Casting Lines

[Bayrunner]

I have a question for you guys.

When re-building, is it worth the time to polish and remove the casting lines from the Block? I was looking at the casting lines by the cylinder walls and past the main bearings especialy.

Thanks

 

[Lazy JW]

Not unless you plan to make something in excess of 2 horsepower per cubic inch. Those casting lines "may" cause stress risers under heavy load but you will never notice any improvement on a street driven vehicle and probably not on a race-only engine either.

That said, it sure doesn't hurt to grind them smooth. I never have been that bored though.
Joe

 

[rbohm]

8) joe is right, it wont hurt anything to take the time to smooth them down, but unless you are going racing, you dont need to take the time either.

 

[Bayrunner]

some of them are pretty awfull. Cleaning them up wouldn't hurt.

Thanks

 

[The Plankster Prankster]

if you do grind em off, take extra care to wash everything again, nothing worse than leaving that grinding dust in there when you build it