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[Datsun 1200 encyclopedia]

6-speed

(Difference between revisions)

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Categories: Transmission Modifications | Transmission

Revision as of 11:05, 16 October 2016
ddgonzal (Talk | contribs)
(->FS6R31A)
<- Previous diff
Current revision
ddgonzal (Talk | contribs)
(->Pilot Bushing)
Line 5: Line 5:
= Aisin AZ6 = = Aisin AZ6 =
6-speed with A-series bell grafted on 6-speed with A-series bell grafted on
-<br><img size=400>http://datsun1200.com/uploads/photos/19983.jpg</img> [http://datsun1200.com/modules/myalbum/photo.php?lid=19983 album]+<br>{{Album|19983}}
 + 
 + Nissan
 + R30A 81-series gearset 285 Nm
 + R31A 85-series gearset 450 Nm
The basic Aisin AZ6 gearbox was made in several versions, with front cases for these engines: The basic Aisin AZ6 gearbox was made in several versions, with front cases for these engines:
-* Nissan '''FS6R30A''' (source: Nissan pickup 2005-)+* Nissan '''FS6R30A''' (source: Nissan pickup 2004-)
* Nissan '''FS6R31A''' for SR20DET (source: S15) * Nissan '''FS6R31A''' for SR20DET (source: S15)
-* Nissan '''FS6R31A''' for VQ35 (source: Z33)+* Nissan '''FS6R31A''' for VQ35 (source: Z33 "350Z")
-* Nissan '''FS6R92A''' for VQ35 (source: G35)+* Nissan '''FS6R92A''' for VQ35 (source: G35) 130 lbs weight
* Nissan '''FS6R92A''' for SR20 (source: S15) * Nissan '''FS6R92A''' for SR20 (source: S15)
* Mazda Renesys (RX8 rotary) * Mazda Renesys (RX8 rotary)
Line 19: Line 23:
* Subaru BRZ * Subaru BRZ
-http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/comparison-AZ6.jpg+{{Photo!|comparison-AZ6.jpg}}
A limited run was produced of custom front cases for Toyota T-50 bellhousing, so with this gearbox a [[Dellow]] kit might work to mate it to the A-series engine. A limited run was produced of custom front cases for Toyota T-50 bellhousing, so with this gearbox a [[Dellow]] kit might work to mate it to the A-series engine.
Line 26: Line 30:
= FS6R31A = = FS6R31A =
-Nissan RWD six-speed is plentiful in wrecking yards and inexpensive new ($1800). Use an adapter plate and a automatic bell housing and bob's your uncle.+Nissan sells {{search|Nissan+350Z+transmission|brand-new 350Z 6-speeds for $1700-$2000}} (MSRP of $2300, so shop around. Your local Nissan dealer may charge the full price, but other dealers are selling for under $1800 as of June 2022).
 + 
 +Nissan RWD six-speed is plentiful in wrecking yards and inexpensive new ($1800) or used ($900). Use an adapter plate and bob's your uncle. Reportedly 3x stronger than an SR20DET 5-speed. It is a true direct-fifth gearbox + overdrive.
* Z33 "350Z" 2003- * Z33 "350Z" 2003-
Line 33: Line 39:
{{Album|7054}} {{Album|7054}}
- 1st 3.794+ FS6R31A [[F5C56A]]
- 2nd 2.324+ 1st 3.794 3.757
- 3rd 1.624+ 2nd 2.324 2.374
- 4th 1.271+ 3rd 1.624 1.659
- 5th 1.000+ 4th 1.271 1.291
- 6th 0.794+ 5th 1.000 1.000
- Rev 3.446+ 6th 0.794 --
 + Rev 3.446 4.046
= S15 6-speed = = S15 6-speed =
Line 45: Line 52:
S15 modified; A-series bell grafted on S15 modified; A-series bell grafted on
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=19983 http://datsun1200.com/uploads/photos/thumbs/19983.jpg]+<br>{{Album|19983}}
* FS6R92A * FS6R92A
Line 77: Line 84:
* 32202-B9500 BUSHING-CRANKSHAFT * 32202-B9500 BUSHING-CRANKSHAFT
* used on L, Z, VG, VQ, SR, KA, and CD engines (same as 71C bushing) * used on L, Z, VG, VQ, SR, KA, and CD engines (same as 71C bushing)
-* Pilot Bushing Inside Diameter: 0.626 to .6300' (Length: .689')+* Pilot Bushing Inside Diameter: 0.626 to .6300 inch (Length: .689")
-* Pilot Bushing Outside Diameter: .814 to .815'+* Pilot Bushing Outside Diameter: .814 to .815"
-Since this is much larger in diamter than the A-series, machining is needed.+Since this is much larger in diameter than the A-series, machining is needed.
-A-series crankshaft bore is for a bushing with 0.671' O.D., length .723'+A-series crankshaft bore is for a bushing with 0.671" O.D., length .723"
* The FS6R92A input shaft end can be turned down to ~.671 O.D. * The FS6R92A input shaft end can be turned down to ~.671 O.D.
-* Could the A-series crank pilot hole be bored out to .814' so the 71-Series bush can be fitted?+* Could the A-series crank pilot hole be bored out to .814" so the 71-Series bush can be fitted?
Input shaft end turned down to smaller diameter Input shaft end turned down to smaller diameter
-<br>[http://i362.photobucket.com/albums/oo69/1600dave/6%20speed%20box/s15shaft.jpg http://i362.photobucket.com/albums/oo69/1600dave/6%20speed%20box/th_s15shaft.jpg]+<br>{{PB2|oo69|1600dave|6%20speed%20box|s15shaft.jpg}}
== Clutch Disc == == Clutch Disc ==
Line 113: Line 120:
Comparision of Nissan 6-speed with long-5-speed and short 4-speed. The location of the shifter is close to the location of [[stumpy]] gearbox shifter. Comparision of Nissan 6-speed with long-5-speed and short 4-speed. The location of the shifter is close to the location of [[stumpy]] gearbox shifter.
-[http://i362.photobucket.com/albums/oo69/1600dave/6%20speed%20box/top.jpg http://i362.photobucket.com/albums/oo69/1600dave/6%20speed%20box/th_top.jpg] [http://i362.photobucket.com/albums/oo69/1600dave/6%20speed%20box/side.jpg http://i362.photobucket.com/albums/oo69/1600dave/6%20speed%20box/th_side.jpg]+{{PB2|oo69|1600dave|6%20speed%20box|top.jpg}} {{PB2|oo69|1600dave|6%20speed%20box|side.jpg}}
== Rear Crossmember == == Rear Crossmember ==
 +Use a generic crossmember to fit a 6-speed.
 +
 + {{SeeMainArticle|Wide gearbox crossmember|18458}}
== Propeller Shaft == == Propeller Shaft ==
Line 121: Line 131:
6-speed vs 71C long vs 71B long vs F4W63 [[stumpy]] 6-speed vs 71C long vs 71B long vs F4W63 [[stumpy]]
-<br>[http://i362.photobucket.com/albums/oo69/1600dave/6%20speed%20box/allfour.jpg http://i362.photobucket.com/albums/oo69/1600dave/6%20speed%20box/th_allfour.jpg]+<br>{{PB2|oo69|1600dave|6%20speed%20box|allfour.jpg}}
= Toyota J160 = = Toyota J160 =
Line 127: Line 137:
Aisin AZ6 with custom front case for T-50 removable bell housing. A custom input shaft is used. Aisin AZ6 with custom front case for T-50 removable bell housing. A custom input shaft is used.
-<br>[http://i79.photobucket.com/albums/j143/oldeskewltoy/AZ6/finished2010.jpg http://i79.photobucket.com/albums/j143/oldeskewltoy/AZ6/th_finished2010.jpg]+<br>{{PB2|j143|oldeskewltoy|AZ6|finished2010.jpg}}
- +
Toyota J160 dimensions Toyota J160 dimensions
Line 138: Line 147:
[[Category:Transmission_Modifications]] [[Category:Transmission_Modifications]]
-[[Category:Transmission]]+[[Category:Transmission]]{{End}}

Current revision

6-speed transmission gives you two (count 'em 2) overdrive gears. Or some have a close ratio direct-5th with overdrive, which is better for performance. 6-speeds can be modified to fit Datsun 1200. Just cut the bellhousing and weld on a fragment of A-series bell housing, then machine the input shaft smaller.

Contents

Aisin AZ6

6-speed with A-series bell grafted on
19983.jpgAlbum 19983

Nissan
R30A  81-series gearset 285 Nm
R31A  85-series gearset 450 Nm

The basic Aisin AZ6 gearbox was made in several versions, with front cases for these engines:

  • Nissan FS6R30A (source: Nissan pickup 2004-)
  • Nissan FS6R31A for SR20DET (source: S15)
  • Nissan FS6R31A for VQ35 (source: Z33 "350Z")
  • Nissan FS6R92A for VQ35 (source: G35) 130 lbs weight
  • Nissan FS6R92A for SR20 (source: S15)
  • Mazda Renesys (RX8 rotary)
  • Mazda Y16M-D F & B (1999-2005 MX-5)
  • Toyota J160 for 1G & 3S (E10 Toyota Altezza/Lexus IS200)
  • Toyota 86/Scion FR-S
  • Subaru BRZ

comparison-AZ6.jpg

A limited run was produced of custom front cases for Toyota T-50 bellhousing, so with this gearbox a Dellow kit might work to mate it to the A-series engine.

But other wise, use the Cut-n-Shut method.

FS6R31A

Nissan sells brand-new 350Z 6-speeds for $1700-$2000 (MSRP of $2300, so shop around. Your local Nissan dealer may charge the full price, but other dealers are selling for under $1800 as of June 2022).

Nissan RWD six-speed is plentiful in wrecking yards and inexpensive new ($1800) or used ($900). Use an adapter plate and bob's your uncle. Reportedly 3x stronger than an SR20DET 5-speed. It is a true direct-fifth gearbox + overdrive.

  • Z33 "350Z" 2003-
  • 2005- six-cylinder Frontier, Xterra, Pathfinder

7054.jpgAlbum 7054

FS6R31A    F5C56A
1st 3.794  3.757
2nd 2.324  2.374
3rd 1.624  1.659
4th 1.271  1.291
5th 1.000  1.000
6th 0.794  --
Rev 3.446  4.046

S15 6-speed

The 1999-2002 Nissan Silvia S15 Strawberry with SR20DE/SR20DET had an optional close-ratio 5-speed + overdrive (6 forward speeds total). In AUS, the six-speed was in the Nissan 200SX Spec-R model.

S15 modified; A-series bell grafted on
19983.jpgAlbum 19983

  • FS6R92A
  • only 16kg heavier than a standard 1200 4spd
  • Close ratio 1-5, with overdrive 6th. It is perhaps the best ratios for an A-series engine

Gear Ratio

Comparison with A-series 5-speeds

.model. First. Second Third. Fourth Fifth. Sixth. Reverse
FS6R92A 3.6264 2.2000 1.5412 1.2132 1.0000 0.7674
F5C56A. 3.757. 2.374. 1.659. 1.254. 1.0000 ------ 4.04 
F5C56Ac 2.676. 1.691. 1.398. 1.181. 1.0000 ------ 2.877
FS5W60L 3.513. 2.170. 1.378. 1.0000 0.846. ------ 3.764
FS5W63A 3.382. 2.013. 1.312. 1.0000 0.854. ------ 3.57


Comparison with S14 5-speed

.model. First. Second Third. Fourth Fifth. Sixth. Reverse
FS6R92A 3.6264 2.2000 1.5412 1.2132 1.0000 0.7674


Comparision of various Aisin AZ6 models:

FS6R92A First. Second Third. Fourth Fifth Sixth. 
Silvia. 3.6264 2.2000 1.5412 1.2132 1.000 0.7674
RX8.... 3.760. 2.269. 1.645. 1.187. 1.000 0.843. 
MX5 99. 3.760. 2.269. 1.645. 1.257. 1.000 0.843.
RS200.. 3.874. 2.175. 1.484. 1.223. 1.000 0.869.

Pilot Bushing

S15 5-speed FS6R92A

  • 32202-B9500 BUSHING-CRANKSHAFT
  • used on L, Z, VG, VQ, SR, KA, and CD engines (same as 71C bushing)
  • Pilot Bushing Inside Diameter: 0.626 to .6300 inch (Length: .689")
  • Pilot Bushing Outside Diameter: .814 to .815"

Since this is much larger in diameter than the A-series, machining is needed.

A-series crankshaft bore is for a bushing with 0.671" O.D., length .723"

  • The FS6R92A input shaft end can be turned down to ~.671 O.D.
  • Could the A-series crank pilot hole be bored out to .814" so the 71-Series bush can be fitted?

Input shaft end turned down to smaller diameter
s15shaft.jpg

Clutch Disc

FS6R92A clutch disc [all 240mm]

  • 30100-85F00 9901-0011
  • 30100-85F14 0011-
  • Spline O.D.: 1'
  • Spline: 24 teeth

There is an A-series clutch disc that is 1' x 24T: 30100-K0500.

Input Shaft Length

How far does the FS6R92A input shaft extend past the transmission face?

  • 5-speed: about 17mm past the flange
  • 6-speed: about 10mm inside the flange

Speedometer

S15 6-speed does not have a speedometer gear.

Clutch Release

How to connect up the clutch?

Gearshift Location

Comparision of Nissan 6-speed with long-5-speed and short 4-speed. The location of the shifter is close to the location of stumpy gearbox shifter.

top.jpg side.jpg

Rear Crossmember

Use a generic crossmember to fit a 6-speed.

See Main Article: Wide gearbox crossmember
18458.jpg

Propeller Shaft

The 6-speed overall length is greater than a stumpy gearbox, but not as long as a a longtail Nissan transmission.

6-speed vs 71C long vs 71B long vs F4W63 stumpy
allfour.jpg

Toyota J160

A limited run was produced of custom front cases for Toyota T-50 bellhousing, so with this gearbox a Dellow kit might work to mate it to the A-series engine.

Aisin AZ6 with custom front case for T-50 removable bell housing. A custom input shaft is used.
finished2010.jpg

Toyota J160 dimensions

overall length: 740mm (not counting shifter)
* including shifter: 870mm
length front case: 270mm
length gear case: 190mm
length tail housing: 28mm 
¤