Springs in Forge VTA
03 August 2003, 01:14 PM
#1
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I recently collected a set of springs for the Forge VTA to fine tune th evalve inside...
But what colour is the best ; red, blue, green, white ????
I run approx. 1.25 bar peak.
Now I have the blue spring but when acc hard in 3th there is sometimes a hesitation before the car accelerate...
The red spring should be stiffer but I'm afraid to ruin the turbo when it cannot dump enough pressure....
Advice please...
Creepy
But what colour is the best ; red, blue, green, white ????
I run approx. 1.25 bar peak.
Now I have the blue spring but when acc hard in 3th there is sometimes a hesitation before the car accelerate...
The red spring should be stiffer but I'm afraid to ruin the turbo when it cannot dump enough pressure....
Advice please...
Creepy
19 October 2003, 08:31 AM
#2
I am researching this myself for the Recirculkating #one and I am coming to the opinion that the red spring is best there.
However, this is a VTA one !, so have you tried shiming the blue spring to stiffen it up a bit. If you need more shims a modified 2p could be used.
However, this is a VTA one !, so have you tried shiming the blue spring to stiffen it up a bit. If you need more shims a modified 2p could be used.
19 October 2003, 09:59 AM
#3
How do you open the forge valve? I have a recirc one, and get a jerk when lifting off the throttle quickly on full boost ( since getting the wide neck downpipe fitted! )to chage gear or slow down..
Could this be caused by wrong spring in the forge, not opening quick enough /too quick / fluttering open&closed, or not being able to recirc the inlet pressurised air?
Running over 1 bar with scoobyecu, full decat, TD04 turbo non jap MY94 wagon.
Any ideas welcome!
Neil
Could this be caused by wrong spring in the forge, not opening quick enough /too quick / fluttering open&closed, or not being able to recirc the inlet pressurised air?
Running over 1 bar with scoobyecu, full decat, TD04 turbo non jap MY94 wagon.
Any ideas welcome!
Neil
19 October 2003, 11:48 AM
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Neil,
The jerk you're feeling is a shock wave of air hitting the MAF in the wrong direction, and confusing the hell out of the ECU. It's caused by the aggressive action of the Forge.
No problems have been caused on minedoing the same for the last 6 months and 4k km's. I'm running the red *and* blue springs, plus the DV's body has been shortened by 8mm
However, I'm also running a td05. I don't know about the td04, but for sure don't try this with a vf23.
Richard
The jerk you're feeling is a shock wave of air hitting the MAF in the wrong direction, and confusing the hell out of the ECU. It's caused by the aggressive action of the Forge.
No problems have been caused on minedoing the same for the last 6 months and 4k km's. I'm running the red *and* blue springs, plus the DV's body has been shortened by 8mm
However, I'm also running a td05. I don't know about the td04, but for sure don't try this with a vf23.
Richard
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