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Registered
Join Date: Jan 2000
Location: South NJ
Posts: 2,516
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Octane, timing, etc. on hot 2.7
I'm finishing up an install on a single plug, 10.5 to 1, weber carbed 2.7 from a reputable builder. Race gas is in my future, and the car will be 90% track.
Right now timing is 30 degrees BTDC at 6000 rpm. What process would you follow to further dial in the timing? Or just leave it there?
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Todd Doing business with leebparts? http://forums.pelicanparts.com/porsche-911-used-parts-sale-wanted/555068-attn-leebparts-please-contact-me.html |
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02-19-2012, 03:11 PM
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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,492
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Todd, You should be able to go as far as 35 to 38BTDC. Hot fuel and a good spark will keep the fire stable. Put some miles on it, move it up to 35 before you rev it tight.
Bruce |
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02-19-2012, 04:35 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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As an addendum to Bruce's comments, I'd recommend keeping 30 degrees until 100% race gas is in the fuel tank.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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02-19-2012, 10:44 PM
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