The 383 RX8...Youtube video's 500hp/tq
#1
The 383 RX8...Youtube video's 500hp/tq
Like it says...a couple video's...anyways the car is still for sale if anyone is interested...but just so everyone knows it has a 383 that's fully built. The block is Iron...yes I know but everything else is aluminum so engine weight isn't that big of a difference between the lsx and my 383.
Anyways the tires are Nitto 295/45's......YES I got that big of a tire on there. Had to actually lift the car to fit it. But it's the only way you can really use the power this motor has.
First video......
http://www.youtube.com/watch?v=VW8R9CP2pOo
I spin first and second and all I do is shift to third...didn't accelerate or anything.
Video two is just more less a burn out and a turn around but you get to hear it decently idle and everything.
http://www.youtube.com/watch?v=nIyQ77QFzDA
and of course here is the idle and rev sitting still
http://www.youtube.com/watch?v=_5t_VyAelMs
Anyways the tires are Nitto 295/45's......YES I got that big of a tire on there. Had to actually lift the car to fit it. But it's the only way you can really use the power this motor has.
First video......
http://www.youtube.com/watch?v=VW8R9CP2pOo
I spin first and second and all I do is shift to third...didn't accelerate or anything.
Video two is just more less a burn out and a turn around but you get to hear it decently idle and everything.
http://www.youtube.com/watch?v=nIyQ77QFzDA
and of course here is the idle and rev sitting still
http://www.youtube.com/watch?v=_5t_VyAelMs
Last edited by outinnowhere3193; 09-12-2010 at 09:48 PM.
#6
I divide by zero
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I still say your guessed HP/TQ is very very optimistic. While a 383 CAN make 500hp it takes a HUGE cam(yours isnt), expensive CNC heads(yours arent), a quality set of longtubes(heh) and full 3" exhaust. The bigs boys making over 500hp have $8-10k under the hood. Even well built moderate budget 383 setups are usually just over 400hp. I'd love to see you put this on a dyno and prove me wrong, but I bet you would be very suprised with the results.
The turbo on my Rx8 was 'capable' of making 400rwhp. But I didnt go around saying "400hp Rx8"!
The turbo on my Rx8 was 'capable' of making 400rwhp. But I didnt go around saying "400hp Rx8"!
#8
I still say your guessed HP/TQ is very very optimistic. While a 383 CAN make 500hp it takes a HUGE cam(yours isnt), expensive CNC heads(yours arent), a quality set of longtubes(heh) and full 3" exhaust. The bigs boys making over 500hp have $8-10k under the hood. Even well built moderate budget 383 setups are usually just over 400hp. I'd love to see you put this on a dyno and prove me wrong, but I bet you would be very suprised with the results.
The turbo on my Rx8 was 'capable' of making 400rwhp. But I didnt go around saying "400hp Rx8"!
The turbo on my Rx8 was 'capable' of making 400rwhp. But I didnt go around saying "400hp Rx8"!
As far as the work I have done...all my parts are name brand and are top of the line... As far as cost in the engine not sure what my total dollar is. But I do know my heads and cam together is about 2500 alone. In the whole build not including the tires and rims I have 8 or 9k in it easy. IDK I have receipts I could easily add it up for ya. But anyways I know what I had running turbo as well and the tires I had on the car was decent and they grabbed decently...with this motor there wasn't any traction.
When I was boosting... I dyno'd at 306 whp at 8psi. later on I started tuning and was boosting at 15psi I never knew what my total output was but I do know there was a huge difference between 8 and 15 so I always assumed I was around the 400whp.
Actually anyone know what Cam at pettit racing's supercharged hp is? I could pull it and leave it sitting without a problem.
Anyways I know it's a hell of a lot faster with this motor then when I was turbo'd
and as far as why not run a smaller rim with a tall tire?
Slicks?
Small rim and taller tire you end up say a 15 that's taller would match the 18's stock low profile. Now saying that you end up with the same traction which isn't near enough.
Only way to get traction without going taller would be to go wide and I went wider but I didn't want the tires sticking way out
#10
I'm surprised, I like it. No, it's not the same as an '8 with a rotary, but it still has its own appeal. I guess the only thing that makes my blood boil more than a boosted 13B at full song is a cammed V8. One thing it's got that no rotary's got is torque, torque, torque, especially if it's a stroker. Nice job, there's somebody out there who's got a nut for this.
Don't let the haters get you down.
Don't let the haters get you down.
#11
^^^ I dont know about you, but I wouldnt be so sure about rotaries not having torque torque torque. this looks good to me. Nothing compared to a v8 ( with work done ofcourse) but certainly enough to make you jeeze in your pants
http://www.youtube.com/watch?v=b7ozT...layer_embedded
And theres a 1st gen with 1002 HP around. Im guessing that has plenty of torque too
http://www.youtube.com/watch?v=b7ozT...layer_embedded
And theres a 1st gen with 1002 HP around. Im guessing that has plenty of torque too
Last edited by angeljoelv; 09-13-2010 at 07:18 PM.
#12
Well, 3 rotors, yeah, that helps. I was still thinking 13B, even with FI, struggles to keep up with a stroked V8 - the e-shaft to rotor face length is limited and the peritrochoidal motion (I love that word) doesnt' have the same energy transfer as a straight con rod. But I agree with your point, 20Bs and 4 rotors definitely cna be a match for a V8; last I checked, it would take a stroked, cammed 454 to match the 3 rotor in your video.
#13
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As far as the work I have done...all my parts are name brand and are top of the line... As far as cost in the engine not sure what my total dollar is. But I do know my heads and cam together is about 2500 alone. In the whole build not including the tires and rims I have 8 or 9k in it easy. IDK I have receipts I could easily add it up for ya. But anyways I know what I had running turbo as well and the tires I had on the car was decent and they grabbed decently...with this motor there wasn't any traction.
Even if you are only making 400hp its gonna pull alot harder than a 400hp turboed Renesis because you have more power at 2k rpm than it will make at 6k. The beauty of a V8
#14
I still say respect. I'd bet that stroker is a hell of a lot easier to tune than my car
That being said, the rotary disease is still in my blood, and I don't see an antidote any time soon.
That being said, the rotary disease is still in my blood, and I don't see an antidote any time soon.
#15
As far as cams I'm not going to argue about any of it. I had help putting the pieces together. As far as RHS vs AFR my flow rates are a lot higher then the AFR 190's I have like .650 in lift on my valves....it's actually like .64 something but close enough to .650 which was the max lift for those heads.
Yes it's going to feel different cause I have power from the get go...and the rotary was fun...don't get me wrong...but lets see no power till your turbo spools and then it's still not the as good as the v8.
I like to play slide a corner here and there..and with the V8 I just stomp on the gas and let the motor throw me sideways....the turbo was like hit the throttle then turn the wheel hoping that the turbo spooled just right and it kicked sideways just right.
Of course when I was turbo'd it took a bit to spool mine but when it did it was there. So I'd go from stock power to pressed in the seat or smoking the tires. It was a great feeling hearing the turbo and feeling it with the rotary. But for play matters if you wasn't already in high rpm's where the turbo would spool almost right away it wasn't idea for me.
Nothing sucks more then someone pulling up beside ya and wanting to run ya and you both shift down and hit it and he pulls you and you lose cause by the time your turbo spooled it was just enough for you to lose.
Personally I don't think you can go wrong with the V8...
Oh and the video isn't a stock motor either...it's fully built with a turbo. That's a 20k plus motor in that car.... Hell if I had 20k to drop in I'd have a 505 supercharged in my car doing insanely stupid numbers.
But lets look at this...V8 running off pump gas with nothing to go wrong. Just drive the damn thing...no let it warm up...or watching your oil, or coils going out...The rotary is very costly and takes a lot of care that's why I went with the V8...build it, drop it in and drive the HELL outta it.
#17
Registered
I am guessing 380 RWHP at 15PSI with a WAY too lean tune and methanol/ntromethane injection.
(RIP @ 15 to 1 A/F ratio 10K RPM)
Now I am around 300 RWHP with low compression rotors and a tune that would (probably) run 87 octane at 10 PSI....
#18
It's a Cavalier
Hey thanks for posting the videos!
I was wondering about the gearing... what mph do you get redlining in 1st gear?
Is the transmission a T56? what's it out of? have you change the diff gearing?
How do you feel the rest of the stock drivetrain bits are taking the power? Any problems yet?
I was wondering about the gearing... what mph do you get redlining in 1st gear?
Is the transmission a T56? what's it out of? have you change the diff gearing?
How do you feel the rest of the stock drivetrain bits are taking the power? Any problems yet?
#19
Hey thanks for posting the videos!
I was wondering about the gearing... what mph do you get redlining in 1st gear?
Is the transmission a T56? what's it out of? have you change the diff gearing?
How do you feel the rest of the stock drivetrain bits are taking the power? Any problems yet?
I was wondering about the gearing... what mph do you get redlining in 1st gear?
Is the transmission a T56? what's it out of? have you change the diff gearing?
How do you feel the rest of the stock drivetrain bits are taking the power? Any problems yet?
But according to a calculator my speed in first at 6000rpm would be 50mph...My motor should climb 6500 but of course I try not to push it that hard.
Which explains why I have to drive 50 in 5th and can't use 6th....lol
2000rpm drives me at 87 mph....which give me a top end speed of 261 mph at 6000rpm....
When I built this I did it all like this on purpose. Still have the low end power to play and have great take offs...but yet the perfect final gears that would get me gas mileage.
In 5th gear 60mph is at about 2050rpm or 2100 somewhere in that neighborhood.
I can drive 60 in 6th but you can tell the rpm's are rather low and that the engine on hills and such struggles but straight road she just floats the 60 mph in 6th without any problems.
I guess 5th is a highway gear and 6th is my interstate gear
I love the gearing.
Top speed at 6000rpm
First 50mph
Second 73mph
Third 100mph
Forth 130mph
Fifth 176mph
Six 261mph
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