Engine blueprinting is the
process of setting every tolerance in the engine to its optimum value.
Engines from the production line are often quite “baggy” with gear
changes feeling notchy from incorrect shimming, vibration from poorly
balanced cranks, rough low speed running from valve clearances being too
large - generally speaking the performance of an engine can be improved
dramatically. After blueprinting and very
fine crank balancing, gear changes will feel more positive and
vibrations will be virtually eradicated, reducing strain on the engine,
aiding longevity. Valves will seal correctly, piston to head clearance
(squish) will be optimised and cams will be finely timed bringing your
bike’s performance right up to scratch.
You get ... All
components cleaned de-carbonised and inspected, clean sludge from crank,
polish journals, plastigauge crank journal and fit with the correct
specification bearings, shim crank, primary, secondary shafts and
selector drum, check piston ring end gap, set squish, hone cylinders,
lap valves, set valve clearances, dial cams to specs, check piston to
valve clearance when fitting cams big and valves. NOTE valve
clearances are set to a tighter spec of shimming meaning clearances do
not need maintenance for a very long time afterwards.
Performance parts such as
pistons, big bore kits, cams etc, supplied by the customer or through
CJS can be fitted free whilst your engine is being blueprinted or having
a super set-up. Customer supplied parts must be cleared for
quality by CJS first.
Cylinder heads are optimised
by flow bench using the latest digital software. See Cylinder Head Prep
pages and related articles "The Flow Bench" and "Power in the Head".
CJS knows that each engine has its own little area where
cost effective modifications can be applied. These
include optional cam settings, re-shaping ports and
combustion chambers. Some Ducati cylinder heads can be
sufficiently milled to give a substantial increase in
compression ratio and power without purchasing expensive
pistons (see 916 projects page). Whilst blueprinting
your engine these cost effective modifications can be
provided at extra cost. This can be discussed during your
initial consultation on specification requirements.