I'm planning to do both of these while my car is still ICE/Turbo so that I can avoid double-rework in future.Īnyone had the same thoughts? Alternative ideas or opinions? I'd be interested to see what other people have done for this, as well as maybe looking into an aircon solution (probably high voltage made possible once the EV conversion is complete?). The Bosch 'iBooster' also runs in 'failsafe' mode when no CAN input is detected, so for basic operation, only 12V, switched 12V and GND connections are required. It's quite compact, the original master cylinder can be mounted using a simple steel adapter plate (edit: might even be able to use the Model 3 master cylinder, as it's 1' (26mm) bore, I believe the same as my '03 NB's), and the body/pedal box mounts can be made to work with a bit of fabrication. I work in product developer for a major OEM and the use of EBBs is increasing, as is their availability at the breakers yards.īosch makes a nice range of 'iBoosters' which are available in several vehicles, but the one I think I will try to work with is from the Tesla Model 3. I plan to have its controller talk to the ECU (ME221 currently) to take vehicle speed and adjust the assist level accordingly. Yet to be completed, but I think it will be a good solution.

£100 for the EPAS column, £15 for the donor NB column, a few beers for the cutting/welding. Instead, I have taken an EPAS column from a scrapped Vauxhall Corsa B, a popular source for these things in Europe, and will be using a spare NB column as donor to fabricate the mounts to suit the NB. Also import duty and shipping double the cost. Since these convert electricity to mechanical work directly instead of via a hydraulic or pneumatic middle-step, these solutions satisfy my neurotic engineering OCD a little better.įor the EPAS, I am unlucky enough to have a RHD (UK car) and therefore (as far as I have been made aware) cannot use the existing EPAS column made available by a couple of vendors in the US.

They feel like bandaids in my opinion, although I'm sure they work perfectly well.Īs part of my long-term EV conversion plan, I have decided to go with EPAS and an Electric Brake Booster (EBB). Specifically in the ZeroEV conversion but also in other EV-hotrod conversions, I have seen the power steering pump and brake booster vacuum source replaced with electric pumps in order to retain the original PS rack and brake booster.Īlthough I like the reversibility of this approach, the engineer in me is uncomfortable with these as solutions.

Bosch ibooster part