I noticed on mazdatrix's website (and actually quite a few other home-based projects) people using 48 IDA carbs/EFI conversions on peripheral ports





I was curious, is there any bends off the peripheral sleeves (left to right, not up and down) before hitting the 48 IDA, or no?



Essentially I'm curious, if you took a flange for a 48 IDA, layed it on top of an assembled shortblock, would the centre of the holes on the flange match the centre of the rotor housings, or is the distance centre to centre on the rotor housings slightly larger (or smaller for that matter)?





Just seems to me in pictures there are no left to right bends, the distance of the 48 IDA seems to match the 13B rotor housing centre to centre?

 

LAZY



MOTHER



******









bottom left picture, click;





http://www.jenvey.co.uk/drawings/ta_bw.htm





centre spacing appears to be not quite the same.

 

I figured as much







I was curious if someone knew offhand, or something, rather than drive 45 minutes to my car to take one measurement





That's actually the website I was looking at for TBs, I didn't know if (out of their selection) it was the one with the 90mm spacing or the 120mm spacing..



I'm not well versed the carb stuff

 

Slide throttles all the way!

 

Thats a scary design.

 

and an ineffeciant one!

Of course I have a working one to compare it to

 

Stop teasing!

 

Centre to centre of the rotor housings is 130mm on a 13b. The IDA flange shown there is 120mm. The other flanges are 90mm.

 

so the ida IS a perfect fit on a 12a?