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[Datsun 1200 encyclopedia]

6-speed

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Categories: Transmission Modifications | Transmission

Revision as of 07:06, 2 January 2012
ddgonzal (Talk | contribs)
(->S15 6-speed)
<- Previous diff
Current revision
ddgonzal (Talk | contribs)
(->Pilot Bushing)
Line 1: Line 1:
-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. +{{Transmission_Navbox}}
-= S15 6-speed =+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.
-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.+
-Like most Nissan RWD transmissions, this is made by [[Aisin]]. The basic Aisin AZ6 gearbox was made in three versions, with front cases for these engines:+= Aisin AZ6 =
-* Nissan SR20DET (S15)+6-speed with A-series bell grafted on
 +<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:
 +* 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 Renesys (RX8 rotary)
-* Mazda F & B (S2000 and 2001 MX-5)+* Mazda '''Y16M-D''' F & B (1999-2005 MX-5)
-* Toyota 1G, 3S (SXE/GXE10 Toyota Altezza & Lexus IS)+* Toyota '''J160''' for 1G & 3S (E10 Toyota Altezza/Lexus IS200)
 +* Toyota 86/Scion FR-S
 +* Subaru BRZ
 +{{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.
 +
 +But other wise, use the [[Transmission_Swaps#Cut_.26_Shut|Cut-n-Shut method]].
 +
 += FS6R31A =
 +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-
 +* 2005- six-cylinder Frontier, Xterra, Pathfinder
 +
 +{{Album|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 S15 modified; A-series bell grafted on
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=19983 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/19983.jpg]+<br>{{Album|19983}}
* FS6R92A * FS6R92A
Line 18: Line 58:
* Close ratio 1-5, with overdrive 6th. It is perhaps the best ratios for an A-series engine * Close ratio 1-5, with overdrive 6th. It is perhaps the best ratios for an A-series engine
-== Gear Ratios ==+== Gear Ratio ==
-* 1st: 3.630 +Comparison with A-series 5-speeds
-* 2nd: 2.200 + .model. First. Second Third. Fourth Fifth. Sixth. Reverse
-* 3rd: 1.543 + FS6R92A 3.6264 2.2000 1.5412 1.2132 1.0000 0.7674
-* 4th: 1.210 + F5C56A. 3.757. 2.374. 1.659. 1.254. 1.0000 ------ 4.04
-* 5th: 1.000 + F5C56Ac 2.676. 1.691. 1.398. 1.181. 1.0000 ------ 2.877
-* 6th: 0.767+ 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 == == Pilot Bushing ==
Line 30: 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"
Line 39: Line 93:
* 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
 +<br>{{PB2|oo69|1600dave|6%20speed%20box|s15shaft.jpg}}
== Clutch Disc == == Clutch Disc ==
Line 44: Line 100:
* 30100-85F00 9901-0011 * 30100-85F00 9901-0011
* 30100-85F14 0011- * 30100-85F14 0011-
-* Spline O.D.: 1"+* Spline O.D.: 1'
* Spline: 24 teeth * Spline: 24 teeth
-There is an A-series clutch disc that is 1" x 24T: [[63-Series_Transmission#Clutch|30100-K0500]].+There is an A-series clutch disc that is 1' x 24T: [[63-Series_Transmission#Clutch|30100-K0500]].
== Input Shaft Length == == Input Shaft Length ==
Line 62: Line 118:
== Gearshift Location == == 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.
 +
 +{{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 ==
 +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]]
 +<br>{{PB2|oo69|1600dave|6%20speed%20box|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.
 +<br>{{PB2|j143|oldeskewltoy|AZ6|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
-[[Category:Transmission]]+[[Category:Transmission_Modifications]]
 +[[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 
¤