small bore, high revving 6, anyone running one now? |
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small bore, high revving 6, anyone running one now? |
DanT |
Dec 18 2010, 10:12 AM
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#1
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Going back to the Dark Side! Group: Members Posts: 4,300 Joined: 4-October 04 From: Auburn, CA Member No.: 2,880 Region Association: None |
I have the chance to acquire an 2.0L 6 case and have thought about building a small bore 2.0-2.5L high revving 6.
Anyone out there running such a combination right now? This would be a street/AX motor. Prefer to do single plug. Most likely use Webers, since MFI parts are getting hard to come by . What combinations of Pistons/cams are you folks using? Pictures of motor builds would be appreciated. Just sliding in a 2.7L CSI motor is also a consideration if the small bore motor becomes too much of a pain. (IMG:style_emoticons/default/biggrin.gif) |
GeorgeRud |
Dec 18 2010, 03:41 PM
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#2
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Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
The 66mm crank with the 90 mm piston bore does make a great sounding, high revving engine, but it will cost money to do correctly. They were popular in the early 70s as it could be used in the under 2.5 liter racing class.
Though they're usually maligned, the 2.7 does give nice grunt and revs quite well compared to the later, larger engines. In an autocross engine, I think that high torque should be the primary objective. That is achieved most easily with a larger displacement engine. |
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