After changing the S1 carb to an old typed carb, my S1 had a small lag every now and then and also the accelerator cable getting stuck when the butterfly shaft got heated. We had got a butterfly shaft done newly at lathe when we got the carb from scrap market as it was badly worn out. Good news was it was run only on petrol. The accelerator cable used to get stuck only when I pushed the pedal 50% or above for prolonged period of time or when it goes beyond 50% many times in continous driving. Sunday, I had got the entire carb out and had the butterfly shaft rubbed in sand paper. We also had to do some small or innovation get the shaft operate in a very smooth way. With the default nut (on the shaft) in place where the accelerator cable is fixed, the shaft would jam a bit when tightened. We knew keeping it loose is not a solution. We kept that nut loose enough and then put another nut to tighten the first nut in the required position. It was operating super smooth after this. Got the carb and plugs also thoroughly cleaned and washed in petrol. I noticed that the old solex carb that I replaced a couple of months ago was running on 97.5 jet and was giving a wonderful mileage. All the issues are now solved. I put a 102 sized jet now. we also checked the tappets and found it to be fine. All these were done with my regular mechanic Murthy near my house. I couldnt go to Kannan as I really couldnt manage the necessary time.
I was very curious to know the mileage on my car after all this. Sujith came late evening and we started with a liter of petrol in a can. It gave an astonishing mileage of 14kms. We drove 2kms in heavy traffic, 2kms in typical traffic, 4-5 kms in moderate traffic and rest we might have averagely cruised. I expect it to give 18-20kmpl on the highways. A not well tuned carb itself had returned me 18kmpl when we tested during our Mysore trip(Me, Arun, Suji, S1 and Suji's CAP)
I also ensured that most of the things stated in the Technical information thread by Behram sir is complied on my car. Only the clutch adjustment and change over to metal core wires is pending. It will be done up shortly. I just want my S1 to be in the finest form.
Thanks Sujith, for making it all the way till my place just for doing this. Especially since u came that far in my RX that alomost gives 30% more mileage than my S1.
I am really feeling more excited to drive my S1 now. It truely now feels like a AVL engine
Last edited by funkykar : 10th February 2010 at 22:37.
Reason: Corrected some typos and added a bit more information
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