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August 9th, 2006
August 9th, 2006
August 9th, 2006
August 9th, 2006
August 9th, 2006

[User Picture]09:58 am - Well...

...it looks like I'll have another Civic shortly. *chuckles* A wagon no less, 84. :-)

Now to track down tranny parts...
Current plan: (since all the individual parts are interchangable and cheap as hell)

1st Gear2nd Gear3rd Gear4th Gear5th GearFinal Drive
85 Civic SI84-87 CRX HF84-87 CRX HF85 Civic SI84-87 CRX HF86-87 Civic SISource of Part
~7:11~8:11~7:10~7:11Per-shift Gear Ratios
3.302.031.441.000.654.40Gear Ratios
33.854.977.4111.4171.4Speed @ 6000RPM
48.265.297.3135.1161.7Stock Speed @ 6000RPM
143%119%126%121%94%New Acceleration
70%84%80%82%106%New Top Speed

The tranny would be approximately 6000rpm->4000rpm at the 2-3 and 3-4 shift (longer jump from 1st and into 5th, both intentional) and shifted down a fair bit from a stock Civic transmission (14.52 versus 10.1626 for the standard '84 transmission) so it'll accelerate MUCH better from a dead stop.

Edit And just as a side-note before people go "BUH? You'll go how fast?!?" at the top speeds I listed there, note that especially 5th gear is purely a 'cruising at 55-75 gear on flat ground' choice meant to really bump up highway MPG values. The stock engine won't have enough oomph to get up to those speeds at all. But I believe the stock transmission would be stuck in 2nd at best on the grapevine, while the 're-geared' one should still be able to handle 3rd on the grapevine. And my RPM's will be around 2000 at 55mph both before and after the conversion, so my long-distance MPG won't be affected negatively by this change, only my city MPG will take a slight penalty. Only thing left to do, start going over my Civic manuals to plan out where I'll put an oil cooler and temperature probe in since I learned how cheap such a system is.2 commentsLeave a comment

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