04-19-2024 | #1 |
Join Date: Jan 2024
Location: Boston, MA
Posts: 179
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Driveshaft removal for speedo gear swap. C-Beam out or not?
My 94 still has the stock speedometer/vss gear in the transmission even though the D44 has 4.10 gears installed. I have the 13/43 gear from Haibeck to install but wanted to ask a quick question.
His instructions are here: http://www.zr1specialist.com/HAT%20W...on%20Gears.htm It goes right from remove the exhaust to remove the driveshaft. Is there enough tunnel space to remove the U-Joint strap bolts and get the driveshaft out without also removing the C-Beam? There really isn't in enough room in my '87, but that is an L98 and DN4+3 setup which may be a little different back there. If I have to remove it that's fine, just curious what to expect. Thank you. |
04-19-2024 | #2 |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,653
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
It's really tight in there, not a lot of wiggle room between the driveshaft and the c-beam.
Not to say that it's impossible to extract the driveshaft without removing the c-beam, but I'd be really really surprised if you could. I've never tried. I could let you know in a couple of weeks, am installing a short shifter on my ZF-6 and everything I've seen says I've got to drop the exhaust. Once I've done that I'll be able to take some highly accurate (and highly questionable) measurements. Crabs
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TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B] |
04-19-2024 | #3 |
Join Date: Feb 2023
Location: Albany, Oregon
Posts: 35
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
My experience with removing the drive shaft is that it is easier to remove the C beam bolts and move the rear of the C beam over. It can depend on your car as there are some production variations and some it maybe possible to get the driveshaft out with the C beam in place. You can always try first once you get the exhaust out and see if you can find a position that will allow the drive shaft to come out.
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04-19-2024 | #4 |
Join Date: Jul 2020
Location: Nashville TN
Posts: 321
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
I have had the driveshaft out many times but never without sliding the c-beam back. It is a pretty easy job but I do have a lift.
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04-20-2024 | #5 |
Join Date: May 2010
Location: Japan
Posts: 3,582
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
While you are at it I recommend you just get a set of C beam plates and install at the same time. It is not difficult to move the C beam out of the way if needed.
http://www.zfdoc.com/c4beamplate.htm
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Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048 |
04-20-2024 | #6 |
Join Date: Jan 2024
Location: Boston, MA
Posts: 179
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
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04-20-2024 | #7 |
Join Date: Jul 2004
Location: Kalamazoo MI
Posts: 1,743
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
Damn what am I doing? I've never had to move the c beam to get out a drive shaft in or out.
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JOHNNY P Currently own 90 ZR-1 #845 DRM 500 engine package 90 #226 Parts car Hit me up if you need anything. |
04-20-2024 | #8 |
Join Date: Jan 2024
Location: Boston, MA
Posts: 179
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
Share your magical ways.
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1987: Z51 Coupe, Z51, 4+3, Yellow / Graphite 1994: ZR-1 #150, Admiral Blue / Black 2015: Z06 Coupe, Z07, M7, Arctic White / Red |
04-20-2024 | #9 |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,653
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
Saws-all with a metal cutting blade?
Crabs
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TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B] |
04-20-2024 | #10 |
Join Date: Jul 2004
Location: Kalamazoo MI
Posts: 1,743
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Re: Driveshaft removal for speedo gear swap. C-Beam out or not?
I put transmission in neutral then pop rear u joint out of the rear, slide yoke fwd to make room and turning the driveshaft so the ujoint end clears the rear end to the left and wiggle it out.
Sometimes I will loosen to parking brake cable frame mounts to get the cable out of the way. I just did this I had a rear main leaking and swapped my transmission. I should have made a video.
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JOHNNY P Currently own 90 ZR-1 #845 DRM 500 engine package 90 #226 Parts car Hit me up if you need anything. Last edited by phrogs; 04-20-2024 at 11:53 AM. |
Tags |
4.10, gear, speedo, vss |
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