How To Notch Pistons?!?!?
 

I've got my engine on a stand, and I'm not taking it apart. I don't have money for new bearings, etc. How do I notch my pistons to make my valves clear. (TFS Stage 2 cam, 1.90/1.60 valves with 1.6RRs). I've heard of using a Dremel, but what bit? I've also heard of using a grinder with a small grinding wheel, but I can't find anything smaller 3 1/2". Any other suggestions? I don't have access to an old set of heads, so getting the tool that sits in it is out of the question.

I am not sure of the company, but they do sell a bit, that you install in place of one of your valves, and put the other end in the chuck of a drill, and install the heads. It is the same size as the valves you are using and makes a perfect notch, as long as you don't cut too much. I saw it in one of the MM&FF articles.

RPM427, I appreciate that. But I don't have access to an old cylinder head to get the tool, not to mention to rent it the cost is quite high.

What I'd like to know is, what bit for a Dremel or a grinder do I need? And how should I use it?

I remember reading about that in MM&FF as well but don't remember who makes that tool. Call trick flow, crane and everyone else until you find this thing.

I never knew anybody made that tool. but that is the way we have done it for years except all we do is take an old valve epoxy a grinding stone to it. Making sure the stone is a little larger diameter mark a spot on the valve for a stop point (hose clamps work good if you don't put so much muscle behind them that the slide) an old head is a must because it is hard on the guides though. as far as trying to cut some with a drememl good luck i wouldn't do it. just make sure that you use a bit designed for aluminum.

Isky sells the tool, as does Manley. I believe you can also get it from BHJ Products.