2TG vs 18RG vs 3TGTE

**M.J.H** · 04-09-2010, 10:10 PM

Hi

I'm looking at buying an openwheeler that has a 2TG fitted with a supposed 145rwhp and need to know a few things as the car is a little off the pace but is to good a bargain to pass up in my opinion.

Ideally i would like around the 200rwhp from the engine to help push the car along a bit better but I'm not sure if this is possible with a 2TG motor.

I think it would be possible with an 18RG but the problem with this is if it would fit in the space provided. That and the fact that according to some an 18RG can't be revved past 3500rpm or funky time warp/space time stuff happens.

The other option may be a 3TGTE if it is the same bellhousing pattern as a 2TG although this would put the car up a class or two being turbo.

Anyway enough rambling, What I want to know is what are pepoles opinion on the various engine options and what sort of realistic useable power can be expected from each engine wth a budget of around $3-4k to spend.

Thanks in advance.

**Billzilla** · 04-09-2010, 11:54 PM

7AFE with some mods.

**roadkill** · 07-09-2010, 07:29 AM

Hi,

firstly what are the limitations of the class? What engine work has been done?

2t can be bored out a fair way, i think to about 1960cc? You can throw a 3t crank into them and make it something like 2.2 (don't quote me, i'm an rg man) Or do a 3tg bottom end with a 2tg head, or 3tg head. Big valves pistons blah blah blah. wouldn't be too hard to get 200rwhp from a properly built 18rg but you'd probably have to bore and stroke to 2.4.

Either way, it'll chew up your 3-4k pretty quickly by the time you get pistons valves and cams, let alone any machine work and gaskets.

Alternatively 3sge beams would be nice to see in it.

bEn

**river** · 07-09-2010, 08:33 AM

Hi,

With boring and stroking you can get the 2T out to nearly 2litres.

With boring and stroking you can get the 18R out to 2.4litres

You should be able to get about 200hp out of the 2T-G with some monster cams and other head work. They were getting around 200hp out of the 2T engine back in the 80s for racing, so the 2T-G should not have any issues getting the same power.

Not sure what you could pull out of a similarly worked 18R-G, but having 20% more displacement than the 2T-G, one would expect it to output more power.

The 3T engine will bolt up as per 2T engine.

Maybe the best solution is to check the various classes and get a feel for the power and performance of the classes. You may stand a better chance to win your class by staying NA with the 2T-G engine.

Might be easier to throw a turbo on the 2T-G engine, rather than go the 3T-GTE route. It depends on the classes and the field of competitors that you wish to race against.

seeyuzz
river

**RA23GT** · 07-09-2010, 11:48 AM

As much as I am a 18RG man I would look at a 3SGE, dollar for dollar will give more horses. Sounds like you will have to look at options to mate to your driveline anyway so may as well look at other options. If you are after a small package then a 4AGE is tiny and mods even better (very popular with the clubman crowd).

**The Witzl** · 07-09-2010, 01:05 PM

and 18RG wont bolt up to your existing gearbox, so if you dont want to mess around with gearboxes you will need to stick to 2TG or 3TGTE.... but i am aware that 2T/3T share the same bellhousing pattern as a 1GGTE, so maybe that is also an option?

If you are willing to modify the gearbox to bolt to a new engine, then i would follow the advice given already and look at the 3SGE option, or maybe even a 2ZZ-GE if you need to keep capacity below 2L.

**M.J.H** · 07-09-2010, 03:15 PM

Thanks for that.
The classes are 0-1300cc 1301-1600cc and 1601-2000cc if I remember correcttly.

both the 1301-1600 and the 16011 to 2000cc are very hotly contested with plenty of cars in each class.

Looks like I will just have to find a 3T bottom end to go with the spare 2TG head and motor that comes with the car.

Thanks all for the info, I'm off to do a lot of research intro the TG motors now by the sounds of it.

**river** · 07-09-2010, 04:39 PM

Hi,

The 2T-G is a wonderful engine and takes well to tuning and mods.

The big question is... do you keep it in the 1301-1600 class, or increase the capacity and move into the 1601-2000 class?

You may do better with a highly worked 4AGE engine to stay in the 1301-1600 class.

The 2T-G lends itself more easily to be bored & stroked, and use that option if you want to move into the 1601-2000 class.

seeyuzz
river