S3 Pipe And Kehin Carb 125

[jsygasgas]

Is it worth getting the two parts got money for bday bike goes great any way do they make much of a difference

Also if i do get the pair will my bike be to powerful for me ( 6 ft tall 11 stone) b+ rider where is the best place to buy from ?

Thanks in advance ben

Edited July 4, 2008 by jsygasgas

[gasgas4life]

Yeh its worth it!! it takes a bit getting used to because of the difference in power if jetted properly. And the slide spring is alot lighter than a dellorto standard. I have both and im glad i brought them, the titanium front pipe sounds mint with the tick over right.

[nigel dabster]

The s3 pipe needs to be the short one.

The advantage of the kehin is in performance also but needs to be set up by someone who knows what they are doing.

I always grind my dellorto spring which gives an easier pull, roll it around both ways on a grinding wheel a few times hey presto! learnt the trick from bing carbs way back when........

[gasgas4life]

nigel dabster is right

oh cool! nice one

Edited July 6, 2008 by gasgas4life

[jsygasgas]

Yeh its worth it!! it takes a bit getting used to because of the difference in power if jetted properly. And the slide spring is alot lighter than a dellorto standard. I have both and im glad i brought them, the titanium front pipe sounds mint with the tick over right.

Where did you get them fro :s and can you remember what price it was

Thanks in advace ben

[gasgas4life]

umm the carb was

[telecat]

Factory Kev recommends "boring out" rubber block on the reed block to accept the Carb. You can also get a carb from Kelcoat with a metal "sleeve" fitted that goes straight into the block. Works a treat and stops the carb rubbing the top of the gearbox casing.

[jse]

Factory Kev recommends "boring out" rubber block on the reed block to accept the Carb. You can also get a carb from Kelcoat with a metal "sleeve" fitted that goes straight into the block. Works a treat and stops the carb rubbing the top of the gearbox casing.

A small wedge shaped reedblock spacer is also available from GasGas but I don't have the part number right at hand. Fit between the reedblock and manifold with the thick part at the bottom, it tilts the manifold slightly upwards enough to raise the carb angle to prevent fuel frothing in the bowl due to engine vibration.

Jon

[gasgas4life]

This reedblock spacer you are talking about: do you think the engine vibration and frothing could cause petrol to come out the overflow? And if so would this spacer help? Thanks in advance

[jse]

This reedblock spacer you are talking about: do you think the engine vibration and frothing could cause petrol to come out the overflow? And if so would this spacer help? Thanks in advance

It's a possibility, if vibration was the base cause to begin with. Modern carbs with Viton tipped float needles are a little less prone to overflow due to vibration. If the carb float bowl rests on the engine case (or the carb body contacts metal around it) engine/frame harmonics can cause vibration and frothing in the bowl, resulting in aeration. Keihins have a slightly lower hanging bowl than the Dellorto, so it's something that needs watching.

Some of the earlier TXT models (97 JTX320, I think, for example) used an extra reedblock spacer (maybe 4 mm thick?) and this wedge spacer looks exactly like one of those that was set on a belt sander and what would have been the "top" part had pressure put on it so that part ended up about 2mm thick. An extra spacer gasket and slightly longer screws were used to mount the wedge in between the reedblock and manifold. The wedge would tilt the carb up a few more degrees and raise the carb body up a couple of mm's due to the added length of the manifold reedblock assembly.

Jon