flat spot / hesitation between 3rd and 4th

[bennyboy]

on WOT ive got a flat spot when i change gear between 3rd and 4th. it only does it when your really giving it beans, Im doing a 1/4mile on the 1st of april and could do with it sorted before then, any suggestions? thanks ben.

[Markey Mark (BD)]

Whats your carb spec mate?

[bennyboy]

cant remember off the top of my head, had it off about a month ago for a clean and changed the jets because i put a T25 on and my AFR gauge is giving all the right readings throughout the rev range. do you think its carb related?

[Markey Mark (BD)]

I've had issues with the larger needle vavles before if you have one of them fitted, if not then check the setting for your accelerator pump jet

[bennyboy]

cheers i'll have a play at the weekend!

[Brigsy]

I used to get bogging between gearchanges with 2mm & bigger needle valves, if u have a rev limiter just flat shift.

[Tony Walker]

since ive rebuilt my engine ive been getting it at 15 psi only mods to carb is a 1.2 2nd stage.