My 73 Suby drivetrain conversion upgrade!, New rebuild going in January 2025 Options

[JRust]

Okay this has been a long time coming. I am finally going to pull my incredible, reliable, powerfully awesome 158 hp NA 2.5 Subaru Drivetrain. In goes my new 2.5 Subaru Turbo motor out of a 2009 Forester XT. I will be pushing 220 plus depending on if I upgrade my turbo over the stock one. Pretty sure I am sticking with stock to start. That is a pretty easy bolt on upgrade later. I have a 2004 WRX 5speed tranny to mate up to it. Will be doing a firewall engine mount connecting to a Small car motor mount. Tranny ears for the back. Using Outfront header to move the turbo around the front of the motor. Outfront Wiring harness to the Stinger ECU. Still need to figure out the intercooler but staying in the engine bay under a GT grill. More details to follow but plan to pull my old drivetrain this weekend.

Okay so plans have changed & I am going to be putting in this 2005 WRX motor with 55k on it. My 2.5 will go in eventually but my plans are to build it out a little more. Going to get a larger turbo for it & other odds & ends to push 400hp with it. So this 2.0 motor will be pushing 220 easy & looks great

[JRust]

Okay a little progress. Took a me a bit but I got my old drivetrain shipped off to Rick. Bolted up my tranny to my new motor. Wanted to do a little test fitting tonight. With my tranny hangar's bolted to the tranny. I bolted the rear in place. My header is just hitting my battery mount which is lower on the firewall. I think it will still work there. Just may need to be unbolted & then put back on with my motor is in place. Probably the least of my worries at this point.

A few years ago when I was working on a subaru conversion before buying this one. I was using a 901 with an adapter plate to the motor I had. I had a small car mount on the suby motor with a tab welded on the front. It joined the mount in front & gave a nice flat surface. I was able to use an early stock 914 engine bar as well as the rubber motor mounts. I am looking to do something similar here. My small car mount sits pretty level with my headers. My shortened oil pan sits about an inch & a half below these headers. Using a stock engine bar it will sit level with my oil pan. Just need to add a piece to the small car mount that will let it mount on the engine bar. I'll post some pics when I've got it done. For anyone running the headers out back this would work even better.