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2tg or 4ag in an old rolla


AE25

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mmkay.. not asking whats better so all things aside reguarding the conversion, power outputs and parts availability etc as i have both available and know the pro's and con's.

the question is, what would be more appealing in an old rolla?

the oldschool power of 2tg or the newer 16v 4ag?

(if 'appealing' is the correct word)

in a ke26 wagon to be precise

to those not into toyotas...

2tg is a 1600 8v twincam with factory 40mm solex/mikuni's that were fitted to jdm te27 levins/trueno's back in 72-73, and other GT spec toys like the ta22 celica and ta12 carina.

4ag is a 1600 16v twincam efi out of an ae86, the last of the rwd corolla's, but would convert to running sideys like the 2tg, or some quad throttles on efi which'll take more work to get running obviously

whats ya thinks?

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id go the 4ag but that just me aye , u can amke a blue top into a redtop by milling 1mm off the head i think :S , dunno if thats tru or not but yea , and 4ages are basically bulletproof arnt they?? love the revs and have heapsa potential

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I'd go 4age.. I played around with a 2tg before and it wasn't that fantastic.. went alright of course but the oil pump was crap and the timing chain was a cunt and they're a heavy beast.

Neither is a very exciting concept but if you're doing the rolla upgrade might as well go for the better of the two. IMO

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id go the 4ag but that just me aye , u can amke a blue top into a redtop by milling 1mm off the head i think :S , dunno if thats tru or not but yea , and 4ages are basically bulletproof arnt they?? love the revs and have heapsa potential

there's two types of retops - big port (high comp bluetop essentially) and small port- small port is 100kw.

Go the 2TG and work it up with the 3T crank etc, and then later on you may be able to transplant a turbo manifold on to it......

you can turb's a 4AG easier.. plus they go better turb'd - can get some mean numbers, even out of a blue top with stock comp - 15psi is do-able on stock ecu.

Neither is a very exciting concept but if you're doing the rolla upgrade might as well go for the better of the two. IMO

No better bang for your buck than a 4AG in a KE... easy horsepower to be had. mega

buy a GZE, ditch the charger, they're shit.... run a t28 or something on there.. will be awesome. with a turbo running 5psi on a 4agze, you'll get better power thn the supercharger running it's stock 8psi. and 300hp on a turb'd 4agze isn't that difficult

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heh :lol: now now guys

thanks for the offer, what kinda prices you lookin at selling the sc12 setup for?

mongol: the smallport 4age has totally different head port size and 4 runner intake rather than the bluetop ~ red/blacktop TVIS 8 runner intake

like my original post said.. ive decided either a carbd 2tg or carbd 4ag for the wagon since its my current daily driver. theres heaps of really good options available with turbo'd 4agze etc and i have a very good knowledge of the 4age differences thanks, but this car is only really a bum around hack to cruise to events, haul parts from da wrecker and drive to work in. no point in some crazy arsed turbo fandangled ball tearing head snapping whiz bang fart popping techo 4pot in there.

i have a 4age'd (n/a efi) ke25 which runs consistant 15.7sec 1/4, std engine with pod and exhaust, single spinner etc. a friend tup in his std 2tg powered ke20 with lsd does low 16's. so the 4ag has a half second advantage. power/weight gains aside (coz im not really interested in that)... im more interested in the thoughts of others whether a 2tg transplant would be cooler than the 4ag? it's still going to go well enough for cruising round in. the 3.3 ratio diff's not going to help any races.

the 2tg will be an easier conversion but the 4ag has more power so im neutral on which one. i'll have to make a carby intake manif for the 4ag anyways. im not going to turbo it since i have two other boosted projects. cars are fun :D too many hurts the pocket :?

and yes like callum said, turbo 2tgeu is a bolt up and i have all the parts available. 4ag requires oil feeds, custom exhaust manif's and all that.

interestingly im about to pull the 3tgte out of the ke70 (which i'd just replaced a couple weeks ago) to put a 2tgeu in for a wof. the neato part is i gonna see if it'll run on the 3tgte wiring and ecu with the 2tgeu injectors to make up for the reduced stroke of the 2tgeu. and for the hell of it since i'd have to change the exhaust to fit the 2tgeu n/a manifold, thinkin to whack a spare 3tgt manifold on it with a turbo and see if i can get away running with the wastegate disconnected and no compressor side plumbed up for wof. probly unlikely but worth a shot, but with the all the heat sheilds on it the turbo's pretty well hidden. then bodge up a front mount i/c for some low boost fun heh. well till i can be bothered chucking the 3tgte back in.

oh and my last 3tgte was blowing up oil filters.. can only think theres an oil gallery blockage somewhere

keep the ideas coming! cheers

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