youngfc

iTrader: (1)

I cant do this now but what would u guys think if I got a 6 port and did...
. a mild street port mostly clean up the runners on the primaries
. more of an aggresive street port to the secondaries
. and a big 1/2 brigde
. then a big enough exuast port
. then I got the first carb its a cv atv carb mikuni 30mm for the primaries
. and 2 mikuni hsr 45 (maybe a 42) mm flat slide carb (45 flows 237cfm@12inchs of water, and the 42 flows 213) for the sec and 6th ports.
.kinda a short motorcycle like intake
l l l l l l l l
l l ( v ) l l type deal. you can kinda see what im talkin about right?
linkage wouldnt be hard to make for the throtle cables, and fueling them would be as easy as a 3 way spilt at the end of the line. what kinda power do you guys think some thing like this and a proper header (tuned length) then a stock gsle igtion system would make?
it would be a fun car so i dont really mind a loud beast not a dd by any means.

aerosev

I had a play with a mikuni carb on my 110cc peripheral port motorbike before I fuel injected it, It wasn't to hard to get it running the carb was off a 100cc 2 stroke, the idle mixture was pretty well right and didn't need adjusting, the top end was really lean and I had to drill the jet out alot! the mid range I couldn't get right by adjusting the needle but could probably be fixed by changing to a different needle but I gave up on the carb idea at that point as I decided to turbo charge it. If you were going to do it I would suggest getting a wideband O2 sensor to tune it, takes the guess work out of it, but expect to change idle jets, needles and main jets to get it right.
Also keep in mind you will have no acceleration enrichment,
If I were you and you wanted to keep it on the cheap, keep your factory intake, injectors and sensors etc and build a megasquirt ecu.
Then you will have the ability to fine tune it to a greater degree and also adjust all your ignition maps, It should make alot more power.

youngfc

iTrader: (1)

I thought of that, but it seems like I could get more power out of this cheaper I already have the 30mm cv carb ,and was diggin im my parts closet (yes i keep bike parts in my closet im really that much of a biker to the heart) ,and I found one 45 hsr so that means im one carb short. the mani would cost me the cost of the flange and tubing (best buds dad is one hell of a welder thats willing to do it for free yes free) so at least too me it seems cheaper. I mean whats a mega set up run? like 500 give or take (i dont mind doing the work and I am a certified electrician).those carbs can be tricky to tune. (raced bikes for a long enough time to have picked up some tricks with them, wich is really funny cuase I cant tune car carbs worth a damn but I can work mearicals with those cv's and flat slides.) and whats the specs if you dont mind me askin on that 110cc bike? maybe some pics?
thanks for the advise

youngfc

iTrader: (1)

I just remembered that there is an adjustable accelerator pump on the hsr carbs. all sizes just a side note for everyone.

aerosev

Here's a picture of the bike when it was carburated. The carb was about 18mm and had about a 120 size jet from memory, the carb was too small for the engine.
Go to http://www.aaroncake.net/rx-7/megasquirt/PartsList.asp for more info on the megasquirt, I would recommend going that way if I were you, I can't see four separate carbs being the easier cheaper option especially when your probably going to be restricted to running a dizzy over a computerized ignition system.

youngfc

iTrader: (1)

thanks but I think gona go carb because I came up with some staged linkage that I have to try and I wanna do this in a 1st gen so a dizzy is kinda the only route for now. I got 2out of 3 carbs and just got a good deal on the last one wich would put me too close to not do it and that accelerator pump has really got me too. I saw the youtube vids on that bike beautiful man thats all I can say. I love the exaust note.