V8 column stalk

Courtesy of John Lawley
Greg Lowe started off a useful investigation regarding a steering column indicator stalk switch for his 410, asking if BODA could establish which volume produced cars these switches were fitted to. The first action was to talk to Bristol Cars who stated that they haven’t had any switches for 407-410 models for some time and have been modifying 411 switches.

They do, out of interest, have two that they have converted at £141.35 each but would haggle on price. What I did establish was that it is a Lucas switch. On looking at our database, there were two indicator switches that show they were fitted to Bristols. These were Lucas 37SA and Lucas 119SA. It seems 407-410 were fitted with versions of 37SA of which we have found 8 types so far. We found that we could break these down into two categories; those with horn pushes and those without. On close examination of datasheets, the internals of all versions seem to carry the same Lucas part numbers so may be interchangeable if you get desperate.

Model 37SA Version 31885 (no horn push) fitted to:- Austin A60 1964-67; Bedford Beagle and 8cwt van 1966-69; Morris Oxford 1966-71; Riley 4/72 1966-69; Wolseley 16/60 1966-71. Version 31883 (with horn push) fitted to:- Austin Morris 5/6cwt van 1967-71; Morris Minor 1964-71 (not 68). Bristol Car Services believe they fitted Version 34385 – we cannot find this called up anywhere.

Model 119SA Version 33480 was fitted to:- Bristol 411; Reliant Scimitar; Hillman Hunter. Also rumoured that Sherpa vans and pickups were fitted a version. Having received the results of the database search, Greg came back, within a couple of days, saying that he had found a replacement switch for £35. So a minor success stemming from all BODA’s hard work on the data collection. Greg also reported that the main difference in the models appeared to be the harness connections; one being the bullet type and the other Lucas spade connectors. This will be finalised later and I will ask Greg to confirm which version he obtained and if there were any issues worth considering when fitting. So, many thanks Greg for raising what turned out to be a useful exercise.

37sa-details

 

37sa

 

119sa

 

V8 Braking systems

 407-410 Brake data

 

Master Cylinder Repair Kit
407 – 88840 KL 71410
408 – 88840 KL 71410
409 (All) – 88840 KL 71410
410 (All) – 88840 KL 71410

Other Vehicles that use the 88840 Master Cylinder

  • Austin Commercial LD1, LD01 (1 Ton), LD2, LD02 (1.5 Ton) up to chassis 16120
  • B.M.C. Commercial 1 Ton FC LDM20 1962 – 1967 & 260LD 1968-onwards B.M.C. Prime Movers FD.2 Loader 2WL Loader
  • British Jeffrey Diamond – Wakefield Road Grader 603 1966 on
  • Conveyancer E20-20 / 6-20 (Some) / E20-20 1955 Mk XXV / E2-24, G4-24
    E3-20, D4-24 / E4-15, G4-15 / E4-20, G5-16 / E22 RC Truck 1965-onwards / MkII, MkIv, MkVI
  • Coventry Climax IGY / Electrical IndustrialTractor Model-TE 1965-onwards Universal Major Trucks Models MSD, MSDA, MSP, MSPA, MCD, MCDS, MCP, MCPA, MED, MEDA, MEP, MEPA,
  • Universal Major Electric Fork Lift Truck MSE, MCE, & MEE 1963-onwards / Research Truck RT.812 / TLJ / UTF
  • Universal Petrol & DieselFork Lift Truck IGPT, IGPTA Series II, IGDT, IGDTA Series II / IGEUS
  • Universal Major Electric Fork Lift IGET / Series I & II, IGETA Series II / Bulkloader (Mechanical Shovel)
  • Halifax Tool Company 26Hr Battery Electric Tractor 1967-onwards
  • Lister Tractor 50cwt 4’7.5″ W.B.
  • Morris Commercial LLD1, LD01 (1 ton), LD2, LD02 (1.5 Ton) up to chassis 16120, LD4 LDOA Petrol RHD & LHD)
  • Morrison Electricars E type25 cwt. BE, E25 cwt. / BEV (Morrison BM60 & BM60 MkII 1928-onwards
  • Trojan 15cwt, Van 1950-onwards / Electrojan Battery Electric 20cwt Van 1952 onwards / Trojan -Carrimore Articulated 1952 onwards Trojan-Tasker / Articulated 1954 onwards.
  • Yale & Towne K51-60 Fork Lift Truck Model Yale Tractor Shovel (Throttle Control).

 

 

Servo Unit Repair Kits
407 = 4257-567 (Bristol Cars Only) Major Repair Kit SSB.72573
Piston Packing Kit KL 72523
Air Control Valve Kit 72525
408 (To Chassis 7200) = 4257-567 Major Repair Kit SSB.1034
Air Control Valve Kit SSB.1011
408 (From Chassis 7201) = 4258-445 Major Repair Kit SSB.1034
Air Control Valve Kit SSB.1011
409 (All) = 4258-445 Major Repair Kit SSB.1034
Air Control Valve Kit SSB.1011
410 (All) = 4258-445 Major Repair Kit SSB.1034
Air Control Valve Kit SSB.1011

 

  • Major Repair Kit – Includes the items that should be replaced whenever the unit requires servicing, regardless of cause.
  • Piston Packing Unit – Includes parts which must be used, in addition to the parts included in the major repair kit, if the leather Piston Packing needs to be replaced.
  • Air Control Valve Kit – Consists of a sub-assembly of the end cover, valve and air pipe, to be fitted as a complete unit, each time a valve requires replacement.

Other Vehicles that use the 4258-445 Servo Unit

  • A110 Westminster MKII 1964-onwards / A110 Westminster MKII Provincial Police Car 1967-on.
  • Daimler Majestic Major 450/1 Limousine from chassis 136573.
  • Vanden Plas Princess 4 Litre R 3909cc 1964-onwards.
  • Wolseley 6/110 MKII 1964-onwards / Wolseley 6/110 Provincial Police Car 1967-onwards.

[gview file=”https://bristoloda.org/wp-content/uploads/2013/02/407-408-Servo-4257-567.pdf”]

Front Exchange Caliper Models Dates
Lucas SP2511 411 – All Models 1969-75
Lucas SP2511 412 S2, 603 E, 603 S2 1976-82

 

Make Also Used On Dates
SP2511 Jaguar (Daimler) Daimler Double Six – 5.3, 5.3 HE 1972-09/73
SP2511 Jaguar E Type – 4.2, 5.3, V12 1968-74
SP2511 Jaguar XJ12 5.3 1972-09/73
SP2511 Jensen Interceptor MKIII 7.2 1971-76
SP2511 Reliant Scimitar 3.0 GTE 1968-72
SP2511 Rover Group P6 3500 1968-76

 

 

Rear Exchange Caliper Models Dates
Lucas SP2524 411 – All Models 1969-75
Lucas SP2524 412 S2, 603 E, 603 S2 1976-82

 

 

 

Make Also Used On Dates
AC 3000 ME – All Models 1974-86
AC 428 – All Models 1969-74
Aston Martin DB6 – All Models 1969-71
Aston Martin DBS 6 – All Models 1971-73
Aston Martin DBS V8 – All Models 1970-72
Aston Martin V8, V8 Volante – All Models 1972-77
Jensen Interceptor MKIII 7.2 1971-76

 

Rear Hose Used On Dates
PCH100 411 1969-75
PCH100 412 Conv. S2 1975-77
PCH100 412 S, 603 E, 603 S2 1976-82
PCH100 603 E, S, S2 1976-82

 

  • Brake pads for the 407-onwards (EBC & others) are frequently listed for sale on EBay.
  • 408 MkII Brake Pad Set Rear Calipers are as fitted to Jaguar Mk2/V8. The Handbrake Pad Set, are also as fitted to the Jaguar Mk2/V8
  • 407- Fighter are available from EBC. EBC Brakes Direct Tel: 0845 225 5011 There are several other sources for EBC brake pads.

brake-pads-chrysler

 chrysler-411-gdb531

chrysler-411-pfk3

 Brigand, Beaufighter and Britannia

[gview file=”https://bristoloda.org/wp-content/uploads/2013/02/Ferodo-Brakes.pdf”]

LM16453

Currently listed at Discount Car Parts at £192.70 as of August 2010. A French site lists the Cylinder as fitting Land Rover: Range Rover Mark I (EA, NA , HAA , HAB, HAM, HBM , ER , RN) 3.5 ( 132Ch ) Braking System AP Lockheed. They are currently selling at half price = €174.84 ~ approx. £145.70 from Mister Auto.

407-408-brake-details

 

Front Calipers Models Dates
L.H. Girling 64033006 / Dunlop VB 1198B 407 & 408 1961 – 65
R.H. Girling 64033007 / Dunlop VB 1198A 407 & 408 1961 – 65

 

Also Fitted To Model Dates
Alvis 3 Litre TD21 1961 – 64
Aston Martin DB4 1959 – Oct 60 / 1964 On
Jensen 541s 1961 – 62
Jensen CV8 MkI & II Oct 1962 – June 65
Jensen CV8 MkIII July 1965 – 66
Jensen Interceptor 1967 – 68

 

Rear Calipers Models Dates
L.H. Girling 64033142 / Dunlop VB 1284-B 407 & 408 1961 – 65
L.H. Girling 64033143 / Dunlop VB 1284-A 407 & 408 1961 – 65

 

 Note: The catalogue notes that these were used only on Bristol Cars.

SP2556 Service Kit Also Used On Models Dates
Alvis 3 Litre TD21 1961 – 64
Aston Martin DB4 1959 – Oct 60 / 1964 On
Daimler Majestic Major 1960 On
Daimler Limousine DR450 1961 On
Daimler V8 2 1/2 Litre 1962 On
Ferrari Berlinetta Coupe
Cabriolet 250GT
1961 – 64
Ferrari 330GT 1963 On
Ferrari 248GT & 275GT 1964 On
Fiat Arbarth 2200 1960
I.S.O. Revolta GT Coupe 1962 – June 63
I.S.O. Revolta GT Coupe July 63 – 1964
Jaguar XK15 & 150S 1958 – 59
Jaguar 2.4 & 3.4 Litre 1958 – 61
Jaguar 3.8 Litre 1959- 61
Jaguar 2.4 & 3.4 & 3.8 Litre 1961 – 64
Jaguar 240 & 340 1967 – Oct 69
Jaguar 3.8 “E” Type (First 5,000 1961 – 64
Jaguar 3.8 “E” Type (5,001 on) 1961 – 64
Jaguar 4.2 “E” Type 1964 – 68
Jaguar 2+2 “E” Type (XJ8) 1966 On
Jaguar 3.8 Litre Mk X (First 1,500) 1961
Jensen 541s 1961 – 62
Jensen CV8 MkI & II Oct 1962 – June 65
Jensen CV8 MkIII July 1965 – 66
Jensen Interceptor 1967 – 68
Lancia Flaminia GT & Sports 1960 – on
Lancia Flaminia Saloon & Coupe Undated
Lancia Flavia Saloon 1961 – 68
Lancia Flavia Coupe 1961 – 68
Lancia Flavia Coupe 1968 – On
Lancia Fulvia Saloon & Coupe 1964 – On
MGA Twin Cam 1964 On1 – 68
Rover 2000 1963 – 66

 

SP2555 Service Kit Also Used On Models Dates
Alpha Romeo T2 Competition 1963 – On
Daimler V8 2 1/2 Litre 1962 On
Facel Facella 1964 – On
Ferrari 248GT & 275GT 1964 On
Fiat Arbarth 2200 1960
I.S.O. Revolta GT Coupe 1962 – June 63
I.S.O. Revolta GT Coupe July 63 – 1964
Jaguar XK15 & 150S 1958 – 59
Jaguar 2.4 & 3.4 Litre 1958 – 61
Jaguar 3.8 Litre 1959- 61
Jaguar 2.4 & 3.4 & 3.8 Litre 1961 – 64
Jaguar 240 & 340 1967 – Oct 69
Lancia Flaminia GT & Sports 1960 – on
MGA Twin Cam 1964 On1 – 68
 
[gview file=”https://bristoloda.org/wp-content/uploads/2013/02/407-8-Parts-List.pdf”]
[gview file=”https://bristoloda.org/wp-content/uploads/2013/02/409-10-Parts-List.pdf”]

 

 

 

How shock absorbers work

 

(Extracted by K. Lutz)

Shock absorbers don’t really absorb shock, they dampen it, hence they are often referred to as dampers. Why is this important for you to know? To improve ride quality. Basically put, a shock absorbers sole purpose is to dampen the compression and rebound of any suspension system by controlling the speed at which a suspension cycles. Without them, your car would continue to bounce up and down until the kinetic energy is finally dissipated from the suspension’s springs (e.g. leaf springs, coil springs, torsion bar, etc.) and sea sickness may follow.

Now let’s think about the law of conservation of energy. With this law in mind, shocks will perform two functions. The first function is to slow the suspension’s cycling of compressing or rebounding. Secondly, since energy can’t be destroyed, the shock transforms the kinetic energy into heat as it dampens the “bouncing” of the springs. That’s it. That’s what a shock does.

Or otherwise put – in a vehicle, it reduces the effect of travelling over rough ground, leading to improved ride quality, and increase in comfort due to substantially reduced amplitude of disturbances. Without shock absorbers, the vehicle would have a bouncing ride, as energy is stored in the spring and then released to the vehicle, possibly exceeding the allowed range of suspension movement. Control of excessive suspension movement without shock absorption requires stiffer (higher rate) springs, which would in turn give a harsh ride.

Shock absorbers allow the use of soft (lower rate) springs while controlling the rate of suspension movement in response to bumps. They also, along with “bounce” in your tyres, dampen the motion of the unsprung weight up and down on the springiness of the tyre. Since the tyre is not as soft as the springs, effective wheel bounce damping may require stiffer shocks than would be ideal for the vehicle motion alone.

Spring-based shock absorbers commonly use coil springs or leaf springs, though torsion bars can be used in torsional shocks as well. Ideal springs alone, however, are not shock absorbers as springs only store and do not dissipate or absorb energy. Vehicles typically employ both springs or torsion bars as well as hydraulic shock absorbers. In this combination, “shock absorber” is reserved specifically for the hydraulic piston that absorbs and dissipates vibration. Below are some images which illustrate these principles, and the technical features of dampers.

Salisbury Rear Axle

Salisbury-Rear-Axle
REAR-AXLE-OIL-LEAKS-AND-RELATED-ISSUES-Edited

The first link does not apply to the earlier 2 Litre models, but is more relevant to 405/6 onwards through Chrysler V8′s etc. This and other information has kindly been donated by Per Blomquist and comes from a Motor Trader article from May 1958. It is reproduced here so that the technically minded can get a better understanding of how things work. The second link is an article by Phillip Herbert.