Wow, where does time go. I thought this thread might have been deleted by now. I am still wrenching away on my 164. In fact, I have completed several things since I posted last in 2017.
Completed:
1. B30 T5 transmission adapter plate
2. T5 transmission rebuild and swap
3. Adapted BW35 cross member
4. Hydraulic clutch kit
5. Flywheel machining and clutch retrofit
6. Modified my pedals to add a clutch pedal and clutch master cylinder
7. Driveshaft conversion from 2 piece to 1 piece. This was needed to work with the T5.
8. All new stainless brake and fuel lines
9. Complete front and rear suspension (bushings, dampers, bearings, brakes, etc...)
10. Mounted 02 sensors in down pipes
11. Mostly completed new EFI wiring harness and mounted initial Megasquirt hardware
12. Finally painted and finished the engine
13. Adapted air cleaner housing to fit a modern TPS
T5 adapter plate
Bell side
Trans side
The adapter plate came out much better than expected. David Farwell at Vintage Iron Works did the machining for me. After drafting up the plate and working from measurements I made with a ruler and calipers, David sent me a wood prototype. After some very minor tweaks, David cut one out of aluminum and it bolted right up. This took over a year to design and have machined but well worth it. One down side is two of the T5 trans bolts shadowed two of the bolts that mount into the BW35 bell. But, the T5 weighs a little less and I upped the bell bolts a grade, so I think it will be fine. The bolts are likely stronger than the soft, cast aluminum bell housing. Once bolted up, the input shaft on the transmission dropped right into the pilot bearing. I'm pretty pleased with the result and how well things came together.
I did not take any photos of the trans rebuild. This was my first transmission rebuild and it was a bit finnicky to get parts to fit at times. I ended up having to make 1 transmission out of 2 because the drain hole cracked in the main housing. I chose to use a -260 unit out of a 04 or so V6 Mustang. In the end, this was a ton of work and required a few, more expensive tools in order to complete the job.
I misplaced the photo, but the shifter came up through the existing tunnel hole like it was meant to be. I modified my existing cross member to mount the T5. I opted for a RAM hydraulic throwout bearing. The T5 I snagged used a hydraulic bearing as well. Ram makes a kit that works for the T5 but requires some machining to make it work. I routed the hydraulic lines out through the bell on the driver's side. There are several shims that you can't see but RAM has a nicely documented procedure for setting the gap between the bearing and the pressure plate. Being that I went with the T5, it worked out such that the T5 clutch disk is a direct fit on the Volvo pressure plate and flywheel.
I built my own bracket to hold the clutch pedal and clutch master cylinder. I was able to route lines over the steering column and out the brake booster bracket. My plan for the reservoir is to mount it to the end of the brake master cylinder. Initial measurements indicate that it will just fit under the hood. Newer cars use the brake master cylinder reservoir for the clutch system but I could not find anything that would work with my original master cylinder. There really isn't a convenient place to mount the reservoir to the firewall either. Here's my pedal assembly and my line routing. I had to angle the master cylinder downward in order to clear the driver side HVAC duct (not pictured).
Anyway, more to come.