Originally Posted by JK21 (Post 1588816)

Hi guys. Sorry I have been really busy with work and prepping for TX2K. Alright so here is the update. I will upload pictures and sound clips when I get home as I am at work right now.


1) I was going the 2jz route but I switched it up to just buildings and sleeving the motor (Darton Sleeves) and I am going with a custom fabbed kit by my shop JMS Racing. I am going with a PTE 6466 turbo setup. (2200s for the injector size but due to time constraints I will be running 1300s when I go to College station & Houston.) I have a custom fabbed 3" full aluminum exhaust.


2) I am competing in the roll race to see how the car will do ( I was called out by a 700hp Ariel Atom, and a few of my GTR buddies want to run me as well). I am the only FRS in the roll racing and I am looking forward to how the car does and the street runs in Houston will be live.


3) Street testing will commence tomorrow. I will post results and vids here once it is said and done. Will keep posted.

Originally Posted by JK21 (Post 1044597)

I could do the LS swap but I feel that is overdone and I am staying with the import side. Plus the bay is not nearly as cramped with a 2jz vs. a LS motor. Plus that throws off the weight distribution soooo much. And i still like my turns haha

Originally Posted by drifter93 (Post 3204651)

That's just my opinion and you are welcome to correct me if i'm somewhere wrong.

Originally Posted by drifter93 (Post 3204651)

That's just my opinion and you are welcome to correct me if i'm somewhere wrong.

Originally Posted by DarkPira7e (Post 3204653)

Don't forget that balance isn't just a measurement of weight. You're significantly raising the COG of the engine when you do this. Nice first post though!

Originally Posted by drifter93 (Post 3204931)

Thanks a lot DarkPira7e! It was research of countless of hours through the forums. Through that research, i found something interesting though. The center of mass/gravity, doesn't change significantly. Because of these reasons:
1) 2JZ has iron block and aluminium head. So comparing it with a full iron longblock, it has a lower COG
2) Due to the fact that the 2jz barely fits to the gt86 for the hood to actually close, the custom mounts are made in that way that when the engine is installed, it sits lower compared to the stock fa20.

Originally Posted by drifter93 (Post 3204651)

About the tranny. Why go with the rare and expensive v160, when there is the tremec t56 magnum? It only gives you 20lbs of more weight compared to the stock tranny and it doesn't make a difference where the weight is added. Also don't forget that those 20lbs could be easily shaved from lightweight rotors, lightweight rims, coilovers and from exhaust.
.

Originally Posted by Irace86.2.0 (Post 3205202)

The FA20 has a flat/short long block. The original intake manifold was plastic. The heaviest items above the long block is the AC condenser, the alternator and the throttle body.

On the other hand, the 2jz's short block is taller than the flat FA20 long block. Then there is the aluminum heads, the cast iron exhaust manifold and iron hot sides of the turbos, along with the aluminum intake manifold, aluminum cold side of the turbos, throttle body, etc. A single turbo kit could improve weight or add too it. Regardless, the weight is relatively high being mostly inline with the heads.

Here is a pic dump for some visual references. The weight/size of an iron block, an aluminum intake manifold, of two extra cylinders and a turbo system won't be minor or inconsequential. I have a Harrop supercharger kit, which may add an extra 60lbs and raise the COG only a little, yet even with a light weight battery, I can easily/obviously feel that extra weight in the front and can feel the weight transfer in turns. No way the 2JZ won't be a huge difference in feel. There is just no way.

FA20 is so low. The long block is below the headlights
http://vorshlag.smugmug.com/Projects..._DSC3048-L.jpg

The long block is sitting at the bottom of the fuse box and sits far from the front/lower beam.
https://i.imgur.com/TvcMEoH.jpg

Size difference?
http://www.tweakdperformance.com/hosting/frs/swap8.jpg

Geez that stock 2jz just barely fits. Is it hitting that front beam?
https://i.ytimg.com/vi/KjH35Ul1XCM/maxresdefault.jpg

The height is at the top of the fuse box, and is that a cut front beam?
https://i.imgur.com/Wq3C7q6.jpg

I guess you don't have to cut the front beam. The crank pulley will just hang over it.
https://engineswapdepot.com/wp-conte...h-a-2JZ-03.jpg

These big turbos sit high, no? Kinda above the fuse box.
https://i.imgur.com/Qrtubrf.jpg

Originally Posted by Sportsguy83 (Post 3205252)

86 transmission weights 86 lbs.

T56 weights around 185 lbs. (Source, I got sent a T56 when I had originally purchased a TR6060 for my swap and I had to weight it in order to ship it back).

It's not a bad weight penalty, as it's weight literally under the middle of the car which helps lower the COG, but it's definitely not a 20 lbs penalty, more like 100.

Originally Posted by Sportsguy83 (Post 3205252)

86 transmission weights 86 lbs.

T56 weights around 185 lbs. (Source, I got sent a T56 when I had originally purchased a TR6060 for my swap and I had to weight it in order to ship it back).

It's not a bad weight penalty, as it's weight literally under the middle of the car which helps lower the COG, but it's definitely not a 20 lbs penalty, more like 100.

Originally Posted by Irace86.2.0 (Post 3205313)

It would be under the horizontal (transverse) midline of the car, or mostly around crank height and lower, which is good, but definitely in front of the vertical (frontal/coronal) midline, which would put the car more front biased, even further away from the stock 53/47.

Always good to add this link:
https://www.ft86club.com/forums/showthread.php?t=2131

Originally Posted by drifter93 (Post 3204651)

Guys, i know that's a really old thread, but i feel like it's a good thing to correct the myth/hype about the "2JZ is iron block, it's heavy compared to an aluminium block, so why would i ruin my balance?"

Google is your friend:

The 2JZ weighs around 500lb while the FA20 weighs 379 lb. Each motor was weighed with intake/exhaust manifolds, turbos, dumps, and all accessories except AC.

If you search at supra forums, the 2jz longblock itshelf weighs somewhere around 430lbs, and that's without the intercooler, radiator, two turbos, intake and exhaust manifold, but with the alternator and a lightweight flywheel and clutch.

Actually we are talking for a 50 pound weight difference. Of course you won't be keeping the twin turbo setup, and convert it to a single turbo. A single turbo plus a cast single turbo manifold, and the stock intake manifold already shaves you some pounds and weigh about 50 pounds. Those who are supercharging their fa20 are already adding 30lbs + of additional weight.

About the tranny. Why go with the rare and expensive v160, when there is the tremec t56 magnum? It only gives you 20lbs of more weight compared to the stock tranny and it doesn't make a difference where the weight is added. Also don't forget that those 20lbs could be easily shaved from lightweight rotors, lightweight rims, coilovers and from exhaust.

So in conclusion: 2jz turbo vs fa20 supercharged: 50+50-30= 70lbs of weight difference.

With some nice coilovers (ohlins, kw v3) you can full scale and corner balance your little rocket and that's what makes a real difference. You may as well focus to your left - right, cross weight balance, instead of the front - rear. Front - rear is for marketing purposes. Left to right and cross is what makes the huge impact to the handling.

That's just my opinion and you are welcome to correct me if i'm somewhere wrong.