injection would be easy with injector machined on the back using brass tabs and would face direct to the ports.

To create these units it would need a separator going up to halve way up to keep pulses even similar to stock manifolds but angle and port size should be increased for more volume and top two inlets at about 44 to 50mm tapered so if someone wants to run smaller carbs just cut off lower on the inlet pipes but must have a step on the outside for ease of securing hosing or sliding bigger alloy pipe on top for welding but those things can be also machined later.

These kind of mini manifolds would allow better turbo manifold design or straight out exhaust pipes.

that would be awesome especially if you had option for injector boss's, maybe even a 2 piece intake plenum similar to the cpc ones for turbo and efi setups

not to sure about billet ones as the bend would have to be tight but certianly can do a ally set welded to flange and flowed to suit but i might suss a high pressure casting at a later date for them coz thats a great idea

spot on!

they will suit most R1 or modern bike carbs
eg. Rover with R1 carbs..
http://www.boggbros.co.uk/images/Rover_v8_1_320pix.jpg

will even suit Kadron Brosol VW aftermarket carbs and
even common old school stromberg carbs

but for me its to make a plenum on top for boost.

wat kind of angles we talking 90deg. from flange to top

you can just machine the mini manifolds from billet they will lend themselves to all sorts of setups even crossflow manifold that goes to the other side of the engine bay. Ill pay for the mini manifolds no problems they will come in handy big time.




almost the reverse of these but with smooth flow passages
http://blogs.yahoo.co.jp/hugo3058jp/29185558.html

i might have to look in to the casting idea but i am designing a stainless manifold too

as for the r200 i will get to is but just takes time as its a side job for now lol

I just had beans, might be clearing the office not the air

I was a bit late on the post but dont worry about the r200 you are right with sticking with what came easily the R180.

You could also do an alloy turbo A series manifold out of billet to be use for casting into iron similar to the suzuki gti one, there will be interested parties who prefer them over tube ones that dont flow well. Ill be in for a couple, Im sure theres another dozen that would jump on them too, and doing out of cast you can do smaller runs or batches in sandcasting saving money.
http://www.ebay.com/itm/Turbo-Exhaust ... ts_SM&hash=item1e6d0498fa

you can pair the turbo manifold with something like these which could be used for carbs or add a plenum for turbo
http://blogs.yahoo.co.jp/hugo3058jp/29185558.html

I think these would be better but more angled up to clear turbo manifold and peeps can use 44mm downdraft bike carbs.
http://datsun1200.com/uploads/newbb/8618_504ec078872f1.jpg

vacuum can be made between the 2 sep pieces by brass taps and hosing to avoid billet pieces been too big to start with.

You can do a flange plate to suit these manifolds (ive poorly illustrated in 5 mins) and then any plenum from other cars can be welded up on top of the 2 hole flange with tapered holes to match the mini manifolds.

Attach file:

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  manifolds for A series.JPG (41.75 KB)


  flange for A series.JPG (17.44 KB)

im getting the r180 for $50 complete so im gonna look into them both just gotta look at getting a r200 diff now lol