I have a 1998 - 1200 Custom Sportster that I keep having problems with,
namely the head gaskets. I bought the bike about 1200 miles ago and since then I havn't been able to make it more than 300 miles before either the front or rear head gasket blows. I have seen two different mechanics that both seam intelligent and fix the issue temporarily. However, I can't make it past 300 miles so something is wrong other than just the gaskets. I have had expensive high performance copper gaskets in, standard H-D ones and multi-part gaskets. All have either blown or leaked within 300 miles.
Recently, something new happened however... The short rear left head bolt actually vibrated all the way loose and fell out the other night while riding down the interstate. While at the time it occurred to me that this is a pain in the *** and I want to get rid of the bike at this point(Being the 5th time dealing with head issues), I realized that the whole time its probably just been the head bolts loosening from riding and eventually blowing the gasket. I'm not exactly sure what the extent of motor work has been from previous owner's, but I can say it's got two new jugs, new head bolt studs, new head bolts, checked w/ machine guy on the head / jug CNC'ing and it all checks out good, possibly upgraded cam and a couple other things added.
That being said, is there anyone that knows how to remedy this problem?
I've heard people say there is a locking type head bolt, others never heard of it.
All the times it has been redone the mechanic assured me he did it correctly with the right pattern and torque spec's according to the book.
I am hoping to find some sort of solution, if anyone has any ideas that would be wonderful. This has been a headache for my dad and I all summer as we have tried to take a few nice rides and been stranded several times.
Thanks for any suggestions in advance!