hi, building up an rb30 in my back shed, and the crankshaft has been worn about ten thou by both oil seals, just wondering if people have used a sleeve or just put it back as is and if so did it leak, idealy i would like to put a sleeve on but this would involve machining the crank, i'm trying to keep it cheap as possible, as i've blown enough cash on recent cars as it is. also one of the cylinders has a small score in it, but below what seems to be the travel of the piston, (which i did of course removing the piston, damn!), would i need to get the block bored now or will it be ok?
cheers for any help,
troy.