What size Jota carbs

we have these inlet manifolds programmed if you want a set Quentin, just a matter of loading the program into the VMC and pressing the button, twice
made them to suit a Phil Todd ported 750 head
very much doubt you could remove any more material from the ports than the head that these were made for

Custom inlet manifolds
 
Look the goods, Red. See what you mean by 'large'! I think I recall you had to make another pair for a heavily modded head with oblique shapes stubs?

I've got a pair of reinforced full rubber stubs (I think from a big Yamaha twin of 70s vintage - XS650/750?) that Lee bought to try EIs on the dyno in Perth. They seem to stretch perfectly out to 39mm when the FCR39 male adapters are squeezed in. if that doesn't work, I'll definitely request your two-click solution. Would take me about 10 hours to make my own!  :o
 
Piranha Brother 2 said:
Look the goods, Red. See what you mean by 'large'! I think I recall you had to make another pair for a heavily modded head with oblique shapes stubs?
Click to expand...

I think thats my head, one of Doug Homes experiments in porting.
 
Piranha Brother 2 said:
I've got a pair of reinforced full rubber stubs (I think from a big Yamaha twin of 70s vintage - XS650/750?) that Lee bought to try EIs on the dyno in Perth. They seem to stretch perfectly out to 39mm when the FCR39 male adapters are squeezed in.
Click to expand...

I have a similar configuration on my 1000 SFC (original head with 36mm inlets): I took some 32mm alloy stubs, got them tappered from 36mm (engine) to 39mm (FCR-Side) and outsie to 40mm (which was the inner diameter of the reinforced rubber stubs). I cooled the alloy stubs down to minums 5?C and they fitted nicely into the rubber stubs. Both get mounted on the bike together (had to drill the holes of the rubber stubs out a bit to get the screws perfectly in).

cheers

Lothar
 
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