fiatboy
True Classic
Work a little bit on the engine this week-end
New polyurethane bushing for the dog bone
next dismantle the engine and mesurement
crankshaft journal and main on spec (standard)
have to change bearing
cylinder in spec between 86.001-86.030 no out off round no tapper(0.0001)
piston in very good shape and in spec
1-2-3 are 2495C 85.94 on spec
4 are 2495E 85.96 on spec
ring are out
thickness exemp cyl 1 ring 1 spec 1.478-1.490
reading 1.423
ring 2 spec 1.978-1.990 readiong 1.874
ring end gap (photo not clear) for all cylinder the ring gap in cylinder was about 1/8 or 3.175mm suppose spec 0.45mm
the spec for the piston ring groove width dont match with my piston
the groove for all my piston are
1 1.71 spec 1.535 to 1.555
2 2.03 spec 2.030 to 2.050
3 3.93 spec 3.967 to 3.987
the crankshaft front cover where are the seal the hole is out of round normal or not
before I unbolt the connecting rod from crankshaft I remark a little movement( at the journal) from front to back of the rod for all 4 piston (slide front to rear but thousand of an inch)
New polyurethane bushing for the dog bone
next dismantle the engine and mesurement
crankshaft journal and main on spec (standard)
have to change bearing
cylinder in spec between 86.001-86.030 no out off round no tapper(0.0001)
piston in very good shape and in spec
1-2-3 are 2495C 85.94 on spec
4 are 2495E 85.96 on spec
ring are out
thickness exemp cyl 1 ring 1 spec 1.478-1.490
reading 1.423
ring 2 spec 1.978-1.990 readiong 1.874
ring end gap (photo not clear) for all cylinder the ring gap in cylinder was about 1/8 or 3.175mm suppose spec 0.45mm
the spec for the piston ring groove width dont match with my piston
the groove for all my piston are
1 1.71 spec 1.535 to 1.555
2 2.03 spec 2.030 to 2.050
3 3.93 spec 3.967 to 3.987
the crankshaft front cover where are the seal the hole is out of round normal or not
before I unbolt the connecting rod from crankshaft I remark a little movement( at the journal) from front to back of the rod for all 4 piston (slide front to rear but thousand of an inch)
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