We make it go! Part 2 - Toyota Supra, 3.0 liter, 1996
I went quietly on a non-driving car, but at least without glitches in electronics. As I wrote before, the boost peaks of the Defi control unit always fixed 0.75-0.8.
I decided to use the function of recording indicators while driving or racing, whichever is more convenient for you. And what do we have? And we have this - the boost reaches a peak of 0.8, and then a sharp decrease to 0.4 in first gear and down to 0.1 in fifth.
That is, the pressure can inflate, but the air flow is not enough. I tear my hair on my head, why did I look only at the peaks before, and not at the boost in the dynamics. I conclude that the problem is in the sequential mode of operation of the turbines. That is, one turbine stupidly did not blow at all.
I decided to abandon the sequential mode in favor of the parallel one. I put it on the service, I'm leaving for Altai myself. While I was there, after a couple of days they call, they say that the car is ready. Friends are not going home yet. I ask you to drop me off to Gorno-Altaisk, there I take an intercity bus, 6-7 hours and I'm driving)
I start, I note for myself a different exhaust sound, some kind of correct one, you know))) We leave on the road. A little dusty. but nothing)) First gear. I start accelerating from the start. 2.5 thousand, no pickup. 3 thousand - no. 3.5 — but what is it, does not go thinking to myself. 4 thousand — Kick in the ass, about 8 revolutions instantly) A thought flashes through my head — I went)) But I don’t understand anything, there’s no acceleration, we’re skidding. Second. I fail again, we go sideways. The third, manages to stick, manages to catch at least some kind of hook. And this is what people take Supra for. CALLS!) Again axle boxes, I calm down)
The car has gone! But the box, which switched every other time, did not give a ride properly, and the wings were not what they should be - terribly short. In general, to drive from the heart until it was not possible.
ain't too late getting a kick? to 4? if you put in 2nd gear by 8, does the arrow start from 4?
In fact, positive boost comes out earlier. It is a specific such kick from 3.5 somewhere thousand. Yes, it's really all subjective. You have to go measure and look at the schedule.
On switching, you don’t fall out of the turbo zone.
In addition to the box … Maybe with a turbine che?
Strangely, no, that is ... not stable work ...
Do you have a TWIN Turbo on your supra?
One blows better at lower ones, the second at higher ones ...
Maybe the one that squints at low ones ... needs to be repaired or changed?
I rummage around in cars, but to be honest I didn’t have anything to do with a turbo ... I
apologize if I blew the garbage ...
the cooler is standing, the exhaust without resonators, but after the turbines with a 50mm sting, I welded a piece, otherwise it overblown under 1.8)) the boost didn’t help, I put the boosted computer for two years, the flight was normal, only the turbos were a season and a half and a skiff.
Also 1.5 blows) But this is too much. You need to install a boost controller. Do you have a cooler and exhaust?
I have a stable 1.5 inflated in parallel and this is without a boost controller, how much blowing do you have?
So that was the point. One turbine did not blow. Both are blowing at the same time.
I'll edit now, and it's really not clear what I wrote