Gbs Bike Carbs Please Help

[Guest Takumi]

bike carbs are so simple is makes weber dcoes look disgusting! My carbs passed the emissiosn test, and idles at 500rpm

 

1.8mm is too big.. thats where your fuel is going..

[Guest stuart_]

bike carbs are so simple is makes weber dcoes look disgusting! My carbs passed the emissiosn test, and idles at 500rpm

 

1.8mm is too big.. thats where your fuel is going..

 

 

mine idles great as well at 500rpm, but not sure on emissosn have not sva'ed it yet.

 

stuart

[Guest SEgan]

2 Ltr Pinto, SDRAD 750 Carbs (Mikuni 39mm)

 

My jetting is the same as Steve’s (1.7 with needles at their lowest position). I tried 1.6 but it was too weak at WOT. It used to use a lot of fuel before I put an airbox on, which I put down to the slider opening too much too quickly. The general conscientious from the biker boys seems to be that they need a little negative pressure to run correctly and that seems to be the case with mine.

 

I have had a fair few problems getting them ‘right’, they were still giving loads of grief at Barkston, popping and backfiring wildly, I found that one of the mounts had worked loose introducing extra air to number 4 and one of the HT lead boots was far too close to them and arcing across (right angle dizzy cap fixed that)

 

Now everything is sorted they are much smoother than my DGAS, give better top-end and return at least the same MPG. Loads of people have teething problems I don’t think it’s quite the plug and play described by some, but persevere IMHO the results are worth it.

 

Good luck!

 

Sean

[Guest ticeysoft]

Hi guys i have order the fuel regulator as i need to sort out the petrol drinking issue, and thats a def at the mo with the price of fuel.. lol thanks again for your help...

[Guest ticeysoft]

fuel reg did sort if for a while but im bored of the engine and carbs now...

 

im going to change the engine

[Guest JACHRAM]

Had the same problem with flooding , ebay item 230291404429 is a fuel regulator for £23.50 with carriage, i'm going to fit one of these with the pinto pump.

 

Hello.

 

Trying to reduce fule pressure for my newly installed bike carbs.

Running on a standard 2ltr pinto and the original feul pump. Have just received a feul reg off ebay, but it odesnt really go down to 1 or 2psi, or it doesnt seem to anyway. However it didi also have a feul return.

 

This one you recommend on ebay (the number doent work anymore) what type is it and do you know if it has a fuel return.

 

Many thanks

 

Chris

[DAVE CASTLE]

Bike carbs need bike pump simple and cheaper

Dave

[Guest graham dockerill]

Chris, it has'nt got a fuel return and as it was 7 months ago i'm not surprised you can't find it. I still hav'nt fitted it but if you goggle pro flow sytec you will find them Graham