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Jeremy · 04-29-2009, 05:35 PM

Not sure if everyone knows, but you have to be careful when measuring your port and chambers volumes because most burette's will not read the same.
The standard for a class A burette is 1% and a class B burette is 2%. I have checked many and found them to be as much as 1 1/2 cc's different on a 100 cc's. I checked two of NHRA's and they were 0.8 cc's different on a 100 cc's.
This is quite alot on a port volume and depending on which one is picked up may allow you to be legal or maybe not.
So make sure you have a safety margin and don't cut it too close.
Thanks

04-29-2009, 05:35 PM	#1
Jeremy Junior Member Join Date: Dec 2002 Posts: 95 Likes: 0 Liked 1 Time in 1 Post	Burette's Not sure if everyone knows, but you have to be careful when measuring your port and chambers volumes because most burette's will not read the same. The standard for a class A burette is 1% and a class B burette is 2%. I have checked many and found them to be as much as 1 1/2 cc's different on a 100 cc's. I checked two of NHRA's and they were 0.8 cc's different on a 100 cc's. This is quite alot on a port volume and depending on which one is picked up may allow you to be legal or maybe not. So make sure you have a safety margin and don't cut it too close. Thanks