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Author Topic: Post up your N/A dyno results  (Read 16304 times)

Stalk3r

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Post up your N/A dyno results
« Reply #105 on: January 12, 2012, 05:23:48 PM »
Quote from: Skyla
I know of One particular R33 GTS25 that made 154rwkw (I've seen the dyno chart as I questioned it too), and thats on a stock engine with extractors, 2 1/2" exhaust, intake mods and a few other things done.

thats all mine had done to it (intake, extractors and other little stuff) but with a 3" exh and it got 117.1 at that dyno day in tga (you were there with yours too), sceptical on the 154 also, perhaps it had eaten magic beans

screamin' skyline

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« Reply #106 on: January 12, 2012, 06:08:11 PM »
Does seem high aye. Can't remember what the 'other' mods were Rach? I think I'm still under 140rwkw with all my mod's. -I forget.  1998cc still but.

westybob

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« Reply #107 on: January 12, 2012, 10:48:36 PM »
You're still making more power than my old Austin Healey 3000 with its 3L twin carb engine (about 110kw at the flywheel)!!

Skyla

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« Reply #108 on: January 12, 2012, 10:57:10 PM »
Here's the dyno print out http://img145.imageshack.us/img145/593/p5100137.jpg
The other mods that were done were discarding the viscous fan and replacing it with a electric fan and under driven pulleys.
Shane didn't your old red GTS pull 120rwkw on a dyno after you had it tuned? If I remember rightly it had electric fans too didn't it?
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

Stalk3r

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« Reply #109 on: January 12, 2012, 11:18:24 PM »
i wasnt saying you were lying or wrong when i said i was sceptical, i just dont know how the hell thats happened, especially considering the listed mods were similar to mine, and on that very day your car had more done than mine and the power was within 2kw of mine

gtsr

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« Reply #110 on: January 13, 2012, 12:04:07 AM »
The pulleys might give you a 5.62hp gain over stock pulleys. That's going by dyno result's on this 370Z with intake, exhaust mods -

http://www.youtube.com/watch?v=Pog0uNl8jO8

I was thinking, one thing that it could be is a turbo engine or turbo head that was fitted to NA block.  

I remember reading that Nissan did this with SR20DE engine in BTCC racecars (used a GTi-R SR20DET engine with NA parts on it, etc). The bigger valves, bigger ports, cam specs, etc in a turbo head might make it possible to reach that rwkw.

Here's the thread showing the SR20DE engine Nissan used (post number 4) -

http://www.nissan-si.net/viewtopic.php?t=646

For RB20DE, take a RB20DET engine and work backwards.

Skyla

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« Reply #111 on: January 13, 2012, 07:25:05 AM »
Quote from: Stalk3r;589060
i wasnt saying you were lying or wrong when i said i was sceptical, i just dont know how the hell thats happened, especially considering the listed mods were similar to mine, and on that very day your car had more done than mine and the power was within 2kw of mine


No worries Aaron I didn't take it that way just thought I'd post the chart up anyway since it is once again a current topic, it's there, I've seen it but it's still hard to believe.

If nothing else your Car with the 3" exhaust blows peoples theory out of the water about N/A's needing back pressure to. That was a good result and from what I saw at a certain day at puke it  sure as hell hauled arse for a N/A.
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

screamin' skyline

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« Reply #112 on: January 13, 2012, 07:40:56 AM »
Quote from: Skyla;589057

Shane didn't your old red GTS pull 120rwkw on a dyno after you had it tuned? If I remember rightly it had electric fans too didn't it?


Yeah my old GTS ran 120rwkw and then 108 a few years later on another dyno. Think that was at Dynopower.
Rallycar ran 130 something on both a hub dyno and rolling road within a month of each other. Surprised the read the same.

Old GTS had electric fan, intake, filter, extractors and 2.25in exhaust. If the viscus fan is working properly you shouldn't loose any hp unless the car is running hot and the fan locks in. I didn't see any measureable increase with the electric fan. Would make a difference on my HR Holden that runs a fixed fan tho.

Lith

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« Reply #113 on: January 13, 2012, 09:43:48 AM »
Quote from: Skyla;589074
No worries Aaron I didn't take it that way just thought I'd post the chart up anyway since it is once again a current topic, it's there, I've seen it but it's still hard to believe.


Cheers for posting that, nothing outwardly suspicious looking about it - really interesting.  Shame he went turbo afterwards, haha - that old motor might have been something quite special... stranger things have happened.   It would have to have tuning etc done to do that though.   The pulley mods etc definitely won't gain that kind of power, the breathing of the engine itself would have to have been improved substantially.

Quote
If nothing else your Car with the 3" exhaust blows peoples theory out of the water about N/A's needing back pressure to. That was a good result and from what I saw at a certain day at puke it  sure as hell hauled arse for a N/A.


That RB20 is very cool, very stout result... would love to see it racing in person some time!

There is a crap load of stuff people regurgitate in forums etc based on theories credited to no-one in particular, I've well and truly lost interest in trying to put people right on some things like this with debate.  No one can argue with results, though ;)    

There are a lot of things on my flatmates Honda which plenty of know it alls would say won't do anything, if not cost it performance (not least of which a 3" exhaust) but going by the fact its making more power than most small displacement NA motors before it even hits VTEC I suspect we've done something right :D
"The only true wisdom is in knowing you know nothing."
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Stalk3r

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« Reply #114 on: January 13, 2012, 09:57:28 AM »
Quote from: Skyla;589074
No worries Aaron I didn't take it that way just thought I'd post the chart up anyway since it is once again a current topic, it's there, I've seen it but it's still hard to believe.

If nothing else your Car with the 3" exhaust blows peoples theory out of the water about N/A's needing back pressure to. That was a good result and from what I saw at a certain day at puke it  sure as hell hauled arse for a N/A.


thats cool i was hoping you hadnt taken it that way it certainly wasnt the intention

and yea that engine delivered more than it wrote on paper thats for sure, however there was more going on with the suspension setup in that car than normal so that definitely helped with the times around puke

Stalk3r

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« Reply #115 on: January 13, 2012, 10:40:35 AM »
just discussing it outside the forums, we observed the SAE down the bottom of the page, perhaps its not measuring the same as ours Skyla?

Lith

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« Reply #116 on: January 13, 2012, 11:14:20 AM »
Wait, just realised the 3" exhaust was in reference to your car - not Screamin's... sounds like yours goes well too :D  Though not familiar with the setup?
"The only true wisdom is in knowing you know nothing."
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Stalk3r

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« Reply #117 on: January 13, 2012, 11:18:28 AM »
no where near as elaborate as his, i just did everything i could without cracking the engine then spent all my time working the suspension/geometry

edit: car/engines long gone now though, when i sold the engine i pulled it down and freshened it up for the new owner, 250k and still looked like new, and i r**ed the hell outta that thing, like really
« Last Edit: January 13, 2012, 11:20:36 AM by Stalk3r »

SkylineObsession

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« Reply #118 on: January 14, 2012, 12:43:49 PM »
Quote from: screamin' skyline;589077
Yeah my old GTS ran 120rwkw and then 108 a few years later on another dyno.


It did 107.8kw late last year, as i think you already know Shane. :)

Did you find (on the road/track) that you can really feel the power drop off after about 6krpm (or somewhere around there)?

And do you remember what you changed (if anything) between the 120kw run and the 108kw run?

screamin' skyline

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« Reply #119 on: January 23, 2012, 10:51:21 AM »
Good to see it is staying consistant. You must be looking after it.
Yeah it was always a bit asmatic (sp?) up top, that's why I built the ITB setup on the rallycar. If you rev it to 7 - 7,500rpm it does make it better for the next gear though.

I think I changed the air filter and intake setup a little from memory.