http://autos.groups.yahoo.com/group/mc-engine/ mc-engine Fri, 20 Nov 2009 17:39:35 GMT Michael Moore http://autos.groups.yahoo.com/group/mc-engine/message/16840 http://autos.groups.yahoo.com/group/mc-engine/message/16840 Greg, I used regular 1018 mild steel sheet. I think the Ally megaphone was about .035" thickness. I don't think there's any need for aluminum- killed sheet Fri, 20 Nov 2009 12:06:21 GMT gregsummerton http://autos.groups.yahoo.com/group/mc-engine/message/16839 http://autos.groups.yahoo.com/group/mc-engine/message/16839 I've yet to try hyroforming....mainly due to lack of time and other more important things, but also partly due to not being able to find a deep drawing steel Thu, 19 Nov 2009 20:25:34 GMT ariel http://autos.groups.yahoo.com/group/mc-engine/message/16838 http://autos.groups.yahoo.com/group/mc-engine/message/16838 hi guys, I finally torqued the head down. Using a VW Beetle head stud as material and making it into a stud type instead of the original bolt type, I haven't Thu, 19 Nov 2009 14:48:02 GMT Guy http://autos.groups.yahoo.com/group/mc-engine/message/16837 http://autos.groups.yahoo.com/group/mc-engine/message/16837 ... We had acustomer years ago who had a run of bottom end failures on his pre-unit Triumph Moto-X sidecar outfit. My boss suggested using bolt stretch (which Thu, 19 Nov 2009 14:16:10 GMT ForestDruid http://autos.groups.yahoo.com/group/mc-engine/message/16836 http://autos.groups.yahoo.com/group/mc-engine/message/16836 Thanks Pete, I'll keep that in mind for next time. I was thinking that the butt weld would be the best way to go at it. I tell ya tho, hydroforming sure beats Thu, 19 Nov 2009 01:58:03 GMT Michael Moore http://autos.groups.yahoo.com/group/mc-engine/message/16835 http://autos.groups.yahoo.com/group/mc-engine/message/16835 In case anyone might be interested: http://www.eurospares.com/graphics/engine/V175splitheadrightside01.jpg This is for the right cylinder. The red line shows Wed, 18 Nov 2009 17:59:16 GMT Pete Snell http://autos.groups.yahoo.com/group/mc-engine/message/16834 http://autos.groups.yahoo.com/group/mc-engine/message/16834 I'm a little late on this, (just catching up on the digests),but thought I'd chip in. On the pipes I've done, the radius of bend will shrink somewhere between Wed, 18 Nov 2009 17:04:56 GMT Ken Augustine http://autos.groups.yahoo.com/group/mc-engine/message/16833 http://autos.groups.yahoo.com/group/mc-engine/message/16833 Old style Triumph connecting rod bolts were specified to be tightened to a stretch dimension as you mention but that required access to both ends of the Wed, 18 Nov 2009 14:32:45 GMT hans_o_man http://autos.groups.yahoo.com/group/mc-engine/message/16832 http://autos.groups.yahoo.com/group/mc-engine/message/16832 Hi there. Over torquing caused by lower thread-friction is one reason, why sometimes HeliCoil?-inserts are pulled out by correct torque. The coil has against Wed, 18 Nov 2009 13:00:45 GMT Ian http://autos.groups.yahoo.com/group/mc-engine/message/16831 http://autos.groups.yahoo.com/group/mc-engine/message/16831 ... Bolt stretch is the only reliable method of tensioning a bolt, not always possible or practical; but the only way to do it properly. Combined with a torque Wed, 18 Nov 2009 10:29:45 GMT Arthur Middleton http://autos.groups.yahoo.com/group/mc-engine/message/16830 http://autos.groups.yahoo.com/group/mc-engine/message/16830 ... The Honda factory workshop manual specified torque on an axle nut on one of my bikes is 70Nm which is not easily attainable by a normal person with the Wed, 18 Nov 2009 10:13:27 GMT gregsummerton http://autos.groups.yahoo.com/group/mc-engine/message/16829 http://autos.groups.yahoo.com/group/mc-engine/message/16829 ... Some time ago I found this on the net, somewhere: "When tightening bolts to specified torque settings, unless otherwise stated, torque firgures generally Tue, 17 Nov 2009 19:25:24 GMT Danny Whitfield http://autos.groups.yahoo.com/group/mc-engine/message/16828 http://autos.groups.yahoo.com/group/mc-engine/message/16828 ... Harley had a problem with head gasket failure on their first EVO engine (first US made engine with thru Studed cylinders) untill they changed the spec to: Tue, 17 Nov 2009 18:56:48 GMT Arthur Middleton http://autos.groups.yahoo.com/group/mc-engine/message/16827 http://autos.groups.yahoo.com/group/mc-engine/message/16827 ... Makes the cost of an expensive torque wrench for general work on bikes seem somewhat redundant. As long as the cheapo wrench doesn't break down completely. Tue, 17 Nov 2009 18:30:17 GMT john fisher http://autos.groups.yahoo.com/group/mc-engine/message/16826 http://autos.groups.yahoo.com/group/mc-engine/message/16826 Arthur Middleton wrote: ... one of those many, redundant links said quite specifically that you must find out whether the original spec was dry or lubed. I bet