PDA

View Full Version : blue printing?



the fat bastid
05-09-2003, 06:51 PM
so i was talking to this kid at my work who used to work at a machine shop.

he said that mass produced engines sucked hard, and hes seen crankshafts with slugs welded on and chuncks taken out and it still wasnt balanced. the bore size would be uneven, etc.

what other info can i get on this? and the process of fixing it called blue printing?

also, what exatcly make ford's live rear axel a live one as instead of just a regular ol' beam?

[note to self: check google BEFORE posting]
but i still have no ide about the live-axel

RF Overlord
05-09-2003, 07:05 PM
fat:

It's usually one word: blueprinting...

Blueprinting is the process of making sure that all the internal dimensions and weights are correct and matched...all the pistons weigh exactly the same, all the connecting rods are the same length, the crankshaft is balanced in all axes, the combustion chambers are all exactly the same volume, blah, blah, blah.

My understanding of a "live" axle is one like ours: a centre "pumpkin" with 2 tubes containing the axle shafts, all connected together, terminating at the brake backing plates/caliper mounts. A "live" axle is usually compared to an "independent" rear end, where the left and right axle shafts are exposed, with universal joints at both ends, allowing each wheel to deflect independently of the other.

RCSignals
05-09-2003, 10:38 PM
Blueprinting is a process of printing architectural or engineering drawings. They are either "white line" on a blue background or "blue line" on a white background.

As far as an engine goes, it's a process of ensuring an engine's specifications, tolerances, etc are brought up to the engineering specifications for the engine.

Sounds like your friend works in a shop that specialises in engines from the General