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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Larry and others,<o:p></o:p></p><p class=MsoNormal>You may want to check the life expectancy of your valve springs.<o:p></o:p></p><p class=MsoNormal>This is the only thing I could think it could be with everything else checked.<o:p></o:p></p><p class=MsoNormal>Good Luck,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Rusty Lesher<o:p></o:p></p><p class=MsoNormal>1959 100-6<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Healeys [mailto:healeys-bounces@autox.team.net] <b>On Behalf Of </b>Larry Paterson<br><b>Sent:</b> Wednesday, August 02, 2017 7:36 PM<br><b>To:</b> healeys@autox.team.net<br><b>Subject:</b> [Healeys] Rough running 100M<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-CA>Hi folks – here’s one for you to ponder. For the past many years I’ve raced my 100M without a problem. Lately however at around 4500 RPM under load it balks and stutters running quite rough. I’ve checked timing, changed the condenser several times checked carbs and all the other usual stuff. When not under load it revs freely. The motor has a billet crank, roller rockers, aluminium head, 100S pistons, lightened flywheel etc and regularly ran up to 6500 – 7000 RPM with no issues. It also has a Mallory distributor and is running 24 degrees of advance. Any advice on where to look next would be much appreciated.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA>Thanks<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA>Larry Paterson<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA>100M, BN7, <o:p></o:p></span></p></div></body></html>