I was thinking about doing a swap and couldn't find any performance data related to the swap.

I was curious of the weight and and handling changes.

Also I would be curious to the 0-60 and 1/4 times.

This of course would be leaving the motor stock with the factory ECU.

 

stock Tii in a FB, numbers I would think would be close to a stock Tii in a FC. I would guess 6.5 seconds and 14.5 seconds

mine weights around 2700 and did a 13.1 @ 106mph before

 

most people don't do a totally stock swap, they usually use bigger turbos, etc etc...

but if you want to do some back of the envelope type calculations, we can do that.

lets assume, you install the complete T2 engine, in factory trim, and transmission, minus the precat, we'll assume a down pipe.

the turbo engine, will add about ~80lbs, the turbo itself, and manifold have to be about 40, the trans adds about 15, the FC engine has a lot of "stuff" like coils, so there is probably 10lbs there.

so if you started with an 81-83 car, which is ~2330lbs stock, you'd be around 2420lbs, a GSL-SE is heavier, so you would end up around 2650 or so.

the other side of the coin is power, and in a 12A car, it basically doubles, 100hp to 180/200 depending on the series. torque also doubles.

power to weight goes from about 23lbs/hp to about 13, which is like a stock Rx8, add a couple of minor mods, like exhaust, and you're in the 220hp area, which is nipping on FD power to weight....

 

Doesn't some of the SE's extra weight come from the additional 20mm of engine and the massive intake manifold? Some of it comes from the beefier running gear, sure, but the majority of it, I would guess, comes from the engine bay. So that means, all else being equal, the weight of a swapped 12A car and a swapped SE would be closer together than you calculate as long as the same engine ends up in the bay.

 

Thanks for that info. It gives me a pretty clear picture

I will be using a GSLSE.

 

All you really need to know is you would never have had as much fun fully clothed. Fact.

 

i've never had an 84-85 12A car on the scales.

the 79, 100% stock, was 2420lbs
the 83, again 100% stock, was 2330lbs, remember the 81+ has Aluminum bumpers vs steel, and no thermal reactor...
the GSL-SE was 2540lbs.

i wouldn't be surprised if the 84-85 12A was 2400, or maybe 2450lbs.

i always weigh with a full tank of gas, as it is repeatable

 

Right. All I'm saying is that much of the SE's weight difference compared to the ('84-'85, at least) 12A cars' goes away once you remove the engine. Take that out and the only differences are what? Larger brake rotors and a slightly beefier rear axle? That can't account for more than 20-30 lbs, tops.

My point is that a TII swapped SE's power-to-weight ratio is likely to be very similar to a TII swapped 12A car's.

But this is all, as you say, back of the envelope-type engineering.

 

I weighed my 12a car (1985 GS) with full interior, myself 170lbs, some extra parts like bigger sways/roll bar/strut brace/RB exhaust, stuff in the bins, and full tank of 16 gallons fuel

2660lbs

 

My base model with spare and a/c removed and 1/4 tank of gas weighed in at exactly 2300 lbs without me in it. This is with a bigger sway bar up front, no sway in the rear, SE axle, SE front spindles, RB header and exhaust, Weber side draft, and 16x7 Volk TE-37s.

fm

 

The whole reason I made this video was to answer your very same question:


It TRULY IS the most fun I've ever had with my clothes on...in a car...by myself