Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login


Take the time to read our Privacy Policy.

HKM068 Offline
#1 Posted : Monday, 30 November 2020 9:07:31 PM(UTC)
HKM068

Rank: Member

Reputation:

Groups: Registered
Joined: 8/12/2012(UTC)
Posts: 43

All

Looks like I have blown the bolts on the banjo. Actually the bolts are fine, as are the bearings but the rest is a mess. All the gears, with the possible exception of the ring gear are chipped or broken (spider gears). Not sure what the cause was but it just locked up and that was that. Plenty of debris in the housing and part of the broken pinion shaft jammed between the crown and ring.

It's a 2.78 LSD unit, apparently from a Brougham originally.

While banjo centres seem abundant, similar units are few and far between so I just want to check on compatibility. From what I can gather, there is a fair amount of exchangeability between these, if I am willing to swap out any 6 cyl yoke for the v8 one (including preload etc). I'd just like to get it running for now.

Apart from course or fine splines, what centres won't go in the housing? There seems to be more 3.55 units around but that might be a bit short. Will I miss the LSD if I lose that?

Car is HK Monaro with essentially stock 307 and Powerglide.

All thoughts appreciated.
The HKTG Garage Offline
#2 Posted : Monday, 30 November 2020 9:54:08 PM(UTC)
The HKTG Garage

Rank: Member

Reputation:

Groups: Registered
Joined: 16/09/2010(UTC)
Posts: 396
Man
Australia

Thanks: 11 times
You should be able to remove one from an LH SLR/5000 wreck. They used the same centre.
The HKTG Garage. The Home of HK HT HG Holden.
Sandaro Offline
#3 Posted : Tuesday, 1 December 2020 5:52:35 AM(UTC)
Sandaro

Rank: Member

Reputation:

Groups: Registered
Joined: 3/10/2015(UTC)
Posts: 189

Thanks: 1 times
Was thanked: 16 time(s) in 15 post(s)
The Housing will suit 3.08 and 2.78 centres which have a long bolt at the bottom, the 3.36 and 3.55 are different but I imagine could fit with a different bolt.

Whether you will notice the LSD depends on how you drive your car. If just for cruising No. If you are still power sliding the Monaro through turns or doing as bit of dirt road driving then Yes, you will notice.
HK1837 Offline
#4 Posted : Tuesday, 1 December 2020 5:57:37 AM(UTC)
HK1837

Rank: Veteran

Reputation:

Groups: Moderator, Registered, Veteran
Joined: 1/03/2005(UTC)
Posts: 13,486

Thanks: 1 times
Was thanked: 238 time(s) in 229 post(s)
As a straight bolt in only 2.78 or 3.08 banjo, but has to be a coarse spline so rules out lots of V8 Torana. You may luck an LH or LX 3.3 auto centre and have to swap the yoke. LSD centres are hard to find and too dear.

If you want a permanent solution and want to keep the banjo your best bet will be find good 2.78 gears and get it rebuilt with a new Tru trac centre. It will probably mean getting new billet axles made and probably 28 spline. You’ll find good 2.78 gears in a VB-VH Commodore.

https://www.harrop.com.a...-holden-banjo-28-spline

_______________________________________________________
If we all had the same (good) taste, who would buy all the Fords?
HKM068 Offline
#5 Posted : Tuesday, 1 December 2020 6:51:48 AM(UTC)
HKM068

Rank: Member

Reputation:

Groups: Registered
Joined: 8/12/2012(UTC)
Posts: 43

Thanks for the replies and pointing me in the right direction.

I might be able to get a cheap(ish) 3.55 locally but would need to change the yoke to v8 to match the tail shaft. Could get me back on the road relatively quickly, or at least be able to move the car! A bit short for the highway, I'd think.

Stock 307 ... Powerglide .... power slides .... no. Just a cruiser so with the rarity of the LSDs I'll live without it.

That Harrop unit looks the goods. Very nice. Better than the bulk of a 9 inch.

EDIT: Meant to ask, what is the difference between the 6 and 8 yokes, I'm guessing size? Are the dimensions around anywhere?

Edited by user Tuesday, 1 December 2020 6:53:42 AM(UTC)  | Reason: Not specified

HK1837 Offline
#6 Posted : Tuesday, 1 December 2020 7:16:19 AM(UTC)
HK1837

Rank: Veteran

Reputation:

Groups: Moderator, Registered, Veteran
Joined: 1/03/2005(UTC)
Posts: 13,486

Thanks: 1 times
Was thanked: 238 time(s) in 229 post(s)
Uni size. You have to change the diff housing to fit a 3.55, or modify it. Not sure if a shorter bolt works?

Best to buy a 2.78 or 3.08 ready to go. But the chances of finding a good coarse spline one today ready to use is slim. About $500-$5-600 for one that may need rebuilding is almost silly.
_______________________________________________________
If we all had the same (good) taste, who would buy all the Fords?
 1 user thanked HK1837 for this useful post.
Smitty2 on 1/12/2020(UTC)
The HKTG Garage Offline
#7 Posted : Tuesday, 1 December 2020 7:35:23 AM(UTC)
The HKTG Garage

Rank: Member

Reputation:

Groups: Registered
Joined: 16/09/2010(UTC)
Posts: 396
Man
Australia

Thanks: 11 times
Originally Posted by: The HKTG Garage Go to Quoted Post
You should be able to remove one from an LH SLR/5000 wreck. They used the same centre.


But seriously though, your best bet would be to find one from another HK Brougham. All HK with 307/Glide were factory fitted with LSD 2.78:1.

In HT HG Brougham 2.78:1 was also standard but the limited slip (G80) was an option.

HG 253/308 Trimatic Kingswoods and Premiers also had 2.78:1 ratio open wheelers.
The HKTG Garage. The Home of HK HT HG Holden.
8D11PCH2 Offline
#8 Posted : Tuesday, 1 December 2020 8:04:25 AM(UTC)
8D11PCH2

Rank: Member

Reputation:

Groups: Registered
Joined: 11/09/2016(UTC)
Posts: 136
Australia
Location: OZ

Was thanked: 10 time(s) in 10 post(s)
Originally Posted by: HK1837 Go to Quoted Post
Uni size. You have to change the diff housing to fit a 3.55, or modify it. Not sure if a shorter bolt works?

Best to buy a 2.78 or 3.08 ready to go. But the chances of finding a good coarse spline one today ready to use is slim. About $500-$5-600 for one that may need rebuilding is almost silly.


Yes 3.55 and 3.36 will go into a 3.08/2.78 housing with two short bolts at the bottom in lieu of the two long bolts. Copper washers under heads of bolts essential to prevent oil leaks.
Smitty2 Offline
#9 Posted : Tuesday, 1 December 2020 8:49:01 AM(UTC)
Smitty2

Rank: Member

Reputation:

Groups: Registered
Joined: 6/07/2019(UTC)
Posts: 98
Australia
Location: bayside Melbourne

Thanks: 75 times
Was thanked: 9 time(s) in 9 post(s)
Originally Posted by: 8D11PCH2 Go to Quoted Post
................ Copper washers under heads of bolts essential to prevent oil leaks.


... a very big 'YES' to that hint!

Edited by user Tuesday, 1 December 2020 8:49:32 AM(UTC)  | Reason: Not specified

Club circuit racing...the best fun you can have with your pants on
HKM068 Offline
#10 Posted : Tuesday, 1 December 2020 9:28:42 AM(UTC)
HKM068

Rank: Member

Reputation:

Groups: Registered
Joined: 8/12/2012(UTC)
Posts: 43

Brilliant, thanks. Lots of good info here.

I have a line on a 3.08 non LSD centre with a v8 yoke. Should bolt right on! We'll see how we go. Might give the old bus a new lease of life.

Thanks again to all for posting. Much appreciated.

HK1837 Offline
#11 Posted : Tuesday, 1 December 2020 9:54:54 AM(UTC)
HK1837

Rank: Veteran

Reputation:

Groups: Moderator, Registered, Veteran
Joined: 1/03/2005(UTC)
Posts: 13,486

Thanks: 1 times
Was thanked: 238 time(s) in 229 post(s)
3.08 banjo was supposed to be optional on HK V8 auto from about Monaro/Brougham release. Never seen one though. Features manual shows that you should have been able to get them in non-LSD as well, haven’t seen one of those prior to HT either. Early V8 auto GTS was supposed to be standard with 2.78 banjo and optional with 3.08 banjo or 3.36/3.55 Salisbury but from about the start of August 3.36 Salisbury became standard. It should go a little better than with a 2.78 anyway and less likely to break with an open centre.
_______________________________________________________
If we all had the same (good) taste, who would buy all the Fords?
 1 user thanked HK1837 for this useful post.
Smitty2 on 3/12/2020(UTC)
Users browsing this topic
Guest
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF | YAF © 2003-2021, Yet Another Forum.NET
This page was generated in 0.338 seconds.