Specifications
Small Chassis Triumphs
Our range of engines are all
unleaded, all components are new unless otherwise specified, and the unit comes
built up and ready to fit
We are able to offer this
service on either your own unit, or if you prefer on an exchange basis with a
surcharge applicable until such time as we receive a useable return unit
For pricing details please see our 'engines'
page
 Work to be carried out
STANDARD ENGINE
Acid dipped to clean
To strip down engine and check
components for wear
Regrind components to clean
Re-bore engine block to next economic
size overbore
Right - final cleaning of engine parts prior to painting
Left - engine parts painted and waiting for building up
STAGE I additional to STANDARD
Surface
grind engine block face
Re-grind crankshaft, tuft ride crank
and micro polish
Lighten flywheel and fit new ring
gear
Balance con rods end to end and match
all four weights
Match weights on pistons to balance,
and height to deck of block
Balance crankshaft, flywheel, clutch
and pulley together
Skim head to raise compression ratio
Front alloy engine block to be
re-heli coiled
STAGE II additional to STANDARD & STAGE I
Port head, gas flow, measure and
equalise combustion chambers. Equalise inlet ports
Match inlet manifolds and gaskets and
dowel to head
New items
fitted to engine
STANDARD ENGINE
Set of new inlet and exhaust valves
Set of new valve springs
New valve guides
Set of new pistons
Set of new main, big and small end
bearings
Set of new thrust washers
Set of new cam followers
Set of new high tensile con rod bolts
New
cam shaft
New alloy bodied angled pickup oil
pump
New standard timing chain and
tensioner
New standard camshaft & crankshaft
sprockets
New set of gaskets including Payen
head gasket, front & rear oil seals
New flywheel bolts
Fully reconditioned rocker shaft
New core plugs
Up-rated oil pressure spring and
relief valve
New crank spigot bush
New super high tensile head studs,
nuts and our own extra thick washers
All new external
bolts
STAGE I & II replacement or additional to STANDARD
New Duplex timing chain c/w tensioner
New Duplex camshaft sprocket
New Duplex crankshaft sprocket
New 3 piece Clutch assembly
Engine
when built up comes complete with
Front and rear engine plates
Flywheel fitted to engine
Front pulley and new front pulley nut
ready fitted to engine
New set Spark plugs
Oil filter
STAGE I & II additional to STANDARD
Clutch assembly ready fitted to
engine
4 cylinder engine built up and ready for fitment
Recommendation
JIGSAW recommend that our engines
are run on either Penrite 20/50 or 20/60 dependent on how hard the
customer wishes to work the engine. We
have found through our years of supply of Stage 2 and Race engines that these
oils are the best.
It is recommended that these
engines are best kept regularly serviced, with intervals of 6000 miles for
Standard units and 3000 miles for Stage I & II units, or every six months
whichever is sooner
Due to the nature of the
camshaft and the necessity for the engine to run richer, the oil and filter are
best kept clean, thus excess fuel does not result in thinning the engine oil.
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