Bolt on cylinder head snapped.

DarrenJ · Renault 5 Driver Joined: 30 Sep 2004 Karma :

On the cylinder head one of the four bolts has snapped off. Will I have to get it fixed or will it be alright running of three?

tatters · Exxon Valdez Joined: 05 Jan 2004 Karma :

you should really get it replaced or your cyclinder head might leak.

what bike is it by the way?
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Past:NRG50,AF1125(x2),NSR125RR,ZZR250,CX500,VFR400,KR1S,ZZR600(x2),CB400N,YZF1000(x2),KH125,Z200,FX400R,CBR954RR(x2)GPZ500S,GT550,VFR750F(x2),RD350N,XR650R,CBR600F,CB250,KDX250,YZF750R,CRM250,400EXC,KLR650,TTR600RE,DR350S,R100GSPD,RGV250,VMAX1200,DL650,KZ750 Present:G650XC,C12,CRF450X,1190ADV

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Yes, you will need to replace it. If you run the bike for any period of time you will warp the cylinder head and cost yourself even more money replacing it/getting it skimmed.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

BFG · Brolly Dolly Joined: 14 Feb 2005 Karma :

tatters · Exxon Valdez Joined: 05 Jan 2004 Karma :

hopefully if its just the head of the bolt has snaped off you might be able to get a hole of it with a stud extractor or some mole grips. next time you do the cyclinder head bolts up use a torque wreach set to the correct torque and tighten in a opersite sequnce. 1,4,2,3
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Past:NRG50,AF1125(x2),NSR125RR,ZZR250,CX500,VFR400,KR1S,ZZR600(x2),CB400N,YZF1000(x2),KH125,Z200,FX400R,CBR954RR(x2)GPZ500S,GT550,VFR750F(x2),RD350N,XR650R,CBR600F,CB250,KDX250,YZF750R,CRM250,400EXC,KLR650,TTR600RE,DR350S,R100GSPD,RGV250,VMAX1200,DL650,KZ750 Present:G650XC,C12,CRF450X,1190ADV

Frost · World Chat Champion Joined: 26 May 2004 Karma :

If the stud is mashed, take the head off and put a nut onto the stud. put another nut onto i winding down the first to make room.

Undo the lower nut whilst tightening the upper nut crushing the two nuts together. you can then undo the lower nut which will undo the stud completely. Use the same method to put another stud in and put a new bolt on.

hope that helps