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I had that happen, and its why I hate Helicoils in the spark plug holes! Head is probably melted out and junk now but if your going to replace it anyway... FI will go to 1776 easily with a stock or close cam, just raise the fuel pressure about 3 lbs. You dont want to just put bigger cylinders on it though... you need to have the case machined to accept the thick walled 88's. the slip ins wont last long at all. 1679 you can go to safely, 1776 will reduce the engine life by about 30% ane run hotter... so not the thing to do if your towing anything. Keith > Hi everybody! While on our happy holidays in New Jersey, one of the spark plugs blew out and I noticed it had a heli-coil on it already. The head is stripped, so I tried to JB Weld it but it did not hold more than 20 miles. Drove home (120 miles) on the three remaining cylinders. We plan on getting new heads and pistons and cylinders. Our question is can we get bigger pistons without interferring with the fi? If not how big can we go without any machining? Any and all help deeply appreciated!!! Amy and Ollie ;-) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~