Getting a double wastegate dump, why?! FAO Stu/Chip anyone!
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Getting a double wastegate dump, why?! FAO Stu/Chip anyone!
Ok, been running in the beast and noticed something rather odd on my way down to Leda the other day....
First, please note, if I put the accelerator to the floor this does NOT happen.
I was cruising down the motorway in 5th and having lots of fun putting my foot down when I noticed that if I 'feather' the accelerator (say I have it half down) I sometimes get a double chatter (it's almost like the engine is hesitating) when I'm expecting just 'moderate' acceleration. If I floor it it doesn't happen. Why is it happening when I'm accelerating?
Ideas?
Dave
First, please note, if I put the accelerator to the floor this does NOT happen.
I was cruising down the motorway in 5th and having lots of fun putting my foot down when I noticed that if I 'feather' the accelerator (say I have it half down) I sometimes get a double chatter (it's almost like the engine is hesitating) when I'm expecting just 'moderate' acceleration. If I floor it it doesn't happen. Why is it happening when I'm accelerating?
Ideas?
Dave
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Hmm, that's what I was dreading. However what I do not get is why it only does it when I'm feathering the throttle?! As I said it doesn't do it if I put it to the floor So what gives?
Dave
Dave
#5
Its only when the compressor is being spun at a rate its trying to give out more airflow than the inlet will accept, with the throttle open its not an issue.
I doubt its a problem at all from a reliability point of view on a T34.
I may have misunderstood what you are saying, but the behaviour you are describing sounds very normal to me really.
I doubt its a problem at all from a reliability point of view on a T34.
I may have misunderstood what you are saying, but the behaviour you are describing sounds very normal to me really.
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#9
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this happens on two of my mates P1's..
they both have andy F TD05 20G turbos...
they think its a prob with the dump valves on the car but could it just be the turbo surging?
any way to confirm this?
they both have andy F TD05 20G turbos...
they think its a prob with the dump valves on the car but could it just be the turbo surging?
any way to confirm this?
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Hi Guys,
Thanks for the replies...just got in from Hospital so just had a chance to read them.
I am no engine expert (I try to understand) but I find it hard to believe that my T34 is producing more air than the head/inlet can consume?!
Anyway if it IS surge is it:
a) a problem?
b) possible to rectify?
I am using a T34 .63 and have no DV.
Thankyou please
Thanks for the replies...just got in from Hospital so just had a chance to read them.
I am no engine expert (I try to understand) but I find it hard to believe that my T34 is producing more air than the head/inlet can consume?!
Anyway if it IS surge is it:
a) a problem?
b) possible to rectify?
I am using a T34 .63 and have no DV.
Thankyou please
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