[WIP] 1964 Scout LS600H conversion

[robertwa]

Have you spin up the ls600H transmission yet? Is it identical to the GS450H bar the transfer box?
I like the look of that Hyundai EPAS, it looks way more compact than the Corsa options that are commonly used.

Yes, see my video a few posts back. Seems pretty similar to GS450H, some inverter wiring shares same pinout as the LS300H. Zombieverter seems to talk to it fine on GS450H setting, at least at low speed on bench. Fingers crossed it will continue to work as hoped.

The Hyundai Sonata EPAS is bigger than most other systems, motor and gearbox size, which is why I chose it for my truck, given the bigger wheels. Taking a chance on it, but seems to work well. Can be clocked in different orientations which worked in my favor.

[robertwa]

With the drum brakes, you might need a pressure retention valve or residual pressure valve for a proper function with the newer style master cylinder.
I'm not sure about the Scout, but some cars with drum brakes need to have a static pressure in the system even when the brake pedal is not depressed to avoid the pads moving away too far from the brake drum. Usually the residual pressure valve is part of the master cylinder, but as it is not needed with disc brakes, your new master cylinder does not have that feature.

Agreed - I have an adjustable proportional valve and a residual pressure release valve for rear drums ready to fit. Hoping I can make this work, otherwise I have seen adapters that mate the iBooster to Wilwood master cylinders. Some guys have had issues with the iBooster pulsating at the bottom of the stroke when used on conversions with older cars with drum brakes. I suspect that may be related to the larger fluid displacement needed for drum brake rears and am crossing my fingers that the larger bore size master will compensate for this. Time will tell!

[robertwa]

Update: Finished welding the battery box:

Welded up a shelf to mount the inverter and closed some holes in the firewall:

Here it is with my wooden mockup. Sooooo much easier to handle this than the real battery box. You can also see the chassis front crossmember now relocated and welded further up front to accommodate the large box.

Glam shot of the Scout with its face on

[robertwa]

Finished front and back battery box mounts and trial fitted:

I flipped the orientation of the top and bottom battery modules to better accommodate the available space. The top layer will overhang the transmission a little, giving room for a radiator up front (I hope)

Not shown the above, but I welded these inserts into the top rail for lifting with hoist

[robertwa]

Fitting the modules

I was able to reuse a lot of the bits from the original pack

I had to splice into the BMS harness to extend the reach to the top layer. Here is how it was originally. I bought a pin remover tool for the Molex minifit connectors, but for the life of me could not get the pins to release. May have been my technique, or a dud tool I bought, but either way I gave up and cut and spliced a join.

This is how I reach the upper deck:

Thinking of mounting the HVJB on top and coming in from underneath after routing through a manual disconnect switch:

[robertwa]

Small update, but lots of time messing around finding fittings and parts to completely replumb the braking system. Chevy Volt Gen1 iBooster, proportional valve and 10 lb residual pressure release valve for the rear drums. All new NiCopp brake line throughout. First time using this stuff, and I'm sold on how easy it is to flare. Pressure test next and wire up the iBooster.

Also got a 12 circuit universal wiring harness to start from scratch with this car. Believe it or not, this Scout 80 came equipped from the factory in 1964 with no fusebox. Simpler times then for sure. Needless to say, the wiring was a mess, so good to start over.

[robertwa]

Cleaned up underside and working on parking brake cable routing which is different for these jeep axles than on the original Scout

Fabricated new bracket and welded to frame

[robertwa]

I thought I was done with structural rust repair and then spotted this little guy lurking under the dash

Of course, it turned into a bigger adventure than I anticipated when I looked from the other side. Needed to sort it out as it is around the door pillar area. Tricky spot with multiple overlapping seams.

A lick of rust converter on the hidden inside seams

Strong now again, and will be hidden behind front fender, so does not need to look pretty

[robertwa]

It's been raining more than usual here (and of course only at weekends) so not much going on. My neighbor did stop by and ask was I building a CyberTruck

[Jacobsmess]

It's been raining more than usual here (and of course only at weekends) so not much going on. My neighbor did stop by and ask was I building a CyberTruck

20240406_081119[1].jpg

Haha, more like Cybertarp