Hi Scotty I'm from Portugal and I recently bought a used Honda Civic vii sedan from 2005 with 145.000kms on it. Overall I find it to be a great reliable car with lots of space, and I'm using it to commute to work on a daily basis. Gas prices are through the roof here and I'm trying to make the most out of it by driving it sensibly. I recently heard that I can swap my manual gearbox to an S40 which belongs to civics of a previous generation and that were designed for long range distances which helps on fuel consumption. Is this true? Would that damage my civic in any way? Can you talk about the relation between different gearboxes and their impact on vehicle performances. Thank you so much, I appreciate your videos, please keep up with what you are doing.
heard that I can swap my manual gearbox to an S40 which belongs to civics of a previous generation
Swapping out transmissions types between different year models is risky. I doubt the potential savings in fuel costs will amount to the cost of swapping transmissions.
Keep it stock and don't spend the money on swapping trannys, put that cash towards buying fuel.
I would leave your car alone as is. Replacing gearboxes is a gamble.
In my opinion, if a car runs great, a fuel price is the cheapest cost.
This (similar topic) has been talked about numerous times if you do a search on our forum. Short answer is No, don’t do it and not worth the hassle.