The Engine Torque Specifications booklet, copyright 1965, I
quoted came with a beam type torque wrench purchased in the late
60's. P.A. Sturtevant has either joined with, or been bought out
by Richmont and the current company is called Sturtevant
Richmont. Sturtevant Richmont can be found at
http://www.srtorque.com or customerservice@srtorque.com. I do not
know if a current manual will contain the information on the
Whitworth sizes.
I should probably include the following information from the
booklet:
"The following Rules apply to the chart:
1. Consult manufactures specific recommendations when available.
2. The chart may be used directly when any of the following
lubricants are used:
Never-seez compound, molykote, Fel-Pro C-5, Graphite and oil,
or similar mixtures.
3. Increase the torque by 20% when using engine oil or chassis
grease as a lubricant.
(These lubricants ae not generally recommended for fasteners)
4 Reduce torque by 20% when plated bolts are used.
5. Increase torque by 20% when multiple tapered tooth
lockwashers are used.
CAUTION: TIGHTENING INTO ALUMINUM USUALLY WILL REQUIRE LESS
TORQUE."
Blake speaking:
Don't use a gray type of antisieze on exhaust manifold fasteners.
I have read reports that the high heat of the exhaust area will
actually cause the antisieze to bond the fasters in just like
using a thread locking compound. It was recommended that if an
anitsieze is used to use only the high temperature copper type.
Gudgeon pin clamp torque: I have found another source listing the
torque as 33 1/3 lbs.ft. This was found in the book "MG 'TC'
'TD' 'TF' 'TF'1500 'MGA' Service Manual" published by Scientific
Magazines Co. Pty. Ltd., Rockdale, NSW., Austrailia, by
arrangement and association with British Motor Corporation
(Aust.) Pty. Ltd. This was found under the "TC" General Data.
Can anyone verify this data from a factory TC manual?
Blake Urban
|