Spigot Bush

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Page created by T Oct 24th 2007:

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 Rear view of a 6 cylinder Spigot (called a Locator when used with an Automatic).  Click to Enlargen. Photo by HQ_SS.

Spigot Bush:

Cars with Manual Gearboxes use a Spigot Bush. This Bush lives in the rear and centre of the Crankshaft. It's purpose is to provide support for the Gearbox Mainshaft. When the car is in gear, the Engine running and the Clutch pushed in, the Crankshaft spins but the Mainshaft remains still. This is the reason why it's called a Bush.

Old Spigot Bush on top of the New. Click to Enlargen. Photo by Kranky307.
Old Spigot Bush. Click to Enlargen. Photo by Kranky307.

Locator:

In the case of an Automatic Gearbox the device is called a Locator because it is not a Bearing, it spins with the Crankshaft and the Torque Converter. The Locator ensures that the Torque Converter spins true and centred in the crankshaft. The Locator *must* be fitted with an automatic gearbox.

Auto to Manual Conversion:

When Converting from an Automatic to Manual Transmission the Locator will need to be removed and a Spigot Bush installed. The Locator is easy to remove and can be tapped out by wedging a thin screwdriver between the crankshaft and the Locator. They come out relatively easily and sometimes they stick to the Torque Converter.

Manual to Auto Conversion:

When Converting from Manual to Automatic Transmission the Spigot Bush will need to be removed and a Locator installed.

Spigot Bush Removal:

By HQJeff 25/10/07@06:40 LetsCruise 6112

Try wet newspaper instead of grease. It will remove the most stubborn bush with less mess. Cheers, Jeff. End of submission HQJeff.

By ben simpson 18/11/12@23:02

i use wet newspaper, less mess than grease End of submission Ben Simpson.

THE manual spigot is brass and sits flush inside the end of the crank,it has a smaller hole than a auto spigot.. THE auto spigot is steel has a flange around it which only allows it to go part way inside the crank while the rest sits outside the crank on the drive plate.. it has a larger hole than a manual spigot.. just use the thickest grease you can get hold of ,wheel bearing grease will do and pack it inside the end of the crank then get a bolt or a socket that fits/slides inside the spigot without binding, stick extension bar on socket and hit with hammer you may need to repack with grease but the spigot will come out fairly easy... u may need to use a 3/8 drive socket as 1/2 inch drive sockets are to large.. wombat End of submission Wombat.

5/8 UNC tap works a treat. Wind it in till it bottoms, then keep winding till it pulls out. They come out very easy. Shane. HPEngines


I just use a 9/16 bolt and bit of grease.


yep, 9/16 bolt and grease is the [Naughty Pottyword]..


yep, 9/16 bolt and grease is the [Naughty Pottyword]..

i use a loxin or rawl plug that fits in, expand it till tight then use a lever to pull the lot out johnperth

I used the thread of my harmonic balancer puller & kept winding it into the bush (the spigot is soft bronze) until the thread bottomed out on the flywheel. From that point, the spigot pulls itself out of the flywheel, along the thread. Would depend on your HB puller centre bolt. Its a good way to get it out if you're in a confined space.
Matt

New Spigot Bush:

A helpful tip!
Just a thought but given that there are pictures of spigot bush's on the front page, I hope that you guys that are rebuilding engines and replacing clutch's know that the spigot bush is made of sintered bronze.
Sintered bronze is porous and used because of it'd ability to stay lubricated for a lot of years.
The bush should be soaked in oil overnight or have oil forced through it before installation.
I always have a few spares in the shed and they are stored in a jar of oil.
I have known guys that are non the wiser and have just slapped a bit of grease in the bush centre and on the spigot shaft thinking they have done the job! Cheers, Mick.

Installing a New Spigot Bush:

GOOD to see you solved your problem .. did you know the spigot bush is only meant to go in one way , if you look at it one end is more rounded than the other and at the start of the hole has a chamfer/taper at the start this is the end that faces out of the crank towards the gearbox and the gearbox shaft goes into , the tapper /chamfer is there to make it easy for the shaft to align and slide in ...
it sounds like you may have had the bush in back to front..
as the back of the bush has no chafer/taper and is flatter ..
this makes it hard for the shaft to align and slide in.. wombat..

 

yeah there tight, clean the inside of the crank with some emery tape, and spray some wd40, rp7 or crc in there and knock it in , you can use a socket that fits neatly around the outer edge of the bush , on an extension.. wombat.

   

 

 
Rear view of a 6 cylinder Spigot Bush used with a Manual Gearbox.  Click to Enlargen. Photo by HQ_SS.
6 cylinder Locator for Trimatic Gearbox.  Click to Enlargen. Photo by HQ_SS.

6 cylinder Locator for Trimatic Gearbox.  Click to Enlargen. Photo by HQ_SS.

 
6 cylinder Locator for Trimatic Gearbox.  Click to Enlargen. Photo by HQ_SS.

 
6 cylinder Spigot Bush for Manual Gearbox.  Click to Enlargen. Photo by Stuart.
 
Rear view of a 6 cylinder Spigot (called a Locator when used with an Automatic).  Click to Enlargen. Photo by HQ_SS.
 
6 cylinder Locator for Trimatic Gearbox in 3.3 EST VK Crankshaft.  Click to Enlargen. Photo by Stuart.
  
Manual Gearbox Spigot Bush in 3.3 Crankshaft.  Click to Enlargen. Photo by Stuart.
 
 
Spigot Bush removal from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
 
Spigot Bush removal from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
 
Spigot Bush removal from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
 
Spigot Bush removal from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
 
Spigot Bush removal from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
 
Spigot Bush removal from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
 

 

Spigot Bush removal from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
 
Tailormade Spigot Bush Removal Tool. It's made from a dyna-bolt ground to fit inside the bush. It works perfectly. Photo by HRAmbo. Click to Enlargen.
 
Removing the Spigot Bush  from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
The original Spigot Bush, removed from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
New Spigot Bush (right), old Spigot Bush (left) from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
New Spigot Bush (right), old Spigot Bush (left) from a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
New Spigot Bush installed in a 253 Holden V8.  Click to Enlargen. Photo by 2HQueues.
 

 

Links:

Thread

Spigot+Bush+Removal

Tailormade Spigot Bush Removal Tool Thread

HQ_SS' Shed

Spigot Bush Removal Thread

Spigot Bush Installation Thread

Stuart's Shed

Spigot Bush Replacement

Terms:

Terms

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