Honda Civic 92-95 advice : add-ons

[Tom Blaney]

Actually if your motor is working well I have found that the 4.5 gearset is faster since you don't run out of gear in the middle of a corner especially at 2 in L/R or the downhill left at Summit

[Ed Funk]

So, it's really quite easy, you just need one of each!

[mossaidis]

Ed, you are so smart! sounds like a 4.7 is the way to go - redline (7800) in 4th will be about 122. Having a spare tranny is in the plans but until 2010-11.

Jimmyc thank you for the links! Expensive yet it looks like it's worth the money

Xian - no word from Blake on whether he could deliver an airdam - I just had to cancel my check.

[bonespec]

only one I trust for D series tranny gearing

http://www.zealautowerks.com/transcalc.php

Why? Because I fixed the wrong info that was copied off my 1999 webpage.

I'm flattered.....not really.

I figured out the casting codes....

[Tom Blaney]

Unfortunatly what your missing in the equation is that these motors don't make any power or torque at 7800 rpm's the torque falls off way below 7000 and the max hp is in the 6500-6800 range, so running a motor up that high will actually make you go slower. Thus the 4.5 ratio.

D Series Transmissions only need a few things to work well for a long time (assuming a street car rebuild) a) new syncro's, and bearing set, b) a Quaiffe or compatable diff., c) 4.5 4.7 ring & pinion, d) mobil 1 redcap (50wt) motor oil changed after every 3rd race.

Get the right parts for the right year gearbox and forget all the chatter about trick this or that, micro-polishing anything, and carbon fiber performance parts. Just get quaility oem compatable parts assemble it correctly and maintenance it.

[downingracing]

Unfortunatly what your missing in the equation is that these motors don't make any power or torque at 7800 rpm's the torque falls off way below 7000 and the max hp is in the 6500-6800 range, so running a motor up that high will actually make you go slower. Thus the 4.5 ratio....

My ITA built D16Z6 dyno graph would suggest that might not always be the case...

[Tom Blaney]

The 18 ITA legal D16 motors I built are the basis for the numbers. Remember your still running a stock cam, stock compression, and stock heads, so there is no justification for the extra rpm's. If your running a modified motor with more compression, breathing and modified cam than the higher rpms are warranted. Even with ecu mapping and all that it still gets down to breathing.

But who knows maybe you just have a good motor.