Post by: ManX84 on August 20, 2023, 12:06:24 PM
First, I made some mods on my bike, remove the big air box and put my air flow meter verticaly with a big cornet.
I have an unstable rpm a idle and low rpm (just after idle, after it's perfect, working like a fighter plane ;-) could not say precisely because for now my rpm counter is out of order but I say between 1000 and 1500-2000 rpm).
Of course I made butterfly synch, and it is a little better. I will have soon new injector and already check pressure regulator who look to work well (but could not measure pressure because I havent manometer for now)
Before exploring more my problem, is there here some peoples who made this mod ? is is a common problem with vertical air flow meter ?
(because I suspect at low rpm the the flow meter flap could oscillate in vertical position)
(and unfortunately I never run the bike before the air flow modification)
Thanks for your return!
oh please no answer like : put your air box back... this is no way .. :nono2: (it's a special dedication for a Frenchman 44271)
Post by: Laitch on August 20, 2023, 03:32:42 PM
I suspect at low rpm the the flow meter flap could oscillate in vertical position)I suspect that is the problem, but you can always put the air box back. :laughing4-giggles:
Post by: ManX84 on August 20, 2023, 04:39:47 PM
I have already one in France !
:laughing1:
I don't doubt what you say but, this is also an hypothesis for me but just would like a return from guies who made same mod.
Post by: Laitch on August 20, 2023, 08:59:35 PM
Post by: ManX84 on August 27, 2023, 02:12:59 AM
Yesterday I change my injector by new from bosch (recent 4 holes injector, bougth here : www.caferacerwebshop.com, ref on them are 0280158034).
first look to my old injectors :
20230826_122100 (Grand).jpg (39.47 kB . 576x576 - viewed 331 times)I mounted new (after some adventure with ramp and stuck old injector), I made also an idle adjustment, I wend riding..and all my problem goes away!
No more instability at low rpm, velvet and watt !
Conclusion : For those who went remove big air box and put flow meter in vertical position with cornet or other filter, this work perfectly !
Post by: Laitch on August 27, 2023, 08:56:07 AM
Post by: ManX84 on August 27, 2023, 12:48:40 PM
I admit that I did not take the time to do much on the engine..
Brake master cylinder come from china : https://fr.aliexpress.com/item/1005004146097008.html
there are not expensive and good quality. Just one things, levers are a little loose (ok on the axis, but need a plastic washer)
Post by: ming on September 24, 2023, 03:45:13 AM
cheers
ming
Post by: jbt on September 25, 2023, 04:39:07 AM