Its been a while, nearly 5 months since the engine was stripped down to beef up the bottom end. The original plan was to design and fabricate a crank girdle to secure the crank and reduce vibrations at high rpms (8000rpm+). We didn't want to rush things and with a lot of other projects in-house to be completed, the baleno did end up taking a back seat.
The entire bottom end was meticulously measured following which the crank girdle was drawn up in 3d using solidworks. Machining a one off part is considerably expensive and we had one shot to get it right.
Here's how it turned out:
Putting a part which isn't supposed to be there in the first place always throws up its own set of challenges and this wasn't any different.
- The main caps had raised markings which had to be machined down in order to have a flat surface.
- The design of the main caps required the girdle to be further machined at the center in order to clear the caps.
- 4mm Shims needed to be machined to fit between the main caps and girdle along the axis of the main studs.
- The girdle had to be machined once more to accommodate the crank sensor, while leaving enough material to arrest oil seepage.
- Longer main bolts were sourced
With all that done, and a whole lot of other setbacks the bottom end was finally done and the engine was assembled and put back into the car.
While this was being done, I got my hands on a couple of T04e Turbochargers and decided to swap the TD05 with this much larger turbine. The exhaust manifold and downpipe flanges were redone to suit the t3 style flanges and the engine bay finally looked complete.
With this done we got to crank the engine - our biggest worry being the crankcase mods, which could potentially leak oil; little did we realise this would be the least of our worries.
With the car started, issues began to crop up one after another:
- Oil was leaking from the MLS head gasket
- The waterpump was leaking as well
- The oil-seals on the t04 had failed and it was dumping oil into the exhaust.
Okay. Here we go again..
Head was removed and the MLS gasket was just not sealing up the single oil oriface on the head. Sourcing another MLS gasket was out of the question, and we were extremely lucky to get a Fel-Pro Gasket from Mr. Raj Hingorani of Team PowerWheels a night before he left abroad.
The Felpro gasket is a completely different material compared to the Oe Graphite gasket and can be reused (most of the time) as it does not disintegrate easily.
With this the engine was reassembled(again!), water pump replaced and the turbo was replaced with another
brand new T04 turbo.
Started the car again, no visible leaks anywhere but with white smoke steadily increasing from the exhaust. We assumed it to be oil from the previous turbo being burnt up however just to be sure, we unbolted the downpipe from the turbo and AGAIN the seals had given up. We had used the appropriate oil feed restrictor on both turbos and I just couldn't believe this was happening!
Back to square one! Lesson learnt, avoid Chinese turbos at all costs - even if you get them for free!
After nearly 5 months, I think the concept of disappointment is beyond me! But since we believe in this car, this engine, this build .. the search began for a turbo to buy or scavenge keeping our goals in mind .. and it landed here today
Any guesses?