Pretty much there in the fitting of the Corsa C EPAS. It has taken a lot of trial and error to get to this point. I have taken lots of pics for a fitting guide that will be made available via the 106 Rallye Register members’ section. It is now a case of reinforcing the column and creating some proper mounting points, but a bit of bodging with some nuts and washers did for this photo. You get the idea…
As you can see the Type C EPAS puts the motor on the other side to the Type B that has been fitted to a number of other cars including Bic’s Maxi.
The column is long! I will shortly have to get a seat back in so I can adjust the seat bar mounts to the wider track needed. At this point I will be able to properly guage if it is too long. The original 106 column was a little too short for me (my seat is mounted a long way back as I am 6′ 4″) and I had been considering getting a spacer to bring it further forwards before going down the EPAS route.
If it’s not too long, then it’s just a case of getting a hub to fit the Corsa splines. If it is, I’ll chop it down and I will either weld on the 106 splined end or fit a Lifeline weld on snap off boss. This will necessitate having to find a new bearing to support the end of the shaft as the current one is pressed into an plastic covered aluminum section that I had to grind down that is pressed onto the steel.
A Lifeline boss professionally welded up looks like the way forward and I have some advice now on how Harry Hockley’s do this conversion.
Rallye Project 
Hi there, I am also in the process of mounting the same colum to a Vectra.
I will say I think I would mount yours more securely and make a proper bracket. Plus you have the unit upside down, which shouldn’t make a difference to its operation but
you will not be able to use the rear mount and you will have to remove if yo have any torque sensor issues (which you are likely too). Also it may damage the sensor mount if it it butted up against the mount you have in the picture.
I cannot stress enough how important this needs mounting especially in a rally/race car.
Hope it goes well, I purchased the speed sensor unit which enables it the torque to be altered which you may want to consider.
Hope all goes well
David
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Thanks for the comment, yes you’re right, it does need to be made very strong. The photo shows that with some modification that it will fit and can be mounted. Over 12 hours have subsequently been spent refining the position and making strong supports for the column. It’s all seam welded, gusseted and reinforced. The modifications have all been made box section so that it’s reinforced with strength in mind.
The reasons for doing this job on the chassis now was the reinforcement gussets are tied into the underside of the scuttle so there was no point painting that until all the welding related to the EPAS was sorted. I was not going to run the rearward mounting plate on the EPAS, but may reconsider this. Already have a control box for adjusting the assistance. It’ll need to be factored into the loom wiring.
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