Akinari\'s EFI to Carb project

hi guys!

i finally decided to turn my cg10 efi to carby.

took out a dual carb from a honda and gonna implant it to my cute cg10.

anyways ill be updating you guys with pics of the progress.

oops! typo on the thread title.. was supposed to be Akinari's EFI to Carb Project

hmmmmm (wondering if it fits or not)

Hmm i think you "need" some bikes carbs [suz/kawa/honda ..OR real DCOE etc

like -->

day 2

took out the useless stuff and starting with the flange.

well i was also thinking of using bike carbs but one of my friends gave me the honda carby so went on with it.. heheeh

still working on the manifold.. will post pics of update soon.

you dont find " bolt on " jets to e'm needs soldering , drilling etc , and you find anything usefull jets to it whitout lambda .. and uses a LOT of fuel .. worth testing still .. ( whit out mot )

Why would you want to go back to carbs?

more flow in theory? but looking at that i dunno about that setup. quad throttle.. yeh. but errr.. hmmm. will prob sound hectic if you get it running with that on there thou.

@ micra king

well first of all sir its because k11s are import cars here in our place and its pretty hard to get spare parts.

second my throttleboddy was acting up since my maf sensors are down for the count..

third need more flow

and finaly, efi tuners are a very rare breed here since the technology to tune ECUs are for people with VERY deep pockets xD

update..

carb mounted..

still need to attach hoses and stuff..

got the engine to start..

needs rejetting and more tunning..

nice work!

Well done you getting it up and running fast. Looks like the carbs could do with a full rebuild and clean to make sure your getting the best performance.

hey, is your car left hand drive? can't see the brake booster in any of the pics...

nice one aki ;-), i think most variable venturi carbs like those use the profile of the needle rather than jetsize for the metering/air fuel ratio (akin to the old SU carbs, which used 1 jet size and hundreds of different needle shapes) and the acceleration enrichment is controlled by the rate at which the dashpot is allowed to lift eh

frank

@turbo
yes sir my k11 was already converted to left hand drive when i bought it.

@frank
i will keep that in mind sir and will check the needle settings too.
thnx for the tip.

@micra king
yes i will be doing that sir.. im still under testing stage right now but i will do a full rebuild and cleaning when everything is set.. even planning to buff them up to make em shine

that sounds fun , when you get it run ok , any positive improve on performance ? will really sound at least different .. and eat fuel more ..

Akinari WROTE:

"got the engine to start..<BR><BR>needs rejetting and more tunning..<BR><BR><A title= href="" target=_blank></A>

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Hi Aki, what did you do with the ignition system? ecu wise. and i am guessing that you have a low pressure fuel pump now.

@SFJ
im not really concerned on fuel economy since im after the performance improvements.. and yes sound of the exhaust is different compared when it was still efi

@sportsclassic
im using stock ignition system sir.. will be changing to coil packs soon with msd when i save up some more cash xD.. and yes i changed the fuel pump since the stock one had too much psi

update:

omg i was shocked the engine was running lean with the stock jettings. i was expecting would would be flooded.. changed jets to 200 each and will be testing if its ok.. will update as soon as i get results..

Akinari WROTE:

"update:<BR><BR>omg i was shocked the engine was running lean with the stock jettings. i was expecting would would be flooded.. changed jets to 200 each and will be testing if its ok.. will update as soon as i get results..

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hows the performance?

update:

right now im forced to chage to headers since the intake did a lot of improvements but the current exhaust is stock.. the engine is choking when i get the rev upto 4k due to over restrictive exhaust manifold..its like when you need to sneeze but there are a lot of booger on your nose that's clogging up the air flow

will post pics soon..

update:

engine still running lean under 200 size jets. will turn it up a notch.. will update as soon as i get results..

update:

lol found the problem.. the timing was too far advanced and had to turn it down a bit.. now running under 155 jets and working fine.. better throttle response compared to the EFI.

whats it sound like with the carb's?

@turbo

the "nismo" cams(winks..lol) you sent me are making the sound of the engine monstrous and a bit wild.. ill try get video with audio soon and upload it here..

lol.. that would be mad

update:

as promised pics of the headers..

update:

as promised vid of the engine sound..

holly ****. you don't **** around hey... we need video of you giving it some curry!

@turbo
will do sir.. got the heads ported and shaved a bit this morning so gonna get more vids as soon as we put the engine back together..

hahahah anyway since engine not up yet.. i do have a pic of my bud feeding the car..

**** me it has a wrx sound to it in that video.

maybe it sounds like that cause my mufler is directly below the driver seat. no more pipe extension to the rear.. its just headers, a couple of feet of pipe, then muffler.

LOL at the Coke! Damn I keep forgetting to check out your video. I really want to hear this carbie beast go. Good luck with it all, hopefully you get some nice good reliable power out of it.

hi Aki, what did you do with the air flow meter, did you just disconect it?

@LonePhantom
thanks..i did get lots of power and instant throttle response compared to the efi.

@sportsclassic
well all sensors connected to the throttle body were removed since they are of no use anymore.. the only things connected to the ecu is the dizzy.. but will change it soon when we find some replacement dizzy that doesn't need the ecu to run it.. and maybe put an MSD so that i could play some more with the fueling..

aki

your ecu might need the t/p/s signal to give you the right ignition curve eh

frank

@frank
well ignition was running ok..havent been having trouble since the implant..

update:

been having trouble since got the heads ported and shaved.. major improvements on the 3000 upto 7200 rpm.. BUT.. engine stalling if running the car below 3000 rpm.. hesitating and sounds like coughing.. but when i rev up the engine upto 3000 rpm and above, engine goes wild even outran my buds 1.2L honda hatchback last night with my rpms all out to 7200.. sad thing is undrivable in traffic bcoz engine dies if running it under 3000 rpm..

aki

mine ran ok with a ported and 2mm skimmed head, are you sure the valve timing is,nt 1 tooth out, maybe ?

frank

Well checked out that video, car sounds great. Hope you get the low RPM tuning sorted out so the car is drivable.

@frank
thanks for the tip sir.. will be checking on that as soon is i get home.. currently out of town and be back maybe by monday.. will also be checking the idle jets too maybe they are the ones causing the problems..

oh by the way, just to confirm, the timing chain count for cg10 is 9,7,11 right?

thanks in advance

aki

Isn't it 5 at top, 7 front, 11/13 (cant remember) at rear?

Mickeybbb WROTE:

"Isn't it 5 at top, 7 front, 11/13 (cant remember) at rear?<BR>

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yeh true that's right.. but aki's got a cg10... maybe different?

@frank
is that for a cg10de sir? thank you!
but the counts kinda different.. strange, maybe japan cg10 different?

im dying to get back home to check it out.. 2 days of sleepless nights till i get home.. lols

Akinari WROTE:

"@frank<BR>
is that for a cg10de sir? thank you!<BR>
but the counts kinda different.. strange, maybe japan cg10 different?<BR>
<BR>
im dying to get back home to check it out.. 2 days of sleepless nights till i get home.. lols

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yeh aki, they,re all the same

frank