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Do you have a Nissan Skyline, that the brake lights stay on, even with the car off? If you do, there is probably an easy and inexpensive fix.
It is a common Nissan problem. There is a little stopper, that depresses the brake light switch, when your foot is off the brake pedal. When the little stopper gets old, and falls apart, the brake pedal switch turns the brake lights on.
According to FAST, the correct part number for the brake light stopper, and clutch pedal stopper is 46512-H0101. The red highlighted part here 46512. The correct parts are green, although we have also used part number 46584-S0100, which is clear.
There were two main transmissions used in the Nissan Skyline GT-R's from 1989-2002. The R32 and R33 used a 5 speed transmission from Nissan(FS5R30A), and the R34 GT-R used a 6 speed transmission from Getrag V160(FS6A93A). The FS5R30A is very similar to the 300ZX transmission internally. The Getrag is the same transmission as used in the Toyota Supra. The input shaft and main shaft are unique to the GT-R, the rest of the internal parts are interchangeable. R32/R33 has 4.111 gear ratio, the R34 has a 3.545 gear ratio. We have seen people running 4.3, 4.111, 3.7, and 3.54 on R32/R33/R34.
The Getrag is loud at idle. The synchros aren't that durable. Even though the Supra guys run them pretty hard, we break weird hard parts in them. They are a newer transmission and offer 6 speeds. The price on them is going up, but they are still a popular swap. Nissan Skyline GT-R Transmission and Upgrade information
Normal R32/R33
1 3.214
2 1.925
3 1.302
4 1.000
5 .752
275/40/17 -
46 mph
77mph
114 mph
148 mph
197 mph
RPM Drop on 8000 shift
8000 rpm
4750 rpm
5400 rpm
6250 rpm
6000 rpm
Final Ratio - 4.111
Normal R34
1.3.827
2. 2.360
3. 1.685
4. 1.312
5 1.000
6 0.793
245/40/18
45 mph
73 mph
102 mph
131 mph
172 mph
217 mph
Final Ratio- 3.545
OEM transmission length
FS5R30A
Bellhousing to Flange
38.5 inches
Getrag FS6R93A
Bellhousing to Flange
39.5 inches
Parts Needed
Nissan/Nismo says that the R32 body/chassis needs to be slightly modified to fit the Getrag. We have put several in cars, and not had to alter anything. However we have talked to people that have had issues, from the firewall to right behind where the transfercase is mounted. So it may take a 5 lb sledge to "clearance" some cars.
Complete Getrag swap for an R32/R33 GT-R.
Getrag transmission with clutch release assembly
Transfercase (bolt pattern and input shaft are different)
Shifter assembly
Driveshaft (you can get by with changing one section)
Front propshaft (different length)
Clutch (OEM R34 is pull type)
Crossmember (the OEM R32/R33 can be modified to work)
Transmission mount (R32/R33 and R34 are different bolt spacing)
Wiring harness changes (reverse and netural)
Various bolts
Specific fluid
#1 The transmission itself, with proper bellhousing.
Transfercase - The Getrag uses a specific transfercase, so you can't just reuse the one off your R32/R33.
R34 race car transfercase with cooling. Notice no wire to speed sensor
Dirty Getrag with transfercase. They can often puke fluid out of the transfercase.
#3
Shifter assembly. Obviously the 6 speed shifter and knob is different than the 5 speed.
Wires, wires everywhere.
#4
Driveshaft - The R32/R33/R34 use a two piece driveshaft. You can get by, with just changing one section of the shaft.
Top is a Nissan Skyline factory driveshaft. The bottom is a carbon fiber for a GMC Syclone/Typhoon
#5
Front propshaft - The length is different between the R32/R33 and R34. R32/R33 flange to flange, not overall length is 27 inches. The R34/Getrag flange to flange is 28 inches.
This Getrag has been converted to push style clutch actuation.
R34/Getrag front propshaft 28 inches flange to flange. One inch longer than an R32/R33 propshaft
R34/Getrag front propshaft 28 inches flange to flange
#6
Clutch - The OEM clutch is a pull style clutch. Most aftermarket clutches are push style. Most. The exceptions being Exedy/NISMO. Push vs Pull Clutch information
This Getrag is in process of getting converted from pull to push actuation
Getrag throwout converted to push style clutch actuation
Getrag with a hydraulic release bearing
#7
Crossmember. You can swap the crossmember if you want, or just modify your OEM one. Two bolt holes, slightly different spot.
Now if I remembered which was which....
#8
Transmission mount- See above
#9
Wiring harness changes - The plugs are different. The circuit is pretty basic. We will find the proper diagram and put it here eventually.
#10
Various bolts - Some are different.
#11
Specific Fluid - Don't try and fill it through the gear shifter. Through the gear shifter is the transfer case .
Everything is pretty straightforward. Remove the old transmission, install the Getrag. If you have all the right parts it should go smoothly. We have seen NISMO mention that the floor needs some hammering, but we didn't run into that issue in the R32 GT-R's that we have done. The recommended gear ratio is 3.7. Splitting the difference between the R32/R33 4.111 and the R34 3.545. If you have ever seen the Mines R34 getting down on video, we think that car is running the Getrag with 4.3 gears. Using some mechanical advantage.
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