Haven't been on here in a while. Have some huge updates.
After driving it all winter I was just going to leave it alone but decided I needed to finish my ideas off. I've switched so many different directions on this that I needed to stick to a plan and finish things off. Talking about it doesn't get things done.
The lifter clatter from the 2.9L was just getting too much to bare. I did get new lifters and pushrods for it and was planning to tear into it and put the Turbo on it. But looking at things I would have had to modify a bunch of pipes and thought it was just going to be a hassle. Instead I wanted more displacement. Putting the original 4.0L back into the truck and turbo that.
Game on.
2.9L out
4.0L and turbo in.
There were a few changes I made to fix issues with the setup that I previously had in the Bronco.
Mounted up a Vortech 12:1 FMU
Got it all buttoned up and running
Did some destructive testing at 5 PSI
With hooking up the wideband oxygen sensor the AFR's were reading rich and was getting a stumble and would fall flat on it's face at 4000 RPM. with an AFR of 9.5 it was running WAY rich. Switched out the FMU diaphram and swapped parts for a 10:1 kit in the FMU. Dropped AFR's down to 10.5 and could now hit redline. Not the 11.0 AFR's that is optimum but it is running great at 5 PSI. Decided it was time to up the boost some, but wanted to get the intercooler mounted.
Had to make new hot and cold side pipes. Found that the intercooler was blatantly obvious.
But finished off the tires at 7 PSI.
For giggles I put is a set of blue dots I had.
