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PostPosted: Fri Feb 20, 2015 2:39 pm 
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Yeah that is the link, sorry mine is 4.9 not 4.7


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PostPosted: Fri Feb 20, 2015 6:43 pm 
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4.9FD or 4.7FD will work with SI gearing, but not with ZC gearing. Use the stock SI FD with the ZC gears as a cheap alternative for H2.

If Mfactory or Cusco make a 1 way diff for the D series, that is what I would get.

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PostPosted: Sat Feb 21, 2015 10:07 pm 
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One follow up question...
Are there many standing starts or rolling starts for Honda Challenge races?

I looked at the transmission ratios from here.
http://www.zealautowerks.com/transcalc.php

I would assume IF there are rolling starts I think the ZC DOHC transmission wouldn't be so bad as the 3rd, 4th and 5th gears are comparable to an Si transmission.
but
IF there are standing starts then, DOHC ZC transmission wouldn't provide the same level of acceleration.


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PostPosted: Sat Feb 21, 2015 10:07 pm 
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Plz delete this post.


Last edited by tanjulio on Mon Feb 23, 2015 8:27 pm, edited 1 time in total.

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PostPosted: Mon Feb 23, 2015 8:22 am 
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Are you comparing Si 1-5 gears with a 4.7 or 4.9 vs ZC 1-5 gears with the 4.25?

...because ZC gears are HANDS DOWN better. I've had both in the same car. It's like GSR 1-4 with a B16 5th vs LS 1-4 with a GSR 5th.

What I did at one point was swap around stuff.

Si 1-2, ZC 3-4, Si 5th (closer 2-3 shift, 5th doesn't run out so quickly; this with a MFactory 4.5 or 4.7 would work)
ZC 1-4, Si 5th (basically a GSR trans for a D-Series; this with that 4.5 FD or 4.7 would be great too)

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PostPosted: Mon Feb 23, 2015 8:44 pm 
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Quote:
Si 1-2, ZC 3-4, Si 5th (closer 2-3 shift, 5th doesn't run out so quickly; this with a MFactory 4.5 or 4.7 would work)
ZC 1-4, Si 5th (basically a GSR trans for a D-Series; this with that 4.5 FD or 4.7 would be great too)

ILIKETODRIVE
I just see one option for the 91 Transmission...4.9 Final drive. the FD you suggest is for a 92-00 civic transmission.
http://www.teammfactory.com/final-drive-gears_94

1: Perhaps there is another company that sells 'clutch type limited slips?

Okay.. so I'm still learning..
2: Are BOTH the final drive and limited slip attached together
OR
are they separate units that have to be purchased separately ?

Thanks..


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PostPosted: Tue Feb 24, 2015 7:53 am 
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Hydro final drives and differentials fit Si/ZC cable transmissions, if I recall correctly. I don't recall the exact things needed but on D-Series.org there is a boatload of info between Aquafina and Mista Bone that would be able to sort it out.

There is a marking on the transmission near the passenger axle seal that tells you what type of gearing/case it is. It's a circle with some combination of letter and numbers. I do remember this part being critical.

The differential and final drive are separate units. The ring gear, which is 1/2 of the final drive, is bolted to the differential. The countershaft (output shaft) is the other 1/2 of the final drive.

For simplicity, yes, Si gearing with a 4.9 would be best.

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PostPosted: Tue Feb 24, 2015 7:12 pm 
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ILIKETODRIVE. thanks
Looks like I have some homework to complete..
i'll work on getting this transmission sorted out.

Thanks for everyone's input...


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