Wire wheel will remove and damage the aluminum. I recommend a razor blade scraper with a few new blades. Stuff a clean shop rag in the hole and try not to get any junk in there. Be careful not to gouge the aluminum and take your time. The razor will scrape down to the aluminum. Don't use any gasket sealer or bonding agent on the base or head gaskets.
[FONT="Palatino Linotype"]~My Rides (to name a few) ~
1986 ATC250R, 1985 ATC350X
1985 ATC250R Missile (90% done)
1983 ATC185S
1999 TRX416EX
2003 Honda CBR600RR
1990 Yamaha Zuma
1985 XR80 w/100 motor
1967 Honda CB77, '65 CL77
1962 Puch 250 SGS
1984 XR350R (owned since I was a kid)
1972 Suzuki T350 Rebel, '73 T500 Titan
1964 BSA A65 (needs restored)
1968 BMW R60/2 mint original bike
1976 Kawasaki KH500 triple
Anybody have parts to trade for the above models?