Bearing Identification

[The Old One]

Hi All
I have a 76 16v sprint engine stripped and wondered if
any one can identify these numbers off the mains and
big end bearings that i want to replace.The crank journals
are very good condition but not sure of size of bearings.
Mains
030
143040 on one side


030
5103 on other side

Big End
030
145396 on one side
030
5104 on other side

Cheers
Tony

[john 215]

Hi Tony,

At a guess and it is just that, 030 refers to +30 thou. Which would indicate a regrind or two in its life. The only way to know for sure is to measure the journal sizes with a micrometer and compare to standard size.
According to a BL Sprint manual i have the standard size of bearing journals are-

Main Bearing- 2.1260 to 2.1265 inch or in new money 54.000 to 54.013mm


Big End Bearing- 1.7500 to 1.705 inch or in new money 44.450 to 44.463 mm


A 8 valve crank is the same as a 16 valve, so all may notbe lost!

Cheers John

LIVE LIFE A QUARTER OF A MILE AT A TIME!
1979 3.5 FHC(STATUS PENDING!!)

1982 2.0 DHC NOW A 4.6,ON THE ROAD NOW KICKING AR5E !!!!

[bmcecosse]

Definitely indicates 30 thou oversize bearings - to suit 30 thou undersize crank.

[The Old One]

Thanks Both
Where is best place to get bearings & rings?

Cheers
Tony

[bmcecosse]

Probably Rimmers- but do shop around! There are often some good Christmas Sales going! That's a Vandervell bearing shown.