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) |
brant |
Dec 18 2010, 03:23 PM
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#2
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914 Wizard Group: Members Posts: 11,639 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
I put 100 racing hours onto a 2.0/6 with an aluminum case
it was all S spec, real 67S heads, cams, Counter balanced crank, pistons-cylinders, stock 2.0S rods it was great and only 9.8 compression (factory) 147hp to the wheels at 5000ft of altitude on a 104F day is not anything to sneeze at for a stock motor We would usually shift between 7200-7500 and loved it the quick revs (5lb tilton clutch and flywheel) are awesome I really like the small bore stuff and its so "right" sounding new motor is a small spigot 7R case (these are kinda hard to find, but slightly stronger than the 5R cases) I haven't driven it yet, but can't wait 66 counter balanced crank, big valves, 81mm pistons of just under 11:1 compression, twin plug, Pauter rods, lots and lots of head work with race cams shooting for a little over 200hp and probably will shift at 7500rpm (although the safe zone is somewhere around 8,500 rpm) builder said that rpm is only dependent on how long you want it to last I'm a huge fans of the small bore motors used to have an SC 3.0, and the motors are nothing alike.. really love the small bores. Attached image(s) |
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