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Registered
Join Date: Jul 2011
Location: Dayton Ohio
Posts: 115
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Making a short stroke out on 2.0
Has anyone built and short stroke out of a 2.0? I was told you use 2.7 top end on a 2.0 bottom end. I guess this makes a high revving engine. I was looking for someone with this set up to ask a few questions.
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07-10-2011, 05:55 PM
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Max Sluiter
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That means 2.5 liter short stroke. 90mm pistons and 66mm stroke. The 2.0 already has the shortest stroke crankshaft of any production 911 engine.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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07-10-2011, 06:15 PM
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Registered
Join Date: Jul 2011
Location: Dayton Ohio
Posts: 115
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2.5 short stroke
Is this a pretty good set up for a street car?
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07-10-2011, 06:18 PM
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Max Sluiter
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If you like revving to the moon around town and have short gear ratios, then yes!
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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07-10-2011, 06:26 PM
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Join Date: Apr 2009
Posts: 259
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As Flieger stated, 89 or 90 mm cylinders on a 66mm crank gives you a 2.5SS. If you already have the 2.0 case, great you can go with that ( with some work) and if you do not you can go with any of the later cases, 2.2, 2.4, 2.7 with the 66 crank.
I am running a 2.5SS on the street and really like it. Mine is pretty built but I have been in others, you can putt around town just fine but most 2.5s need/should be reved to get the most out of them...... If not why even go short stroke. Jimmy |
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07-10-2011, 08:36 PM
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Join Date: Feb 2001
Location: I be home in CA
Posts: 7,687
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I just got my 2.5 SS back in my 71. This engine is FAR more streetable than the old T engine that it replaced. I have the stock 901 (911) gears in the transmission and went with Mod Solex Cams. This thing is a stump puller. The power band is just a HUGE improvement. I would do it again.
DanB
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Dan |
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07-11-2011, 03:58 PM
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1971 Porsche 911S
