OldMiniBikes.com Forum - View Single Post - Silicone(?) used to repair leaking head bolt

bugman53 · 08-28-2008, 01:51 AM

better idea get a copper washer used in banjo bolts and brake lines and put it under the leaking bolt and that will seal that leak.

But really silcone to fix a head bolt. I not trying to insult anyone but that suff might old 5psi not 150 psi in a cylinder head. If its just a oil leak then thats different but a head bolt.

If is leaking compression then have the head surfaced. and get a good gasket and there will not be a leak. Its a flat head, not a OHC watercooled race motor(and yes i build race motors for a living)

But the copper washer would hold. My concern is hot gases geting past the fire ring in the head and causing the gasket to burn up.

If a head gasket ever leakes for a few seconds then the gasket is toast.

08-28-2008, 01:51 AM	#14 (permalink)
bugman53 Junior Member Join Date: Aug 2007 Posts: 14 iTrader: (0) View My Photos	better idea get a copper washer used in banjo bolts and brake lines and put it under the leaking bolt and that will seal that leak. But really silcone to fix a head bolt. I not trying to insult anyone but that suff might old 5psi not 150 psi in a cylinder head. If its just a oil leak then thats different but a head bolt. If is leaking compression then have the head surfaced. and get a good gasket and there will not be a leak. Its a flat head, not a OHC watercooled race motor(and yes i build race motors for a living) But the copper washer would hold. My concern is hot gases geting past the fire ring in the head and causing the gasket to burn up. If a head gasket ever leakes for a few seconds then the gasket is toast. __________________ 1968? Bird(10inch wheels..model?) w\a 5hp briggs(stock was a 3.5 tec) 1971 Rupp roadster 4hp Tec. 1972 Honda Mini Trail z50 (under restoration) 2005 Kawasaki ZX10R W/172RWHP..394lb. wet...