for those that don't know i road race an accord with NASA. anyways i'm doing some intake work and was trying to get a hold of an h22 or h23 throttle body of which i was told were larger than the accord TB. so far i've bought one off of ebay, and looked at someone's locally and they were the same size as what is already on the accord (1994, f22b2), and parts car of the same year..

All four TBs, current racecar one, parts car, ebay one, and local guy's
inside diameter, filter side of TB
2 11/32 inches
59.53mm

inside diameter, IM side of TB
2 13/64 inches
55.95mm

(unfortunately i don't have a caliper on me for a precision measurement)

I also checked my 91 accord (PLUG: FOR SALE) which is completely stock, and....
inside diameter, filter side of TB
2 11/32 inches
59.53mm

So.....I've searched and found charts online, but i'm not sure what is actually 100% fact. Can anyone measure their h23 or h22 (specify 4th gen or 5th gen lude) TB and show your results? This would be awesome. Thanks...