1.6 cvh engines
10-03-2009, 08:14 PM
#1
Advanced PassionFord User
Thread Starter
1.6 cvh engines
Any gurus on here?
The standard 1.6 fitted to the mk2 fiesta xr2, was this the same as(identical to) the engine in the xr3 escort? And non xr 1.6 models? Also, are any bits common accross different capacities?
Cheers
The standard 1.6 fitted to the mk2 fiesta xr2, was this the same as(identical to) the engine in the xr3 escort? And non xr 1.6 models? Also, are any bits common accross different capacities?
Cheers
10-03-2009, 08:22 PM
#2
Black Country RSOC
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Essentially yes, block is the same, as is the sump. Oil pumps will be slightly different post 1986, as will water pumps.
The heads on later ones were lean burn (diff shaped combustion chambers in the head) - i think.
Inlet manifolds were specific to the early or later carb types i think as well.
The heads on later ones were lean burn (diff shaped combustion chambers in the head) - i think.
Inlet manifolds were specific to the early or later carb types i think as well.
10-03-2009, 08:36 PM
#3
Advanced PassionFord User
Thread Starter
Essentially yes, block is the same, as is the sump. Oil pumps will be slightly different post 1986, as will water pumps.
The heads on later ones were lean burn (diff shaped combustion chambers in the head) - i think.
Inlet manifolds were specific to the early or later carb types i think as well.
The heads on later ones were lean burn (diff shaped combustion chambers in the head) - i think.
Inlet manifolds were specific to the early or later carb types i think as well.
Its for the knockhill XR2 racing and I wondered about low mileage unragged engines from other cars as a base point.
10-03-2009, 08:40 PM
#4
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I reckon the twin choke 90bhp mk4 cvh carb engine (fitted to the later 1.6 L/GL/Ghia) would be identical to the Mk2 XR2 engine, as in block n head, just swap the inlet/exhaust manifolds over and your done.
10-03-2009, 08:42 PM
#5
Advanced PassionFord User
Thread Starter
I reckon so yes, cos scrutineers would love to spot "incorrect" parts.
I reckon the twin choke 90bhp mk4 cvh carb engine (fitted to the later 1.6 L/GL/Ghia) would be identical to the Mk2 XR2 engine, as in block n head, just swap the inlet/exhaust manifolds over and your done.
I reckon the twin choke 90bhp mk4 cvh carb engine (fitted to the later 1.6 L/GL/Ghia) would be identical to the Mk2 XR2 engine, as in block n head, just swap the inlet/exhaust manifolds over and your done.
XR2 ENGINE SPECIFICATION SHEETS: O.H.C. ONLY
(a) Carburettor.-
Make Weber
Type Twinchoke
Number on engine One
Number of main venturi Two
Maximum dia. main venturi 24 (p) 25 (s)
Maximum dia. of throttle barrels 32 (p) 34 (s)
Maximum dia. at inlet manifold 34
Carburettor may not be modified except for parts controlling
quantity of fuel, and the removal or disability
of the choke mechanism.
(b) Inlet Manifold:
Part number 8ISF 9425 JF or (V84FB9425AA)
or (V84FB9425BA)
Material Cast aluminium alloy
Internal finish As cast
Dimensions at gasket face
As sketches below
Inlet Valve 6088114
(c) Exhaust Manifold
Part Number 8ISF 9430 CJ
Material Cast Iron
Internal finish As cast
Dimensions at gasket face
As sketches below
Exhaust Valve 6162461
(d) Cylinder Block
Part number 81SM 6015 CMA
or 86SM 6015 BA
Number of cylinders 4
Material Cast Iron
Bore 79.94/79.98 standard bore + 0.50
re-bore allowance
Stroke 79.42/79.62
Swept volume 398.7 - 405.19 per cylinder
Total volume 1594 -1620.77 c.c.
It is permitted to reclaim engine blocks by fitting liners or by
boring by 0.5 m.m. i.e. to a maximum dimension for the
cylinder bore of 80.48.
(e) Crankshaft.
Part number 81SM 6303 CH
or 86SM 6303 BAA
Material Cast iron (Nodular)
Finish As cast/machined
(f) Connecting rod:
Part number 81SM 6200 CB
Material Forged steel
Finish As forced
Weight 564,5 +/- 6.5 gms
(g) Flywheel
Part number 81SM 6375 KE or
86SM 6375 AA
Material Cast iron
No lightening /machining allowed. Minimum weight 6.5 kgs.
(h) Cylinder Head
Part number 81SM 6090 ARH
Material Die cast aluminium
Tract finish As cast
Combustion chamber volume 53.3 - 56.0 c.c.
Combustion chamber finish Fully machined
(i) Camshaft:
Part number 81SM 6251 LD or LE
or 88SM 62512 (6186554)
Material Cast iron
Inlet Exhaust
s=22.35
21.842
t=16.256+/-.04
15.748+/-.04
u=32.512
31.496
The figures above relate to camshaft 81SM 6251 LD or LE. If
you choose to use camshaft 88SM 62512 then its specification
Should match the reference camshaft held by the SMRC.
Duration (In & Ex) 208 decrees Angle between major axis =
134 degrees
Cam profile is defined by determination of lift at various angles.
Cam lift in millimeters (dismounted camshaft)
Inlet and exhaust profiles identical
0 = 6.1 mm.
Degrees Degrees
-56.0mm +5 6.0
-10 5.9mm +10 5.9
-15 5.6mm +15 5.6
-30 4.2mm +30 4.2
-45 2.0mm +45 2.0
-60 0.2mm +60 0.3
-75 0 +75 0.1
-90 0 +90
-105 0 +105
-120 0 +120
-130 0 +130
-150 0 +150
S c o t t i s h M o t o r R a c i n g C l u b 36 Y E A R B O O K 2 0 0 8
Standard timing pulleys MUST be used. It is not permitted to
use vernier timing pulleys.
Valves:
Inlet valve head diameter
42.0
Wet valve maximum lift (checked with solid lifter)
10.1
Exhaust valve head diameter
37.0
Exhaust valve maximum lift (checked with a solid lifter)
10.1
(k) Valve Actuation
Valve Users - part number
81SM 6500 D2E
Valve lifters - Hydraulic
Rockers - part number
81SM 6564 EE
Valve springs - part number
81SM 6513 AE
Number of coils 6
Wire diameter 32.7
Maximum free length 47.2
Piston:
Part number 81SM 6102 DA
Material Cast aluminium
Number of rings 3
Weight - Piston, pin and 3 rings
506 gms minimum
Where engine block has been reclaimed by re-boring as
specified the appropriate oversize pistons
and rings may be fitted.
Compression Ratio - Maximum:
Head casket - compressed thickness
1.64 m.m. minimum
Head casket - volume allowance
Vg = 8.7 c.c. minimum
Combustion chamber volume in head
Vh = 53.3 c.c.minimum
Piston volume above block face
(including allowance down to top ring)
Vb 18 c.c. maximum
Compression Ratio v + I
400 +1 = 10.1 maximum
Vh + Vg - Vb
53 + 8.7 - 18
(n) Exhaust manifold heatshield part number - 8ISF 95596AA
must be fitted.
SOME OF THE PART NUMBERS LISTED ABOVE MAY BE
SUPERSEEDED BY THE FORD MOTOR COMPANY, IN
THIS EVENT DIRECT REPLACEMENT FORD MOTOR
COMPANY PARTS MAY BE USED. IT IS STRONGLY
RECOMMENDED THAT YOU OBTAIN PERMISSION IN
WRITING FROM AN ELIGIBILITY SCRUTINEER BEFORE
THE FITTING OF ANY SUCH REPLACEMENT PARTS.
(a) Carburettor.-
Make Weber
Type Twinchoke
Number on engine One
Number of main venturi Two
Maximum dia. main venturi 24 (p) 25 (s)
Maximum dia. of throttle barrels 32 (p) 34 (s)
Maximum dia. at inlet manifold 34
Carburettor may not be modified except for parts controlling
quantity of fuel, and the removal or disability
of the choke mechanism.
(b) Inlet Manifold:
Part number 8ISF 9425 JF or (V84FB9425AA)
or (V84FB9425BA)
Material Cast aluminium alloy
Internal finish As cast
Dimensions at gasket face
As sketches below
Inlet Valve 6088114
(c) Exhaust Manifold
Part Number 8ISF 9430 CJ
Material Cast Iron
Internal finish As cast
Dimensions at gasket face
As sketches below
Exhaust Valve 6162461
(d) Cylinder Block
Part number 81SM 6015 CMA
or 86SM 6015 BA
Number of cylinders 4
Material Cast Iron
Bore 79.94/79.98 standard bore + 0.50
re-bore allowance
Stroke 79.42/79.62
Swept volume 398.7 - 405.19 per cylinder
Total volume 1594 -1620.77 c.c.
It is permitted to reclaim engine blocks by fitting liners or by
boring by 0.5 m.m. i.e. to a maximum dimension for the
cylinder bore of 80.48.
(e) Crankshaft.
Part number 81SM 6303 CH
or 86SM 6303 BAA
Material Cast iron (Nodular)
Finish As cast/machined
(f) Connecting rod:
Part number 81SM 6200 CB
Material Forged steel
Finish As forced
Weight 564,5 +/- 6.5 gms
(g) Flywheel
Part number 81SM 6375 KE or
86SM 6375 AA
Material Cast iron
No lightening /machining allowed. Minimum weight 6.5 kgs.
(h) Cylinder Head
Part number 81SM 6090 ARH
Material Die cast aluminium
Tract finish As cast
Combustion chamber volume 53.3 - 56.0 c.c.
Combustion chamber finish Fully machined
(i) Camshaft:
Part number 81SM 6251 LD or LE
or 88SM 62512 (6186554)
Material Cast iron
Inlet Exhaust
s=22.35
21.842
t=16.256+/-.04
15.748+/-.04
u=32.512
31.496
The figures above relate to camshaft 81SM 6251 LD or LE. If
you choose to use camshaft 88SM 62512 then its specification
Should match the reference camshaft held by the SMRC.
Duration (In & Ex) 208 decrees Angle between major axis =
134 degrees
Cam profile is defined by determination of lift at various angles.
Cam lift in millimeters (dismounted camshaft)
Inlet and exhaust profiles identical
0 = 6.1 mm.
Degrees Degrees
-56.0mm +5 6.0
-10 5.9mm +10 5.9
-15 5.6mm +15 5.6
-30 4.2mm +30 4.2
-45 2.0mm +45 2.0
-60 0.2mm +60 0.3
-75 0 +75 0.1
-90 0 +90
-105 0 +105
-120 0 +120
-130 0 +130
-150 0 +150
S c o t t i s h M o t o r R a c i n g C l u b 36 Y E A R B O O K 2 0 0 8
Standard timing pulleys MUST be used. It is not permitted to
use vernier timing pulleys.
Valves:
Inlet valve head diameter
42.0
Wet valve maximum lift (checked with solid lifter)
10.1
Exhaust valve head diameter
37.0
Exhaust valve maximum lift (checked with a solid lifter)
10.1
(k) Valve Actuation
Valve Users - part number
81SM 6500 D2E
Valve lifters - Hydraulic
Rockers - part number
81SM 6564 EE
Valve springs - part number
81SM 6513 AE
Number of coils 6
Wire diameter 32.7
Maximum free length 47.2
Piston:
Part number 81SM 6102 DA
Material Cast aluminium
Number of rings 3
Weight - Piston, pin and 3 rings
506 gms minimum
Where engine block has been reclaimed by re-boring as
specified the appropriate oversize pistons
and rings may be fitted.
Compression Ratio - Maximum:
Head casket - compressed thickness
1.64 m.m. minimum
Head casket - volume allowance
Vg = 8.7 c.c. minimum
Combustion chamber volume in head
Vh = 53.3 c.c.minimum
Piston volume above block face
(including allowance down to top ring)
Vb 18 c.c. maximum
Compression Ratio v + I
400 +1 = 10.1 maximum
Vh + Vg - Vb
53 + 8.7 - 18
(n) Exhaust manifold heatshield part number - 8ISF 95596AA
must be fitted.
SOME OF THE PART NUMBERS LISTED ABOVE MAY BE
SUPERSEEDED BY THE FORD MOTOR COMPANY, IN
THIS EVENT DIRECT REPLACEMENT FORD MOTOR
COMPANY PARTS MAY BE USED. IT IS STRONGLY
RECOMMENDED THAT YOU OBTAIN PERMISSION IN
WRITING FROM AN ELIGIBILITY SCRUTINEER BEFORE
THE FITTING OF ANY SUCH REPLACEMENT PARTS.
Last edited by alistairolsen; 10-03-2009 at 08:47 PM.
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