Power to weight Ratios...please share!!

[LsBeema 418]

That's with me in it....and about 25-30ltrs of gas.

So..1350kgs

300kw

550nm....will calculate soon

[Jacko 2078]

I have a toy plane, its 1.3kg and has 8.4kW. 

 

I win. 

[Cammsport 382]

E30 coupe M52B28

0.175 hp/kg

0.1304 kW/kg

😅

[E30 325i Rag-Top 2915]

E30 race car, assuming I ever get it finished and back on the track.

Aiming to get the  car down to the 2ltr class minimum weight limit of 1,040kg including driver.

Engine is rated at 190bhp standard which is probably about where it sits currently -lost a few geegees over time v gained a few with mods. 
More than enough for me!

[polley 916]

How stripped is a e30 to be at 1040kg? Is that with an m20b20 ?

[Driftit 1945]

29 minutes ago, polley said:

How stripped is a e30 to be at 1040kg? Is that with an m20b20 ?

At the end of a race the 320's had to weigh over 1175kgs and the 318s 1075kgs.
I ran a 320.  Weighed about 100kgs.  And had around 30kgs of lead placed around the car for balancing.  Sometimes more.

Car was a full body 4 door PFL.  No light weight parts as they are not allowed.  Stripped interior.  No sound deadening.  That is really it.
Jons car has/will have a S14B20.  Or did you go bigger?

Wifes 200SX is 1200kgs and 270rwkw @ 500nmish
My E55 is 1800kgs and 320rwkw @ 700nm

Edited November 8, 2022 by Driftit

[gjm 3193]

My old (UK) 1984 E30 with the M10 turbo was tuned back to 435whp for the road, and weighed just under 1000kg.

I'm proud to say I drove it every day (in part, a reason for the detune) for over 6 months. Without a rebuild.  (If we can exclude clutches....)

 

Edit: the 1984 318 E30 was quoted as being 1030kg ex-factory.

Edited November 8, 2022 by gjm

[E30 325i Rag-Top 2915]

31 minutes ago, polley said:

How stripped is a e30 to be at 1040kg? Is that with an m20b20 ?

Very is the answer. Last time I raced I was weighed at 1085kg, with me around 90kg, making car just under the tonne. That was with fibreglass bonnet, guards and bumpers. Plastic windows, gutted door shells, etc.

Have pulled lots of wiring out, cut off lots of studs and brackets, drilled lots of holes in anything non-structural. Will be interesting how light I can get, especially in the front for better balance.

As Dan said it’s the four pot S14B20 motor so good weight saving over the M20. 

[Zadkiel 41]

Does it have to be BMW?

[Sammo 2477]

21 hours ago, E30 325i Rag-Top said:

Very is the answer. Last time I raced I was weighed at 1085kg, with me around 90kg, making car just under the tonne. That was with fibreglass bonnet, guards and bumpers. Plastic windows, gutted door shells, etc.

Have pulled lots of wiring out, cut off lots of studs and brackets, drilled lots of holes in anything non-structural. Will be interesting how light I can get, especially in the front for better balance.

As Dan said it’s the four pot S14B20 motor so good weight saving over the M20. 

Whats a stock 325i without driver? 1250kg?

[gjm 3193]

42 minutes ago, Sammo said:

Whats a stock 325i without driver? 1250kg?

Quoted as 1180kg. I suspect not too many fluids were involved in the weighing.

[Eagle 1519]

Sounds about right. According to E30 owners manual 

1275kg - 2 door - 325is - 1290kg 

1290kg - 4 door

1355kg - Vert

Ready to go with full tank of fuel and fluids, assuming no driver.

Edited November 9, 2022 by Eagle

[LsBeema 418]

Sooo...body style,model, cyl, cc, hp, maxrpm, weight, hp/kg, 0-100, max kph......

 

Coupes/GTBMW M3 (E30) 4/2302 220/6750 1257kg 178 6.7  144

Big Saloon BMW M5 (E28) 6/3453  286/6500 1431kg 203 6.2 151

Coupes/GT BMW M3 (E36) 6/3201 321/7400 1515kg 215 5.4  157

Sports Car BMW M Roadster 6/3246 325/7400 1450kg 228 5.3 155

Coupes/GTBMW M3 (E46) 6/3246 338/7900 1570kg 219 5.1 155

Coupes/GT BMW Z4 M Coupe 6/3246 338/7900 1424kg 241 5 155

Big Saloon BMW M5 (E34) 6/3795 340/6900 1653kg 209 5.9  155

Coupes/GT BMW M3 CSL (E46) 6/3246 355/7900 1385kg 255 5.3  155

SupercarPorsche 911 GT3 RS (996) 6/3600 375/7400 1330kg 286 4.2 190

Big Saloon BMW M5 (E39) 8/4941 400/6600 1720kg 236 4.9155

Coupes/GTBMW M3 (E92) 8/3999 414/8300 1655kg 254 4.7 155

Coupes/GTNissan GT-R 6/3799 473/6400 1740kg 276 3.81 93

Big SaloonBMW M5 (E60) 10/4999 500/7750 1830kg 278 4.7 155

Lightweight Coupe BMW E36 CSL(aka) LsBeema 8/6000 400/6250 1350 296 soon soon

Edited November 11, 2022 by LsBeema