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Power to weight ratio?

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Old 03-30-2009, 04:41 PM
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Power to weight ratio?

For a naturally aspirated motor, I think it's quite possible that the actual RX8 motor itself has the best power to weight ratio of any production car...ever. It might not be true, but at least it's gotta be close. I just thought of this and realized how awesome that is.
Old 03-30-2009, 04:42 PM
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Originally Posted by renesisgenesis
For a naturally aspirated motor, I think it's quite possible that the actual RX8 motor itself has the best power to weight ratio of any production car...ever. It might not be true, but at least it's gotta be close. I just thought of this and realized how awesome that is.
It definitely puts out a good punch for it's weight, that's for sure!
Old 03-30-2009, 04:45 PM
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Well the S2000 is probably up there too.
Old 03-30-2009, 04:56 PM
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rx8 232hp at 267 lbs(fully dressed minus airbox)
s2000 240hp 326lbs(not sure if thats dressed or not)

either way rx8 wins...
Old 03-30-2009, 05:13 PM
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You have to kidding!!!!!!!!!

It's not even close to best NA power to weight for a production engine.

Just one example... a run-of-the-mill aluminum block Chevy 6.2L LS3 V8 with it's "ancient" ohv technology has 430hp and weighs 415 lbs fully dressed. That's the engine in the base level Corvette, the Pontiac G8 GXP, and the Camaro SS.
Old 03-30-2009, 05:16 PM
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stop trying to ruin my fun. can't you just lie to me and tell me it's gunna be ok
Old 03-30-2009, 05:19 PM
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Originally Posted by renesisgenesis
stop trying to ruin my fun. can't you just lie to me and tell me it's gunna be ok
HAHAHAH okay, my bad. Disregard my comment... continue fun.
Old 03-30-2009, 07:15 PM
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Originally Posted by renesisgenesis
stop trying to ruin my fun. can't you just lie to me and tell me it's gunna be ok
Put a turbo on the renesis and you'll have the 6.2 LS3 well beat in power to weight ratio. The fun is back.
Old 03-30-2009, 07:40 PM
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/\ heh - good thinking . Although evos can put out 700 hp with major mods - end party ...
Old 03-30-2009, 07:41 PM
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It's not even the best power to weight N/A rotary engine in a road going vehicle - Norton takes that one!

And OS makes a 1.27hp version that weighs under 12oz dressed, so I'd imagine that takes the overall power/weight ratio for an N/A rotary to boot, given it can run on nitro from the outset and make 2.2bhp.

Last edited by PhillipM; 03-30-2009 at 07:58 PM.
Old 03-30-2009, 07:45 PM
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i like cake
Old 03-30-2009, 07:49 PM
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and pie
Old 03-30-2009, 07:51 PM
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V8 ftmfw , *gets shot*
Old 03-30-2009, 08:01 PM
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What are the specs for the 20b? I seem to recall one a N/A rx7 racing car (best motoring) with 450hp. Another point for rotaries?
Old 03-30-2009, 09:47 PM
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Originally Posted by Roaddemon
Put a turbo on the renesis and you'll have the 6.2 LS3 well beat in power to weight ratio. The fun is back.
Originally Posted by Brettus
/\ heh - good thinking . Although evos can put out 700 hp with major mods - end party ...
Originally Posted by hyperlitenerd
What are the specs for the 20b? I seem to recall one a N/A rx7 racing car (best motoring) with 450hp. Another point for rotaries?
Focus.

To have a meaningful discussion here, the engine must be

A) Production (completely stock, no mods, and produced in mass quantities)

B) Normally aspirated (no turbo. no nitrous. no supercharger, no turbonator, no hair dryers)

Not sure where a turbo renesis, or a turbo modded evo, or even a 20b racing engine has anything to do with comparing other STOCK PRODUCTION NA engines.

Simple answer? Renesis is not the best hp/weight production engine. Not saying it sucks, because I love the Renny... it's just it's not that great if you measure it ONLY by that standard.
Old 03-30-2009, 10:08 PM
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/\ how about if you said highest hp for the "size" of the engine . After all the real advantage of the rotary is being able to shoehorn it in where no other engine could go ....
Old 03-30-2009, 10:13 PM
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I thought you guys meant Power to weight ratio of cars, if it is, for the rx-8 I think it's 13lbs per HP.
S2000 is somewhere in the 12's IIRC
Old 03-30-2009, 10:13 PM
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The LS series will (mostly) fit in a RX7 and RX8 with minimal weight gain (in some cases loss)

The Z06 has a power:weight of just over 6. the stock RX8 is nowhere close. Nowhere.
Old 03-30-2009, 10:35 PM
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Originally Posted by carbonRX8
The LS series will (mostly) fit in a RX7 and RX8 with minimal weight gain (in some cases loss)

The Z06 has a power:weight of just over 6. the stock RX8 is nowhere close. Nowhere.

Read my comment
Old 03-30-2009, 10:37 PM
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I'd say for the amount of horsepower our cars actually deliver to the wheels we move pretty good. But that's all. lol
Old 03-30-2009, 10:40 PM
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Originally Posted by shazy
Read my comment
You posted while I was writing.

What. Do you want an award?


Old 03-30-2009, 11:32 PM
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Originally Posted by Brettus
/\ how about if you said highest hp for the "size" of the engine . After all the real advantage of the rotary is being able to shoehorn it in where no other engine could go ....
Aw come on man! You're not gonna let me "WIN" just one thread on this whole damn forum?!?! Just one! All I ask!
Old 03-30-2009, 11:44 PM
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I was really curious on what the stock 20b put out?
Old 03-31-2009, 12:18 AM
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Originally Posted by hyperlitenerd
I was really curious on what the stock 20b put out?
exhaust.



Search.




Read.
Old 03-31-2009, 01:40 AM
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Well the 20B has got twin sequential turbos.

Would be nice if they came up with the 16X and said, hey, we also made this 24X :P


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