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You do know about the lefty-loosy, righty-tighty thing, don't ya??
:D
Just kidding.
I'd be inclined to go along with the dissimilar metal idea, in that there may be more holding the two together than just torque. A friend of mine had the same trouble with a motor he was disassembling. At one point, the head broke off the bolt. We just welded it back on and kept trying. Applying some heat eventually helped.
Im no help withthe VX bolts but for your super bug spindle, invest in a VW spindle nut tool..its about $10, sometimes you can find them on ebay. Also works for 4 lug 76-82 porsche 924's(might make it easier to find) .. its heavy (steel?) and it goes over the nut and has a lip you whack with a hammer. 5lb sledge and that tool and itll pop that puppy right off..;Dy;
are you using an extension?an extension absorbs the impact . the fact that it was not an impact socket could also be a problem. shawn
Like he said above, give it some heat. Galvanic action could indeed be involved, in addition to whatever corrosion might come from exposure of the bolt body to coolant. Another option is if you have a long heavy centerpunch to hold on the bolt head and smack with a 2-1/2 lb. or heavier mallet, possibly setting up a vibration to loosen the bolt. I know the Japaneese used to be notorious for using impact drivers for assembling their cycles.
...Old school leverage trick. You have a 2 foot breaker, add more leverage by using a piece of iron pipe over the handle of the breaker bar. Should help :yes:
I had a friend of mine over this evening... checking out the progress... well, he helped hold the motor while I put about three feet of break-over bar to the headbolts... DAMN! Got them busted loose... actually BROKE two of the headbolts... must be that corrosion inside the motor... all I can guess. Got that head off... had to come in and start getting cleaned up for bed... I'll pop the other off tomorrow... now that I KNOW I need a helping hand I'll be fine. TTYL!
Coach!