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RE: 10-10.5 or 11.1 w/ premium fuel.
By Ray - 02/25/2002 12:19:48 AM; IP 66.81.144.207
Let me explain, it's a way of controling detonation or preignition even in a 11to 1 motor. The problem is most engines need to be tuned for that high compression, but rarely are. Most of pinging or detanation accurs becouse your burn- is completed before the piston reaches TDC, it's trying to push the piston backwards! It then develops want they call a duell flame front, it's actually burning metal at that point and not controled at all. If you set up your advance in your distributor so it comes on slower and limit the amount of advance, say no more than 28 to 32 degrees total advance ( depend on the engine). But you still have a ping to it, you'll fatten (jet) up the primaries to about .004 to .006 to start with or untill the ping goes away. What your are doing is slowing the down the burn time so that its completed just as reaches TDC or after. What you are doing is finding the right air fuel ratio for that particular timing and compression. Ray PS, polished chambers will also help in more ways than one.
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Collapse <a href=../ForumFE/reply.aspx?ID=11616&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11616" onclick="return false;">Help! compression ??'s</a>&nbsp;-- <font color=#0000ff>Robbie, <i>02/24/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11616', contentMargin: 60, icon: $('anchor11616') }); </script>  Help! compression ??'s -- Robbie, 02/24/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11617&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11617" onclick="return false;">RE: Help! compression ??'s</a>&nbsp;-- <font color=#0000ff>Bob, <i>02/24/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11617', contentMargin: 60, icon: $('anchor11617') }); </script>  RE: Help! compression ??'s -- Bob, 02/24/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11618&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11618" onclick="return false;">RE: Help! compression ??'s</a>&nbsp;-- <font color=#0000ff>Robbie, <i>02/24/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11618', contentMargin: 60, icon: $('anchor11618') }); </script>  RE: Help! compression ??'s -- Robbie, 02/24/2002
 RE: Help! compression ??'s -- Jim, 02/24/2002
 RE: Help! compression ??'s -- Bob, 02/24/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11623&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11623" onclick="return false;">Factory spec was 10-10.5 See this page...</a>&nbsp;-- <font color=#0000ff>Mr F, <i>02/24/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11623', contentMargin: 60, icon: $('anchor11623') }); </script>  Factory spec was 10-10.5 See this page... -- Mr F, 02/24/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11625&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11625" onclick="return false;">RE: Factory spec was 10-10.5 See this page...</a>&nbsp;-- <font color=#0000ff>Bob, <i>02/24/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11625', contentMargin: 60, icon: $('anchor11625') }); </script>  RE: Factory spec was 10-10.5 See this page... -- Bob, 02/24/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11627&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11627" onclick="return false;">RE: Factory spec was 10-10.5 See this page...</a>&nbsp;-- <font color=#0000ff>Robbie, <i>02/24/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11627', contentMargin: 60, icon: $('anchor11627') }); </script>  RE: Factory spec was 10-10.5 See this page... -- Robbie, 02/24/2002
 RE: Factory spec was 10-10.5 See this page... -- Bob, 02/24/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11633&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11633" onclick="return false;">10-10.5 is a workable range w/ premium fuel. [n/m]</a>&nbsp;-- <font color=#0000ff>Mr F, <i>02/24/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11633', contentMargin: 60, icon: $('anchor11633') }); </script>  10-10.5 is a workable range w/ premium fuel. [n/m] -- Mr F, 02/24/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11634&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11634" onclick="return false;">RE: 10-10.5 or 11.1 w/ premium fuel.</a>&nbsp;-- <font color=#0000ff>Ray, <i>02/24/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11634', contentMargin: 60, icon: $('anchor11634') }); </script>  RE: 10-10.5 or 11.1 w/ premium fuel. -- Ray, 02/24/2002
RE: 10-10.5 or 11.1 w/ premium fuel. -- Ray, 02/25/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11641&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11641" onclick="return false;">RE: 10-10.5 is a workable ,also PCV?</a>&nbsp;-- <font color=#0000ff>Robbie, <i>02/25/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11641', contentMargin: 60, icon: $('anchor11641') }); </script>  RE: 10-10.5 is a workable ,also PCV? -- Robbie, 02/25/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11647&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11647" onclick="return false;">OK..you did not mention it...</a>&nbsp;-- <font color=#0000ff>kevin, <i>02/25/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11647', contentMargin: 60, icon: $('anchor11647') }); </script>  OK..you did not mention it... -- kevin, 02/25/2002
Collapse <a href=../ForumFE/reply.aspx?ID=11668&Reply=11616><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor11668" onclick="return false;">"Platinum is a no-no"...please elaborate...</a>&nbsp;-- <font color=#0000ff>Dan Davis, <i>02/25/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=11668', contentMargin: 60, icon: $('anchor11668') }); </script>  "Platinum is a no-no"...please elaborate... -- Dan Davis, 02/25/2002
 RE: "Platinum is a no-no"...please elaborate... -- kevin, 02/26/2002
 RE: 10-10.5 is a workable ,also PCV? -- Ray, 02/25/2002
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