91 si trans on sohc zc

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Old Jul 13, 2012 | 02:19 PM
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Default 91 si trans on sohc zc

my crx has a sohc zc in it and i found out the hard way today that my trans had a slow leak in it... well i have a 91 si trans sitting in my garage and im curious what i need to do to use it on my zc. i have found info in the z6 which is the same years which says i can use the clutch, flywheel and everything else from the z6 but i need the throwout bearing from the 91. is this true for the d16zc. please help my dd is down and i live 15 miles from work.

thanks for any help
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Old Jul 13, 2012 | 02:21 PM
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Default Re: 91 si trans on sohc zc

If it's an axle seal, just replace it.
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Old Jul 13, 2012 | 02:29 PM
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Default Re: 91 si trans on sohc zc

na i found out the hard way by driving down the road and hearing some pretty funky clunking noises. put it in neutral and still was hearing stuff and when i got stopped it stalled out. i pushed the clutch in and started it and as soon as i let the clutch out even in neutral it stalls out like im in gear and not giving gas to start.... also if its in neutral i cant push it so it is currently a few miles from my house on the side of the road
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Old Jul 13, 2012 | 04:28 PM
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Default Re: 91 si trans on sohc zc

So wait, just to figure it out correctly. You're wanting to use parts from the Si Tranny on the sohc zc tranny you have currently in your car?

How complete is the si tranny? I would just say use the si tranny IMO, but just answer the above question.
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Old Jul 13, 2012 | 06:45 PM
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Default Re: 91 si trans on sohc zc

im wanting to use the whole si trans in my car with the zc. im just wondering cause the si is cable and the sohc zc from 95 so its hydro. atleast i thought anything 92 and over is hydro.
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Old Jul 13, 2012 | 07:28 PM
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Default Re: 91 si trans on sohc zc

Originally Posted by GPC91
im wanting to use the whole si trans in my car with the zc. im just wondering cause the si is cable and the sohc zc from 95 so its hydro. atleast i thought anything 92 and over is hydro.
I don't know the year ranges for the different zc transmissions, honestly it's too hard to remember the differences between the Japanese **** when they have basically the same name ffs. I hate that. Or people tend to not use defining descriptions of said items.


92+ should all be hydro, not sure of any that are NOT. I'm guessing you definitely didn't do the swap since you don't know.

Your si tranny will mate up fine with the zc sohc... Just remove whatever hydro **** you have installed and drop in the si tranny. It's butt-****ingly simple. The axles (as well as the hubs) may (you need to search to see what you need, i forget) need to be changed, I forget the spline count off the top of my head but if you search you'll see what you need.
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Old Jul 16, 2012 | 07:59 AM
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Default Re: 91 si trans on sohc zc

Unless your crx is converted to hydro you can bolt the si trans right in, zc.and si trans are exactly the same for cable zc and cable si. The hydro si is probably the same as a hydro zc, if its still good all you need is the tob. Everything else is the same.

I mean fully converted not the converter plate thing off eBay
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Old Oct 2, 2012 | 11:34 AM
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Default Re: 91 si trans on sohc zc

Is the zc flywheel the same one the d16a6 uses?
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Old Oct 2, 2012 | 04:01 PM
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Default Re: 91 si trans on sohc zc

idk if its the same but i havent had a problem with the 91 trans in my car for the last 3 months. everything works fine for me.
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Old Oct 2, 2012 | 10:21 PM
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Default Re: 91 si trans on sohc zc

i just bought a 90-91 sohc non vtec zc motor today & the flywheel looks pretty good... im hoping to use it just gotta be sure it will work with my si trans...
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Old Oct 3, 2012 | 09:05 AM
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Default Re: 91 si trans on sohc zc

honestly i dont know because i bought my car with the zc vtec in it and after taking out my old trans it was actually already a 90 si trans. so the guy before me either kept the a6 flywheel, got a new one, or the old one worked with it. ha i know this doesnt help at all. since those are pretty much all the options one has. just make a post called "what flywheel for a sohc zc non-vtec to use 91 si trans" i wish i could help you more but im still new to alot of this as well. if you already have the a6 in your car you can just take the flywheel off of that and im like 95% sure it will bolt right on to your new d16 since alot of that stuff is transferable on d series.
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