Blueprinting

[spunagain]

What does "blueprinting an engine" mean? I have heard it can be costly but can release much torque and BHP without changing the spec of the engine - how does this work.
Thanks
Spunagain

[IPAddis]

As I understand it, blueprinting is going over the engine and making sure that every measurement is to the exact design spec. i.e. each cylinder would have exactly the same dimensions and the swept volume would be exactly the same between the cylinders, etc.

Not sure that it can release that much extra BHP though.

Ian A.

[deltaf]

Optimisation of tolerances. Thats all it is. Its one way of releasing power, but its not necessarily the best way.

[Mr2Mike]

Not the most cost effective method, but some classes of motorsport heavily restrict/ban any mods to engines. In this case blueprinting may be the only way of giving you engine the edge over your competitors, or at least putting you on equal ground.

[Incorrigible]

deltaf said:

Optimisation of tolerances. Thats all it is. Its one way of releasing power, but its not necessarily the best way.

You end up with a "standard" engine, it's why any serious team in a single make race series will do it, to get as close as possible to the edge of the rules

For a road car you're better off bolting on non standard stuff, turbo, bigger carb, bigger engine etc

[spunagain]

Thanks all, I will probably go for gas flowed heads and manifolds to help out the free flow filter and exhaust I have already.
Cheers
Spunagain

[boosted ls1]

The above is true but you can gain more. You can use file fit rings to increase performance, you can reduce friction and pick up more revs.You can reduce internal weights/masses. It all helps to make the engine much smoother. If you don't increase the rpm you will still find the engine more responsive and quicker off the mark. Dealing with squish issues will liberate extra power as well. Then there's oiling issues such as improving the junctions within the oil galleries to make the oil flow more readily. You could pick up more power by fitting a turbocharger but combine both and the results would be better still.