The Imp Site

Liners details

web page by Simon Trickett

Liners from these cars are suitable for the Imp block, though they will all need modifying or they won't fit.

Make
of Car		 Model
of Car		 Trim Level cc Year Bore
Sizes		 Suitable Bore
for Imp (mm)		 Suitable for
Sunbeam B1 Block
*70 ONLY if REBORE is NOT required
 Peugeot  205  L, GL, XE, XL  954  1983-1987  70  70* to 74  YES
 Peugeot  205  Junior, XL, XR, XS, GL  954  1987-1991  70  70* to 74  YES
 Peugeot  205  A, XL, XR,GL  1124  1986-1987  72  72.5 to 74  YES
 Peugeot  205  XA, XL, XR  1124  1980-1987  72  72.5 to 74  YES
 Peugeot  205  XE  954  1987-ON  70  70* to 74  YES
 Peugeot  205  XA, XL, GL, XRA  1124  1987-ON  72  72.5 to 74  YES
 Peugeot  104  Coupe ZL  954  1976-1985  70  70* to 74  YES
 Peugeot  104  L, GL, GR, ZA, ZL, ZR  954  1973-1983  70  70* to 74  YES
 Peugeot  104  Z, ZA  954  1984-1985  70  70* to 74  YES
 Peugeot  104  ZA  954  1978-1985  70  70* to 74  YES
 Peugeot  104  GL,GR, ZR  1124  1980-1985  72  72.5 to 74  YES
 Peugeot  104  GLS, SL, XS, SONGDAU  1124  1975-1980  72  72.5 to 74  YES
 Peugeot  104  S, SR, ZL, Coupé, Berline, GL 5  1124  1979-1985  72  72.5 to 74  YES
 Peugeot  106  XN  954  1992  70  70* to 74  YES
 Citroen  AX  10 E-TGE  954  ALL  70  70* to 74  YES
 Citroen  AX  11 TGE-TRE  1124  ALL  72  72.5 to 74  YES
 Skoda  Estelle  120  1200  ALL  72  72.5  NO
 Talbot  Samba  LE-LS  954  ALL  70  70* to 74  YES
 Talbot  Samba  GL  1124  ALL  72  72.5 to 74  YES
NOTES
The most important dimension is Dimension 'E' for a B1 Sunbeam Block it needs to be no less that 3.1299". For an Imp Block it needs to be no less than 3.0299" unless you need to go above 72.5mm Bore, in this case use the larger size.
All the above liners need modifying to fit the imp block. SEE DRAWING at BOTTOM OF PAGE
Dimensions for Liner CH 5326 20 Dimensions for Imp Liner
A = 89.20mm (leave) A = 3.385"
B = Bore B = Bore
C = 85.00mm C = 2.150"
D = 37.50mm (Mod) D = 1.900"
E = 79.50 (3.1299") E = ?"
You will also need to machine bigger flats on one side of each liner as they sit closer together in the Imp block (see drawing)
The Liners should stand 0.002"/0.003" proud of the Block face after all machining has been completed.
 
The PSA Group (Peugeot, Talbot and Citroen) have a nasty habit of changing engine parts without changing the engine type number. The Cylinder Liners in the table all utilise ONE rubber ‘O’ ring to seal the water jacket from the crank case. Some of these engines use a liner with FOUR rubber ‘O’ rings, due not use these liners the critical ‘E’ is wrong.
After the Liners have been modified, they should be set into the prepared Imp/B1 block using Loctite ‘648’ High Strength Retainer. You do not need to use a rubber ‘O’ ring.
Use Imp Pistons!
BORE Size

to

Give cc
70.00mm = 928cc
70.00mm +15thou = 939cc
70.00mm +30thou = 949cc
72.50mm = 998cc Long Stroke Option
72.50mm +60thou(74) = 1040cc Long Stroke Option

LINER DETAILS

Image1.gif (4659 bytes)

By Simon Trickett (S_Trickett@yahoo.com) update: 28 Mar. 1999

The distance the top of the liners sit proud of the (998) block top-face
The liner should be 0.003" above the block outer face (the term is squeeze). The outer joint for the Wills Rings should be between 0.021 and 0.025" thick. This should then give you a 0.015" compression on the Wills Rings.
If however you are using and old type joint or have had one made from copper and are not using Wills Rings then the liners need to be flush with the block.

Coollist archive: July 1998
tech index
Imp site home