The 113's ended up 66-67 cc. With flat tops and stock rods the pistons were far down, so deck was milled .028.If you dont have a setup to perform cc'ing, a very close approx. can be had with $5 worth of equipment. A square piece of 1/4 in. plate glass, 1 60 cc syringe, and 1 30 cc syringe (both available at a farm supply). You position the plate over the chamber, leaving the smallest possible reveal at one edge, just enough to be able to get the fluid in with syringe. Another option short of buying a kit is to search on the net and find the 100 cc burette and stand at a surplus lab supply. I priced one last year and think it was under $10. Then only the chamber cover would be lacking.