13b N/a ?....

[Dominic]

I have one of the New IDA carbs on my 13B egi motor and it is excellent, I looked ain to secondhand ones from Australia or the States and the fact that they are probably 30 years old makes them a bit of a gamble, unless you can see one first.Even the specialists said the had bought them with siezed jets and other horrors. I got mine 3 years ago from Eurocarb. I have had no problems getting jets or 40mm venturis, however there are no 43mm ones in the uk suppliers at the moment.
 I have no problems with using this on the road and is very dosile, starts and idles well.

Interesting, thanks...

[dubber91]

ask Era what he thinks of \'sideways carbs\'....

\'its gotta be downwards bro...\':guinness

[oldone]

ask Era what he thinks of \'sideways carbs\'....

\'its gotta be downwards bro...\':guinness

In actual fact a carb that does not stand up,is not a carb at all,carbs were meant\\made that way...not lying down !!!!!!!!!!!!!!:yes :guinness

[yoeddynz]

i\'d be up for a group buy from the US too but I wanna wait till i know more about the choke and emulsion tube sizes first so I can order it all in one go and not being mucking about later buying more bits...
who else might be up for a Weber ?
aalex

[travellinbob]

Side draft carbs are underated! The first car powered by a rotaru to dip into the 9\'s in oz( drag racing that is) was turbocharge, a wee bit of nos but had a side draft weber.!!!I am yet to hear a technical argument for the down draft versus sidedraft carb. That is... one htat say down is better than horizontal. Sure it is a very proven formula, just ask or look at era\'s car. Simple and bloody fast. But why is it that peole shy away from a sidedraft. Or for that matter a dual side draft set up? There might be not enough room at the side of an engine but you can mount the 2 carbs on top. I have seen this work,
   cheers, michael.

[oldone]

Side draft carbs are underated! The first car powered by a rotaru to dip into the 9\'s in oz( drag racing that is) was turbocharge, a wee bit of nos but had a side draft weber.!!!I am yet to hear a technical argument for the down draft versus sidedraft carb. That is... one htat say down is better than horizontal. Sure it is a very proven formula, just ask or look at era\'s car. Simple and bloody fast. But why is it that peole shy away from a sidedraft. Or for that matter a dual side draft set up? There might be not enough room at the side of an engine but you can mount the 2 carbs on top. I have seen this work,
   cheers, michael.

Sidedrafts are made for FORDS and OPELS...not ROTARIES........:3gears-rh :guinness

[dubber91]

how about oddly mounted rotary lumps? cos they would technically be sideys

Theres nowt wrong with em....Ive just yet to convince era :WaveBye

air dont flow easier downwards to sideways or anything, so why should there be a performance difference???

in fact, due to the vaporised nature of fuel, atomisation in the air stream should improve with a sidey

[yoeddynz]

The pictures of Side drafts mounted above the top of a  rotary with the manifold doing a full 180 bend to get flow into engine look wrong- i just picture all the fuel getting rammed against the outside of the bend, wetting the walls...
Main thing is I now have this lovely downdraft manifold!!!

One of the things I\'ve always loved about rotarys in NA form is how clean and simple it all looks- and downdraft webbers fit in well with that look.
alex

[Dominic]

If my memory serves me correct, a longer inlet manifold gives increased torque at lower revs but less power at high revs. A shorter manifold gives less torque at low revs but more power at high revs.... i think!
I agree though that a straighter run-in to the inlet ports has got to be good, flow is everything.

Racing beat did a side draught Dellorto set-up, think power figures were sub 200bhp.

Checked out Eurocarb as suggested bu Jon. They do new Weber 48s for £325 each so reckon this would be cheaper than importing from the US

http://www.racecar.co.uk/weber/

[oldone]

The pictures of Side drafts mounted above the top of a  rotary with the manifold doing a full 180 bend to get flow into engine look wrong- i just picture all the fuel getting rammed against the outside of the bend, wetting the walls...
Main thing is I now have this lovely downdraft manifold!!!

One of the things I\'ve always loved about rotarys in NA form is how clean and simple it all looks- and downdraft webbers fit in well with that look.
alex

:Thumbs-up :Thumbs-up :Thumbs-up :Thumbs-up :Thumbs-up :Thumbsup!

[dubber91]

\'If my memory serves me correct, a longer inlet manifold gives increased torque at lower revs but less power at high revs. A shorter manifold gives less torque at low revs but more power at high revs.... i think!\'

read up! tis what i said.....

So is top end power all we care about then? :rollin

if you want the shortest route into the engine, a sidey mounted over the exhaust is the shortest manifold....wouldnt take a lot to do it either :Santa

a sidedraft carb over the rotor is a much neater package, more space efficient...you dont have to hack holes in the bonnet for the velocity stacks and filter either

I found the perfect thing to weld into your bonnet to clearance the carbs era.....whatcha think??? :InLove



take your pick!:Santa

[yoeddynz]

veeeeery nice. you could store other stuff in them too...

I\'m aware of longer manifolds = more torque but how about the important side of asthetics?
I just love the look of IDA\'s....

[oldone]

That is pure sex for the oldone.... ....:evillaugh

[dubber91]

nah needs new ignition leads, coloured pulleys, and gettin rid of the gay rotor oil filler cap

whats wrong with this?

[dubber91]

ok it is messy, but nothing fundamentally wrong with it :Thumbsup!