View source for BW78

[[Australian-assembled]] B110s and B210s used a [http://en.wikipedia.org/wiki/Borg_Warner Borg Warner] rear axle assembly. These use a 'Salisbury' type differential, where the gears are embedded into the axle housing. Other B110s used the Hitachi [[Differential]], with a removable &quot;pumpkin&quot; gear center-section. Also some [https://web.archive.org/web/http://datsun1200.com/modules/newbb/viewtopic.php?post_id=267397#forumpost267397 <sup>POST</sup> South Africa 1200s] were fitted with a BW differential. The Borg Warner 78 is a popular swap for 1200s in Australia.



<nowiki></nowiki>* B110: Borg Warner [[#Model_60|#Model 60]] 6&quot; ring gear * B210: Borg Warner [[#Model_68|#Model 68]] (8-bolt cover) 6.75&quot; * R31 Australia: BW [[#Model_78|#Model 78]] (9-bolt cover)







<span id="Model_60"></span>



<span id="model-60"></span>

= Model 60 =



[[Australian-assembled]] B110s used a Borg Warner Model 60 rear axle, starting in late 1971 with chassis numbers:



<nowiki></nowiki>* Manual serial number 54507 * Automatic serial number 40937



<span id="10059" class="imagepx" style="width:400px; rotate:0deg; ">[[File:10059.jpg|200px]]<span class="album_overlay">[[:File:10059.jpg|Album 10059]]</span></span> <span id="14032" class="img_height" style="height:271px;">[[File:14032.jpg|200px]]<span class="album_overlay">[[:File:14032.jpg|Album 14032]]</span></span>



Apparently this is the same diff that was in <span style="color:red;">[http://en.wikipedia.org/wiki/Australian_Motor_Industries Australian Motor Industries]ᵂ</span>-built Corolla KE10, but those have a 4 x 110 wheel bolt pattern.



Part Numbers * 38300-H1000BW Carrier &amp; Diff Assembly * 38310-G0400BW Carrier * 38315-G0400BW Bolt-carrier bearing



AXLE specs Seal: Plaseal 18557 Axle shaft diameter: 30mm Bearing O.D. 60mm



<span id="Wheel_Bearings"></span>



<span id="wheel-bearings"></span>

== Wheel Bearings ==



Kits with bearing, collar and oil seal [http://www.statewidebearings.com.au Statewide Bearings] kit 2742 Allied Automotive Parts kit KT2742_3



Kit 2742 contains: * bearing 411546R (30 x 62 x 21 mm) * R3 (206R) collar 29.85mm id 46mm od 9mm wide * oil seal



<span id="27108" class="imagepx" style="width:400px; rotate:0deg; ">[[File:27108.jpg|200px]]<span class="album_overlay">[[:File:27108.jpg|Album 27108]]</span></span>



Rear wheel bearing KIT 2742 * Datsun 1200 Borg Warner axle - for most B110 Series Sedans 1970-1974 * Datsun 120Y Borg Warner axle 1974-1975 * CAPRI RWD 1972-1974 (Excluding Salisbury diff or V6) * CORTINA Mk11 1968-1973 (Excl Salisbury Diff) * ESCORT 1100,1300,1600, GT 1970-1976 * ESCORT TWIN CAM 1970-1971 * RS2000 MK11 1978-1982 * MkII 1976-1982 (Excluding RS 2000) * Austin MARINA Australian Production 1972-1975 * COROLLA KE30,KE35,KE36,KE38,KE50,KE55 Borg Warner rear axle 1974-1981 * CORONA RT40,RT41 Sedan Borg Warner rear axle 1965-1970



<span id="Model_68"></span>



<span id="model-68"></span>

= Model 68 =



Australian [[120Y]] 4-dr Sedans from July 1976 were locally assembled and used a Borg Warner rear axle assembly. (BW model M68). All were 3.889 ratio and have 23 spline axles. The 120Y Coupe, Wagon, and Panel Van, being fully imported into Australia, continued to use the Hitachi [[H150]] (Japan) rear-end in 3.9 ratio while the Van might have had a different [lower] ratio.



120Y Sedan (vertical [[Shock_absorbers|Shock absorbers]]) and [[Leaf_Springs|iso-clamps]]<br />

<span id="19445" class="imagepx" style="width:400px; rotate:0deg; ">[[File:19445.jpg|200px]]<span class="album_overlay">[[:File:19445.jpg|Album 19445]]</span></span>



South Africa sedan<br />

<span id="10915" class="imagepx" style="width:400px; rotate:0deg; ">[[File:datsun1200_10915.jpg|200px]]<span class="album_overlay">[[:File:10915.jpg|Album 10915]]</span></span>



<span id="3147" class="imagepx" style="width:400px; rotate:0deg; ">[[File:3147.jpg|200px]]<span class="album_overlay">[[:File:3147.jpg|Album 3147]]</span></span>



Cast ID on bottom<br />

<span id="13822_56514ccb9ec63.jpg" class="imagepx" style="width:px;  transform:rotate(0deg);">[[File:13822_56514ccb9ec63.jpg|200px]]<span class="album_overlay" style="color:; background:">[https://web.archive.org/web/http://datsun1200.com/modules/newbb/viewtopic.php?post_id=473891#forumpost473891 Post 473891]</span></span>



ID tag<br />

<span id="13822_56514cd8e24a5.jpg" class="imagepx" style="width:px;  transform:rotate(0deg);">[[File:13822_56514cd8e24a5.jpg|200px]]<span class="album_overlay" style="color:; background:">[https://web.archive.org/web/http://datsun1200.com/modules/newbb/viewtopic.php?post_id=473891#forumpost473891 Post 473891]</span></span>



BW: removable back cover (Salisbury type) | Japan: welded back cover (banjo type)<br />

<span id="18657" class="imagepx" style="width:400px; rotate:0deg; ">[[File:18657.jpg|200px]]<span class="album_overlay">[[:File:18657.jpg|Album 18657]]</span></span> <span id="1660" class="img_height" style="height:300px;">[[File:1660.jpg|200px]]<span class="album_overlay">[[:File:1660.jpg|Album 1660]]</span></span>



Width is 120Y standard: 1305 mm brake-to-brake.



M68 - 8-bolt cover (octagonal shaped)<br />

<span id="11404" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11404.jpg|200px]]<span class="album_overlay">[[:File:11404.jpg|Album 11404]]</span></span> <span id="11405" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11405.jpg|200px]]<span class="album_overlay">[[:File:11405.jpg|Album 11405]]</span></span> <span id="25513" class="imagepx" style="width:400px; rotate:0deg; ">[[File:25513.jpg|200px]]<span class="album_overlay">[[:File:25513.jpg|Album 25513]]</span></span> <span id="25514" class="imagepx" style="width:400px; rotate:0deg; ">[[File:25514.jpg|200px]]<span class="album_overlay">[[:File:25514.jpg|Album 25514]]</span></span>



BW can be identified as there is a rear cover (the diff [center] doesn't unbolt from the front of the axle housing - like a GM differential only smaller). There will be a metal tag on one of the bolts that holds the cover on. It tells you which type of Borg Warner, and also the ratio (makes life easy at the wreckers).



They say Borg Warner on the bottom.



* it will be a BW if it has a removable cover at the back of the diff

* if it doesn't have a removable cover, it is either a H150 or H145



The BW68 is the same width as a 1200 H145 diff, but have a different input flange, so you will also need the matching 120Y-BW tailshaft.



43000-H7A05-02 ???



This is the same differential in:<br />

* Australia-assembled KE70 [https://web.archive.org/web/http://datsun1200.com/modules/newbb/viewtopic.php?post_id=132374 Corollas]<br />

* some MKII Ford Escorts<br />

* some Cortina<br />

* AUS Mitsubishi [[Sigma]] 6.75 diff<br />

* Australia assembled Corona<br />

* TX and TC Gemini (australia-assembled)<br />

* South Africa-built Cressida<br />

* Escort RS2000 South Africa used an M68 LSD<br />

South Africa M68 Escort axles are called the Johannesburg axle.



Since the BW68 axle housings are a larger diameter, spring seats and U-bolts with wider spacings are used:<br />

<span id="11422" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11422.jpg|200px]]<span class="album_overlay">[[:File:11422.jpg|Album 11422]]</span></span> <span id="11423" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11423.jpg|200px]]<span class="album_overlay">[[:File:11423.jpg|Album 11423]]</span></span>



25-spline axles<br />

<span id="11425" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11425.jpg|200px]]<span class="album_overlay">[[:File:11425.jpg|Album 11425]]</span></span>



Click each photo for more detail



adapted Bluebird [[Rear_Disc_Brakes|Rear Disc Brakes]]<br />

<span id="17285" class="imagepx" style="width:400px; rotate:0deg; ">[[File:17285.jpg|200px]]<span class="album_overlay">[[:File:17285.jpg|Album 17285]]</span></span> <span id="18656" class="imagepx" style="width:400px; rotate:0deg; ">[[File:18656.jpg|200px]]<span class="album_overlay">[[:File:18656.jpg|Album 18656]]</span></span> <span id="18657" class="imagepx" style="width:400px; rotate:0deg; ">[[File:18657.jpg|200px]]<span class="album_overlay">[[:File:18657.jpg|Album 18657]]</span></span> <span id="18658" class="imagepx" style="width:400px; rotate:0deg; ">[[File:18658.jpg|200px]]<span class="album_overlay">[[:File:18658.jpg|Album 18658]]</span></span>



<span id="11424" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11424.jpg|200px]]<span class="album_overlay">[[:File:11424.jpg|Album 11424]]</span></span> <span id="11426" class="img_height" style="height:300px;">[[File:11426.jpg|200px]]<span class="album_overlay">[[:File:11426.jpg|Album 11426]]</span></span> <span id="11472" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11472.jpg|200px]]<span class="album_overlay">[[:File:11472.jpg|Album 11472]]</span></span> <span id="3147" class="imagepx" style="width:400px; rotate:0deg; ">[[File:3147.jpg|200px]]<span class="album_overlay">[[:File:3147.jpg|Album 3147]]</span></span>



Gearset removal<br />

<span id="13050" class="imagepx" style="width:400px; rotate:0deg; ">[[File:13050.jpg|200px]]<span class="album_overlay">[[:File:13050.jpg|Album 13050]]</span></span> <span id="13051" class="imagepx" style="width:400px; rotate:0deg; ">[[File:13051.jpg|200px]]<span class="album_overlay">[[:File:13051.jpg|Album 13051]]</span></span>



<span id="Bakkie"></span>



<span id="bakkie"></span>

== Bakkie ==



The 1400s use the M68, but with thicker sideshafts than those fitted to the 1200's M68.



173 mm (6.8&quot;) crown wheel (ring gear) 4.1 Ratio 43100-GG655 3.89 ratio 43100-HB801 035-08734 M 68 Ratio 3.89 <span id="16298" class="imagepx" style="width:400px; rotate:0deg; ">[[File:datsun1200_16298.jpg|200px]]<span class="album_overlay">[[:File:16298.jpg|Album 16298]]</span></span>



<span id="16299" class="imagepx" style="width:400px; rotate:0deg; ">[[File:datsun1200_16299.jpg|200px]]<span class="album_overlay">[[:File:16299.jpg|Album 16299]]</span></span>



<span id="Model_78"></span>



<span id="model-78"></span>

= Model 78 =



Australian-built [[R31]] Skyline/Pintara came with a Borg Warner 78 rear axle assembly, although fitted with M75 diff (7.5&quot;/190 mm crown wheel/ring gear). The ring gear (CRP) is strong, about as strong as the [[H190]] in the Datsun pickups.



<span id="10701" class="imagepx" style="width:400px; rotate:0deg; ">[[File:10701.jpg|200px]]<span class="album_overlay">[[:File:10701.jpg|Album 10701]]</span></span>



A unique feature is the 9-bolt rear cover.<br />

<span id="R31_BW78_Gasket.jpg" class="imagepx" style="display:inline-block; width:px;"><nowiki></nowiki>http://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/R31_BW78_Gasket.jpg<nowiki></nowiki></span>



Another unique feature is the 6-bolt flange:<br />

<span id="19237" class="imagepx" style="width:400px; rotate:0deg; ">[[File:19237.jpg|200px]]<span class="album_overlay">[[:File:19237.jpg|Album 19237]]</span></span>



Borg Warner M78 differential is also used by many other cars, but with different axle housings and brakes. Ex: 1987-1989 Chevrolet Camaro.



<span id="640" class="imagepx" style="width:400px; rotate:0deg; ">[[File:640.JPG|200px]]<span class="album_overlay">[[:File:640.JPG|Album 640]]</span></span> <span id="641" class="imagepx" style="width:400px; rotate:0deg; ">[[File:641.JPG|200px]]<span class="album_overlay">[[:File:641.JPG|Album 641]]</span></span> <span id="1202" class="imagepx" style="width:400px; rotate:0deg; ">[[File:1202.jpg|200px]]<span class="album_overlay">[[:File:1202.jpg|Album 1202]]</span></span>



Series II Silhouette LSD <span id="2263" class="imagepx" style="width:400px; rotate:0deg; ">[[File:2263.jpg|200px]]<span class="album_overlay">[[:File:2263.jpg|Album 2263]]</span></span>



[[Rear_Disc_Brakes|Rear Disc Brakes]]<br />

<span id="7213" class="imagepx" style="width:400px; rotate:0deg; ">[[File:7213.jpg|200px]]<span class="album_overlay">[[:File:7213.jpg|Album 7213]]</span></span> <span id="7214" class="imagepx" style="width:400px; rotate:0deg; ">[[File:7214.jpg|200px]]<span class="album_overlay">[[:File:7214.jpg|Album 7214]]</span></span> <span id="7215" class="imagepx" style="width:400px; rotate:0deg; ">[[File:7215.jpg|200px]]<span class="album_overlay">[[:File:7215.jpg|Album 7215]]</span></span> <span id="18391" class="imagepx" style="width:400px; rotate:0deg; ">[[File:18391.jpg|200px]]<span class="album_overlay">[[:File:18391.jpg|Album 18391]]</span></span>



<span id="Swaps"></span>



<span id="swaps"></span>

== Swaps ==



BW78 can be narrowed and installed in 1200.



<div class="SeeMainArticle">

Main: [[BW78_Rear_Axle_Swap|BW78 Rear Axle Swap]]

</div>



<span id="Splines"></span>



<span id="splines"></span>

== Splines ==



R31 Skyline: 28-spline axles (strongest) R31 Pintara: 25-spline axles (good)



<span id="Part_Numbers"></span>



<span id="part-numbers"></span>

== Part Numbers ==



http://www.9bolt.com Nissan Australia 38100-J7000 4.1 gearset (Pintara) Nissan Australia 38100-J7100 3.9 gearset R32 Skyline Nissan Australia 38100-J7110 3.7 gearset R31 Skyline M/T



<span id="LSD"></span>



<span id="lsd"></span>

== LSD ==



R31 Skyline Silhouette had 4-pinion LSD.



BW78 LSD out of a Holden an be fitted.



There are two series BW78 carrier, LSD are different for each.



Mini-spool<br />

<span id="13997" class="imagepx" style="width:400px; rotate:0deg; ">[[File:13997.jpg|200px]]<span class="album_overlay">[[:File:13997.jpg|Album 13997]]</span></span>



<span id="Brake_Upgrades"></span>



<span id="brake-upgrades"></span>

== Brake Upgrades ==



Large 300ZX rear caliper adapted<br />

<span id="13294" class="imagepx" style="width:400px; rotate:0deg; ">[[File:13294.jpg|200px]]<span class="album_overlay">[[:File:13294.jpg|Album 13294]]</span></span>



[[Sigma]] M68 rear axle with assembly rear disc brakes



1982- Sigma GSR (GJ/GK) 1984- Sigma Super Saloon (GJ) 1984- Sigma SE (GK) <span id="24059" class="imagepx" style="width:400px; rotate:0deg; ">[[File:24059.jpg|200px]]<span class="album_overlay">[[:File:24059.jpg|Album 24059]]</span></span>



<span id="Comparison"></span>



<span id="comparison"></span>

= Comparison =



The BW rear ends are pretty strong - meant to be stronger than the similar-size Hitachi diffs.



BW60: 6.0&quot; ring gear (152 mm -- larger than [[H145]]) BW68: 6.75&quot; ring gear (171 mm -- larger than [[H165]]) BW78: with M78 7.75&quot; ring gear (197: mm -- larger than [[H190]]) with M75 7.5&quot; ring gear (190 mm)



M78 is offically rated for 320 lb/ft



BW60 (1200) vs BW68 (120Y)<br />

<span id="11470" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11470.jpg|200px]]<span class="album_overlay">[[:File:11470.jpg|Album 11470]]</span></span>



BW68 (120Y) vs BW78 (R31 Australia)<br />

<span id="11442" class="imagepx" style="width:400px; rotate:0deg; ">[[File:11442.jpg|200px]]<span class="album_overlay">[[:File:11442.jpg|Album 11442]]</span></span>



Comparo: BW78 vs H165<br />

<span id="12864" class="imagepx" style="width:400px; rotate:0deg; ">[[File:12864.jpg|200px]]<span class="album_overlay">[[:File:12864.jpg|Album 12864]]</span></span> <span id="12865" class="imagepx" style="width:400px; rotate:0deg; ">[[File:12865.jpg|200px]]<span class="album_overlay">[[:File:12865.jpg|Album 12865]]</span></span> <span id="12864" class="imagepx" style="width:400px; rotate:0deg; ">[[File:12864.jpg|200px]]<span class="album_overlay">[[:File:12864.jpg|Album 12864]]</span></span> 



<div style="clear:left">

¤

</div>

[[Category:Rear Axle And Rear Suspension]]