Wonderful creativity.Fuel injection using a microsquirt ECU, half a set of gsxr600 throttle bodies, and various sensors and custom parts to make it all fit and work.
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... Running 11* timing at idle and all in is 35* which could probably be bumped to 40* to match stock.
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Drip Dry
What good's a post without a pic and title, eh?
Just got back from a quick trip into town to top up the gas for tomorrow and the rain cloud I thought I could out run actually snuck around and came in from the west. Only 2 or 3 minutes in the rain, but that's enough.
A little damp rub down and a squirt of chain lube and all set for the morning.
What is significant about this tale, however, is the gas mileage I got on the Sarnia ride leading MaxPete the wrong way home!
My 76 has 78 carbs on it and it took 7.815 litres to cover 111.6 miles. I converted that to US gallons and my arithmetic works it out to 64.88 miles per gallon. Now the original fill was on the centre stand and the last was on the side stand, but even so, that is surprising economy.
semi synth 10-40 motorcycle oil,
Sorry to tell you this but lighter oil doesn’t save any grams there .,..Yes, I am just a little obsessed with making the XS lighter whenever possible....
Well, I actually chucked the oil filter cover and machined off the "cooling fins" , which always looked a bit out of place to me, as shown in the first pic.. Should amount to around 90 grams/ 3oz as wellSorry to tell you this but lighter oil doesn’t save any grams there .,
And while the engine was drained, I pulled the primary cover, removed the tacho drive gear, and replaced it with an alloy blanking plug, also from Heiden.(Yes, I removed that tiny thrust washer at the bottom of the gear )
And of course I put the parts on the digital kitchen scale, lost a whopping 94 grams/ 3.5 oz. I guess replacing the other tacho gear with an alloy spacer would save a few more grams
Well, I did not just remove the oem tach. I basically replaced the entire instrument cluster with a pair of Daytona Velona analog electronic gauges, so the speedo drive and cables are gone too. I guess that saved around 1 kg altogether. And I do not really worry too much about the oil pump suddenly stopping, that must be a really rare occurence. If anything, an oil pressure gauge, or warning light would be much better for monitoring any lubrication issues anyway. And is something I may look into at some point. I do understand that the XS has really low oil pressure.I think having a Tach to help diagnose an oil pump failure is preferred over a 3.5oz weight saving.............lots of other places to save on weight..........
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