Initially I was hoping for 180hp ate using hydro cams but now with 312 degree, 11.5mm lift cams solid lifters matching springs, 1997cc, bigger valves & light porting 210+ hp ate. Well see how the budget goes if I can sell another car to go all the way.

I could bore the 45s an extra 3mm but not cheap unless I can get my engine reco place to do the machining for good price then use hyundai or other 48mm butterfly. Yet wont idle well with race cams compared to efi & by the time I mod & tune carbs I could go cheap injection.

I have to ask - what sort of rpm/horsepower are you chasing out of a ca18 that 45 dcoe webers aren't going to do the job?

they sure are made by obx problem with 1st lot is 48mm vs 50mm

Yes, the S2000 ones are different, but the ones in the previous pictures are the same. They don't have injector bosses, just a piece that bolts on the front which adds injector bosses.

Not saying it's not a good price, just saying they are probably made by the same people...

Heres the 50mm honda s2000 ones for reference
would just need injector bosses filled up

Attach file:

---

  obx s2000 itb.jpg (62.00 KB)


  s2000 itb obx.jpg (60.04 KB)


  obx itb s2000.jpg (60.15 KB)

Actually very different, look at pics carefully & see they have inj bosses on diff. places & also much larger sizes for throttle plates with some incorporating tapered shafts.

For the price cant go wrong at 75usd a pop for 48-50mm

i'm looking into designing a set of these for a a12 also a efi kit too

The throttle bodies themselves look exactly like the ones from a 20V 4AGE engine. Might be an option to try and find a set of those, but they would probably be the same price.

EDIT: And the Toyota ones also come in 43 and 46mm.

Attach file:

---

  034.jpg (85.86 KB)

He can do the same price for 50mm

$300 for this but longer horns

Attach file:

---

  TB excluding marked in red.JPG (64.56 KB)


  tb wihout required in red.jpg (37.79 KB)