Re: Boring past .030
Rodbolt: Yes they used to bore out to the max in auto L6's.
I know i had a 71 nova, L6. And a 76' nova L6.
But what rpms was i turning? 1500-2000 ?
Not no 4600 rpms.
Also i wasn't running the car in salt water, and using it for cooling the motor, what you think the cooling jacket looks like?
In cars we use anti-freeze. Ain't rusting the block.
Rust alone makes it harder to cool the block.
Not that i turn that now, i only go wot for a minute or 2 till i test for the right prop and such.
And then i stay at 3000-3500 leave the extra rpm to get out of the way of the giant tankers and dredgers, or sea ferries all over the bay.
These are old motors, and as i have posted before, these ole girls got to be treated right or your gonna be needing a new motor.
I wasn't gonna stick my 2 cents in cause the other guys are handling it fine.
Op you check the mating surface, with the head real real good?
What i mean get a "magnafiglass"<spelled wrong.
Go over the surface real, real, good. See any hairline cracks, between the cyl. and cooling holes, bolt holes, or sides.
Check the corner holes most. The hole pulled up from a bolt, look on the sides good.
See a painted over crack?
Same with the head, see a hairline crack? Go over it real good.
Maybe you wont see it with the naked eye.