Hi,
long time ago that i posted something here and up to last Monday i did not have done anything on the Golf, just driving driving driving. I think my headgasket is still in good shape, but my soldered head is leaking again. If i limit my boost pressure to 1,2 bar (17,5 psi) and only rev to ~5000 rpm it is not an issue at all, i just have to refill 1 ltr. coolant fluid per month. But when i go for full boost of 2,0 bar (30 psi) and rev up to limit, then i spit out a lot of coolant fluid in a short time. It seems, that the crack is to small to led fluid pass, but is big enough to led gas pass through the wall. So when i go for 30 psi boost, this also means that i will a ehaust pressure of ~30 psi, whichs pumps exhaust gas into the coolant system, so that the pressure blow off valve opens.
Anyhow, i did not post here to bore you with my leackage issues. It is much better, i put the
BIGGEST TURBO AS POSSIBLE on my AAZ, but one step after the other:
After month without sunlight and sub zero temps, the weather was good last monday i need to do something which should bring some fun, so i decided to swap the turbo on my golf.
So first the Switzer S100 needs to go:
than looking for something different:
The left one is a china GT2052V, but there is not have enough space in the engine bay for the actuator can.
So i disassemble the exhaust side i look how i could rotate the bearing section "one screw" to make it fit. It would be necessary to drill three addtionally holes in the exhasut casing, but before i could start to do that, i dump down the disassembled turbo and it land on the exhaust blades
So i think it is not longer useable, anyhow here are some more pics whichs shows the less than optimal built quality of the turbo:
here are two pics of the vtg mechanics
As i write the weather was good i wand to have something new, so i look what else is availabel:
Its a Schwitzer S2B TwinScroll and it is way to big for a 1.9 TD engine, but i always wand to know how it feels to have a turbo, which is so big that no wastegate is needed and so will cause the lowest possible exhaust pressue. Anyone here wis a bigger Turbo?
I only drive a short round, but it is really a differnt world, i did not have driven a TD, whichs feels equal. First there is the 1.9 NA torque, than there is nothing (should be possible to improve that with a little less LDA preforce), than around 3000 rpm the turbo starts to spool and boost rises up to 0,5 bar (8 psi) and from there boost continious rises with rising boost up to approximate 1,0 bar at redline, all wihtout wastegate action. It is obvious that the car is slower than before, but it is not slow in general, due to the linear gasser power curve it is very difficult to subjectiv estimate the power, but i will go to dyno as soon as possible.
Best Regards
Alleslowbuged