Quote:Well they were originally mounted across the bike frame & plenty of blokes seemed to get away with mono's which would point them down. Going up & down hills also changed the alignment, so I suppose they would work, but would recomend that if possible, when on a flat surface, that they sit in the same horizontal position as when on the motorcycle.

mikuni, but arent they the same thing anyways?

keihin..

pepper i think i have a set of carbs the same as those sitting around somewhere... are they keihin?

mine are 34mm

nice move. I too have a rack of bike carbs that will find their way onto one of my a series and more than likely into my ute.

What size are your carbs? There are quite a variety of sizes to choose from an i rekon our a series would benifit from the smaller end of the scale, on a road car anyway

I would also lie to know this however i would like to sit mine "upish" to clear my clutch master cylinder, after abit of visual research i have seen quaite a few pics with bike cars a wide variety of angles.

Jake

thanks dodgeman, exactly what i wanted to hear.
do these particular carbys have to sit flat, or can i aim them downish kindof?

I have seen a few of these done around here & it's not a particularly difficult conversion, however, .......... you will have no ported vacuum for the distributor, so in highway cruise mode, you will be effectively running timing that is retarded from the optimal position.
Desirably you will interconnect the four runners with a smallish tube that runs parallel with the crank with a fitting for the PCV valve. The idea is to share the crankcase fumes between all the cylinders & this way you will have some vacuum to make it work.

If possible, hook up a fuel pressure guage to the fuel line for test purposes. When Aidens first engine was built it was found to run lean at full throttle & this was in part because the fuel being sucked in was more than the pump could maintain. When a second fuel delivery line, with a second pump was added, the pressure was maintained & things improved. A little jet drilling fixed the remainder of the problem.

So there you have it
PVC
Fuel pressure
Jet size
No ported vacuum.

cheers guys
steveo, nah, not going to sell em. slam, youll never know if you dont give it a go.
hopefully i can get a heads up on the pitfalls so i can avoid them.