JGTC SW20 MR2

[GDII]

http://trd2000gt.forumotion.com/t123-gt ... nal-photos

This is an interesting look inside one for the SW20 JGTC GT300 cars. One thing that stands out to me is the engine head configuration. The 503e engine (3SGTE based race engine) has the intake and exhaust as per the standard 3SGTE but the one in this car has the exhaust coming out the back with the turbo sitting in the boot and the intake pipe coming from the left rear quarter panel. Looks to have a front mount intercooler too. The intake manifold is on the front firewall instead.

There isn't much left of the MR2 chassis around the front and rear suspension but that makes sense as the wheels are way bigger and the car is way lower than what you can do with a normal road car.

[Malcolm]

Pity there's not better shots of the engine. I don't think it would be a 503e anyway, probably just an extensively modified 3SGTE, as per the Supras of the same era. I also don't think the 503e is 3SGTE based, but that's a different story. Just thinking about it, I think it would probably be possible to reverse the head on a 3SGTE with a bit of work. There are some oil feeds and drains you'd need to redo (probably just make external ones), but I think running the camshafts out the other end of the head would work, and you'd have some issues to sort out with tensioner but probably nothing insurmountable

[GDII]

Yeah the 503e and 3SGTE engines are similar but maybe not based on each other. The cam cover is very similar to the GEN3 but missing the oil filler raised area due to dry sump. I guess this is just a similar design feature of the cover rather than it being based on the 3SGTE.

EDIT: Looking at the 503e in more detail, not the same engine as the 3SGTE. 2.1 litre, very interesting external water pipes on the head, quite different setup. Just happens to be a 4 cylinder engine like the 3SGTE.
Yeah that's not the same engine at all. https://www.mr2australia.com/mr2play/tm ... 2&mpage=10

The reversed the head on the BTCC Corolla 3SGE so not hard to do when you can modify the engine so much.

The intercooler pipes for the cool side are massive running dow the passenger side of the fuel tank.

Here is a SARD 3SGTE in a standard SW20.

[Malcolm]

That engine in the sw20 looks like a 503e to me, the rocker cover is identical to ones I've seen installed in a few other cars. I have a bunch of photos somewhere on my photobucket. Will see if I can find them

[Malcolm]

To clarify, I meant the engine in the standard SW20 looks like a 503e. Here's some of my stash of photos of the same engine

[GDII]

That engine in the sw20 looks like a 503e to me, the rocker cover is identical to ones I've seen installed in a few other cars. I have a bunch of photos somewhere on my photobucket. Will see if I can find them

Nice collection of photos.

You are right. It has the water pipe above the exhaust manifold like the 503e has so it is one. But the one in the SW20 JGTC car has the head rotated.

There looks to be a few versions for different cars. Mid engines used the one with the brace on it like the Atlantic/Pacific 4AGE and the ones for the MR2 and Supra JGTC cars. That MR2 still has me confused to why the head is rotated but why not when it makes sense with the chassis of the car. Front mount intercooler and plenty of space for a well designed manifold and big turbo in the boot. Like I said the BTCC Corolla had a flipped head for the 3SGE so when the car was running as speed it would produce boost from the air forced into the front grille directly down the throttles.

So who wants a a 2,140cc 1000hp 4 cylinder SW20 running 63.8psi? Mmmmm water cooled dual wastegates!

[ClanFever]

I wonder what it'd be like to drive before the down force kicks in...