N13 Turbo - Round 2... Fight!

[vlad01]

Nah, that's alloytec v6.

As far as ecotec 4 cyl, only real issues I've seen is the coil packs are garbage and the rocker cover seals are akin to the E series falcon ones (shite!)

But that's doesn't make the engine itself bad, far from it evidently. Mechanically they are great, just the cars and surrounding parts that GM have them in are shithouse, cough cough Cruize

[Charlescrown Profile]

They do look like a very strong engine. Similat to the Ford Ecoboost engine. It's a shame the GM engine didn't come out in any cars here. If they did they would be a good engine swap on some older Jap buzz boxes.

[vlad01]

Heaps of cars here had them, Cruize, Astra, Opel imports, few other models but I can't recall exactly which.

Everyone is saying the ecoboost is shite, something about the liners and head gaskets iirc. Lot of failures. Interestingly the ecotec 4 has both close and open deck options but don't seem to have any issues with the open versions, where as most other makes have issues with open decks and the cylinders walking.

[BennVenn Profile Website]

If you haven't seen his channel, a guy called Matthew Chevalier is building a turbo 1.8 ecotec. An interesting build (https://www.youtube.com/@cmattdabrat) It's finally up and running but has been a bit of a struggle. The block seems fine and he's putting a fair bit of boost through it.

[BennVenn Profile Website]

Pulsar is back up and running. A few afternoons on the dyno to get the tune a little better and it's now showing good gains for every 10kpa of boost added. There's still a fair bit of blowby even after running in the rings but that might be down to the 0.6mm ring gap and the oval bores. Replacing the well worn (1 broken) rings only gained 5kw at the same boost level. I guess that proves ring gap in a turbo engine doesn't loose you very much power.

105 wheel kw seems to be the limit of the fuel pump, any higher and I see VE jump from low 80's to over 100. It's running genuine XR6t light blue injectors (440cc?) but only at 3bar. The stock pump didn't sound happy at 4bar which is probably close to where the fuel pressure is under boost. I'll put the new 255 pump in there and increase fuel pressure to 4bar to get the rated 440cc and see how it goes.

My ARP rod bolts finally arrived. I'm not sure if I need them anymore, at least not with this cam. There's no more power to be had past 5500rpm so the stock bolts shouldn't be too stressed.

105wkw feels good, much better than the previous 81kw and heaps better than the stock 48kw. Probably not as fun as 120kw...