Reference Materials

Honda Throttle Body Sizing Chart Inside Diameters (in mm) d15b7 - 56 d16a6 - 55 d16y7 - 56 d16y8 - 56 d16z6 - 56 ZC - 55 d16a1 - 55 d16a8 - 55 b18c1 - 60 b18c5 - 62 b18a - 58 b18b - 60 b16a SiR - 58 b16a Sir2 - 60 b16a2 - 60 b16a3 - 60 b20b - 60 b20z - 60 h22a - 60 h23a - 60 f20c - 62 f22 - 60 f23 - 60

United States Vs. European & Asian Octane Ratings In Europe 98-octane gasoline is common and in Japan even 100-octane is readily available at the pumps, but this octane nomenclature is misleading to Americans as foreign octane ratings are derived entirely differently from their own. So, like every other measurement system it seems that everyone else uses a different scale than the United States does, but unlike most other instances where we have had the good sense to create different units of measure(e.g., inch vs centimeter), in this case we all use the same name: Octane. Japan and Europe use a system called RON or Research Octane Number to determine the octane rating of their gasoline, while stateside we use a system called AKI or...

Miata.net has a great java applet for computing your new size when "plus sizing". No need to re-invent the wheel here. Have a look at their program. http://miata.net/garage/tirecalc.html

Special thanks to Wheelweights.net for letting us use this information way back in 2004. It appears that the original site is now defunct. Captured here for mirror and informational purposes. If you have a wheel to add, please make a post and tag @Briansol in it for review/inclusion. Wheel Weights Database Wheel Size Type Weight (lbs) 562 Fuel 17 x 7 Cast 26.5 562 Kabuki 17 x 7 Cast 27 5Zigen 5ZR Copse 16 x 7 Cast and Spun 15.7 5Zigen 5ZR Copse 17 x 7 Cast and Spun 23 5Zigen 5ZR Copse 17 x 7.5 Cast and Spun 23.5 5Zigen Becket FN-01R 15 x 7 Forged 10.6 5Zigen Becket FN-01R 16 x 7 Forged 11.7 5Zigen Becket FN-01R 17 x 8 Forged 14.6 5Zigen DIV .3 15 x 6.5 Cast 12.6 5Zigen Fireball Typhoon 17 x 7.5 Cast 21.5...

Well, I see a lot of weird stuff when people start talking about all these motors. I tried my best to gather it all from Hondas site into one place, hopefully it can help some of the confusion. If someone sees something I missed, let me know. This is a list Japanese models, and their respective motors, not USDM counterparts, those are pretty known already. I did not include B series models, even though they are mixed in the models and years through out, they are well documented already.... Bore, Stroke, and Displacements, will be coming soon...stay tuned source... http://www.honda.co.jp/HOT/ModelData/ DOHC non vtec ZC 135ps@6500/112lbs-ft@5000 75.0 X 90.0 1590cc 9.3:1 84-87 Civic/CRX Si 85-89 Integra Gsi/Rsi DOHC carbed non...