One of my biggest problems with using the Citroën BX as a daily driver is the high RPMs at cruising speed. Noisy and on a steep part of the torque band makes for a less than enjoyable experience. Can I salvage enough parts in a gearbox teardown to improve my drive?
BX16Valve Gear Ratios
At around 65 mph the stock BE3 gearbox in the Citroën BX 16v is hammering along at 3000rpm to 3500rpm. It’s noisy and just starting to pick up the power and wants to go go go. It makes the car hard work to drive over any distance.
The most common solution for this is to change the 5th gear set in Citroën BX 16Valve to use that of a turbo-diesel car, typically dropping the cruising RPMs by around 500rpm. Fortunately, I have an old BE3 gearbox from a 309 DTurbo to pull apart and salvage the gearset.
BE3 Gearbox Teardown
I’ve had a donor gearbox for many years, taking up plenty of space. I finally caved and decided it was time to strip it down, get the parts I need out, and dispose of the rest. I didn’t need to strip the whole thing down, but it was very satisfying.
I’m glad I don’t have to try and get it back together, there was a lot of hammering involved in getting this to bits. It’s both stress relief and learning all at the same time. Given the veracity of some of the hammering, I would have expected some damage too. But I’ve ended up with the diesel gearset I need to improve the Citroën BX drive when I get around to it.