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Author Topic: Post up your N/A dyno results  (Read 16431 times)

Skyla

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Post up your N/A dyno results
« on: September 25, 2005, 11:16:00 PM »
I'm starting this thread with the hope that it might be useful in helping others with future mods on there N/A skylines ;) .
There are a few of us that have decided to pursue the elusive N/A gains, either to be different from our turbo powered brothers or for others of us a turbo powered car simply isn't an option just yet, and still want to enjoy getting a bit more power from our rides.  
There is often a lot of trial and error when we dicide to do something new, as there seems to be a limited amount of info when it comes to N/A skylines, people simply like the easy more cost effective power gains of the turbo models.
And for us that have chosen to stay N/A it can often be a costly exercise to chase those hard to come by KW, and to find the most cost effective way possible.
Hopefuly this thread will help in letting people know what sort of power gains can be expected before spending there hard earned cash.

People that decide to post their dyno print outs could you please list the model of their car and what type of dyno (hub or rollong road) has been used, and what mods have been done to get the results. :)
R33 GTS25, the 121rwkw 16 sec 1/4 mile whale snail

Taupo track 1, 1.56 (A1GP)
Taupo Track 2, 1.23
Taupo track 3, 47.89
Taupo track 4, 2.02
Manfeild, 1.30
Pukekohe, 1.17
Hampton Downs, 1.25

Skyla

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Post up your N/A dyno results
« Reply #1 on: September 26, 2005, 12:32:29 AM »
Our 94 R33 GTS25 sedan, is slowly been built up over the past few years. Our first dyno was done when the car was still an auto, on a rolling road dyno. The mods were a K&N panel filter, 2 1/2" exhaust system and extractors, It made just on 100rwkw.
 
Our 2nd dyno was done after we converted the car to manual and added a LSD, still with the same mods as before, made 112rwkw as a manual. The 12kw power gained was a direct result getting rid the power wasting slush box.

Our final dyno was done a couple of days ago, Made 117rwkw on a rolling road dyno, Still has the 2 1/2" exhaust, extractors, K&N pod filter with cai, custom 3" intake (that I'm still experimenting with), and an after market ECU (GTS link) that could do with more tuning.

very little power has been gained with the addition of the new intake, pod filter and ECU, for the amount of money that I have invested, bang for buck I would not advise changing the ecu, as there doesn't seem to be much to be gained in that department, but for me the ecu is a necessary step for my future engine mods and to be able to run larger duration cams.
« Last Edit: September 26, 2005, 12:35:56 AM by Skyla »
R33 GTS25, the 121rwkw 16 sec 1/4 mile whale snail

Taupo track 1, 1.56 (A1GP)
Taupo Track 2, 1.23
Taupo track 3, 47.89
Taupo track 4, 2.02
Manfeild, 1.30
Pukekohe, 1.17
Hampton Downs, 1.25

Gerbal

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Post up your N/A dyno results
« Reply #2 on: September 26, 2005, 10:08:08 AM »
Would you believe 148kw :D

Skyla

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« Reply #3 on: September 26, 2005, 08:18:19 PM »
Quote from: Gerbal
Would you believe 148kw :D

Yep :D , at the flywheel :p
R33 GTS25, the 121rwkw 16 sec 1/4 mile whale snail

Taupo track 1, 1.56 (A1GP)
Taupo Track 2, 1.23
Taupo track 3, 47.89
Taupo track 4, 2.02
Manfeild, 1.30
Pukekohe, 1.17
Hampton Downs, 1.25

Gerbal

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Post up your N/A dyno results
« Reply #4 on: September 26, 2005, 10:35:21 PM »
Hmmmmmm......oooooook!  We will see when the VENOM kit's hooked up :D It won't be no 'laughing' matter than ;)

Skyla

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Post up your N/A dyno results
« Reply #5 on: September 26, 2005, 11:05:14 PM »
mmmm nos :D, the best bang for buck of all :king:
R33 GTS25, the 121rwkw 16 sec 1/4 mile whale snail

Taupo track 1, 1.56 (A1GP)
Taupo Track 2, 1.23
Taupo track 3, 47.89
Taupo track 4, 2.02
Manfeild, 1.30
Pukekohe, 1.17
Hampton Downs, 1.25

Gerbal

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Post up your N/A dyno results
« Reply #6 on: September 27, 2005, 10:47:01 AM »
My thoughts too :D...although alot of folks here (SDU) seem to have adverse opinions on it  :rolleyes: Some seem to think it's 'cheating'...I've got nothing against turbos, but I prefer the more even power thru the range from a n/a engine and extra power at the flick of a switch when needed. (Different horses for different courses ;) ).

mrmeal

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Post up your N/A dyno results
« Reply #7 on: September 29, 2005, 02:28:01 PM »
Whats the bottle cost to fill and how long does it last?  I know that last part is heavily dependant on how long you burst it or how often,  but on average,  not a drag meet or anything,  how often do you think you'd need to refill the tank?
If you try and don\'t succeed, cheat. Repeat until caught. Then lie.

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Lazy R33

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Post up your N/A dyno results
« Reply #8 on: October 04, 2005, 09:51:05 AM »
when i had my 33,i had a k&n pod filter and the cat replaced with a straight pipe welded in.the result was 126.4kw atw done on the hub dyno.

salival

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Post up your N/A dyno results
« Reply #9 on: October 04, 2005, 05:37:13 PM »
R32 GTS 4 door.. RB20DE.. pod filter, resonator inplace of cat.. No messing with the timing..

95KW @ the hubs..

power run
Air fuel ratios

Have since advanced the timing and running 98 octane instead of 96.. so it would definitly be higher..

Have no other plans apart from swapping motor for some boost loving :)

Skyla

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« Reply #10 on: October 04, 2005, 10:49:07 PM »
:eek: now thats torque :D , amazing how much higher the torque is on the hub dynos ;)
Good figures you have there :) ,
I find it quite interesting that for some reason the RB20DE engines always seem to produce better figures in comparison with the RB25DE's, taking into consideration that the RB25DE are suposed to have an extra 24kw at the flywheel, often that is not reflected on the dyno, when comparing a RB20DE to a RB25DE.
Anyone got a theory on why this might be?
R33 GTS25, the 121rwkw 16 sec 1/4 mile whale snail

Taupo track 1, 1.56 (A1GP)
Taupo Track 2, 1.23
Taupo track 3, 47.89
Taupo track 4, 2.02
Manfeild, 1.30
Pukekohe, 1.17
Hampton Downs, 1.25

salival

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« Reply #11 on: October 05, 2005, 06:53:45 AM »
It's okay.. one thing itdefinitly suffers from is anything under 4k.. in first gear as soon as it hits 4k it pulls.. same as 2nd gear.. you can hear the engine change it's whole noise and so forth..

But it's great for towing :)

screamin' skyline

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Post up your N/A dyno results
« Reply #12 on: October 05, 2005, 08:37:11 PM »
Well finally got round to posting my dyno sheet. It's only the second time it's been on one since being dyno tuned by a Nissan dealer. He got 120rwkw, I recorded 108rwkw. Interesting to see the drop, could be one of two reasons. I need a tune up again or the dyno's read differently. Anywho, I'm still happy with the result.
Specs:
RB20DE
Cold air induction and airbox
UNIfilter
3in induction pipe
headers
standard bore pipe with three cobys

Quite pleased with the power delivery after the tune. She used to be quite flat down low but the tune up seemed to fix that. The power drop off at top end does bug me a little, just gotta remember to short shift slightly, but that's expected on a standard engine.

GETLOW

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very disapointing dyno :(
« Reply #13 on: October 09, 2005, 12:51:41 PM »
specs:
rb20E
custom intake pipe and CAI
K&N pod
coby extractors
2.5" mandrel bent cat back with stock 25t muffler
earth kit

done at speed tech on a dynapack hub dyno
results 71.7kw at 140km/h at 5083rpm
         146.75Nm of torque at 120kph at 4348rpm

what has caused such a poor result? i was running the car on 98. i think the timing needs to be advanced? i even got beaten by a standard mazda lantis in both power and torque.. grr im so annoyed  :splat:
1JZ VVTI R33 using a custom RB25DET gearbox (almost running)

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Skyla

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« Reply #14 on: October 09, 2005, 02:04:15 PM »
Hey it's not so bad, remember the RB20E only comes out with 96kw and 172nm of torque at the flywheel. So your results aren't really that bad taking into account the loss through the drive train of around 30%, and power loss through normal wear and tear.
The mods you have done are good, and would probably have gained you an extra 10-15kw at the treads.
Just a question about your custom intake, did you notice any adverse effects when you put it on, loss in torque maybe?
I noticed a loss in torque when I put mine on.
Just curious what sort of power and torque were you expecting?

This is just a little exercise to show you something taking a comaprison with my RB25DE and your RB20E, Hopefully the results will make you feel a little better.

RB20E.......96kw @ the flywheel (factory)
your car....71kw @ the wheels
difference.. 25kw

RB25DE.....142kw @ the flywheel (factory)
My car .....117kw @ the wheels
Difference.. 25kw

Taking into account account, we have almost identical engine mods, intake and exhaust, the only difference is I've spent $$$$ on a aftermarket ecu, that did very little in the hunt for extra KW's. If anything your car has responded better to the mods than mine, hmmmm I'm feeling so disapointed with my cars power figures now. Argh...N/A cars :laugh:
R33 GTS25, the 121rwkw 16 sec 1/4 mile whale snail

Taupo track 1, 1.56 (A1GP)
Taupo Track 2, 1.23
Taupo track 3, 47.89
Taupo track 4, 2.02
Manfeild, 1.30
Pukekohe, 1.17
Hampton Downs, 1.25