N/A City twin carb setup ?

[K1W1]

Has anyone seen or heard of a twin carb setup for the non turbo ER motor.
I've done up a mini before , would assume the general laws apply to naturally aspirated small fours .
Cupla thou off the head , head port and polished , double valve springs , twin carbs and extractors and a free flo exhaust .
Noticed also that there are even superchargers for mini's so possibility  for us as well .
Anyone the wiser ??

[city_cabriolet]

sounds like lots of $ to me... maybe a bigger n/a engine would do the job cheaper?

[turbomini]

i know of a nice turbo 2 for sale  :P

[Mark_Moddy]

Why not use an Accord EL motor.
Put a crank in from an Accord EG motor.
Rebore to +2mm oversize.
Fit a City Turbo inlet & exhaust system.
Fit a larger turbo, and a front mounted intercooler.

You'll have a 1825cc, fuel injected, turbo motor.
It fits into an City engine bay.

[K1W1]

It actually wasn't all that costly to do up a mini . hardest part was sourcing the right bits .
Was just asking if anyone has seen a twin carby setup for our little treasures , at least then I know that they are available from somewhere . Head port and polish not that expensive and Henry has advised not neccesary to take a coupla thou off .
anyone ???

[Colza]

Mark:
You forgot to mention that the setup you described will need a resonably expensive tunable ecu to run the engine. No-one on this forum has yet successfuly made one work. Even putting a city turbo in an NA city is pretty hard. What you are suggesting really doesnt come under the category of a 'light modification'.

turbomini:
Im with you. Buying a turbo city is going to be much cheaper and faster and its gonna look a faark of a lot better

[turbomini]

if you want to increase ure compression ratio K1Wi and your plannin on a port and polish then u will need to shave the head other wise u will just be decreasing the ratio by removing material from the head chamber.. if you get my drift...(ie when u desroud the valves..)

[city_cabriolet]

ok.

The compresion on a n/a ER is 10.1:1 and unless ur running AVGAS, i don't think u should b playing with that.

n/a ER has a twin-barrel carb where until 3,500 ish only 1 is open, over that both start to play.

What you want is the twin-webber setup so familiar with the Civics. When i had my cabriolet, i was lookin at the Civics and that is a race proven setup... But it's an ER which is a City (Read: Nobody cares!), all this type of work was mainly done with a Civic. There are thousands of Civics per City, ie you can get carby related (jet sizes, upgrade kits) for Civic but nothing for the ER (in my experience, someone please prove me wrong! I want to be wrong!!)

[Tony]

Hey K1W1

Shouldn't be that hard really, I've done the mini stuff and city n/a to turbo conversions as well, really you just need to make up a decent inlet manifold to bolt your carbs on, I'd go with something off a similiar sized engine as a starting point and then jet etc from there.  If you really want to do something cool using the multi-carb approach how about finding a bank of four motorcycle carbs, say like off a Yamaha FJ1200....

Cheers

Tony  ;)

[city_cabriolet]

Now were talkin tony!!!

hmmmm but worldn't you have to remove the CVCC system to get beneits from greater flow and fuel?

I think that's why the Civics even get away with side mounted whatever.

[Henry]

We are talking N/A city here, no CVCC

[city_cabriolet]

no, the n/a ER has CVCC. 12 valve, Single overhead cam,  CVCC.

[Henry]

Not in the City ProT, which this one is. 8 valve,

[Kam]

Sounds like a mad project.  If your going to use twin carbys I wouldn't go for webbers or similar, there too big (really small valves).  Maybe try the ones on the other Honda's.  How about buying another manifold porting it and making an adaptor for a single 32/36 webber.  I've seen it on a civic with very good results. and it probably will only cost you $100- $150.

If your not happy chuck the old carby/manifold back on!  

[Mark_Moddy]

Try a twin weber manifold from an EG or EL (early version EL) Accord motor (ie 1976-80). The ports match up, but you have to remove/relocate two studs.