www.RX7fb.com

has anyone ever got hold of one of those twin SU setups? I remember them being advertised in the 80's and I've seen them on first gens in photos but never seen any in real life.

Yeah Ian that is part of the reason I started the thread.
I have found a set up and it is on the way.
Something different.
A bit retro.

MelloYello wrote:I have found a set up and it is on the way.

The set up is for ported 12A engine? Throttle response should be better cause of the smaller Venturi.
Syncronize the two carb is the difficult part of this set up.

spirit r wrote:The set up is for ported 12A engine? Throttle response should be better cause of the smaller Venturi.
Syncronize the two carb is the difficult part of this set up.

It was originally sold as a bolt on upgrade for 12a and 13b.

MelloYello wrote:

spirit r wrote:The set up is for ported 12A engine? Throttle response should be better cause of the smaller Venturi.
Syncronize the two carb is the difficult part of this set up.

It was originally sold as a bolt on upgrade for 12a and 13b.

So you will get two inlet manifold one for 12A and one for 13B and a set for different jetting? cool!

What do you make with your new rebuilt Weber you present here http://www.rx7fb.com/viewtopic.php?f=4& ... &start=130 doesn 't it work good James?

Although they aren't the kind of thing I'd put on my car. They are quite interesting aye! Thanks for posting up

IDA best application for all rotaries? I think the Nikki is more of an all rounder than an IDA will ever be. IDA wins hands down in competition applications though.

I can't see how weight is a factor in carb performance measurement but feel free to explain how it could be though because I don't claim to know everything.

What, in your expert opinion, is the best Weber application for a street rotary? 48 IDA or 45 / 48 DCOE?[/quote][/quote]

Nikki's best arounder and can be modify to suit 230hp Bridgeport.
It needing more testing to make it work well,like changing jets which is triedsome.
Bit heavy than IDA cos the nikki got cast iron as base.

Easy work on jetting/choke/lighter is IDA, <<<

Weight, it's important to racer's point of view cos it's matter between winning and losing on weight
Rotary engineering carb's very heavy( son's imp got one and shocked to find it so heavy), same place line up to UK driver's side is heavy.
It means the driver's side is more heavier than passage side.
Handling will be poorer,it's not end there but to have a coilover may aid the transfer to up the weight over another side..
Left hand drive have no problem with it cos the carb is on the opposite side. think cross weight transfer.

IDA again<<<

Same on holley, good on bridgeport but canna cope on corners and good for drag boys.
Same as rotary eng's carb, very heavy.

IDA again<<<

IDA got strong history on racing anything with rotaries 10A,12A, 13B.
it's all proved in any racing books.

I'm no interested on road going plus I have no experience of car comfort.
just me bring difficult and I do roll my eyes backward to see my brain when someone made a cupholder for the car or add heavy object onto the car. it make me shout at to the referee, "that's heavy!! are you blind ref!"
IDA can be troublesome like any carb's problem, up the steep hill was the worst that I cannot control it, rich in the back rotor and lean in front. changing fuel/air jet to balance it out but when to drive on flat road. it goes opposite ways... nothing prefect that ways.
looking back on carb, it has it days when there's many modern fuel system can be done on rotaries in the best way of everything from flat road to mountain without losing the driveability, flatspot and better fuel effeicity.
Hope you lots understand it.

Thank you for your carbs explain out of the view angle of a hill racer.Interesting point to compare weight distribution on Rhd and Lhd cars.
Can you Start a new Forum article and upload pictures from your lightweight hillracer please?
I for myself having a lot of respect people driving between trees on small winding streets with 150km/h and more.Http://www.youtube.com/watch?v=FvBKMxx6cX0

spirit r wrote:

apexheid wrote:Sure, I'm difficult person....

I'm difficult Person too......
In Germany we say: if you say "A" you have to say "B"
Wer A sagt muß auch B sagen, stimmt's Pete?

Verzeihung für die späte Antwort,
Ich hatte einen Urlaub
Das ist Stimmt Thomas

Sorry for late reply, that is correct

DKWW2000 wrote: Verzeihung für die späte Antwort,
Ich hatte einen Urlaub
Das ist Stimmt Thomas Sorry for la te reply, that is correct

No problem Pete.I hope no fish throws the hook in your holiday

@ James https://m.youtube.com/watch?v=ECMYPE82gbo
seems good choise
http://www.di-michele.de/html/36_dcd.html