Sundance 6g72 "3.0 turbo build thread"(N/A DYNO SHEET pics inside)

[Sundance 6g72]

updated as of April 2014


So the car no longer exists. I still have the trans and Engine sitting, ready for another project. This is all relevant info on the build. Its been almost 3 years sense this post was started (and even longer on turbo dodge.com)


Setup

Motor

- Stock Rotating Assembly
- 1G DSM headbolts used to hold main girdle in place
- 270 Degree Cams
- 3.3 dodge engine Valve springs (beehive, stiffer)
- LS1 Retainers and Locks (lighter and work with the new springs)
- stock headbolts, rod bolts, etc.
- stock headgasket with copper spray. bolts tightened to 90ft lb

Bolt Ons

- KMP Crossover turbo mount
- Custom made rear LOG manifold (not great but worlds better than stock)
- Ported upper plenum
- half inch spacers
- 2.5inch downpipe custom made
- 3inch catback
- ebay turbo. Wheel sizes similar to a GT3076R
- 3inch large FMIC
- 42 (or 48?? cant remember) external wastegate

Tuning and Fuel

- 46 or 48lb injectors
- walbro 255
- Megasquirt II. Batch injection. 1 coil driver running the dizzy.
- stock rail and regulator

These are the project files for my engine. I included two folders; 2012 and 2013.

2012
- E85
- Stock Cam
- Custom hear exhaust header
- ported Chrysler upper intake with half inch spacers.
- 2.5inch downpipe with 3inch exhaust
- lots of timing at 15psi (I think more than necessary). This was the difference between 300hp and 315hp however.
- BIG intercooler (3inch piping)
- AFR was 12.5-11ish, cant remember.
- 46 (or 48) lb injectors at stock fuel pressure (whatever that is)
- walbro 255 with stock lines
- 3.3 valve springs and LS1 retainers and locks?
- 1993 pistons (slightly lower compression)

2013
- 270 degree cams offered by 'turbovanman'
- E85
- timing relaxed a bit for safety concerns.
- fuel map and timing map extended to fit more boost (I only ran 8psi because my injectors were too small to run anything more with the big cams)
- everything else the same.

The tune should not just be uploaded to your ECU. Firmware differences will come into play and mess things up. Its best to copy settings over setting by setting and then import the fuel/timing/afr maps over if you want. Anyone can download these, im all about open source.

*Disclaimer* I started tuning this thing at age 18 knowing absolutely nothing. Im 21 now and still have much to learn about tuning so dont think his was professionally done. My tunes got me to school and work for 2-3 years so id say I did a decent job. Use at own risk

link is to my dropbox, it should work https://www.dropbox.com/s/6y607qimo0...6g72_Tunes.zip



edit: also note that I use e85. You can get pretty close to 93 octane numbers by pulling exactly 30% of the fuel from the fuel map (thats how I did it) or you can mess with the "required fuel" settings to pull 30% fuel. I found that taking 30% from the fuel map was the easiest because I could import an export the correct map for whatever fuel I was running that week. Also note, the timing for e85 is much more aggressive above 100kpa than I would have ran with e85. Im not sure how much timing I pulled when running 93oct, use at your own risk. The meth should help a ton as you know.

Dyno in 2012 made 300 and 315hp on 15psi (injectors MAXED) with the lame turbo and stock cams. In 2013 the new cams were installed. The boost had to be dropped to 8psi to make the same horsepower (same injector duty cycle). Injectors are holding the power back right now and the cams did their job.


2012 dyno pull at Steve Morris Engines (yes the same Steve Morris who won 2013 Drag Week)









Other videos are on my channel. I hope to put this motor into a Neon in the future.