ORIGINAL: Frost_
1. Nobody uses boring to find performance, they do it to get the scratches out of the walls... The improvements are MINISCULE. A 350 at .030" only yields an extra 5 ci, just over a 1% increase in displacement.
2. Again, it isn't "because everyone else is doing it"
3. Your sleeve has a chrome or nickle coating, the sleeve itself is only made of brass... This coating gives the sleeve it's life; brass is entirely too soft... How do you guys intend to do this and leave the sleeve's layer of protection intact??
Look Frost, in number 1 and 2, your wrong. In formula racing
everything counts.
As far as porting and engine goes yes, go ahead. I have done it to all my RC engines and it can make a
noticable difference. This is when you match the size of all the openings to all thier counterparts. Notice I said match.
You want to be as exact as possible. Use calipers! Even if the exhaust manifold opening is bigger than that of the block there will be losses.
I doubt he confused the two but porting is a great and simple performance job. You can use a dremel for roughing and then use a small, fine file to finish is up.
Boring the engine block for a larger sleeve and piston is a good idea too - if you have some machining experience. You can't just do it with a twist bit and hand drill. You need access to a machine shop and some understanding of machining. Be very careful to let the block cool before measuring. It will expand slightly during the machining. Take frequent and presice measurements.
Good luck!
