I found that because of the cam it revvs clean and quick. but when accelerating hard it struggles round 6k. the 1 1/2 inch exh at the back is strangling it. it goes 2inch out of the extractors and 1 1/2 over the diff!!!
gunna put a 2inch on over the weekend

P.S. I know the injectors are small. They are good for over 100HP on the bike but they will easily make it run rich if the mixtures are not set right!! even at 7000rpm

You wouldnt need a cam change, but it would help you get the most from the upgraded intake.

I was just wondering, if i had that YZF fuel injection setup so i could easily tune with a system like megasquirt or someting similar, would i need a cam change?

I have fuel injection off a YZF-R6 yamaha using standard injectors (motorbike) for my A14 w/cam.

I picked up the bodies on ebay for $140 + postage
used my own computer (haltech f7) and ran a return line.

Used a surge tank fed by existing mech. fuel pump to a VL turbo EFI pump

Please send us some pics Lampy, i`m getting a Datsun 100A tomorrow for my wife, and i`m thinking of convert it to fuel injection through a bike carb setup.

What about the fuel pump? what mods are needed?

Puting four carbs on a 'standard' 1200 or A12 is not really such a good idea unless you also fit a cam that will take advantage of the induction's ability to feed it some fuel.

With a standard cam the engine will simply be overcarbureted.

yeah i'm doing the same. ideally i think you want something around 34mm but they are harder to find and more expensive than the 38 - 40 mm ones. I'm currently waiting for my 07 suzuki gsxr 600 setup from the US. cost me $135 delivered

i am using a set of carbs off a cbr1000 for my a12. Just about got the manifold made. Will post picks when done.

also going to use cb900 carbs for my a10 in the 1000

I was thinking about the carbs because is easy for a EFI conversion