914 WRX Build Options

[waltonsm]

After seeing some recent posts, I decided it was finally time to thank everybody on this forum for years of encouragement and scope creep on my long term project. As with every real project, this will never be done, and there are certainly many things I would do differently a second time around. But I am 80% of the way there, and I am enjoying driving it as much as I am working on it for the last year or so.

I plan to add more photos of my build process over the next few weeks. You may see some of the advice you gave me realized, and probably some bad or good ideas in metal, fiberglass, and wood.

Hopefully I can help someone else out too.

-Steve


Here are some recent photos:





And a few from about 4 years ago:

[waltonsm]

PSA…

Sheared off a diff stub axle this weekend. The part I purchased is commonly used in applications like this. Calling around, failures like this are common in applications like this. Subaru Case, quaife torsen, stub, flange, CV,

I got about 20k miles on these stubs including some track use. So not terrible, but fortunately it sheared clean accelerating in first gear. Don’t think it did any engine bay damage.

Good news is that it was a beautiful day, and I carry the tools and parts to replace a CV. I was able to get the axle out quick on nice warm dry asphalt and then get my neighbor to help me flat tow 8 miles home.

I am working on a plan to replace in the car, should be doable in 4 hrs or so once I collect parts/tools. Will be welding a stud to the stub and hoping the 10 lb slide hammer will fit at full droop.



After further discussion with some suppliers. The better option for me is an OEM part number, which can be used with older OEM oil seals. I may need to widen the snap ring grooves to fit the round wire snap rings instead of the flat c rings of the older assemblies (read removable without splitting the case). Apparently some of the more recently manufactured stubs fit both rings.

Stubs: 38415AA110 (might need snap ring groove widening)
Wire Snap Rings: 805329010
L and R oil seals: 806730041/42

Note that old stubs are 30mm OD at the oil seal with 30x50x9 oil seals
New stubs to deal with new transmissions that used new CV axles have a raised land for the oil seal, I think to prevent damaging seals with splines on install. These use 35x50x9 oil seals. These stubs are only aftermarket.

I am probably a couple weeks from reassembly as I’ve got other house projects lined up, but will provide update as it comes together.