here is some proof about the older mag. cases http://www.burningart.com/meico/valhalla/mag.html as far as What i have heard--the heads of the 2.1 wasser boxer have a high mag content--hence making them soft. one of the reasons that they pit so easily and eventually leak. i've had more than one mechanic tell me that a head actually becomes porous with age and will be leaking combustion gases through the head into your coolant--all because of the high mag content. this is all hearsay though. i just know for a fact that the air cooled cases had high mag content--haha--i might be one of those bad crowd VW guys--haha. but the burn is quite spectacular |
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