Nissan 240SX Forums banner
Cancel
Create thread New Garage Forums

The killing of a 310 HP Evo 8

Jump to Latest
21 - 40 of 45 Posts
#21 · (Edited)
esco said:
When I said low 200's I never meant 200hp. When I said near 250hp, i never said 250. Also if you read up on evo projects and dyno's sheets of stock evo's on the same type of dyno they'll vary greatly! Read scc's project evo and various other projects and you'll see evo's that dyno from the low 200's(217ish) to near 250(240ish) bone stock cars. I never said varied from exactly 200hp-250! i'm thinking more of a 30hp(rare) difference at the most. Let me estimate more accurately to make it easier to comprehend to you 219-240hp, like i said carb evo's vs non carb evo's vary greatly!

Booyah! my earlier high octane and emissions theory supported even before I viewed it:

"AS TESTED:

FUEL - 94 OCTANE UNLEADED (NO OCTANE BOOSTERS OR RACEGAS)"

take that vs a 91oct carb packaged cali evo and it all makes sense :supercool
Click to expand...
Heh, that took you a really long time to post esco. I dont believe you on the high dyno's. The sti's are dynoing at 218 and they have round 300hp at the crank. wrx sti 218whp divided by 300crank hp = 72 percent of the power making it to the wheels. mitsu evo 200whp divided by 276 crank hp = 72 percent of the power making it to the wheels. I think the variences we are seeing are the different values in hp per dyno meter. I think I will do some research to find out what the values are per dyno meter, and since dyno jet is the most popular I will do my research with dyno jet as the control group.
 
Save
Reply Quote Like Like
#22 · (Edited)
14.5 drift said:
Heh, that took you a really long time to post esco. I dont believe you on the high dyno's. The sti's are dynoing at 218 and they have round 300hp at the crank. wrx sti 218whp divided by 300crank hp = 72 percent of the power making it to the wheels. mitsu evo 200whp divided by 276 crank hp = 72 percent of the power making it to the wheels. I think the variences we are seeing are the different values in hp per dyno meter. I think I will do some research to find out what the values are per dyno chart, and since dyno jet is the most popular I will do my search with dyno jet as the control.
Click to expand...
your taking the hp-drivetrain loss calculation in a literal and exact way and thats not how it works. It's a rule of thumb and a very rough estimate. You can't just take a car and do the formula and then expect it to have that amount of power, you'll never truly or accurately know until you dyno it. Do you know what carb means? Cuz I don't see why you'd have a hard time understanding if you did. Like I said take the carb differences along with the factory variations and octane ratings(94 is roughly just under a 10hp gain vs 91) and my facts come pretty close.
 
#23 ·
I'm not searching for carb evo's. I'm searchin for all evo's. Drive train loss is not a formula but I am recognizing familiarities. You and I know that awd vehicles have very inneficient drive trains so what sounds more reasonable, A. if a evo dynoed at 240 at the wheels that it only had a 14 percent drive train loss or B. that it has a different value in measuring horsepower.
 
Save
Reply Quote Like Like
#24 ·
the evo from vishnu is a CARB EVO! This is what i've been trying to tell ya man! A non-carb evo will dyno roughly about more or less 20hp more than a carb evo! 94octane will give you around 7hp over 91.
So already a non-carb evo with 94 octane can have roughly more or less a 27hp advantage over a carb evo!
this is the devil that california evo owners see!
http://www.arb.ca.gov/homepage.htm
 
#25 ·
Says nothing about any restrictions due to carb regulations http://www.vishnutuning.com/lancer.htm unless the regulation is that we only get 91 octane. In that case the timing must be mildly retarded for the lesser octane or a simple octane booster needs to be added like vishnu did. Any how this has gone a lil off topic now. Just help me find the values of each dyno meter. I will start a couple threads in a couple diff places and see what I come up with.
 
Save
Reply Quote Like Like
#26 · (Edited)
14.5 drift said:
Says nothing about any restrictions due to carb regulations http://www.vishnutuning.com/lancer.htm unless the regulation is that we only get 91 octane. In that case the timing must be mildly retarded for the lesser octane or a simple octane booster needs to be added like vishnu did. Any how this has gone a lil off topic now. Just help me find the values of each dyno meter. I will start a couple threads in a couple diff places and see what I come up with.
Click to expand...
Vishnu Performance Systems
3687 Old Santa Rita Road #21
Pleasanton, CA 94588

CA=CALIFORNIA
CALIFORNIA=CARB
CARB= California Air Resource Board
All cars sold in CA must meet CARB regulations.

I don't intend to sound like an ass or really get on your case here. I apologize if it seems like it to you. I mean come on 14.5 drift, you usually have your facts straight and know stuff like this? I just don't wanna come off being an ass since on the internet it's hard to tell how someone is reacting behind a computer screen.
 
#27 · (Edited)
What's your point esco? They had no complaints about the carb restrictions, only that the fuel grade was inadequate. I have never heard of cars in california being under rated from the factory due to carb restrictions. They still have hummers, ferraris, corvettes, vipers and many other vehicles that are much more of a threat to california skies, so they aren't clippin 3 hp off the top of the 4 cyllies in attempt to save the planet. I think you have been missinformed esco. With all due respect I have never heard any one say " I dynoed 320 today but it is a california car soo....." I think it's just the aftermarket that is limited.
 
Save
Reply Quote Like Like
Discussion starter · #31 ·
Pic of my car? I have posted plenty of them you just gotta look but I might put some up since I got my new Digicamera. Also one last note JoJo's evo has no cat which is a big deal I have seen a 240 make 300RWHP and then take the cat off and run it again and it made 347 RWHP. If you get rid of the emissions crap on a turbo car you can make some serious power. All I can say is he has a stage one kit and then some and I saw the dyno reading also it was a 4WD dyno I will see if I can get his dyno sheet and post it...Stubby
 
#34 ·
if it was a mustang dynapack those things are heart breakers if it says you putting downing 240bhp it's really about 260bhp. The dynopacks usually give a little lower number than what you are really running especially the mustang. 310 to the wheels in a awd car is about 370 crank and thats alot of power he would have to have about every bolt on for that car and jack the boost up a little. He's even got a bigger intercooler which may help on the pressure drop and that will raise the boost along with the d/p so you could see a rise in 5 psi just from those 2 things.
 
#35 · (Edited)
Okay, after posting up at ls1.com, it breaks down like this, Mustang Dyno's are said to give a more "Real World" hp rating... i.e. What the car would actually experience on the road...Dyno Jet Dyno's read higher than the Mustang Dyno's because of how they measure the hp...Large Cylinder that spins...Rotational inertia is used to measure hp based on how quickly the car can spin up the cylinder...Mustang Dyno's use electrical resistance to put an actual "load" on the car and use this to calculate hp...General consensus is that the Dyno Jet dynos read about 8~10% higher than Mustang Dynos...When I asked where the dyna pac fit in they said.....Dynapack is going to read the highest by far, due to the lack of wheels. I really dont understand the reason for the Dynapack, just seems like it has no real world value, other than to produce bragging rights that is, well...I guess you can still tune with it.
 
Save
Reply Quote Like Like
#36 ·
esco said:
don't let that sway your judgement. Not all evo's are alike. The one they have is insanely low from the factory and it's a carb evo so already it's hammered by being in california and running monkey piss 91. An evo on the eastcoast can run on our everyday 94octane. Between 94 and 91 there's a siginificant difference. There can be a room full of evo's at a bone stock dyno meet. In the end they can be in the low 200's( very rare) to almost 250hp and yeah that was actually done in real life. The reason for the great difference is usually between evo's with the carb package and the fact that turboed or even high performance cars in general will be less consistent than normal n/a cars from the factory.

A larger fmic would greatly increase the efficiency overall. The evo stubby mentioned does have full exhuast too. but I believe that the evo he raced could have had more mods than what he mentioned to us or had a higher psi or that he dynoed that power with higher octane gas. Anyways I wasn't there so I couldn't say much but it doesn't take alot for evo's to be insanely fast. Here's a stock turboed evo in the 11's.
http://www.ultimate-racing.com/Products/Evo8Index-US.shtml
Click to expand...
Don't take that dyno chart too seriously. That's from Vishnu tuning, whose dyno is notorious for giving completely different readings from all the other dynos in the country. Shiv @ Vishu is sort of a flake IMO, but that's another story ;)
 
#37 ·
DLSracing said:
What kind of dyno was that EVO run on. See I have personally seen a car make 199.8 WHP on a dynojet and then it was taken to a dynapack and made 223.4 WHP. Also if you go to http://www.buschurracing.com/EVO_Stage1.html you can see that their stage 1 makes 284 WHP and he has a good bit more done to his EVO. I have taken it to the track and the quickest I have run is a 13.27 but traction is my worst enemy I was using 205/55/15 and just killing the tires through first and second. I usually will only run guys from a roll...Stubby
Click to expand...
What are your trap speeds in the 1/4? Much more informative than a bad-traction 13.27 ET. Any idea how much your car weighs? Sounds like the RB20 is working well for you :)
 
#38 ·
CornerHard said:
Don't take that dyno chart too seriously. That's from Vishnu tuning, whose dyno is notorious for giving completely different readings from all the other dynos in the country. Shiv @ Vishu is sort of a flake IMO, but that's another story ;)
Click to expand...
yeah I never took it seriously. I was pointing out some facts. You should be talking to 14.5drift about that.
 
#39 ·
It is my under standing that the dynojet is not to be taken seriously, thats all ive said. I dont know what esco's trip is. I can't show any thing that pleases him. After researching the dyno in question @vishnu, I found out it is more like a mustang dyno producing a more real world load with high power electric motors able to support a resisting load up to 900hp. It is also said to be setting a new industry standard in dyno meters. I guess this would be where esco would be dropping some education on me about how it all is, rather than listening or even discussing with me the info I have been researching. First insult me and make me look real stupid first what ever you do that way your arguements will have more value.
 
Save
Reply Quote Like Like
#40 ·
My evo dynoed 230whp stock and ran a 13.6@99. It really all depends on the dyno you go to. I actually dont give dyno numbers a second look because every dyno is different from each other. The only reason I see dynos as useful, is to see how much you improve from a previous dyno run ON THE SAME DYNO. :)
 
21 - 40 of 45 Posts
About this Discussion
44 Replies
13 Participants
Last post:
thagr81_us
Nissan 240SX Forums
posts
1.6M
members
94K
Since
2002
A forum community dedicated to Nissan 240SX owners and enthusiasts. Come join the discussion about performance, builds, engine swaps, turbos, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
S13 240SX (89-94) New Member Introductions General Tech S14 240SX (95-98) KA24DE & KA24E