Bristol Cars 100B Instruction manual

•
•
WORKSHOP MANUAL
for the
BRISTOL 2 LITRE
TYP ES 100B AND 1 0082
ENG I NE, GEARBOX AND OVERDR IVE
URISTOL CARS, f ILTO N, BRI S TOL , ENGLAND

•
Key
1. Gearbox remote control.
8. Vibration damper.
2. Gearbox filler plug. 9. Engine front mounting.
3. Exhaust ro c ker cover.
10. Starter .
4. Throttle co ncrol layshaft.
11. Exhaust manifold.
5. Carburettors . 12. Clut ch operating lever.
6. Water pump thermostat.
7. Dynamo coo ling fan.
13 . Reversing light switch.
14. Rear mounting .
•
T y pe 1 00 8 Ent<:in~ with BWCR7 Gearbox. R.H. Side
1

25
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
2.
" " "
20
Fan.
Water pump.
Inlet rocker cover .
AII' intake manifold.
H. T. leads.
Air clea ner.
19
Petrol feed pipe (pump to
carbs L
Oil feed pipe co rockers .
Gearbox remote co ntrol.
Rear mounting.
Speedome rer drive .
Cylinder drain coc k.
Petrol pump.
"
Key
17
14.
15.
16.
17.
18.
19.
20.
21.
22 .
23.
24.
25 .
26.
"
Torque buffe rs.
Sump drain plug.
Engine breather pipe.
10
Oil thermometer conn ec .tio n.
Dipstick.
Oil filter.
Oil pressure relief valve.
Engine speed indica~or
drive.
Oil return pipe separator.
Engine fronc mounting.
Dynamo.
Vibration damper.
Gearbox l evel plug.
Type 100B Engine with BWCR7 Ge:.l,bo,.. L.H. Side
u
•
•

•
•
Type [00/B2 Engine and 8WCR" Gellrboll. R.H . Side
iii

•
, •
Type loofBt En ,t:ine ~nd B WC RII Ge~rbo" . L. H. Side
, ".
\; ' I V

•
•
En l'! "''' ::'pce,flc anOOl ll
J){'cnrbol'I1zmg .••
Kcm o vll1g Engme
Engine As se mbly I'r0Cedllrc
CYLINDER BLOCK GROUP
Spares 1l1u ~HI'B(Lo n s
Block. Ma, n Beari n gs
Camshaft Dr ive Cover Su mp
General Data
Repla cements
Rebo ri ng and Kcslcev "'B
Ca",,,I,,,I, Bc url ngi'! ".
Rcplacltlg I kll"H 'S Caps ...
Replacing D,stnb",or Drive B""h
RemOVIng and Refiulng Sump
Engine
List of Co nte nt s
CYLINDER HEAD AND VALVE OPERAT I "'G CROU P
Sp are s 11 1, uur31 ' ous
Cyl lll dcr He ad Group
Valve Op er ati ng G, - oup
Cen"r,,! Data
Repla ce m ents
Replacement of VlIlvc Sca ts
h[{tn B i{cpillcemelu Valve Guides
Rcpl"Clllg R oc ker B ushes
Valve T" ", ng ...
Replacmg [he T ,m lllS Cham.
Rcmov lO g and Refuti ng Camshaft
CRAKKSHAFT GROUP
Span,s Ill usl r31 io " s
Crankshaft Groups
Gcne,.,,] Ollln
Rcpl"ccrncn(~
1"';P",Cll0/1 of Crank,;hafl In Sl["
R cmo v!ng Cran ks haf l fr om Lnglflc
I
"o; p ccllo n of Crn nb .hnf ~ __
Rq ~rll1d ," j.( the J O ll ,- na l,,___
Page
1 ,
7 8
8
10
11
13
13
13 &. 14
14 &. 15
15
15
15 &. 16
18
19
21
21
21
21 &. 22
22
22
22
22 - 24
26 &. 27
"
30
30
30
30 &. 3 1
31

List of Co nt e nt s
CRANKS HM 'T G ROOP ( Cont.),
Nilriding '"
Ih'f i lting Cn tn kshaft to the E ngine
Pist o ns and Con n ecllng Rods
RemOVIng a P.ston or P"IIons wuh En g. ne In Situ
F LtlLng New P"stons With Eng ine D Is ma ntled
Con neclI ng Rods
Gudgeon P,n Bushe s
Big End fkar . nFt
PIs ton SIzes
Flywheel and Starte ,' Ring
OIL
PUMP , RE LJ EF VALVE AND OIL FI LTER
Spa r es !!Iustra oon9
011 Pump and Pllter
Engine L uhrlcafLon '"
AdJustmg 0,1 Pressu "e
Removing and RcfLltLllg Reli ef Va l ve
at! Fther '"
Eng,ne Lurwication Dlagr~ms
Od "pump '"
.
SOLE X CARBURETTORS, AIR M ANIFOLD, CARBURETTOR Co. "lTROLS, PETROL PUM P,
EXHAUST MANIFOLD ,'ND AIR CLEAK'ER
Spare" II[ustratlo ns
So[e)(
Carhs, A,r Mani fold, Petro l Pt pe '"
Petrol Pump, E~haust Mamfo ld, At I' Cleane r
Eng i ne Cont r ols
Re mo v.ng and RefUti ng Corhu reff or s .. ,
Carburettor Type .. and Sett ings
Ill_Stat'rer .. ,
Slo w Running
Main Throttle Range
D.smantl l ng Carhurettore
Recondltiomng Ca , 'hul'ctto rs".
Rc-Assembly of Carburettors
Carburettor Tu ", ng and Syn chronll ;at ion
All' Cleaner
Petrol Pump
Removmg the Pump from the Engine
Dismantling to Replnee the D iAphragm
RcflttLng thc Pump to thc Engine .. ,
ENGINE
ELECTR I CAL GROOP
Spa re s Jll ust rat ioo l8
D
ynamo, Stllr t Cr, I)ls[".buto r , COL I
General Data
RcnlOving I)Istl'L buro,' DrIve CasIng ASfiembly",
Page
31
31 - 33
33
33
34
34
34
34
34
34
& 35
38
39
39
39
39
40 &- 41
42 & 43
"
"
..
"
4 9 &. 50
"
"
"
51 &. 52
52
52 &. 53
53
_ 56
"
"
57
57
57
60
61
61
•
•

•
•
List of Contents
ENGINE ELECTRICAL GROOP (Cont.).
Dismantling and Re_Assembling the Distributor Drive Casing Assembly
Ignition Timin8"
Distributor Contact Breaker ...
Setting the Poim ...
Distributor Cover and Rotor ...
Checking the Ignition System
Replac i ng Condenser
Sparking Plugs ...
P ...
61 &. 62
62
62
62 &. 63
63
63
63 &. 64
"

•
•
Engine Specifications
Decarbonizing
Removing the Engine
Engine Assembly Procedure
.,.

•
•
Engine Specifications Decarbonizing
Removing the Engine
Engine
Assembly Procedure
The T ype 100B and B2 engine of'BrjslOl' manufacture
IS an overhead valve sixcylinderunitof2 litres capacily.
Bore G6 m/m (2.598 inch), Stroke 96 m/m (3.779 inch).
Capacity 1971 c.c. CompI'c8sion Ratio 8.5 to 1. RAC
raling 16.2 H,P. Maximllm power 105 bhp. at 5.000 rpm.
Cylinder Block fitted with ' 8rivadium' dry liners.
Aluminium alloy cylind er head w ith steel 'shrunk-in'
inserts for valves and bronze insert" for sparking plugs.
Polished hemispherical combustion chambers. Overhead
valve inclined at 80° operated by vertical anderass_head
rods. K.L.G. P. TEN. L.70 Sparking Plugs.
Camshaft mounted in four pressure 1 ubr;ested bearings
and driven by a duplex chain.
Three multiple jet down draught carbu r ettors fined
with air cleaner.
Aluminium alloy pistons and forged steel connecting
rod s . Forged steel c rankshaft. nitride hardened and
statically and dynamically balanced. Fitted with lead in_
dium shell type steel backed bearings. Torsional vib_
ration damper incorporating fan drive fined to front end
of crankshaft.
Fan and positive pump water Clrculat10n coohng
systenl with thermostatic control. Thermo syphon CIr_
culation f rom head to block.
High pressure lubrication by Hobourn Eaton type oil
pump to all engine beari n gs via full flo w oil fil t er w ith
provision for external oil cooler.
"
Maintenance of the engine is de alt with in two
categones.
Decarbonizing.
Each component Or section of t he engine in its detailed
form.
Decarbonizing
recommen d ed that the following
should be obtained before starting
N.310200
N.321310
N.321330
N.321970
N.3228BO
N.350240
:-.1.350250
N.360740
N.370030
:Joint Push Rod Covcr.
Joint _ Rocker Box Section.
Joint - Rocket· Box - Exhaust.
Joint _ Rocker Bo x -Inlet.
Gasket _ Cylinder Head.
Jo int _ Water Pump-Head .
Joint _ Water Pum p - Pump .
Joint _Oil Filter.
Gasket -Exhau st Manifold (2)
joints and
this work .
N.370 170
N.373320
N.380110
Joint _ Carburettor Adaptor (3)
Joint - Carburcttol ' (3)
Joint - Distributor Drive Casing.
This set of Gaskets is known as DEC.3. and can be
ordered as such from a 'Bristol' Distributor or agent or
direct from the work s .
Dismantling, Decarbonizing and Reassembly
Disconnect the negative terminal from the battery.
Drain the water from the engine by opening the drain
tap on the radiator and the drain tap on the left hand side
at the rear of the cylinder block.
Remove the Hose connections betwe en the radiatOr
and the water pump.
Withdraw the sparking plug leaqs.
Detach the oil feed pi pe and the revolution drive cable
fr om the distributor clrive casing by unscrewing the union
nuts.
Detach the distributor drive casin~ complete wi th the
Distributor by removing th e tWO 5/16 BSF Bolts and the
two lower nuts & washers.
NOTE. Care must be taken to ensure that (he distance
p:iece behind the casin~ at the bolt location is nOl mislaid.
This is selective for t ickness .
Disconnect the throttle and mixture controls from the
engine cnd .
Disconnect the fuel pipe connections from the carbu r_
ettors.
Detach the return spring On the carbure ttor control
.. haft unit and slacken off both fulcrum adjusting screws
until the ball ends of the scre ws are clear of the sockets.
Detach the three carburettors. together with the three
jOint washer s by removing the six 5/16" BSF nuts and
spring washers. The H.T. clip can also be removed at
this "tage.
Detach the two f,dcrum brackets and the centre
adaptor unit together w' ith the three jOint wash ers by re-
movi ng the six 5/16" BSF countersunk head screws.
Continuation of Rrocedure after Carburettor s have
been removed.
Detach the oil transfe r pipe con nectin g the cy lind e r
head and block..