 What's a 2270?, Displacement clarifications |
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| McMark |
 Apr 18 2018, 11:37 AM
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#1
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914 Freak!  Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None  |
This question comes up every once in awhile, and did again in another thread. Rather than replying there I figured I'd make a new thread.
The 2270 number comes from 96mm pistons and 78.4 as the stroke. I'm pretty sure this 78.4 BS came from building motors for a racing class (probably under 2.3l) where people were trying to get as close to the limit as possible (more power). But the reality is that most 2270 engines are actually just off-the-shelf 78 stroke cranks. So 2258 is a better general reference term, I'd say it's more representative of what the engine is. But it doesn't roll off the tongue. I've moved to simply referring to them as 2.3l engines. If you REALLY want to be accurate, the '2270' that I'm assembling right now had a crank 78.26 and a 96mm bore. So really it's a 2266... (IMG:style_emoticons/default/rolleyes.gif) So call it a 2270, a 2258, or a 2.3l -- they're all the same idea and none are really all that accurate. |
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| Mblizzard |
Apr 19 2018, 10:26 AM
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#2
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
Nice displacement calculator here based on bore and stroke.
Mine comes out at 2.368. can I round to a 3.0? |
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| 914four |
Apr 22 2018, 09:50 AM
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#3
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Senior Member Group: Members Posts: 510 Joined: 4-March 07 From: Rainbow City, Alabama Member No.: 7,582 Region Association: South East States 
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QUOTE(Mblizzard @ Apr 19 2018, 11:26 AM)  Nice displacement calculator here based on bore and stroke. Mine comes out at 2.368. can I round to a 3.0? When using this calculator and the information from the Type IV Store for their 2563-190 engine kit I get 2.549. (78mm Stroker Crankshaft Ct/Wt T1RJ 102mm Nickies™ Performance Billet Aluminum Cylinders) How do they get to 2563? With all of this information it seems this would be referred to as a 2.6L and possibly the ultimate Type IV engine for a very spirited daily driver. (IMG:style_emoticons/default/biggrin.gif) |
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| Mark Henry |
Apr 22 2018, 07:22 PM
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#4
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(914four @ Apr 22 2018, 11:50 AM) QUOTE(Mblizzard @ Apr 19 2018, 11:26 AM) Nice displacement calculator here based on bore and stroke. Mine comes out at 2.368. can I round to a 3.0? When using this calculator and the information from the Type IV Store for their 2563-190 engine kit I get 2.549. (78mm Stroker Crankshaft Ct/Wt T1RJ 102mm Nickies™ Performance Billet Aluminum Cylinders) How do they get to 2563? With all of this information it seems this would be referred to as a 2.6L and possibly the ultimate Type IV engine for a very spirited daily driver. (IMG:style_emoticons/default/biggrin.gif) That's what I have in my '67 bug, with the right cam and header around 180hp. My crank is old school so it's 78.4, 2562cc or 2.6L QUOTE(Mblizzard @ Apr 22 2018, 08:52 PM) Isn’t there a 78.5 crank? 78.4mm it's the max using VW T1 rods, all newer cranks are 78mm. |
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Posts in this topic
McMark What's a 2270? Apr 18 2018, 11:37 AM
BeatNavy Thanks for the info, Mark! I always enjoy bei... Apr 18 2018, 11:42 AM
McMark Having said that, "2.3" is nice and succ... Apr 18 2018, 11:45 AM Jeff Bowlsby
Having said that, "2.3" is nice and suc... Apr 18 2018, 06:56 PM McMark [quote name='McMark' post='2600549' date='Apr 18 2... Apr 19 2018, 05:32 AM SirAndy So really it's a 2266...
And since y'all ... Apr 18 2018, 11:43 AM BPic
So really it's a 2266...
And since y'all... Apr 18 2018, 11:46 AM 914werke
Having said that, "2.3" is nice and suc... Apr 18 2018, 02:22 PM Chris914n6 I thought the 78mm was the largest that would spin... Apr 18 2018, 03:32 PM McMark
I thought the 78mm was the largest that would spi... Apr 19 2018, 05:42 AM Mark Henry Rounding has always been done, manufacturers are t... Apr 19 2018, 07:59 AM Mueller Is that long stroke + smaller bore more favorable ... Apr 18 2018, 07:16 PM McMark
Is that long stroke + smaller bore more favorable... Apr 19 2018, 05:39 AM Mblizzard
[quote name='Mblizzard' post='2600819' date='Apr ... Apr 22 2018, 06:52 PM JmuRiz Just put one of these on the engine grill :D
Funny... Apr 19 2018, 10:48 AM |
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