zrx1100's latest activity

One part that is unobtainable for this year bike is carburetor boots with vacuum barbs. If those are damaged somehow you will need to...

The bike is in amazing shape

Here is an interesting observation with respect to the stock filter and the K&N stock retrofit. The K&N unit is about 8mm shorter. This...

Kevin, the only calibration I did was my very scientific check of the anemometer accuracy by hanging it out of the car window at a set...

thanks for the comment. I have a number of studies coming as I am still tuning the build from last year...

A beautiful bike. Congratulations! I have the exact same one. It’s a 78E. The only thing you may want to change are the exhausts. See...

Ran a test of different intake configurations. See the results here...

I wanted to understand the differences in flow for various intake options. So I have setup a simple experiment to compare the stock...

What about the seal only. Not the whole rebuild kit?

where do you guys buy the 4-hole repalcement seals for non-vacuum petcocks...

Working on testing TPO inserts for 1.75” pipes. Will publish a report

Fitted pods per guidance from 5T

You can even avoid breaking the cam chain by sliding off cam shaft bearings for a minimally invasive fix. That said, why not replace...

Yes. Jim has a nice write up on how to put it all together

I would not run it. Just imagine larger pieces getting into the chain at the crank sprocket. I do confirm this noise as a sign that...

Here on the right are the bits that I found at the sump filter. When I opened up the motor, the lining was completely detached from the...

Ok. That explains how the pieces got to the small filter.

one question is why you are finding these pieces in the small filter. usually the sump filter should catch these. Is the mesh on the...

an opportunity to open up the top end and bump up the performance. that is what I ended up doing when I found plastic peices of the...

$10 its the cam chain guide deteriorating

To continue on the topic, I tried out the Wolo low tone disc horn (https://wolo-mfg.com/model-300-2t-disc-horn-low-tone.html) and find...

Yes, as I mentioned, the actual increase in pressure is 2.5x. The way we perceive if it is logarithmic and it is noticeably louder but...

I have been looking for a louder horn that would not require a relay. Then I saw this post with a favorable mention of Hella #...

I was playing with the ignition advance on my modified motor: https://www.xs650.com/threads/sachse-ignition.65694/#post-828582 While...

here are the Sache ignition curves that come with the XS650 kit:

Here is the prompt response from the company: wrote: Sorry, we don't have dyno run data for the XS650. We have ran several models...

Sent Sachse an email with a few questions about which curve is suited for what motor configuration and which one is recommended for a...

back in college, I rode an XS400. in the middle of texas summer I tried regular. The engine would continue running after shut off...

In the meantime, I retarded the ignition a few degrees. As many in this forum, I have set the idle to the right edge of the idle range...

here is also a link to the description of the system: https://www.elektronik-sachse.de/manuals/Z10-XS-3.23-en.pdf

Is anyone using Sachse iginition? Seems like a very suitable option for modified motors as it allows for a variety of advance curves...