Boring and Sleeving
(Bore to next oversize, including plateau hone).
Prices exclude cost of piston and sleeve and do not include degreasing or cleaning.
|Car engine up to 4" bore size||4 cylinder||£120.00||£240.00|
|Car engine over 4" bore size||4 cylinder||£140.00||£280.00|
|Car'V' block up to 4" bore size||4 cylinder||£160.00||£320.00|
|Commercial engines up to 6" bore size||4 cylinder||POA||POA|
|Commercial vehicles over6" bore size||4 cylinder||POA||POA|
|Motorcycles etc||1 cylinder||£90.00||£180.00|
|Industrial and stationary engines||per cylinder||£90.00||£180.00|
|Wet liner boring||per liner||£110.00|
N.B. where it is necessary to carry out extra machining for the fitment of stepped flanged sleeves, counterbores, cutouts etc extra costs will be incurred.
Prices exclude cost of pistons and sleeves and do not include degreasing or cleaning.
|Overbore Ford block to 83.5mm without sleeving||£180.00|
|Overbore Ford block to 83.5mm using sleeving||£360.00|
|Overbore Ford block to 85mm offsetting without sleeving||£190.00|
|Overbore Ford block to 85mm offsetting using sleeving||£380.00|
|Overbore BL or Ford 4 cyl block upto 1.5mm||£180.00|
|Overbore BL or Ford 4 cyl block upto 3.0mm`||£360.00|
|Overbore BL or Ford 4 cyl block upto 5.0mm||£360.00|
|Overbore Ford V6 Essex to 3090cc||£440.00|
|Overbore and sleeve Rover 3.5 to 4.0 litre||£640.00|
The latest 'Plateau Honing' technique requires a minimum stock removal of 0.0015" using three different grits. Piston manufacturers claim that this method considerably reduces piston wear in the early stages of running in.
Cross Hatch patterns are equally important to obtain sufficient lubrication to piston rings. Recent research carried out by several manufacturers has proved beyond doubt that detailed attention to exact bore finish specifications is justified.
Different manufacturers however specify varying finishes to suit specific bore and piston materials utilised and to suit the individual running characteristics of their engine. This variation in 'specified finish' results in wide ranging times for honing operations.
The following prices should therefore be treated as an approximate guide.
Prices vary according to time taken but some examples are:-
|Cross-hatch hone 4 cyls to deglaze only||from||£80.00|
|Cross-hatch hone 6 cyls to deglaze only||from||£110.00|
|Cross-hatch hone V8 to deglaze only||from||£110.00|
|Plateau hone 4 cyls to a specified size||from||£90.00|
|Plateau hone 6 cyls to a specified size||from||£110.00|
|Plateau hone V8 to a specified size||from||£120.00|