Well its been a while since I have been on here. Not that it really matters. Anyways, I finally got my destroked 2.4L done and running. I had an eight month setback with JE so it took way longer then I wanted. So here is a quick run down of what I did.
- 2.4L Block
- Eagle H-beam rods for a 2.2L
- 2.2L crank (2007-08 is 58x)
- Custom JE pistons setup for 9.25:1 compression
- 2007 style 2.2L head CNC ported intake runners, exhaust runners and combustion chamber (same head as a 2.4L but without VVT. My ECU does not support VVT)
- Comp cams with adjustable cam gears #113400 The cams are for the 1st gen head and have been modified to work with the 2nd gen head
- Oversized Inconel intake and exhaust valves
- ZZP 82# valve springs
- LSJ supercharger modified to fit a LS1 throttle body without an adapter. 2.7" pulley making 9 psi
- ZZP Neutral balance shafts
So the big question, why make a 2.4L smaller? More RPMs, less bottom end power with a smoother powerband helps with traction. This thing turns 8000 rpms and is still pulling. The bad news is that the blower is maxed out with my combo. Cant get boost over 9 psi. So I have a feeling I will be swapping it out for a turbo soon (already have the turbo). I really was shooting for 15 psi. No dyno numbers yet since the build is still fresh but I am estimating around 425 hp at the flywheel. A turbo running more boost should get me over 500 hp at the crank with ease. When I get dyno numbers I will post them.
The good part of the video is at 2:30.