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> 4age vs 7afe, looking for dyno
post Dec 20, 2005 - 4:22 PM
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95ST

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Im looking for dyno graphs of 7afe and 4age, Im interested in possibly doing this swap, however I would like to beable to compair the powerbands of the 2. I am concerened with the low end powerband of the 4age. Any help would be greatly appreciated.

Steve
 
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post Dec 25, 2005 - 1:49 AM
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Kwanza26



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The 7AFE doesn't make more torque than the 4AGE... ever... except maybe under 2000 rpms. The 7A reaches its max torque faster (under 2000 rpms) but it flattens off and trails. That's the quick pick-up you can feel with engines like the 7AFE and 5SFE. Unlike those, horsepower engines have very flat torque delivery in the low-end, but pick up as the engine revs higher. You don't feel this as much because there is already rotation and movement to absorb that torquey feel. This is why when Toyota people drive something like... say... a Honda S2000... they're like... "Huh? where's the torque. Torqueless wonder" and so on and so forth. The S2000 makes much more torque at any given point than your typical 5SFE... but it just delivers it on the opposite end of the spectrum. Say if you shift however... with the 5SFE at redline and the S2000 at redline... you reach a dead spot where the engine makes no power... then when you reach the next gear and mash on the throttle... the S2000 with pull significantly harder that the 5SFE powered car. This is comparable to the dead-stop or low-range torque of the 5SFE...


--------------------
"It's ok to be naked girl... I'm an artist!"

1995 AT200 Celica ST: stocked out daily driver...

1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies...

1991 SW2x MR2 n/a: bare bones hardtop model soon to be...

Posts in this topic
- 95ST   4age vs 7afe   Dec 20, 2005 - 4:22 PM
- - playr158   off the line the 4a will lag a little but is much ...   Dec 20, 2005 - 4:29 PM
- - 95ST   yeah, but Im looking at the daily driving aspect o...   Dec 20, 2005 - 4:48 PM
|- - Dr_Tweak   QUOTE(95ST @ Dec 20, 2005 - 9:48 PM)...   Dec 20, 2005 - 11:29 PM
- - 95ST   r u saying the 4age is a dog below 4,000? or is it...   Dec 21, 2005 - 12:05 AM
- - Dr_Tweak   The 7AFE is a dog below 4000, lol. Below 4000 th...   Dec 21, 2005 - 1:05 AM
- - 95ST   below 2000 isnt much of a problem dont spend much ...   Dec 21, 2005 - 7:02 PM
|- - nik   QUOTE(95ST @ Dec 21, 2005 - 6:02 PM)...   Dec 21, 2005 - 7:11 PM
- - 95ST   Im more interested in the high end of the 4a howev...   Dec 21, 2005 - 7:17 PM
|- - nik   QUOTE(95ST @ Dec 21, 2005 - 6:17 PM)...   Dec 21, 2005 - 7:22 PM
- - 95ST   I will deffinatly hit him up if I have any questio...   Dec 21, 2005 - 7:32 PM
- - Kwanza26   The 7AFE doesn't make more torque than the 4AG...   Dec 25, 2005 - 1:49 AM
- - akiyama   7afe has an economical head design compaired to th...   Dec 26, 2005 - 2:50 AM
|- - 95ST   QUOTE(akiyama @ Dec 26, 2005 - 12:50...   Dec 28, 2005 - 8:52 PM
|- - nik   QUOTE(95ST @ Dec 28, 2005 - 7:52 PM)...   Dec 29, 2005 - 11:38 AM
- - nik   hey Kwanza26 whats your opion on 7age?   Dec 27, 2005 - 11:39 AM
|- - Kwanza26   QUOTE(nik @ Dec 27, 2005 - 4:39 PM) ...   Dec 27, 2005 - 9:44 PM
- - Kwanza26   It's very hard to build a 200whp n/a toyota en...   Dec 29, 2005 - 5:32 PM
|- - nik   QUOTE(Kwanza26 @ Dec 29, 2005 - 4:32...   Dec 29, 2005 - 5:52 PM
|- - Kwanza26   QUOTE(nik @ Dec 29, 2005 - 10:52 PM)...   Dec 29, 2005 - 6:13 PM
|- - 95ST   QUOTE(nik @ Dec 29, 2005 - 3:52 PM) ...   Dec 29, 2005 - 9:50 PM
- - pure_dx   ^agreed, im not looking for 200whp for my st eithe...   Dec 30, 2005 - 1:20 AM


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