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On 14 Apr 2004 at 18:15, brian b wrote: > I am having a rebuilt 1600 longbloack installed in my 68 sqaureback, > the company provides a warranty if you have the 300 and 1000 valve job, > oil change etc done at the shop. I have heard you want to keep the MPH > below 50 for the first 500 miles. Just wanted to know if anyone has > advice on the best and of course, the proper way to break in a new > rebuilt. Any advice would be great, since I want to enjoy this new > engine and the car for many years to come. Keep the RPMs varied. In other words don't take it out and drive it for 300 miles at 65 mph and then for the next 700 miles at some constant speed. Longer drives are best, so that it gets fully warmed up, but vary your speed and use different gears. It's also a good idea to run thru the full RPM range that you expect to use eventually. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org