Quote:
Originally Posted by marcin_t
Hello guys,...
Thanks guys and waiting for answer 
Marcin |
Hi. So you're not in the us so I'm not absolutely sure but all d series engines are really really similar. That's true even when the displacement is increased, as it was between the 5th generation the 6th generation and the 7th generation. A variety of small things change however and I don't know if they changed in the same ways in Europe as they do in the united States.
So if you had a us domestic model, would you be looking for since you seem to only want to reduce highway rpm's is the 5th gear from almost any civic besides the ex or the type r. In the 7th gen, the HX and the base civic had very similar 5th years: 0.710 and 0.711. Both of those ar possibly 6% taller than you fifth gear, maybe even taller than that. It's a bit of a job because it means removing the transmission opening the casing and switching out the gear. I've never done this job but I've read from guys have been told directly that a lot of this equipment is interchangeable within the transmissions. Someday I'll experiment myself.
A second way for you to get your freeway rpms down is to enlarge in the overall tire/wheel size combination that you're running. A bigger tire wheel combination will in effect give you taller gearing will bring your rpms down on the freeway and everywhere else. So a minimum 10 percent rpm reduction should be achievable for you.
I hope that helps.