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Registered
Join Date: Sep 2007
Posts: 201
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Will 2.7 heads fit a 2.4?
Will 2.7 heads fit a 2.4?
It looks like the bore dia. is ~.25" difference, so I'm concerned about that fitting up right. Working on SVRA spec race car, and 2.7 displacement will bump me up a class, I'd rather stick with the 2.4 for now, but was thinking the 2.7 might be a little better head+ give me a 2nd set to send off for machining etc. |
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03-16-2008, 06:17 PM
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Registered
Join Date: Mar 2006
Location: Philadelphia Pa
Posts: 1,275
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I always thought the heads were the same. I think the port sizes might be different.
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1997 911 Carrera Cabriolet 66 912, 67 912 Outlaw 65 Ac Cobra reproduction 2012 Audi A8L 1999 Ferrari 360 Modena |
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03-16-2008, 06:45 PM
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Registered
Join Date: Oct 2003
Location: Central Fla
Posts: 1,864
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2.7/2.4 heads
The heads are interchangable, but the chamfer on the 2.7 is for a 90mm bore and that will gain some head vol., if we use those for smaller bores they get welded and remachined, another tip is to weld up the huge spark plug relief area or reduce them to 12 mm plugs, other than that the valves are the same size, the ports will vary from year to year and they are an easier head to find.
Mike Bruns JBRacing.com
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The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago. |
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03-17-2008, 05:40 AM
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