<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body><div><div style="font-family: Calibri,sans-serif; font-size: 11pt;">Hi Jim,<br>I have heard about experiences like those of your friend many many times.<br>I would suggest that the machinist who did your engine had previously encountered problems with bronze guides and hogged them out to provide lots of clearance.<br> As explained in my article there are penalties associated with doing that but excessive clearance does minimize the possibility of a catastrophic engine failure caused by the head of a valve going through a piston.<br>The thing is however that if it is necessary to make the clearances larger than those of the cast iron guides that you are replacing then why bother changing them at all.<br>Michael S<br>BN1 #174</div></div><div dir="ltr"><hr><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">From: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;"><a href="mailto:healeymanjim@hansencc.net">healeymanjim</a></span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">Sent: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;">27/01/2016 11:13 p.m.</span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">To: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;"><a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a></span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">Subject: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;">[Healeys] bronze guides</span><br><br></div>i have had bronze guides now for about 18 years with no problem. friend had them put in his bj8 and we had to pull head <br>and take it back to machinist because of valves hanging up. still had a little problem on one valve, but it eventually wore in. <br>appears to be a machinist problem on the ones i am familiar with.<br>_______________________________________________<br>Support Team.Net http://www.team.net/donate.html<br>Suggested annual donation $12.75<br>Archive: http://www.team.net/archive<br>Forums: http://www.team.net/forums<br><br>Healeys@autox.team.net<br>http://autox.team.net/mailman/listinfo/healeys<br><br>Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com<br><br></body></html>