View Full Version : Turbo Motor Dyno Run
Just did a dyno run today with my new turbo motor and on 92 octane pump gas, it made 504hp and 376 ft-lbs of torque at the wheels.
I will try to get the chart loaded into Excel and posted within the next day or two.
David,
Is this the custom single turbo you've been talking about?
Way to go!
-nel
Andrie Hartanto
03-06-2001, 18:29
David,
can u get pictures as well? How much the car weigh now? When is the next drag race and what is your expected times?
I am probably going to run in the Lone Star Nationals in a couple of weeks, so I will have 1/4 mile times then. In the mean time, here is the dyno chart:
http://albums.photopoint.com/j/View?u=1444190&a=10837322&p=42931161
The turbo I am using has a lot of adjustability, and I could easily swap the housing to make it spool up a lot quicker, but it would reduce high-end power a bit. I am getting about 200 ft-lbs of torque at 3500 rpm, so I am pretty happy with it now.
I will post photos and a complete description of the modifications in the next week or so.
How much did you pay for the turbo?
ExoticNSX
03-06-2001, 22:40
oooooh yes...info info....I want some info on you're magnificent NSX hehe....is it a totally custom turbo? and I hear.it's a single turbo?
Holy Schmitt-balls, Batman!! I wanna see pics of your NSX...
Give me a couple of weeks and I'll put up a post with all of the mods listed, detailed photos, prices, vendor sources, 1/4 mile times, etc.
Damn... VERY VERY nice... like the rest of the guys.. when are we going to get the details and pictures?! I would like to know the setup you have. this is probably the fastest street NSX.
scottjua
03-07-2001, 16:15
Just got back from lunch and a ride in David's car!!!
Hands down one of the fastest cars I've ever been in!!!
I will be capturing my video that I made here in a few minutes...Hopefully I will be able to put it up if I have any server space left over...
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Got dat ol' vee six cilnder inder?
http://www.nextestdrive.net
Post links to that video because I'm interested to see/hear his NSX. Thanks.
Also if you need some server space let me know I have a place to store it.
[This message has been edited by PUREVIL (edited 07 March 2001).]
scottjua
03-08-2001, 11:54
Ok guys here we go: I had this done about twenty minutes after my last post yesterday but I had to wait to get my server space boost request in :P
so here's the quick low quality version...and remember ignore the talking...and remember this was just a quick romp down the street:
http://www.nextestdrive.net/internalimages/videofiles/nsx508hp_sm.mov
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Got dat ol' vee six cilnder inder?
http://www.nextestdrive.net
judging by the person saying jesus christ and the way the camera gets thrown back when he punches it...I think i want the turbo setup...anyone got any footage of a nsx with a sc...What all does he have done to his car..and is that the comptech body kit? nice footage though
I guess you better do internals like Dave if you want that type of power.
Originally posted by sonik:
judging by the person saying jesus christ and the way the camera gets thrown back when he punches it...I think i want the turbo setup...anyone got any footage of a nsx with a sc...What all does he have done to his car..and is that the comptech body kit? nice footage though
scottjua
03-08-2001, 13:18
Actually I have some brief footage of the inside of Mark Weinberg's SC NSX...and I thought that was something else!!! My reaction was about the same...of course not knowing that THIS Turbo NSX was the king of all modified NSXs...no question.
From memory and seat of the pants feel...the SC punches up much quicker...but when the turbo spools up farther down the rev range...forget it. Not much out there will keep up...maybe an F50 or somehting. Apparently David had this same car SC'd at one time and it must not have done the trick. Maybe he will chime in here soon to shed some light.
It is the Comptech wide body...and in person looks awesome...it definitely goes well with the car's "new character" as he put it.
As for what's underneath...you'd have to get the skinny from David for specifics...He told me but I don't want to TRY to tell about it and mess something up...
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Got dat ol' vee six cilnder inder?
http://www.nextestdrive.net
OK I'm sold I want 500 HP so how much if I bring my car to TX??? http://www.nsxprime.com/ubb/smile.gif
Also are those Ferrari's in the background of that video? Where was that footage taken??? I'm looking forward to some real track times. Congrats David your car kicks ass.
what about sounds..I mean my friend has a supercharged integra and it just sounds awesome..besides the blow off valve is there any difference in sound?
nsx x ?$ =500 hp
Ok i think *everyone* is hooked now, even if they've never been in a turbo nsx...
So everyone's DYING to know, HOW MUCH IS THE TURBO SETUP!? http://www.nsxprime.com/ubb/smile.gif
[This message has been edited by Electro (edited 08 March 2001).]
NetViper
03-08-2001, 15:07
Wow, that is amazing! I have to get one of those. 504 HP is incredible. I havent seen any SC car that made that much power.
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NetViper -= looking to get an NSX before I turn 26! =- Didn't make 25 :(
scottjua
03-08-2001, 16:24
sound= racing car...damn crazy exhaust note...Even in the video you can hear that "turbo suck" outclassing the exhaust from the cabin...and the blow-off valve...psssssshhh...crazy.
he said his exhaust pipes are runnig straight from the turbo...no mufflers at all on thi current setup.
The place is Norwood Autocraft in Dallas...right off of NW Highway and 35. Norwood Turbo tunes just about ANYTHING including Ferraris. Probably the most outrageous car there has to be the Turbo F50 that they have done. As well as an 800+ hp Impala...some may ask why...I guess their answer might be "WHY THE HELL NOT?"
the URL doesn't seem to be up anymore but here it is: www.bobnorwood.com (http://www.bobnorwood.com)
NSX turbo cost= beats me...that's a David question for sure.
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Got dat ol' vee six cilnder inder?
http://www.nextestdrive.net
[This message has been edited by scottjua (edited 08 March 2001).]
BigbirdNSX
03-08-2001, 16:57
Just talked to the guys at Norwood, and all I can say is WOW. I can't imagine having 500 RW hp... but I'm going to see them next week!! Take it for what it is worth, but they said it could probably be done for somewhere around 30K. Holy cow, I want one!!!
Holy shit...maybe ill go with the gruppem sc after all
BlackMonster
03-08-2001, 17:55
We just returned from seeing David's NSX. UNREAL!!! The Comptech body kit and the Dali twin scoop hood look awesome, huge rubber meeting the ground, and it just sounds incredible. The exhaust is totally uncorked, shook the windows at the restaurant.
The turbo setup is sweet! Very clean, no piping everywhere, he could probably even put the engine cover back on it. But who would want to cover up that beautiful motor!!!
Dave, thanks again for taking out the time to get together with us. We're looking forward to seeing you smoke some people at the import drags!!!
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Brian
Austin,TX
95 NSX-T Black/Black
$30k?!?! *chokes on his own tongue* OMG that's another 91 NSX right there...
nevermind.... guess i'll keep the turbo on my nsx in my dreams...
David, can we see some more pictures? I'd love to see a few good pictures of the turbo setup and all the mods u have on your nsx...
very nice!
-Electro
[This message has been edited by Electro (edited 08 March 2001).]
scottjua, How about a video interview with David explaining his mods and a test drive with some perspective like racing a Corvette, Mustang, Supra, etc.
Andrie Hartanto
03-08-2001, 18:24
that's a great idea. Maybe if it's not taking too much time of yours, u can do it about the same time as the Lone Star National, so we can see his competition as well. would like to see him spank some of the supra guys for once http://www.nsxprime.com/ubb/smile.gif
Originally posted by scottjua:
Hands down one of the fastest cars I've ever been in!!!
Thanks, Scott, but keep in mind you rode in it with a brand new clutch, so I had to take it easy. ; )
As for the cost, I think if you planned it out carefully, you cold do it for $20-$25K for the engine work including the whole turbo system. Any drivetrain or brake upgrades would be on top of that.
Also, on my way home from Dallas to Austin, I got just over 20mpg at 80 mph (with several blasts to 120).
[This message has been edited by David (edited 08 March 2001).]
Perfect example of a both show and go NSX.
what about just taking a stock nsx and adding a turbo system and whatever needed to make it damn fast....is aftermarket headers and exhaust necessary?
SpeedDemon
03-08-2001, 21:15
Originally posted by sonik:
what about just taking a stock nsx and adding a turbo system and whatever needed to make it damn fast....is aftermarket headers and exhaust necessary?
Not at all. The Bell TT kit includes a complete Borla cat-back exhaust system (as well as a dual K&N intake system). Headers won't make much difference on the Bell setup, particularly if you're running through the stock cats.
As for people freaking out over the cost to have a 500+ hp Turbo NSX.. *Much of that cost has nothing to do with being turbo!*
If you are going to put 500hp out of *ANY* NSX (Turbo, SC, Nitrous, etc) you will have to do engine work, as people have posted in the past, the NSX engine is reliable to about the 425 - 450hp mark.
Also, any 500+ hp NSX (Turbo, SC, Nitrous, etc) will almost have to have a standalone fuel/timing system ($1750+?).
If you figure $6k (Comptech) for all the engine work not including installation/re-installation of the engine.. Add on the engine management (fuel/timing).. And then throw in labor for the engine + tuning the standalone.. I bet you are talking about $10K+ right there, no matter what solution you go with to get 500hp out of your NSX.
So really, the cost of the turbo system that would get you the 500hp isn't much more than $10K. It's the supporting mods that add up.
For those who might be willing to go for the supporting mods, but don't like the idea of having to go to Texas for David's system, or otherwise having a turbo setup custom made, I have good news for you.
A guy in Northern California had a stock Bell TT kit on his NSX. He added the supporting mods described above (strengthened the engine, added stand-alone fuel), and the ONLY other change he then made was to swap the Bell Aerodyne turbos with larger Aerodyne units. The larger units support 14psi.
Utilizing the stock Bell kit's plumbing, intercoolers, etc, he got:
500hp to the wheels. http://www.nsxprime.com/ubb/smile.gif Nice to know there's an upgrade path to insane power for those who go with the Bell TT kit.
Marc
[This message has been edited by SpeedDemon (edited 08 March 2001).]
[ would like to see him spank some of the supra guys for once http://www.nsxprime.com/ubb/smile.gif[/B][/QUOTE]
Guys, don't get carry away now. I know all the high HP supra guys in TX. Noel at 730 rwhp (stock internals, no cam), Bryce @ 872 rwhp (more hp coming, his car puts out 600 rwhp minimum due to racing wastegate @ 18 psi), Jarrett 800+ rwhp and many more. Also the Vette has SW in Austin. 500 rwhp is alot for a NSX and can be achieved via the internal engine mods which most of us would like to have but can't afford it or don't want to put out that much money. I am sure David can turn up the boost on racing gas later to get 600 rwhp. Even though I own a NSX, I would believe the heavily modified Supra will beat a heavily modified NSX in a straight line contest.
The NSX offers the total package and David has that due to his upgrade on brakes, body kit to fit bigger wheels for traction, etc.
Andrie Hartanto
03-09-2001, 02:35
Now I said some... Of course some of the Supra will still spank the NSX. But with David's power it should be very competitive.
Bryce Dana's Supra has yet to be proven. So far I heard he is a dyno queen.
ICBW
scottjua
03-09-2001, 11:22
I have to agree that there are certainly faster cars out there...but most of those won't turn for crap compared to the NSX. The Supras may make tons of power...and win drag races against ALMOST anything...but David's car is streetable and will probably out handle a Supra given a real track. But I don't need to tell you guys this... http://www.nsxprime.com/ubb/smile.gif
then again it's all a matter of preference. The Supra guys won't let you get away with saying that hp to hp the NSX would be a better car...as they shouldn't. And it really comes down to how well you can drive your car. I've never been a huge fan of drag racing mainly because the more power you have, obviously, the better you will do. I like seeing kids who are great drivers, pilot a civic hatch around a track and pull in better times than the Vette and Porsche guys. However that phenomenon is rare... it does happen.
Back to David's car...I'd be happy to do a video on him and his car for my site. In fact we already briefly discussed it. It would be a full deal...photos...story...video... And I think the hills in Austin would make a great backdrop. You Austin guys should know the roads better than I would...you tell me. Any suggestions? I'd really like to make somehting a bit more planned out than the videos I've done already.
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Got dat ol' vee six cilnder inder?
http://www.nextestdrive.net
BlackMonster
03-09-2001, 11:54
Roads?
For a warm up head to 2222. Then try Limecreek Road, twisty as hell. For long straight aways, with beautiful scenery, head a little futher south to the buda area. Lots of tree lined flat roads down by the Salt Lick (and good B-B-Q too!)
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Brian
Austin,TX
95 NSX-T Black/Black
scottjua
03-09-2001, 12:27
Sounds good so far...is there enough room to do some good video or are those roads pretty well traveled?
I've been out to the Salt-lick once...and that's WAY the F out there...atleast it seemed that way. But hopefully I can get some new camera mounts...or something...We'll see I guess. Either way it shoudl be lots of fun.
I just watched the viedo and I can say is..WOW! The care looks great, and the engine sounds awesome.
Bryce Dana's Supra has yet to be proven. So far I heard he is a dyno queen.
Bryce doesn't want to break parts to prove a point. His best time over a year ago is 11.3@ 130+ and he let off. Nobody is going to make 800 rwhp and no break parts if he or she drag races. Bryce's car doesn't break much because he doesn't stress it (launching the car).
I seen he race a Hennessey Venom 650 on the street (from a roll of course). I guarantee you no NSX would want to mess with this Viper and Bryce put him out. Started in 3rd gear and spun the drag radials.
David's car would be very awesome at Texas World speedway 2.9 course as it is a ridiculous fast track so he can use that power (I would think he can get up to 150's).
If I even mention this my wife will do what was done to Mel Gibson at the end of Brave Heart.
97-T @ 14K
Andrie Hartanto
03-09-2001, 23:38
Originally posted by Khuang:
Bryce doesn't want to break parts to prove a point. His best time over a year ago is 11.3@ 130+ and he let off. Nobody is going to make 800 rwhp and no break parts if he or she drag races. Bryce's car doesn't break much because he doesn't stress it (launching the car).
I thought Supras are pretty much bulletproof.
Bryce been challenged by Saad (AZ) few times and has yet to see the run. So far the fastest Supra I know of is Saad's with about 1000HP in full street trim and running 10's
Like I said. There are a lot faster cars than David's. But his car will be very competitive in this class. I would think that David's car should be able to break into 10's with the better weight distribution than Supra.
Hey guys there will always be a faster car. But David has taken NSX modding to a new level and a new extreme. We should congratulate him and encourage others to continue to push the performance envelop. I think its to soon to start saying this is faster or that is faster because we don't know what his car can really do. But I'm sure he's not done building and testing his new setup. I'm sure in time we'll see 700 HP NSX's too, I hope so anyways. http://www.nsxprime.com/ubb/smile.gif So I say again congrats David and I look forward to seeing your times at the track.
[This message has been edited by PUREVIL (edited 10 March 2001).]
19inchNSX
03-10-2001, 08:28
Hey David, did you happen to also modify the drivetrain and axles on the car? I was told by various people with extensive experience with the NSX that the stock axle can only withstand 425-450hp.
Originally posted by 19inchNSX:
Hey David, did you happen to also modify the drivetrain and axles on the car? I was told by various people with extensive experience with the NSX that the stock axle can only withstand 425-450hp.
I have no diffinitive information on the half shafts for this car. I have heard opinions all over the place, so I just decided to leave them stock for now and see it they work. If they bend or break, I will get billet or hardend replacements.
As for the rest of the drive train, I had to get a completely custom clutch fabricated because, as of now, there is no aftermarket clutch that will handle six hundred plus horsepower. It is a dual disc kevlar unit.
I also have the short gears, the billet 4.55:1 ring and pinion, and an aluminum flywheel and I rebuilt the diff. to the Type R specs.
It will be interesting to see what it does in the quarter mile, as the car is set up for road courses and I think traction is going to be the limiting issue. I will probably take it easy on the launch as I really don't want to spend any more $ in the near future. I have bought a set of BFG drag radials, so that should help a bit.
Austin has a very performance-oriented import scene, so there are a handful of Supras that I know will beat me easily in the 1/4, but anything less than a BPU is fair game I think. The import scene here is a little different than what I experienced living on the West Coast in that it is all about go and nothing about show. You rarely see the big wing, Kanji script covered, huge front spoiler type cars. If it doesn't haul ass, its just a posuer and is subject to ridicule in classic 'eat my dust' fashion.
Speeddemon......
What is the cost on this kit? I live in utah and wouldnt mind taking my nsx to california and leaving it to get this kit put on..if you want to email me:
chris_lovelll@hotmail.com
SpeedDemon
03-12-2001, 16:29
Originally posted by sonik:
Speeddemon......
What is the cost on this kit? I live in utah and wouldnt mind taking my nsx to california and leaving it to get this kit put on..
A new kit is probably around $9500. You'd want to buy the kit minus the fuel system for around $8500, and then spend $1000-2000 or so on a non-Bell fuel/timing setup. ($1k-2K depending on your goals & budget).
I put around $1200 into having a more advanced & tunable fuel control system as well as having a stand-alone adjustable timing computer so I can dial in some timing retard. Half of the $1200 was the Greddy Rebec 4 fuel controller.
Drop me a line in about 5 weeks, I should have my kit installed by then & can give you impressions, tips, & final costs. I plan to put up a web page listing all the parts I bought & how everything worked so others can benefit.
Marc
achlouber
03-12-2001, 23:16
I put out about 450hp to the wheels. Tons of nitrous torque, and power thrown in WAAAAY low in the RPMS. Jumps off the line when the clutch doesn't slip. David's right. There isn't any clutch that can handle that much horsepower comercially.. There are MANY other company's though that can make them. There are 6 disc clutch's out there for the NSX and ACT makes a triple dic that I heard was pretty radical. (2300 bucks) I now have the centerforce. Just a LITTLE better than stock.. That's about it.
I Just got 2nd in the the hOuston nopi's this February. My Bottle pressure died hard. I had a 5 car lead on him. My mph went slower by 6. Really sucked. I only ended up with an 11.9 sec 1/4 mile.
My stage II is up and running (Included in that 450hp number) I should run faster. I'm currently running a suspension set up for autocross. So hook up is in question. I think I've got the starts figured out though.
I look forward to seeing you in River city Raceway park next weekend. It will be interesting. I suggest turning up the boost.
achlouber
03-12-2001, 23:19
Oh yeah, I drive a beat up red '91 NSX.
Sounds great! By the way, I got my clutch custom fabricted by ClutchMasters. $1300 and they claim it will handle over 600hp. So far it has locked up fine.
achlouber
03-13-2001, 01:27
Please get them worked out.. I think there needs to be more of us out there!. I would LOVE a ride in your car. My ultimate ending will be 26psi of boost. A little nos down low for spool up. (Just for fun) Come out anyway if you don't get it all working.. I'd like to know what kind of engine management you went with and why.
See you then.. Hopefully.
Stock gears, stock everything - custom intake made by me and a couple of Borla mufflers welded in line. Lots of NOS.. Custom Crappy clutch.. Still goes fast. Falling apart at the same time. I'm fixing everything soon though (Dented fender un-painted spoiler)
what kind of NOS system are you running?
[QUOTE]Originally posted by achlouber:
[B]I put out about 450hp to the wheels. Tons of nitrous torque, and power thrown in WAAAAY low in the RPMS.
Looks like you have the highest HP NSX on NOS. According to http://www.nsxfiles.com chapter 60, you can get on his website since you out dyno Randy's car tuned by Larry. Check out the quote:
3. Randy N's NOS Powered NSX - Will very soon after the next dyno run will be claiming the highest horsepower of any street legal NOS powered NSX, and potentially the fastest streetable NSX in the quarter mile. Yes, with the direct port injected NOS, Randy's car feel faster in acceleration than my car or Alex's car. (December 29th Update: Randy's car is dynoed at the SHO Shop in Huntington Beach, and after being tuned by Larry with various jets/fuel pressure, it puts out 380 HP, and 303 ft lbs of torque!)
I'm now under my own heading here. It was Achlouber. I'm the one with the 450rwhp NOS nsx.
Moving on.. Thank for the info on the page to brag about hp, but that's ok. I don't need to challenge anyone.. I just have fun and try not to care to much to screw up the fun.
Anyway I put the kit together. It's a combination of two NOS kits with a nitrous express purge and two Nitrous Express fogger nozzles. One Nitrous express and one NOS bottle warmer for both bottles. I did the wiring and the custom aluminum intake with bungs to hold them solid in their place. I also have an inline T-rex fuel pump to make sure fuel gets to where it needs to go. One heat range colder plugs and 104 octane only with anything more than a 150 shot. (No adjustability on the timing though it's fairly safe considering the very conservative stock timing)
The short gears and Ring and pinion would make a larger difference. I'm hoping for the 10's this weekend, but reality always has different plans. (And probably so will my clutch.)
I'm dying to see this video but I only get a blank ie. window when I click it.
What am I missing?
Originally posted by nsxlr8:
It's a combination of two NOS kits with a nitrous express purge and two Nitrous Express fogger nozzles
Is it a dry system? I would think you would net to have a wet system to get that much more hp. Can't wait to see it.
It's definately a wet kit. No one I know in Houston uses a dry kit. (They all have a 100 shot or more on their Vettes, Camaros, or Mustangs.) Having problems with the ignition switch.. I guess it's old. Having it replaced as we speak. I still have to replace the rear wheel bearing befor the weekend. Have a leak in my NOS system.. Lots and lots of work and so little time!
If you need to beef up your spark, I finally found a solution for the weak NSX ignition. B&M makes a box that works great. Most of the other ones won't work on the NSX's direct fire, six ignitor system.
No, the actual ignition switch, where the key fits into. Stock ignition works great. I know what you are talking about with the B&M. How does the price compare to the one HKS has?
I'm not really sure what the B&M costs, as Bob Norwood got it for me. I have just never heard anything great about the HKS Twin Fire system and the B&M seems to work really well.
As for the NOS system being wet, that is what I thought. I don't understand why people run dry systems over a 70-100 shot, but I see them all the time. Maybe decisions like that are part of why NOS has such an underserved bad reputation. : )
Originally posted by David:
Just did a dyno run today with my new turbo motor and on 92 octane pump gas, it made 504hp and 376 ft-lbs of torque at the wheels.
I will try to get the chart loaded into Excel and posted within the next day or two.
David- Impressive stuff, congrats. I'm curious if you did a baseline dyno run on the same (or any) dyno before doing the mods. Do you know where the power was before you started. Also, I read quite a bit about your internal mods to support the power- what have you done internally?
Great Job-
Mark
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SuperCharge for World Peas
The short block has been decked and I had ductile liners pressed in. The pistons are forged 9.5:1 JE slugs with Teflon coating. That is about it.
The heads are polished with the CT valve train, including cams. I Extrude Honed the intake manifold.
The cams are a bit of a problem right now, as the profile is too high lift for the amount of boost I am running. If I ever get any more money, I am going to try to get some new cams with less lift and more duration. I really believe they would be good for another 20-30hp at least.
David what do u think about going twinturbo and instead of using bigger injectors, using the hks aic and wire 6 more injectors. i like to hear what u think or anybody else who wants too.
thanks
roger
I saw the video and it was awesome. I don't care how much HP Supra can make. I thought it was cooler than that 800HP Supra dyno video.
[QUOTE]Originally posted by TCRCNSX:
[B]David what do u think about going twinturbo and instead of using bigger injectors, using the hks aic and wire 6 more injectors.
I would get the bigger injectors as it should provide better fuel/air mixture than additional injectors. Also with addition injectors, you are running HKS AIC, another possible item that can go wrong. The main reason to run HKS AIC is for smooth idle, but I have been in cars with 720 cc injectors (3.0L supra) and they run fun. With 720 cc injectors, it should provide enough fuel for over 600 rwhp. The more parts you have the more possible problem you have.
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