i wana go on the all carb diet, which one do u recommend? ;)

[turn69up]

i wana go the carby route with my big port 4age so far i have come up with the one im looking for...(i think) LOL.
its off the suzuki GSXR 1100 and the kawasaki ZX-900 and ZX-1100 its called a "keihin FCR 41mm inline 4 horazontal, flat side, downdraft"
1st- is this the one i want?
2nd- are there any others that will work?
3rd- will the 38mm version do as i want the 41mm but think its a bit harder to find?
4th- how much should i pay found a few in the states for like $800
5th ?... is there any thing i should know going this route (i know i will need to tune them regulaurly)
6th im tired of trolling
7th thanks for any info

[anastasios]

I suggest more research, 4age is designed to be an efi engine

[Andy San]

any carbies other than the dcoe webers will be expensive to set up and get working properly as jets and chokes etc are getting hard to get for them.
Especially when you are trying to swap them of two very different motors.

38mm is very small, keep in mind the silvertop throttle bodies are 42mm (or are they 40mm- i forget).

You can get a new set of DCOE webers for a little more, you will be able to buy an off the shelf manifold for them and linkages that will actually work well. Plus you can get them setup by someone who will actually know what they are dealing with.

[anastasios]

carburetor setups:

[blinded]

Twin DCOEs or DHLAs.

Don't expect much change from $2000 - $2500 if you want them to be setup properly.

[worked]

ask joshke he has R1 carbs om his 4ag
best setup i've seen on an NA 4ag

[turn69up]

thanks guys

[JoshKE]

As Ed said, I'm running R1 carbs on my 4AG. One of the biggest issues you will run into is getting a custom manifold made. If you're handy with alloy welding and have loads of time on your hands give it a go, as bike carbs are great things. I'm still in the middle of tuning mine, mucking around with jet sizes and needle size and height. But with being such a modern carb, jets and needles are easy to get a hold of. Even with the rough state of my tune, I can turn the key and have it spring to life like an EFI setup.

Having said that... if you haven't got someone to do the manifold work for you without shaking you down for all the cash you have, I would go for DCOE carbs like Webers.

If you have a bigport 4A this kit gets you most of the way, minus tune, filters, etc.



If you're totally set on carb'ing the 4A you will also have to look into ignition setups for it. A bunch in NZ make a little ignition module (Hyperpak, you can find them on eBay for a decent price usually, $200-300) that runs off the standard distributor giving an advance curve of 15 deg from the static timing. Other than that you have locked timing setups which aren't as good but are cheap and do the job, then there is setups involving custom distributors, fancy modules like MSD/Mallorys/etc, which cost more.

Basically, bike carbs are do-able, if you've got the time/money to spend.

[turn69up]

sweet thanks joshke ive found some off a GSXR 1100 for $300 probs gonna get them

[turn69up]

+ got a mate who is a mad sheet metal apprentice