2T-G Rebuild/Restoration

[diss7]

Long time reader, first time poster.

Its my cars 40th birthday this year, so I'm spending some coin on it getting it perfect. Not a lot needs doing really. A couple of niggly things that annoy me. Mechanicals are all cherry, but near stock. I'd like to get the 2T-G in the range of 150-200rwhp. Want to keep it all period. Carbs, NA, high compression. Ideally I'm after a shop to send my motor to, and get a crate motor in return, tuned and all, (my motor of course, got to keep the matching numbers!)

Want to deal with a shop that knows the 2T-G, and want to have an idea of what I need to do it. I have been trying to talk to the Kameari guys in Japan (http://www.kameariengineworks.co.jp/) Because their gear is schmick, but the language barrier is a pita. Have been recommended on another forum to talk to BRD Racing in the States (Welcome To BRD Racing: Your Toyota 3TC and 2TC Performance Specialist) I'll call them on Tuesday.

Is there anyone I should be talking to locally? I'd want to see their previous work and all that jazz.

[river]

Hi,

150-200rwhp on a 2T-G is possible, but not sure if it's going to be very street friendly. They developed about 120hp at the fly, so by the time you go through the drive train you'd be looking at less than 100hp at the wheels. To get the extra power you need will require a bore/stroke to get it to around 2litre in size, some hefty cams and high compression - maybe some valve/head work and good extractors. By the time this is all done, to get the power you require, the engine will be a very different motor to what you had. When you start to pull this power from an NA 2T-G you will find it peaky in a power band and therefore a pretty angry motor. Angry motors are great on the track, but for daily street driving they are a pain.

There's more than a handful of people on these forums who have tried this, and ultimately rarely drive their car on the roads for anything other than a short drive because the engine is built more for track work than being nice and easy to use on the streets.

seeyuzz
river

[diss7]

Hi River,

That is pretty much how I drive my car anyway. Just puttering around once a fortnight, clearing its throat every now and then. That said I don't want something that is a complete nightmare. I'm not chasing a specific HP figure. I don't want it to be a dog under 5k, but it make 200hp at 8000rpm. I don't think I will ever put it on a track (There's none I know of in NQ anyway, well except for a little track/training course in Proserpine)

[J-M kujala]

i have make deal with BRD more sell than buy... ok but nowhe is lazy to answer and post things, i have hear a lot problems (close friends)

Kameari, so much question, so big language barrier, good shop to deal with.. i have make some orders..

150-200 whp with 2TG crank 150 Rwhp is possible.... with 4Y crank or maybe with 3T crank 200 WHP possible.

i will recommend to a street ~150 whp 2TG with 3T crank, but you need a better head and engine than just buy a parts, you need matched exhaust, cams, cc , hea, intake, tuning... 80 hp / liter, peace of cake at 2TG to get over that, need to know something....

[river]

Hi,

Yes, most use the 3T crank to lengthen the stroke, which gives approx 200cc extra capacity. The boring out gives approx another 200cc... bringing you up to about 1900-odd cc in capacity. This is getting near 18R-G displacement and they don't pull 150-200rwhp, in NA form, unless some hefty work is still done to the engine. This is the reason why most people go turbo to get the extra power as it is a cheaper upgrade than all the necessary work to get the NA a lot more power. I lvoe the sound of an NA 2T-G or 18R-G screaming its tits off, but it is not cheap to get that power without a lot of work (for NA).

You can send a PM to Jason (YellaRolla) on the forums as he has done a few 2T-G and 18R-G rebuilds - both NA and turbo. He knows his stuff and builds lovely engines. He is Sydney based and a member of these forums. You can discuss with him your requirements and he will be able to advise on performance, cost and expectations for the engine.

seeyuzz
river

[MorGo]

NA power from 2T-G/18R-G engines is difficult to do.Main culprit is the huge piston dome needed for high compression and that is bad for combustion (this is why they love flat-tops and booost).Sure,there is quite powerful engines around but many times bit down on what they should give considering what they flow and cammed.
Always when you increase the displacement (either boring or stroking) the easier it is to make compression without the huge dome.

But to the point;get about 10-11:1 comp,get good seatwork and mild porting,35 mm venturis in carbs and cams around 270-285 duration with as much lift as possible.Free flowing exhaust and good tune should get you around 160 hp and good manners.

My -74 Carina did low 15's with -222 head (home ported) and cams.Only non-stock thing was the 8,5:1 18R-G pistons.That make the size 1722 cc.What the comp was;no idea.That was around 1990.

[BrianGT]

I have 150 bhp out of my 2tg and when I swap the chokes in the Dell Orto's the rolling road guy reckons I'll have around 160bhp....but it's not easy bhp.....it all happens above 5k and it's not that great to drive in traffic.
However.....driving it is an occasion and so I put up with it but it would be different if it was my daily driver...