did a search here and a quick google scan but haven't found the info i'm looking for.

what is the stock prelude tb inner diameter? is it 62?

does anyone have an rc engineering one?

last night we modified a prelude one (marked "prelude 93") to fit my gsr. we were unsure what size it was because of the shop's cheap crappy calipers. seems like roughly 1mm bigger than my very old, POS jg tb which was supposed to be 64 so we were guessing 65. (66 sounds cooler )

fyi, the mod is extremely simple. just involves zip-tieing the map to the firewall and running one tiny vacuum line. i've never heard of someone doing this... (and don't ask why i did, it's a long story )

tia.

-g

 

so...it's looking like stock is 60, type-s is 62.

according to this: http://asia.vtec.net/beystock/honda/preludes/

 

Well, my JG TB was supposed to be bored to... 64? I think it started off at 60 like he said.

Don't hold me to that number 100%, I haven't played with it or the numbers in over a year.

 

ok, thanks. i think TBs from rc can also vary maybe depending on what you ask for so i don't know what the hell i have now. my old jg might have been 63 all along and now i have 64.(???) oh well. maybe i can buy/borrow some good calipers and just measure the damn thing again...

 

not a bad idea. lol

Just remember not to go too big otherwise you kill the power.

 

you're gonna make me dig up my old line from high school:

that's what she said! ha ha haaaaaaaaa. boy that's old and played

 

but still very valid.