2.4 variations and long rod
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From: marion,virginia
2.4 variations and long rod
could some one post the possible variations of the 2.4
and can you still come out with a 2.4 with a long rod ( do you use a certain crank)?
crank rod displacement ratio
100mm 150 2.4
100 156 ?
100 162
94mm 150 ?
94 156
94 162
88 ?
etc. this would help alot i just get confused so quickly sorry and havent made my mind up
if you cant use a certain various just say so i am trying to lean as much as i can
and can you still come out with a 2.4 with a long rod ( do you use a certain crank)?
crank rod displacement ratio
100mm 150 2.4
100 156 ?
100 162
94mm 150 ?
94 156
94 162
88 ?
etc. this would help alot i just get confused so quickly sorry and havent made my mind up
if you cant use a certain various just say so i am trying to lean as much as i can
there are several threads on this.
https://www.evolutionm.net/forums/ev...reat-idea.html
Or find the "2.1, 2.2, 2.3, 2.4L" thread.
for 100mm cranks in a 4g64 block... you can do of course a 150mm rod, a 156mm rod, and possibly longer. But off the shelf solutions are the 150 and 156mm rod.
Given that the stroke is 100mm... its easy to calc the r/s ratio. 1.5:1 and 1.56:1
https://www.evolutionm.net/forums/ev...reat-idea.html
Or find the "2.1, 2.2, 2.3, 2.4L" thread.
for 100mm cranks in a 4g64 block... you can do of course a 150mm rod, a 156mm rod, and possibly longer. But off the shelf solutions are the 150 and 156mm rod.
Given that the stroke is 100mm... its easy to calc the r/s ratio. 1.5:1 and 1.56:1
Last edited by R/TErnie; Jan 16, 2011 at 05:38 PM.
could some one post the possible variations of the 2.4
and can you still come out with a 2.4 with a long rod ( do you use a certain crank)?
crank rod displacement ratio
100mm 150 2.4 (1.5 r/s 2.4L)
100 156 ? (1.56 r/s 2.4L)
100 162 (1,62 r/s, will never fit!)
94mm 150 ? (1.59 r/s 2.2L)
94 156 (1.66 r/s 2.2L)
94 162 (1.72 r/s 2.2L lost of work to get it to fit!)
88 ? (150 1.70 r/s, 156 1.77 r/s, 162 1.84 r/s 2.1L)
etc. this would help alot i just get confused so quickly sorry and havent made my mind up
if you cant use a certain various just say so i am trying to lean as much as i can
and can you still come out with a 2.4 with a long rod ( do you use a certain crank)?
crank rod displacement ratio
100mm 150 2.4 (1.5 r/s 2.4L)
100 156 ? (1.56 r/s 2.4L)
100 162 (1,62 r/s, will never fit!)
94mm 150 ? (1.59 r/s 2.2L)
94 156 (1.66 r/s 2.2L)
94 162 (1.72 r/s 2.2L lost of work to get it to fit!)
88 ? (150 1.70 r/s, 156 1.77 r/s, 162 1.84 r/s 2.1L)
etc. this would help alot i just get confused so quickly sorry and havent made my mind up
if you cant use a certain various just say so i am trying to lean as much as i can
Thread Starter
Evolving Member
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From: marion,virginia
now using different sized cranks and rods will move the power and torque curve around and if so where will the power be using 100mm 156 compared to a 150 rod same with the 94mm 156
i am going to be running stock sized valves and kelford 280/282 cams
i am going to be running stock sized valves and kelford 280/282 cams
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Evolving Member
Joined: Dec 2009
Posts: 214
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From: NY
Well rod/stroke ratio affects the motion on the piston (essentially a sin wave) and can tweak it a little.
Gross oversimplification- The lower the R/S rato, the "torquier" the engine will feel.
So take a look at the R/S ratios above and compare what you want
Gross oversimplification- The lower the R/S rato, the "torquier" the engine will feel.
So take a look at the R/S ratios above and compare what you want
Evolving Member
Joined: Dec 2009
Posts: 214
Likes: 1
From: NY
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