Series Land Rover (Australia & NZ)
Serving the Series 1, Series 2, Series 3 and other Land Rover communities worldwide.

Sitemap

August 2009 Homepage
(Australia & NZ)

Visit our UK  or  USA/CAN sections

Select your Series
Enter
Land Rover Series 1

Enter
Land Rover Series 2

Enter
Land Rover Series 3

Problem you can't solve?
Check the Tech Articles

Series quiz
Try Series 1 quiz only

Try Series 2 quiz only

Try Series 3 quiz only

4x4 offroad quiz

Choose how many multiple choice questions you attempt. Rank your score with other participants


Last Updated
2/8/09

Torque Settings: Series I & II Land Rover Engines

The bolts that hold the parts of a Series Land Rover engine together do this by friction alone, nothing else. When you tighten a nut and bolt more, then their surfaces come more closely in contact and the friction is increased. The threads of the nut and bolt carry the frictional stress and if they are stressed excessively it is possible for them to shear, causing friction to decrease and the nut or bolt to lose grip. It is therefore important to the use the toque wrench to control the stress on threads.
Series Land Rover engines have their critical torque wrench settings available in the appropriate workshop manuals. In general, the greater the diameter of the bolt and the finer its thread then the greater the torque the bolts can take without the thread shearing.
It is generally true that the length of a spanner is related to the amount of stress that can be applied to that particular size nut or bolt. Having said that, it is not possible to exert the required torque with an ordinary spanner for the cylinderhead bolts, however, an extension bar should't be used because it isn't possible to gauge the stress you are applying. Torque wrenches capable of exerting 100+Nm are longer than ordinary spanners to facilitate the high torque needed.

Component	1.6 litre Petrol Torque				2 litre Petrol Torque				2 litre Diesel Torque
	lbf ft	Nm	kgf m		lbf ft	Nm	kgf m		lbf ft	Nm	kgf m
Con rod cap nuts	40	54	5.4		40	54	5.4		35	47	4.7
Main bearing cap bolts	80	108	10.8		80	108	10.8		85	115	11.5
Cylinderhead bolts 3/8in BSF	30	41	4.1		30	41	4.1
Cylinderhead bolts 7/16in BSF	50	68	6.8		50	68	6.8
Cylinderhead bolts 1/2in UNF									85	115	11.5
Rocker shaft bolts 5/16in UNF									12	16	1.6
Flywheel bolts	70	95	9.5		70	95	9.5		50	68	6.8
Fuel injector clamping bar									7	10	1
Heater plugs									25	34	3.4