throttle body question

[gmctruck68]

what is the stock mm of the throttle body on the 91 si crx, and what is an acceptable upgrade? found a blox 66mm throttle body on ebay is that a good one?

 

[jlicrx]

stock throttle body is 55mm - the only throttle bodies that fit the 88-91 CRX/Civic D16A6 intake manifold are the 88-91 CRX/Civic D16A6 and 88-89 Integra D16A1 - all of the 92 and up throttle bodies have a different bolt pattern - unless you have some serious internal mods, going larger than a few mm with the throttle body is just going to slow the car down

 

[gmctruck68]

reply

i am going to rebuild the bottom end, new rings, hone job, new bearings, and i have a venom intake manifold im going to put on it, i was thinking with the addition of bigger injectors and a chip in the computer, would i benefit from a larger throttle body, i would need a larger throttle body if im going to add that venom intake right? and i wanted to turbo as well, just a street set up

 

[efhondakid]

TB size should be matched to the cam profile you are running, stock cam, stock TB.