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RE: Help! compression ??'s
By Bob - 02/24/2002 9:34:05 AM; IP 65.80.202.151
First with the thick, 0.045 compositiion gasket, I get 10.1 assuming your bore is stock.

Open up the combustion chambers by unshrouding the valves and smoothing the floor. You should be able to get to add three cc's to the combustion chamber volume and get down to 9.8 this way.

You will need to get to 78 ccs for a 9.5 ratio. Probably not possible unless you spend lots hours in the combustion chambers with a grinder.

The other option is to cut a dish in the top of the pistons on a lathe. You should be able to get a circle 3-1/2 nches in diameter, at least half as deep as the valve reliefs. I did this once but don't recall the actual new piston cc'c.
This thread, so far...
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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 <b>RE: Help! compression ??'s</b>&nbsp;-- <font color=#0000ff>Bob, <i>02/24/2002</i></font>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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