crank bearings, help?

[Sloth]

my c20ne has low oil pressure until 4k rpm when the light goes out, and number 1 cylinder is knocking. what i want to know is,

1. are crank bearings available in +20, +40 and +60 thou oversize?
2. what make of bearing should i be after? glyco?
3. would you change the oil pump too?
4. if so, gm pump or one from autovaux?

cheers.

rob

[mowgli]

glacier, ks, or any that the engineer supplies after its been ground.

simply get a gear kit & relief valve. the rest of the pump should be ok... my mums mk1 astra 1300s (owned from new) did what yours is doing & we found the back had come unscrewed off the oil pump.. i codged it back on & it ran ok for a couple of years

[Sloth]

iok cool. i've just rang the local machinists, they want £150 just to check and grind the crank. plus another £150 to supply and fit a set of o/s bearings. think im gonna get another engine.

[djbrowney]

just buy another crank and bearings !

[mowgli]

agreed, if you can get one for reasonable money.

[Andy]

was that at alex carr's or engine and gearbox centre rob?

[Markd89]

if you ring alex carrs, say john from mgr autos sent you with black scooby ( discount )

engine and gbox center are a rip off

[blue_peg_16v]

thought autovaux pumps were genuine gm?

[Sloth]

alex carrs lads. im not sure i had been told that autovaux were using aftermarket ones.