Jonathan, You can do math to calculate whether this engine needs attention or not, but if an engine with this small of an individual cylinder displacement came into my shop, there would be no question in my mind that it would get some attention before leaving. It is possible that it *could* be a valve adjustment, but with all of them off just a little, my best guess would be that the heads need to come off to have the valves and seats ground. If you are thinking about buying this engine, then deduct the cost of a valve job from the value. -Jeff Scott ---------- Original Message ---------- Jonathan wrote:
> I'm new and currently interested at buying a KR-2 and I was wondering 2 > things. The compressions are 58, 71, 73, 75 is this good? These numbers are the result of a differential compression test, with 80 being perfect, 0 being "dead hole". The rule of thumb is if there's more than a 20% difference in compression, something needs to be fixed. 80/58=1.38, so you've got a 38% difference in that one cylinder, so it needs fixing. It may be something as simple as a tight exhaust valve on a VW. To give you a clue of how that stacks up, the worst compression I've seen on my engine in the last 330 hours has been 78/80 on one cylinder. Most of the rest at 80/80. Mark Langford ML at N56ML.com website www.n56ml.com _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html ____________________________________________________________ Kill Your Wrinkles Mom Reveals Shocking $5 method for erasing wrinkles...Doctors hate her http://thirdpartyoffers.juno.com/TGL3141/4d5aceac3ae4e3238fdst05vuc
