bike throttle bodies center to center info needed

[Surt]

hi all, gunna convert a civic carb'ed motor into efi using bike throttles (i've already made it with a single civics tb, now gunna remake it anew) so i need the info on center to center distance of apparently 250-400cc bike thanks in advance

[DonTZ125]

What TBs were you planning to use? There aren't a lot of small multi-cyls around using EFI. Several scooters and 125 singles, but from what I've seen it jumps to the 600s before you see 4-cyl motors. The '03-05 R6 TB rack (also the '06+ R6S) lends itself nicely to separating and space adjustment.

See also:
http://www.microsquirt.com/viewtopic.php?f=29&t=6627

[Surt]

What TBs were you planning to use? There aren't a lot of small multi-cyls around using EFI. Several scooters and 125 singles, but from what I've seen it jumps to the 600s before you see 4-cyl motors. The '03-05 R6 TB rack (also the '06+ R6S) lends itself nicely to separating and space adjustment.

See also:
http://www.microsquirt.com/viewtopic.php?f=29&t=6627

thanks heaps DonTZ125 i searched for it but never guessed to look into microsqurters
no preferences at all as far as they'd fit my motor! gonna check out the r6 tb's right out, thanks again mate!

[Surt]

03-06 r6 throttles r having cv chamber therefore r looking like carbies and r pretty big another question is how to make cv chambers (with secondary butterflies er?) to work properly under boost or better of removin' em at all?

[Surt]

just measured ФФ on my motor: 63 - 102 - 63mm; ID - 34mm ( bored of 32mm) thus as most bikes tbs r spaced from 75mm all i can hope is some scooters tb

[DonTZ125]

Wow - 63mm C/L?? What size is your engine?!

[Surt]

450mm wide - its a long stroker! and the heads gas channels run a tad awry thats why 63-102-63. i guess i'll have to make the tbs from scratch well im getting used to doing so