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X-TECH MAN · 05-03-2010, 02:27 PM

One more thing to remember.....not all dial indicators measure the same. When I worked for the Dept. of the Navy I used to calibrate all kinds of precision tools. The standard or tolerance of a dial indicator is plus or minus .001 (one thousanth) of an inch. Some "OFF BRANDS" are allowed .002 plus or minus so use a quality brand such as Starrett or Brown and Sharp. If you check dead on at home there is always a chance you could be one over during tear down. Its best to be a few thou. under to be safe. A couple of thou wont make your run faster but it could get you DQed.
Same deal when C C'ing your chambers and runners. ALWAYS use a certified burette and rubbing alcahol with some food coloring in it and check your heads while at room temp. Hot cylinder heads could make your chambers come up a little short if your close to begin with.

05-03-2010, 02:27 PM	#1
X-TECH MAN Banned Join Date: Dec 2007 Location: Lake Placid, Florida Posts: 3,203 Likes: 1,047 Liked 235 Times in 110 Posts	Re: My Teardown @ St Louis..... One more thing to remember.....not all dial indicators measure the same. When I worked for the Dept. of the Navy I used to calibrate all kinds of precision tools. The standard or tolerance of a dial indicator is plus or minus .001 (one thousanth) of an inch. Some "OFF BRANDS" are allowed .002 plus or minus so use a quality brand such as Starrett or Brown and Sharp. If you check dead on at home there is always a chance you could be one over during tear down. Its best to be a few thou. under to be safe. A couple of thou wont make your run faster but it could get you DQed. Same deal when C C'ing your chambers and runners. ALWAYS use a certified burette and rubbing alcahol with some food coloring in it and check your heads while at room temp. Hot cylinder heads could make your chambers come up a little short if your close to begin with. Last edited by X-TECH MAN; 05-03-2010 at 02:57 PM.