crank bearings

[swedge]

following on from bubbas thread

my engine builder who gave my crank a polish gave me these bearings



they are labeled up as being from an opel 1.7td SOHC

now the big end bearing width is 19.3mm but ive just measure my crank and its nearer 21mm (early crank)


he gave me the wrong width bearing?

now for the main bearings

a bit of googling and i found this

http://www.ozparts.eu/5M2413-50?range=921%2C930%2C1283

it says the spec is

Min Std Shaft Size2.2828in/57.982mm
Max Std Shaft Size2.2833in/57.995mm

a c20xe crank is

mains, 57.982-57.995mm std
big ends 48.971-48.987mm std

so these will be fine ya? they were only about £50 for both sets

he said they are the same bearings the likes of sbd sell/use but for alot more money since they are for the "c20xe"

oppinions please

[swedge]

hmm just got an old bearing

which i think is from this crank, not 100% as i have a few rods and pistons lying around

[swedge]

someone else using them too

http://www.migweb.co.uk/forums/engin...e-rebuild.html

[Stuart]

Get some good old fashioned calipers! Digital ones are cak

[swedge]

good answer but will my 19.3mm bearings be ok on the wider journal?

[Bubba]

i just measured mine...early crank 20.6ish so that would be the 20.3 bearings.

Get some good old fashioned calipers! Digital ones are cak

how that if they are calibrated properly?

[Stuart]

how that if they are calibrated properly?

Well firstly you need to have sodding expensive digital,calipers to justify calibration (and even then they suck).
So cheap ones (sub£100) will be dire, then add grease to spoil the show and you will be off a long way
Retro ones rock never a flat battery when you need then either

[garyc]

http://www.migweb.co.uk/forums/engin...ng-widths.html

[Bubba]

our ones at work are calibrated every 6months. i think we got 60-70quid ones, and never had a problem with them. if they are good enough for what we measure (to H6 tolerances) id stick with them