[Jimster480]

@MP81 , What are you thoughts on ceramic coating the compressor and turbine housings vs. A quality thermal blanket? I can get the coating done professionally for the same price as a quality custom blanket.

My thought is the larger turbo will be fairly close to the cooling fan and some other electronics. I'm thinking it may generate too much radiant heat.

I didn't have a problem with that with my civic. However the fan shroud is metal, not sure about the cruze one. Turbo blankets help with spool times and radiant heat so it's a good idea.

 

[Jimster480]

There's still some adjustments to be made but, I don't expect fuel economy to get much better. Especially with the 180F Thermostat.

The 650cc injectors are putting a lot of E85 into the cylinders. I'm not even sure it would even run on 93 octane gasoline with those injectors.

My Turbo Civic with a single cam D16 gets 32 miles per gallon using 93 with old school ev1 pte 650cc peak and hold Style injectors. City mileage is around 25mpg.

 

[Jimster480]

What kind of power are you making? I didn't see any Dyno graphs in the first couple pages and there are over 50 pages.

 

[Jimster480]

I'm not sure. No dyno pages yet. Still in the tuning process. It's on my agenda for the spring. Right now it's tuned for minimum boost pressure (1 Bar) for winter. ❄

I watched the video from Daves world and I just don't understand why these engines don't seem to make any power.... is it the cam grinds or the ports on the head? I wish I had a shop and time to be able to explore the generally poor power produced by these engines. There has to be a bottleneck somewhere. They make torque figures but not HP which suggests flow problems at the higher RPM ranges.

 

[Jimster480]

The OE style turbine housing is the bottleneck. The exit is about 1/2" in diameter going into the exhaust. GM's goal wasn't power. It was fuel economy. When the Cruze came out in 2011 in the U.S. it was one of the most fuel efficient vehicles available without going hybrid.

Oh yeah that'll do it for sure. I know that the cruze was built completely for fuel efficiency. That's why I was wondering where the bottlenecks are.

 

[Jimster480]

No videos. Just lots of pictures.

Should make a video when you have it running again. Videos are all the rage today