#FLYCUT FORGED PISTONS FREE#

REmove head and look and see where it is making contact and where it needs to be cut. Re-install soft spring, retainer and locks. This should mark radials and where the valve is contacting the piston. Now with piston up the valve won't drop so you can remove retainer,lock, and spring.Д¬huck valve stem in a drill and spin it slowly applying pressure downward intermittently. Install head with either gasket size you intend to use or valve spring shims or washers of the same thickness to put the head in the right perspective to where it will be.Д«ring that piston up to tdc or 10 deg either way. Stick it on the face of an intake valve and an exhaust valve by rough cutting the two pieces out to fit the valves.ДЄfter the paper is stuck on the valve, with sissors trim it all around so it is the same size in dia as the valves. Get some stick on sandpaper like body ships use with D/A Sanders.

#FLYCUT FORGED PISTONS FREE#

You will not know that without a dial indicator on the valve or retainer getting tested in opening distance from lift to free travel. I don't understand how you are checking valve to piston clearance with clay and can tell at what point in degrees of rotation each valve is the closest and by how much. My thinking is that your valve notches may be deep enough but you are hitting the radial side of the valve on the radial side of the piston valve notch. The head may be different than what the piston was made for or something or some reason, let us say the valves are not exactly ling up where they should be for the notches in the piston, then the radial side clearance of the valve head to the notches in the piston would also be a mis-match. Possibly because of the valve angle mis-match, or maybe the valve spacing in You say the intake angle is 23 deg with what you have which would mean a 3 degree angle mis-match on valve notches in the piston from the git-go. It is likley those pistons were cut for a 26 degree intake valve notch which is standard for BB Chevy. Here is what I am reading into this from the info given. Has anyone else run into this problem and what was your solution short of buying a new set of special pistion? вЂњ Besides all that I called them about the application and was told that cam would not be a problem. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings. Valve reliefs are designed to accept oversized valves and long duration, wide lobe separation camshafts, they are also compatible with angle milled heads. Now the JE Piston web site states вЂњThese big block pistons have ring lands designed specifically for nitrous applications. 030 intake valve clearance at 10 degrees ATDC. 010 exhaust valve clearance at 10 degrees BTDC and. I clay the pistons and do my normal valve to piston check and am not happy with what I find. I throw the degree wheel on the crank and the cam degrees in perfect. I also selected Je Pistons B/B Nitrous Series. 748 lift and 112 lobe centers roller cam with the 4/7 swap. I didnвЂ™t want to go too crazy on the cam so I selected a Comp Cams grind 47S321R12 286 in & 296 ex. I have a older set AFR ported Dart 360 heads and manifold. I am building a 555 BBC using a Dart Big M block. I ran into a slight problem and would like to know if anyone found the same issue.

Flycut forged pistons