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Supra V160 Getrag Conversion

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Old 06-14-2012, 06:55 PM
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Originally Posted by 99SH
2 questions for you guys.

1. Seems like the Toyota VSS runs off 12V, while the S2k is 5V. Are we feeding a 12V input to our ECU/cluster using the speedohealer?
2. Using the V160 + stock diff, what is the difference driveshaft length?
1) I haven't been able to test it on the road yet, and it might be some time before I do. But the way I have it wired up is the Toyota VSS gets 12V. As far as voltage to the cluster, I believe all the speedohealer does is sends pulses to the cluster and it's interpreted in the cluster. So I'm assuming by calibrating the speedohealer, it will reduce or increase the voltage and counts sent out of it. I had a multimeter on the signal out and never saw over 5V.

2) BrockB is the only one that I know of that has the V160 going to the Puddymod diff, so he would be the person to ask for the length
Old 06-14-2012, 07:24 PM
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Thanks for the reply. The speedohealer will only adjust the frequency of the pulse waveform, with the amplitude being your source voltage (+12V in this case). Since our ECU & cluster operates at +5V, I'd be very anxious overdriving it with a 12V input.

If/when I get this v160 conversion, I'll be sure to cap the voltage at 5V. There are many ways to do this by either using the common 2N2222 transistor driven by a +5V input for Vcc with the Speedohealer output driving the Gate. Or you can use a +5.1V high-speed zener diode to cap the 12V amplitude. There are also many TTL buffers you can buy to drive-down the 12V output to 5V.
Old 06-14-2012, 07:35 PM
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That makes sense. Sorry, I've been driving for 12 hours straight. Another way I've thought of wiring it up, is to use the +5v from the original harness wire up to the speedohealer and still supply the vss with +12v but was going try it out as I have it wired now. The self test in the speedohealer seems to be working and displays on the cluster properly
Old 06-14-2012, 07:43 PM
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That's a great idea, never thought of wiring it that way. That should work perfect!
Old 06-15-2012, 11:08 AM
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I should be trying this out next week along with the trans install, I'll report back then, oh and big thanks to cd7siraccord for helping me out
Old 06-15-2012, 11:58 AM
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Since the VSS in the Supra transmission is probably a dumb hall-effect or similar sensor, you could always try feeding it 5V. You may find there's nothing tricky required...

Tim
Old 06-15-2012, 12:16 PM
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Originally Posted by passmans2kny
I should be trying this out next week along with the trans install, I'll report back then, oh and big thanks to cd7siraccord for helping me out
Anytime.

So I had about another 5 hours to think about this while I was still driving home. If the VSS is giving out a modified +12v signal, you would have to clamp the signal out to the cluster right? Which then it wouldn't make a difference where you powered the Speedohealer with either +5V or +12V. Unless the speedohealer outputs the signal with the same voltage it's powered by. But do you think it also could clamp voltage through the calibration? Postab0y said his initial calibration was around 3560%, looking at correction values on the speedohealer it seems like a lot to go that high.
Old 06-15-2012, 12:22 PM
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Originally Posted by timg
Since the VSS in the Supra transmission is probably a dumb hall-effect or similar sensor, you could always try feeding it 5V. You may find there's nothing tricky required...

Tim
It's been a month or two but I think I tried that and didn't get any trigger pulses on the speedohealer. Can't really remember though, I've slept since then. lol
Old 06-15-2012, 03:14 PM
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Originally Posted by CD7SirAccord
Originally Posted by passmans2kny' timestamp='1339787287' post='21784987
I should be trying this out next week along with the trans install, I'll report back then, oh and big thanks to cd7siraccord for helping me out
Anytime.

So I had about another 5 hours to think about this while I was still driving home. If the VSS is giving out a modified +12v signal, you would have to clamp the signal out to the cluster right? Which then it wouldn't make a difference where you powered the Speedohealer with either +5V or +12V. Unless the speedohealer outputs the signal with the same voltage it's powered by. But do you think it also could clamp voltage through the calibration? Postab0y said his initial calibration was around 3560%, looking at correction values on the speedohealer it seems like a lot to go that high.
The Speedohealer should output the modified VSS signal at the amplitude of the input voltage (+12V). I have no reason to believe it will clamp the voltage to 5V thru calibration. The VSS output from the tranny is merely used as a trigger and does not determine the output voltage from the Speedohealer.

FYI the Yellow Box operates at 5V.
http://www.yellr.com/
Old 06-16-2012, 08:50 AM
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Originally Posted by CD7SirAccord
If anyone is buying a new V160, I've compiled a parts list new from Toyota, that you will need to complete this swap.

This is the cheapest place online that I have found these parts: https://www.1sttoyotaparts.com/

Here is a diagram of the stock shifter and mount.


Shifter Assembly:
33530-14442 - 93.5-95 Shifter Assembly
33555-14100 - Upper dust boot (optional)*Will need to trim Full Blown Bracket to fit*
93381-16016 - Screws with Washers (4 are needed)
33556-14050 - Seat for shift lever ball
90387-08134 - Collar for shift lever and linkage (2 are needed)
90301-11015 - O-rings for collar (4 are needed)
90105-08200 - Bolt for linkage and shift lever (2 are needed)
90179-08095 - Nut for bolts (2 are needed)
33513-22030 - Yoke for Linkage and shift lever
33531-14010 - Dust boot (Optional) *You will have to modify this for the linkage to pass through*
90467-21010 - Retaining clamp
90250-06026 - Pin for linkage

Transmission Mount:
12371-46110 - OEM transmission mount
90179-08159 - Nut (4 are needed)

*Optional*
12371-JA800 - TRD urethane tranmission mount *Google part # for other sources to purchase ranging from $85-100*
31123-14020 - Inspection Cover *Driver's side will need to be modified for clutch lines*
31121-14030 - Inspection Cover
90080-11228 - Bolts for inspection covers (4 are needed)
08885-01306 - Toyota V160 Transmission fluid (2 cans required, need 1.8 liters transmission fluid to fill transmission)

The shift knob will not work from your S2000 as it is a 10X1.50 and Toyota is 12X1.25

Hope this helps

Cheers
Also need to add the V160 VSS with a new tranny as well, correct? Happen to have the part #?

Edit: found the p/n for the connector plug & pins
90980-11143 Connector List 6.63 Cost 5.01
82998-12440 Terminal, List 5.09 Cost 3.76 Ea X 3


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