3 Speed Crash Gearbox

From Holdenpaedia

Jump to: navigation, search

Page created by T Jul 17th 2007:

Back to Gearboxes Transmissions and Differentials

3 Speed Crash Gearbox in its original Form in this case an EK Holden. Click to Enlargen. Photo by Koutara.

3 Speed Crash Gearbox fitted to EJ Bellhousing. This was the first type to use a separate Bellhousing, has the 4 Bolt Mating Face and support for Grey Motor Engine Mounts. Click to Enlargen. Photo by Stock-EJ.

3 Speed Crash Gearbox as it appeared in EH - HK. Click to Enlargen. Photo by Dougies EH.

The Bellhousing used with 3 Speed Crash Gearboxes in EJ's. Note the 4 Bolts (2 top, 1 right side, 1 bottom). The Unit also has provision for Grey Motor Rear Engine Mounts (3 Holes left and 3 Holes right side). Click to Enlargen. Photo by Stock-EJ.

3 Speed Crash Gearbox as it appeared in late EH - HK. Note there are no Extensions for the Grey Motor Mounts. Click to Enlargen. Photo by Dougies EH.

1 3 Speed Crash Gearbox:

[edit] 3 Speed Crash Gearbox:

This gearbox was fitted to Holdens in one of 3 forms from FX - HK. It had a crash type 1st Gear but Synchromesh on 2nd and 3rd Gears. It also had a Reverse Gear.

[edit] Gearbox Forms:

1. The original 3 Speed Crash Gearbox had integrated Gearbox and Bellhousing and was fitted to FX - EK.

2. The 2nd form was installed in EJ's. This used a separate Bellhousing and was fastened to the Bellhousing by 4 Bolts. The EJ Bellhousing had 3 Holes on each side to provide for the Grey Motor Rear Engine Mounts.

3. The last form also used a separate Bellhousing but was secured to the Bellhousing by 5 Volts. These Belhousings had no Holes for attaching to Grey Motor Rear Engine Mounts.

Stock-EJ's Shed has 3 Speed Crash Box images.

The "Three on the Tree" column shift used with this gearbox operated differently from the later 3 Speed All Synchro Gearbox fitted from HK on.

Holden EJ Gearbox with 2 speed synchro and crash 1st gear. EJ's used the 4 Bolt Bellhousing. Click to Enlargen. Photo by Ishjana Elsher.

The 3 Speed Crashbox has 2 pullrods. 1 pullrod actually moves the gears, the other determines which gears will be moved.

[edit] EJ Manual Gearbox:

This was the first Gearbox to use a separate Bellhousing and also have Synchromesh on 2nd, 3rd Gears and a Crash 1st Gear. It used 4 Bolts to fasten it to the Bellhousing. The Bolt Pattern between the Bellhousing and Engine remained the same and continued through to VK Six Cylinder Engines.

3 Speed Crash Gearboxwith Aftermarket Shifter. Click to Enlargen. Photo by Grazza.

[edit] Late EH and Later Manual Gearboxes:

The EJ Manual Gearbox continued into early EH when it was replaced by a version of the same Gearbox that used 5 Bolts to fasten it to the Bellhousing. The Bolt Pattern between the Bellhousing and Engine remained the same and continued through to VK Six Cylinder Engines. This Gearbox was used in HD, HR and HK Holdens.

[edit] 3 Speed All Synchromesh Gearbox:

The later 3 Speed All Synchromesh Gearbox also has 2 pullrods, but 1 pullrod selects 1st and Reverse while the other selects 2nd and 3rd. Any conversion needs the Steering Column to be changed to match the Gearbox.

3 Speed All Synchromesh Gearbox

[edit] Draining the Gearbox:

To drain the oil remove the lowest extension housing bolt on the offside of the gearbox and catch the oil in a tin. On FX - EK the drain bolt is in the centre of the cover on the bottom of the gearbox.

[edit] Filling the Gearbox:

When filling the gearbox make sure the drain bolt has been fitted and tightened down. Remove the large filler bolt in the nearside of the gearbox and place a tin under the hole. Pour in oil using an external funnel and a length of hose until the oil begins to run back out the filler hole and into the tin. When the oil stops draining out, install the filler plug and tighten it down. On FX - EK the filler plug is on the offside of the gearbox between the clutch throwout lever and the gear selector levers.

The 3 speed Gearbox has synchromesh on 2nd and 3rd (top) gears only.

Note that this gearbox uses one activation rod to shift the gears and the other to select whether (1st or Reverse) or (2nd or 3rd) gears are shifted. 9 bolts hold the side cover on.

An early Holden Gearbox with 2 speed synchro and crash 1st gear. Click to Enlargen. Photo by Grazza.	A Grey 138 cu in Holden Six Cylinder Engine coupled to original gearbox with 2 speed synchro and crash 1st gear. Click to Enlargen. Photo by Stock EJ.	Holden Red 161 six (as the sign says) with 3 Speed Crash Gearbox fitted. Click to Enlargen. Photo by Qute.
Early 3 Speed Crash Gearbox from EK. The Oil Filler Plug is between the Gear Selector and the Clutch Release lever in the centre left of the image. Click to Enlargen. Photo by Koutara.	Early 3 Speed Crash Gearbox from EK. This type of gearbox was fitted from FX - EK. Click to Enlargen. Photo by Koutara.	This 3 Speed Crash Gearbox is unique to EJ because of the Mount Points at the front of the Bellhousing and the Bolts that connect the Bellhousing to the Gearbox. Click to Enlargen. Photo by Stock-EJ.
Later style 3 Speed Crash Gearbox. This type uses a separate Bellhousing. This type of gearbox was fitted from EJ - HK but came in 2 forms. 4 Bolt attachment (EJ and early EH), 5 Bolt attachment (late EH, HD, HR - HK). Click to Enlargen. Photo by Qute.	Later style 3 Speed Crash Gearbox. This type uses a separate Bellhousing. Click to Enlargen. Photo by Qute.	First Gear is Selected. Click to Enlargen. Photo by Qute.
Late EH Bellhousing. Click to Enlargen. Photo by 66HRUte.	Late EH Bellhousing. Click to Enlargen. Photo by 66HRUte.	Late EH Bellhousing. Click to Enlargen. Photo by 66HRUte.
Late EH Clutch and Bellhousing. Click to Enlargen. Photo by HRAmbo.	Late EH Bellhousing. Click to Enlargen. Photo by 66HRUte.	5 Bolt 3 Speed Crash Bellhousing. Click to Enlargen. Photo by 66HRUte.
	5 Bolt 3 Speed Crash Bellhousing. Click to Enlargen. Photo by 66HRUte.