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Location:
Lost in the K hole
Registered:
May 2002
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 FAQ:: 4A-G Engine Information
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Sat, 07 February 2004 07:39
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FAQ:: Toyota 4A-G Engines
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The following is a compilation of prior threads and other available information on the Toyota 4A-G 1.6L 4cyl engine. It will always be a work in progress, so if feel you have something to contribute, please PM a moderator 
Last Updated Feb 7th 2004
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Relevant Toymods Threads
| FWDboy wrote on Mon, 10 March 2003 11:12 |
To add my $0.02 about the actual 3S-GE v 4A-GE debate (and to try not to mention any motorsport). The early 4A-GE in the Twin Cam 'Rolla produced about 86 kW at 6500ish and 131 nM of torque at 6000rpm or something similar to those figures, the later 1990 Corolla SX had the small port no TVIS 4AGE which came up with about 100kW and 141nM....the later 20 valve motors produced some neat figures but I don't know them. The earliest 3S-GE in the '86 Sleeka SX had 102 kW at 5500(?)rpm (this means you have 172nM of torque at 5500 if you do the sums) and 172nM at 4500 rpm. The reason I think for it having such dull amounts of power from 5500 to the 7000rpm redline is because the intake on that engine is woeful, too small a throttle area, TVIS was part Yamaha-designed crap, and also the multi-valve technology is infantile in design.
The 4A-GEs are great little engines cause you can rev the nuts off of them (if you haven't driven one, go drive one, or maybe drive a CRX if you can to get the idea), the later the model the better. The 3S-GE is a good engine, extremely tough, but it doesn't have the "revability" of the 4A-GE although it has really good pull down low compared to the 4A-GEs.
Later 3S-GEs like in the 1990 MR2 had much better figures, something like 112kW and 180-190nM of torque. And I presume that if you can get your hands on a 3rd gen 3S-GE from the Celica GT (ST202) from japan you'd have a bloody good engine, with good power and good/cheap options for turbo charging etc etc.
Anyway, I personally think it's a matter of horses for courses, I love the 3S-GE in my Celica SX, although it's fairly gutless and could use another 50 or so hp, but I also like the little revvy 1600cc engines like 2TGs, 4A-GEs and even B16A or B16Bs (if you like hondas, I only like their VTEC engines) etc etc. I prefer the 2 litre engine because it can produce really good power when modified, is extremely tough, and it's fun being able to blow off Commodores with a little bit of modiification to an engine half the capacity.
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Other Relevant Web Resuorces
Bill Sherwoods guide to the 4A-GE::
http://www.billzilla.org/4agstock.htm
Phil Bradshaw's guide to the 4A series::
http://home.clear.net.nz/pages/phil.bradshaw/4AGE% 20into%20RWD.htm
http://www.users.bigpond.com/vidore/toyota_4age_en gine.htm
Phil Bradshaw's RWD conversion guide::
http://home.clear.net.nz/pages/phil.bradshaw/Engin e%20Installation.htm
[Updated on: Thu, 11 March 2004 12:14]
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