StefanL

Hi.

I have been searching for info on carburators, but haven´t found the info I am looking for...

Does a carb for a G230 fir a G2D? I know the intake is larger, 12,7mm instead of 11, but does the holes match?

My engine might need a new carb and I figured it would be better to fit a larger one (and the G230 carbs are more common). I saw a listing on the `bay for a race carb for a G2D that was 12,7mm, and according to the description it would also fit a G230...

But I thought it best to ask you guys as well.

The thing is, I am having a great deal of trouble getting my G2D to run properly.

I posted before about it and thought I had the problem sorted, there was a small hole in the fule line.

But the problem persists. And it is not an easy engine tuning problem, I´ve tried everything from lean to rich settings, rerouted the (new) fuel lines to avoid heating them, shortened them a bit, checked the fuel filter etc.

I just can´t get the engine to get enough fuel. It starts and idles well, but when throttled something strange happens. It revs full and the car sets off, but after a couple of seconds the engine dies, I mean the car literally stops, but the engine keeps running. After a second or two the engine sets off again, and it repeats itself.

I figured hey maybe a richer setting will be better? No, because then the car doesn´t rev at all and just cruises around on low revs, sounding awfully rich. I am not getting big smoke, even though I have proper oil mixture. The engine doesn´t smoke much at all, actually.

I also considered radio interference (I have an AM Kyosho radio) from the spark plug at higher revs, but when held up the car throttles well and I can see no evidence of interference when looking at the servo.

I took the carb half apart two days ago and cleaned the screen from a small amount of debris, but that didn´t rectify the problem. The brown fiber gasket with the two small flaps was intact, but one of the flaps was slightly (and I mean sliiiiightly) bent upwards and not lying flat against the surface. I did not completely dissassemble the carb since I had no access to compressed air at the time.

After running a while the engine has increasing difficulty in sucking fuel, it dies easily on idle and is more difficult to start.

What do I need to do? Get a new carb? Overhaul the one I´ve got? Carbs are rather cheap so I can get a completely new one if necessary.

It has gotten to the point where I don´t want to run the car anymore in fear of damaging it by running the engine too lean and getting it too hot. I have expended the option of getting it to run well simply by adjusting the needles...

Maybe that 29cc Sikk engine is not such a bad idea after all... Sheesh. No, but seriously, I´d really like to get my engine running properly.

Any advice?

Stefan

original.mb

if your still having trouble the only engine tuning specialists i'm aware of are www.sbracing.co.uk

they should be able to help you with there vast knowledge of engines and tuning

jimbo1890

I suggest you go for a new carby. I put a new walbro on my ROBIN and she started singing again!!

StefanL

Yep, Jimbo, I think I´ll do that... Thanks by the way for the silicone tip, it worked great protecting my diff.

Still, I wonder if the 230 carb fits the G2D? A bigger carb would be nice...

Stefan

jimbo1890

Stefan, I am pretty sure the bolt patern is the same but I am not certain and you may have a small issue with the fuel pump pulse hole as well which I fixed with a Dremmel

Two people I suggest you PM is FASTRAT PORTING SERVICE who posts here occasionally and seems to know his stuff and also someone from Daves Discount Motors, I can't remember his username, his prices are acceptable.

chowderhead72

My Feedback: (4)

Could you please post a pic of what it looked like and what it needs to look like is sounds like that could be my problem. (see post "BUBBLES")

jimbo1890

Chowder I am not sure exactly what you're asking but if you are asking about the pulse hole there is a small hole that runs from the engine head through the manifold/insulator block to the carby. this hole allows a pulse of air to push on a diaphram inside the carby fuel pump. When I changed carbys the pulse hole was in a different spot so I just engraved a channel in the insulator block to match up with the new carby. If you need pictures I'll have to take the carby back off the ROBIN and take a few so let me know.

hope this helps.

chowderhead72

My Feedback: (4)

So if I understand you correctly a hamfisted individual such as myself could install the isolator plate (spacer between the carb and motor) upside down and have all sorts of lack of fuel issues? Let me look into that before you start dismantling the red breasted one. LOL

badz

My Feedback: (1)

More advertising SPAM....sickening

Crusty

Try a diapraghm kit first, they are only a few dollars, and check the internal mesh screen for debris

jimbo1890

Yes upside down or back to front will give problems even a gasket wrong will foul things up.

hope I've helped.

StefanL

Thanks for the tip Crusty, but I have already cleaned the screen from debris, and it had no effect.

I have tried to locate someone in the EU that sells carb rebuild kits, but I have been unsuccessful. Maybe I´m just daft or something, but I haven´t found any. Does anyone know of a retailer that stocks rebuild kits in Europe?¨

Stefan

StefanL

I´ve just bought a new unused 230/260 carb and FG´s performance air filter off the german ´bay. Should have it by the end of the week, can´t wait to try it on the car.

Maybe it´ll work!? I SURE HOPE SO!

If not, I´ll have a spare carb.... [>:]

Stefan

Mad Wax

I had my 22cc Zenoah old engine looked at it needs replacement..
Head
Piston ring
Drive bearings
Carb

Unworthwhile to repair []
(brother was going to get it sorted and use it in a RC plane)

StefanL

That´s too bad, Mad Wax.

I don´t like either to have to throw away old stuff, but luckily new or lighthly used engines are pretty cheap. I think I´ll get a fresh 260 later on and keep the G2D as a spare.

ryan@ddm

The Walbro WT-603 (stock carburetor for the 230/260 - 15.88mm bore, 12.7mm venturi) works well on the G2D with the proper intake manifold. Did the auction you won include a manifold? You'll want to be sure to use one that looks like this:

http://www.davesmotors.com/store/product282.html

to ensure proper pulse hole matching.

StefanL

No, it did not include the manifold. It doesn´t matter though, I´ll modify the original one to fit the new carb.

I have the tools for it, should be an easy job. To buy a new one would be too expensive, with shipping etc. There are no good shops in my country, so I have to order everything from abroad. Works fine, as long as the items aren´t too cheap, then the shipping becomes to expensive compared to the value of the item...

Stefan

Oneill Brothers Racing

All it takes is a little grinding with a dremel tool. You can put the new gasket on the old manifold and make a mark then just grind the hole over to the new spot. You do not have to drill the hole all the way through the manifold. You only have to go down about an 1/8 of an inch.

StefanL

Bumped this thread just to say that my engine problems are resolved!

The new 260 carb is amazing! As they say...just what the doctor ordered. It felt like the engine tuned itself, it was so easy. I added an FG performance air filter as well, the original one was just too crappy.

One interesting thing was that I didn´t have to reshape the manifold, the pulse holes fit straight over each other. The carb went on real easy.

Now the car has a whole different grunt, and I am real pleased. The carb wasn´t expensive either!

Stefan

ryan@ddm

Glad to hear it worked out.