![]() When that's done, you're ready to start flycutting. Here's the final product (note the small hole in the center): If you tape it off well enough, a piston can produce so much suction that it will rip your fresh masking job. However, you will need to punch a small hole in the center of each cylinder to allow air to escape or be drawn in. Tape off the ENTIRE deck so there are no paths for grit to get into. Now clean off the deck of your block with whatever you choose, but make a final pass with lacquer thinner or electronics cleaner so your masking tape will stick. You should be left with something that looks like this: Cut out 8 discs for the intake side, then switch to your exhaust cutting pipe and cut out 8 more ( this is optional, as I only needed clearancing on the intake side ). If you have a pipe end that you could slide over the end of the exhaust tubing, that would be VERY helpful here. If you don't have a press, lay your sandpaper on a block of wood grit side down and use a hammer to strike the tubing to "cookie cutter" out a disc. We used a press with the aforementioned piece of exhaust tubing which gave us accurate, repeatable results. First you will have to cut out your sanding discs. Now that you have everything needed, let's get started. This bevels the top edge of the cut to eliminate hot spots in your combustion chamber. Having a slightly larger diameter disc causes the paper to cut slightly larger at first, then closer to the actual valve size as pressure is applied. If you have larger valves, you could chamfer the inside edge until you get a suitable diameter, or you can use any sort of round tube that you can just barely fit around your valve. exhaust pipe with the outer edge chamfered to make it sharp for cutting. You could even make one out of a thin piece of bar stock.Ħ) Shop Vac - to suck up all the aluminum and grit that's produced during cutting.ħ) Some sort of cutting tool to make small sanding discs slightly larger than your valve. We used a small flat wrench that measured. If you do this correctly, there will be no path for anything to get inside.ĥ) Some sort of tool that can be inserted between the chuck and the top of the valve seal to give repeatable depth results. We used a Milwaukee 28V cordless.Ĥ) Masking Tape - Tape across the entire deck on both sides to keep grit from contaminating your engine. If you have larger valves or do not have an extra head, USE ONE OF THE HEADS YOU ARE PUTTING ON YOUR CAR! This method of flycutting will absolutely NOT damage your cylinder head in any way unless you really screw something up.ģ) Either an air drill or a cordless drill with a lot of power. It was free for me because I already had the materials needed, but if you have to pay over $5 to do this, you're doing something wrong.ġ) Adhesive backed sandpaper, I used 40 gritĢ) Stripped cylinder head - I used an old one I had lying around because my ported heads have stock size valves. That wasn't in my budget, so I started brainstorming and came up with an idea that works perfectly and costs barely anything. The only other option is to rent a tool to do the job and that too costs about $200 to use. Add one for the exhaust and you're looking at $200. Unfortunately, the cheapest tools I could find we're over $100 and that was just for a single cutter and mandrel. 055 on the intake side, so they needed to be flycut. While degreeing the cam in my new LS1 build, we found that my piston to valve clearance was only. If you have any problems with the registration process or your account login, please contact us! Thus, we will have get togethers, casual cruises, events, and such like that, but this is not an exclusive club and it's 100% free to join this site! So what are you waiting for? Register now! The most important thing to know about the Michigan FBody Association is that we are NOT a club! The Michigan FBody Association is open to everyone, and is a community. ![]() We are the host of the premiere all-FBody event in the Great Lakes area - the Annual Michigan FBody Meet & Greet Car Show. was created to allow for an easy one-stop place to find out what's going on in Michigan as far as FBody events, to find out what clubs are available in your immediate area, and for an easy place to post classifieds for items you want to sell! Our goal was to create a more close-knit community of FBody enthusiasts in the state of Michigan, and to bring Camaro and Firebird enthusiasts alike together for some amazing FBody events! The Michigan FBody Association is a centralized website for FBody enthusiasts to discuss what's going on in the Michigan area. Welcome to the Michigan FBody Association website.
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