engine building

I have been looking every where for a Complete oil seal kit for my 73' tx650 and I am in need of some help. I found this on ebay https://www.ebay.com/i/363178151307?ul_noapp=true let me know what you guys think, or would recommend.

Getting ready to hone my cylinders. Just wondering if anyone has made , seen, or used a torque plate for their cylinders?

so far from my own research i have found some engines specs and 2 different posted compression ratios for the 1981 xs650. i would like to know all of the technical specs if possible. i have searched this forum and others and have come up inconclusive for data. These are what i have found: 75mm...

Looking for someone to build a rephased engine for me have engine someone I can ship engine to have work done

I've soon to be in the market for a 750cc big cylinder kit from MikesXS - I think. Mikes has been out of stock for awhile, and Heiden Tuning as well. I don't know, but I assume that Mikes and Heiden use the same source? When I compared a few months ago, at least the pics were the same. I...

Doing some mix and match engine parts swapping. I've a 447 that was supposedly rebuilt but never ran for any length of time, and when it was started it was making some funny noises according to the PO. I'm swapping the jugs out and noticed that the pistons are stamped with a 50 in the top...

will shortly be starting a ground up engine build.new transmission with 5gear upgrade,rephase,mikes 750 kit etc for which already have the parts.was wondering if any of the engine builders (punkskalar etc) have a comprehensive check list they use(eg. gaskets,engine seals etc etc) to make sure...