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Which wideband sensors are you using? where do you install the bungs?

On my continuous journey of tuning intake and exhaust for the 700cc project (https://www.xs650.com/threads/700cc-kit-with-a-shell-1-cam-in-a-78xs650e.65405/#post-819839) I have stumbled on what this motor may be capable of by removing the 26” commando mufflers that I bought for the project. Here...

What is everyone using to get the best reading of the plugs. I find that the new magnifier feature on iPhone ( I have a 15 pro) works pretty well. With the built in flash, the light can get right in there

I wanted to understand the differences in flow for various intake options. So I have setup a simple experiment to compare the stock XS650E airbox to UNI pods and a few other configurations. The “flow bench” is made using an old anemometer and a “wind tunnel” out of PVC pipes that closely matched...

Is anyone using Sachse iginition? Seems like a very suitable option for modified motors as it allows for a variety of advance curves. My higher compression 700cc project (https://www.xs650.com/threads/700cc-kit-with-a-shell-1-cam-in-a-78xs650e.65405/) with a Shell cam likes stock advance at...

As I am now looking to further tune the exhaust on my project: https://www.xs650.com/threads/700cc-kit-with-a-shell-1-cam-in-a-78xs650e.65405/ I took dimensions on the stock headers that may be of interest to some. Overall the ID is 1.15” and the length is 29.5”. At the exhaust port there...

If you bought a Race Tech spring kit and are struggling with the stock adjustable fork caps, like I was, here is what you do (per directions from the helpful folks at Race Tech). Load up the gold valves (if you are using them), the springs, washers and spacers (mine were 70mm long) into a fully...

Finally got my 700cc top end rebuilt project to a good intermediate pausing point. Earlier this year, I fitted the 700cc (697cc) JE piston kit and a Shell#1 cam from Hoos. The head underwent a cleanup, 'street porting,' and had Kibblewhite valve springs installed by Roger at R&D Motorcycle...

Is there a good reference plot of valve lift vs rotation angle? I am primarity interested in comparing a 78 650E stock cam to Shell #1. Below is a diagram i came up with from some numbers posted on this forum, but missing lift. thanks

Does anyone have pictures and experience with how stainless headers paired with chrome mufflers look over time? I anticipate a mismatch with stainless yellowing.