stock tb size
04-25-2006, 02:53 PM
#1
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stock tb size
anyone know the exact measurement on the 2.2 tb size? i took a tape measure to mine earlier and got 69mm on it....is this right?
04-25-2006, 02:56 PM
#2
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no, thats totally wrong, you measured it from metal to metal. You have to measure from one end of the actuall throttle plate to the other.
I don't know the exact size but I'm thinking 48 ish mm.
I don't know the exact size but I'm thinking 48 ish mm.
04-25-2006, 03:06 PM
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maybe at the plate if that, I want to say it's 52-55mm though at stock bore.
mine is ported out now to about 68mm. I think your original attempt at measureing was off.
mine is ported out now to about 68mm. I think your original attempt at measureing was off.
04-25-2006, 03:11 PM
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Well when I still had my 2.2 we compared the TB to that of the 90mm GTO's and the cobalt's was roughly half so I'm going to have to go with 45 - 48 mm stock although I could be wrong
04-26-2006, 11:05 PM
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well after tonight the tb is nowhere near stock size i ported it out tonight...ill be taking pics tomorrow and let everyone know if there is any throttle response difference
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