbly so i'm trying to sort that out right now
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#40
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Yeah as above 'wide open throttle', full load is foot flat down in 3rd, 4th, or 5th at 6400rpm, basically when your engine need the most fuel/air, and AFR is again as above Air to Fuel Ratio.
My mapping was going well until my trigger wheel came loose at 7000rpm due to poor welding!![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
I'm waiting on a new one, it's been welded, and being balanced as we speak.
But since then my ECU has decided to throw a wobbly so i'm trying to sort that out right now![Wall](https://passionford.com/forum/images/smilies/wall.gif)
My mapping was going well until my trigger wheel came loose at 7000rpm due to poor welding!
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
I'm waiting on a new one, it's been welded, and being balanced as we speak.
But since then my ECU has decided to throw a wobbly so i'm trying to sort that out right now
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
@ram - can you post a thread or let me know how you went about the external wastage setup, I wanted this only for the screamer pip, yes im a kid.lol I was going to fix the garrett wasgate shut but people said this would knacker it