late spool up
23 September 2009, 10:06 PM
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late spool up
As said in the title im a soldier out in germany and have a subaru impreza wrx 1992 jap import. im just about to set the dam thing on fire and jump in lol so any help would be great
Right here goes i bought the car about a week before i was due to fly to iraq about a year ago,on the way home the thing went **** up, i think it possibly conrod came away from the crankshaft not a 100% certain but it did sound very rough
a friend was down at the ring smashed his car(rear end) also jap inport version one so had stu 71/200 help me pull the engine and swap while engine was out swapped my turbo off the doner car also the inlet as his had 440 and i belive mine were 380s once put back together car did not boost well so asumed it was turbo as it was a little stiff bought one second hand off fleabay fitted and had the exact same problem so fitted a boost gauge was only showing 0.5 bar checked for restrictor pill and found ther was not one fitted
also tried an new boost solinoid still nothing so set about replacing gasgets (inlet also gasgets from manifold back to the turbo downpipe)
still nothing still nothing while i had the manifold off i fitted a oil catch can and carried out parrallel fuel lines still using the standard fpr, sourced a restrictor pill and car seems to boost a little better,if i push the car hard it will give me just under a bar of boost but will spool up very late nothing like the animal it used to be for that hole day i had it working fine 1 bar by about 6000 rpm
what i have just recently found out if im driving about say 60 mph in 5 the then floor it will spool up nice and early as if there is enough pressure or somthing then ill drop down to 4th and it will still boost well for a bit the after a short while it will just go back to spooling up very late also done ecu reset checked for faults but none stored
if any one has any ideas or needs more info ill do my best to get it to them asap
hope to hear from yous soon
steven (batmanwrx)
Right here goes i bought the car about a week before i was due to fly to iraq about a year ago,on the way home the thing went **** up, i think it possibly conrod came away from the crankshaft not a 100% certain but it did sound very rough
a friend was down at the ring smashed his car(rear end) also jap inport version one so had stu 71/200 help me pull the engine and swap while engine was out swapped my turbo off the doner car also the inlet as his had 440 and i belive mine were 380s once put back together car did not boost well so asumed it was turbo as it was a little stiff bought one second hand off fleabay fitted and had the exact same problem so fitted a boost gauge was only showing 0.5 bar checked for restrictor pill and found ther was not one fitted
also tried an new boost solinoid still nothing so set about replacing gasgets (inlet also gasgets from manifold back to the turbo downpipe)
still nothing still nothing while i had the manifold off i fitted a oil catch can and carried out parrallel fuel lines still using the standard fpr, sourced a restrictor pill and car seems to boost a little better,if i push the car hard it will give me just under a bar of boost but will spool up very late nothing like the animal it used to be for that hole day i had it working fine 1 bar by about 6000 rpm
what i have just recently found out if im driving about say 60 mph in 5 the then floor it will spool up nice and early as if there is enough pressure or somthing then ill drop down to 4th and it will still boost well for a bit the after a short while it will just go back to spooling up very late also done ecu reset checked for faults but none stored
if any one has any ideas or needs more info ill do my best to get it to them asap
hope to hear from yous soon
steven (batmanwrx)
24 September 2009, 08:07 PM
#3
24 September 2009, 09:30 PM
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iv had a good look at that post in the past been through it and also tryed pretty much all the same but still no joy was thinking of trying a mbc just to see if much diffrence not really a ideal saloution if it works as im not solving my problem
25 September 2009, 08:08 AM
#7
if i push the car hard it will give me just under a bar of boost but will spool up very late nothing like the animal it used to be for that hole day i had it working fine 1 bar by about 6000 rpm
what i have just recently found out if im driving about say 60 mph in 5 the then floor it will spool up nice and early as if there is enough pressure or somthing then ill drop down to 4th and it will still boost well for a bit the after a short while it will just go back to spooling up very late also done ecu reset checked for faults but none stored
if any one has any ideas or needs more info ill do my best to get it to them asap
hope to hear from yous soon
steven (batmanwrx)
what i have just recently found out if im driving about say 60 mph in 5 the then floor it will spool up nice and early as if there is enough pressure or somthing then ill drop down to 4th and it will still boost well for a bit the after a short while it will just go back to spooling up very late also done ecu reset checked for faults but none stored
if any one has any ideas or needs more info ill do my best to get it to them asap
hope to hear from yous soon
steven (batmanwrx)
I can't quite understand what you are saying 'nothing like the animal it used to be for that hole day i had it working fine 1 bar by about 6000 rpm' Thats late. How much later than that is it hitting full boost now??? Rev limiter @7-7.5k!
My MY93 WRX is full boost (17psi c.1.2bar) at under 4k rpm.
What up-pipe do you have? as a large bore or leaking one will slow down spool up time.
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25 September 2009, 03:40 PM
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b13bat hows you mate
what i was saying now i dont get 0.9 bar of boost before about 6 k shoots up to start with then sticks at 0.5 for a bit then slowly creeps up as i push it harder
when i was talking about the before i was meaning when i got the car the first day i owned it before engine went **** up
quote:
My MY93 WRX is full boost (17psi c.1.2bar) at under 4k rpm.
What up-pipe do you have? as a large bore or leaking one will slow down spool up time.
i wish
what i was saying now i dont get 0.9 bar of boost before about 6 k shoots up to start with then sticks at 0.5 for a bit then slowly creeps up as i push it harder
when i was talking about the before i was meaning when i got the car the first day i owned it before engine went **** up
quote:
My MY93 WRX is full boost (17psi c.1.2bar) at under 4k rpm.
What up-pipe do you have? as a large bore or leaking one will slow down spool up time.
i wish
25 September 2009, 11:41 PM
#9
Yeah doin fine mate
On the pic below you have the middle of the 3 ports labled 'top of bcs' it should be to Pressure Exchange Solenoid, see 2nd pic. (don't know if thats what you mean??)
Taking the boost gauge off the DV is not a good either. Take the DV straight to the manifold and tee the gauge from the middle port going to the PES.
Also 'if' the 'whats this for' tee piece is free (as it appears) lose it and connect the clear pipe direct to manifold.
http://i624.photobucket.com/albums/t...0265scooby.jpg
Heres my manifold
Red to DV
Blue to blue, a short hard pipe
Green to Pressure exchange solenoid (in next pic, green)(also tee'd off to boost gauge)
Hope this helps.
On the pic below you have the middle of the 3 ports labled 'top of bcs' it should be to Pressure Exchange Solenoid, see 2nd pic. (don't know if thats what you mean??)
Taking the boost gauge off the DV is not a good either. Take the DV straight to the manifold and tee the gauge from the middle port going to the PES.
Also 'if' the 'whats this for' tee piece is free (as it appears) lose it and connect the clear pipe direct to manifold.
http://i624.photobucket.com/albums/t...0265scooby.jpg
Heres my manifold
Red to DV
Blue to blue, a short hard pipe
Green to Pressure exchange solenoid (in next pic, green)(also tee'd off to boost gauge)
Hope this helps.
Last edited by Glowplug; 26 September 2009 at 12:01 AM.
26 September 2009, 06:58 PM
#14
You could try one but it will not solve your issues, just mask it
Simple to fit and use, it basically replaces the OE BCS, it aids spool up as it doesn't let any pressure past to the wastegate and hence illiminates creep.
Can be had direct from Darren Dawes at Hybrid Boost Controller
If used properly/safely they are a good mod
Simple to fit and use, it basically replaces the OE BCS, it aids spool up as it doesn't let any pressure past to the wastegate and hence illiminates creep.
Can be had direct from Darren Dawes at Hybrid Boost Controller
If used properly/safely they are a good mod
26 September 2009, 07:06 PM
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i know dont want to just mask it cos then im cheating but running out of ideas..... if my car was over or underfueling how would i could this cos boost issues
26 September 2009, 07:27 PM
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iv had 2 diffrent turbos on it with still the same results so i hope that can rule out the actuator also used a manual pump with with gauge and kinda checked the actuator opening fully opened about 1 bar
26 September 2009, 07:50 PM
#20
So, turbo, wastegate and gauge ruled out
That leaves pipes and hoses and the BCS then.
It only takes a small split/hole in a vac/boost pipe or a insecure end to lose boost so go over them all including looking for blockages, i replaced all my smaller ones.
If you connect the test wires under the dash does the BCS click continually??
I know this is prob old ground but i feel its worth re checking
That leaves pipes and hoses and the BCS then.
It only takes a small split/hole in a vac/boost pipe or a insecure end to lose boost so go over them all including looking for blockages, i replaced all my smaller ones.
If you connect the test wires under the dash does the BCS click continually??
I know this is prob old ground but i feel its worth re checking
26 September 2009, 08:35 PM
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mate i do this about once a week lol(test wires) iv checked checked and ckecked again i had the intercooler of last week checking that over took off the hard pipe resealed it where it conects to the intercooler but still nothing iv changed most of the pipes aswell
27 September 2009, 07:12 PM
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It could be the cat (if you have one fitted) as the cat gets hot, the metals inside it expand and cause a blockage in the exhaust, engine cant breathe-cant produce boost.
27 September 2009, 07:54 PM
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i daont have a cat fitted rookymat if there was a blockage with the breather system it would not boost correct with the actuator pipe removed but it does hmmm
27 September 2009, 08:14 PM
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hmmm indeed! no, blockages, good airflow to and out of the engine, good turbo, wastegate. Theres nothing left! unless something is over looked! then its back to the drawing board.
27 September 2009, 08:20 PM
#29
You could try one but it will not solve your issues, just mask it
Simple to fit and use, it basically replaces the OE BCS, it aids spool up as it doesn't let any pressure past to the wastegate and hence illiminates creep.
Can be had direct from Darren Dawes at Hybrid Boost Controller
If used properly/safely they are a good mod
Simple to fit and use, it basically replaces the OE BCS, it aids spool up as it doesn't let any pressure past to the wastegate and hence illiminates creep.
Can be had direct from Darren Dawes at Hybrid Boost Controller
If used properly/safely they are a good mod
What you got to lose. I say if it solves the problems then its down to the BCS
10 October 2009, 05:07 PM
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tried a working maf,full bcs and presure valve the thing on top of the bcs also tried a new dump valve but still the same reset the ecu boosted fine a couple of times then back to low o.5 then slow spool up grrrrrrr