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Cuts
Post #3396

Once there was a dirty nissan, it was out for a drive one night when it met a pole, and they became very close.
The end.




Also this happened.

Cuts
Post #3397










toffy
Post #3398

QUOTE (Cuts @ Feb 18 2011, 03:25 PM) *



is that a buick/commo v6?


 
Cuts
Post #3399

sure is

hq202
Post #3400

any specs ect ect ect cuts lol???? also whats it in?

Cuts
Post #3401

nar i dont sorry, just a pic that was posted on /o/ i thought people here might appreciate.

Webbey64
Post #3402

haha all that work and i bet the good ol commy v6 still only made 200kw at the flywheel

NickZ
Post #3403

this is the same type of motor and setup.

https://www.youtube.com/watch?v=ATfbspLsffg...feature=related

ecko
Post #3404

been browsing stanceworks

delazy
Post #3405





Webbey64
Post #3406

was a good read :oopsie:

delazy
Post #3407

lol, all the important stuff is in english tho??

7ag, ae101 4agze head, trust t518z, 264 in/ex cams, motec ecu, 0.5mm headgasket

RA65CHARGER
Post #3408

whats with the rear suspension delazy? helper springs?

that dude with laptop is playing solitare

Webbey64
Post #3409

is that bonnet purposely not aligned properly?

delazy
Post #3410

QUOTE (RA65CHARGER @ Feb 27 2011, 09:34 PM) *
whats with the rear suspension delazy? helper springs?

that dude with laptop is playing solitare


i noticed that...unsure to be honest, first setup like that ive seen...

QUOTE (Webbey64 @ Feb 27 2011, 10:47 PM) *
is that bonnet purposely not aligned properly?


yeh, dirty turbo toyota motors with high mount in small engine bay produce silly amounts of heat...rear is lifted slightly to try and get rid of the heat

ecko
Post #3411

QUOTE (delazy @ Feb 28 2011, 02:30 PM) *
i noticed that...unsure to be honest, first setup like that ive seen...



yeh, dirty turbo toyota motors with high mount in small engine bay produce silly amounts of heat...rear is lifted slightly to try and get rid of the heat

except its proven to do nothing to help

delazy
Post #3412

QUOTE (ecko @ Feb 28 2011, 10:42 PM) *
except its proven to do nothing to help


i dunno about that...

ask all the local guys that were made remove the bonnet spacers at oz-drift GP...they all complained of suffering higher than normal temperatures...

next event when they realised they were allowed to run them under Tassie regs not SA regs, they all reinstalled the spacers...

same arguments happen regularly at SA events...

chvzding
Post #3413

Hmmm, interesting one. I would say that thermodynamically the heat would escape through the gap. The heat lost is equal to the heat energy, time, airflow, transient properties and space to flow through. You would probably find that any heat lost would be similar to Evo's running a standard lancer bonnet. The easiest way to test this would be to install several digital thermometers and hook them up to a laptop so we can compare the average under-bonnet temperature over time. Repeat without spacers and for the sake of there being a control group of some kind, without a bonnet at all.

I'll supply the hardware if someone supplies the car.

Autumn_86
Post #3414

My bonnet had spacers when I got it but took them off might have to put them back & see if I notice a difference

NickZ
Post #3415

it doesnt work. it will suck air in, thats why a torana etc has a reverse scoop, it will bounce off the windscreen. it has been wind tunnel tested, you should be able to find videos on youtube or similar

delazy
Post #3416

DMAX tech drawing for the carbon bonnets they design/sell..origin also use the same concept in the bonnets they design and sell..both quite large companies..voltex who design alot of the aero for the serious time attack cars in japan, including the cyber evo run another similar design...not by lifting the bonnet, but a higher moulding at the rear most of the bonnet to allow air to escape...voltex do test all the aero in wind tunnels however...


ignoring the z tune type vent and also the very rear most vent...but the one on the very back panel of the bonnet...would be doing exactly the same as raising a bonnet would it not??

air sucked in from the forward moving motion of the car is then expelled via the rear of the engine bay taking the "heat" with it??

im no thermal/aerodynamic mastermind...but i am curious about it...

i dnt understand the wind bouncing back off the windscreen part...would it not continue to flow along the contours of the car due to being forced in that direction with forward movement??

i will add that wind tunnels are certianly an interesting thing...cyber evo in windtunnel...part 1 of 2

Funz
Post #3417

i believe its to do with the airflow over the bonnet creating a low pocket of pressure at the bottom of the windscreen, which in turn i believe would create a circulation of air at that bottom point of window where it meats the bonnet and not allowing air to escape properly? kind of like the forward most point of a ute tray being less turbulant i think, havent done aero stuff since college lol

gsr093
Post #3418

Lazy think you will find the aero testing that cyber does has very little bearing on heat more so on downforce and resistance.....time attack for a lap or so has very minor issues with overheating.

The aero on the cyber evo and the siera siera cars does not at all reflect on an issue with engine temps rather than dynamics- using diffusers and canards of the extreme which obviously have had a lot of $$$ in development_ windtunnel testing included to obtain the best result.

Sorry lazy ...the washers are a myth and to use aero testing which is primarily aimed at downforce and resistance to strengthen your point....is very much incorrect!!

delazy
Post #3419

certainly didnt mean for it to read in the way that it did scott...

as i understand the concept of windtunnel testing is certainly alot more to do with downforce/aerodynamics etc...

the comment about voltex was more so in relation to a large proven non rice company having similar designs built into a bonnet...more so than the i guess typical rice part brands in dmax/origin...

the video being posted was simply due to the comment being made about wind tunnel testing and i actually found it interesting watching it...i was quite suprised at the extra downforce generated by the aero on said car...30kg worth of downward pressure for quite "simple" aero in comparison to say an F1 car is pretty nuts...

either way im happy to admit it is well beyond my understanding...give me a simple bolt on kit purely for looks/style anyday...should be interesting to see how mark goes with his efforts on his ae86 to get more grip from means of aero/diffusers however...

im happy to pass it off as a myth...however i think drivers of cars noticing higher than normal temperatures at an event after being asked to remove the spacers is enough for me...certainly wasnt relating to hotter weather either as if anyone remebers ozdrift gp it was rained out both days...nor was the running of the event any smoother/quicker than normal tassie events...it was quite the opposite...breaks, longer waits between runs etc...

Webbey64
Post #3420

Maybe the best thing is find what works for your car specifically, If it runs cooler whith spacers use them if it doesnt dont use them. It would certainly be interesting to see engine temperature averages over X amount of laps with and without spacers, aslong as the ambient temperature stays constant and also take an average laptime. Interesting!!!

gsr093
Post #3421

I do apologise ...AGAIN LOL....as once again may have possibly been sidetracked from the discussion? As far as temps go I have no ferkin clue!!..but I do know that cyber and sieera teams don't really have issue with temp problems and the don't resort to putting washers in the rear of their bonnet hinges :P

toffy
Post #3422

i always thought it was only useful if you had a vent/air dam/whatever you call it underneath the car, i allways thought the lj xu1's had that chrome thing under them for the same reason except they used shark gills to vent it out? , could be wrong :P


 
gsr093
Post #3423

^^^^ me too, always thought you had to introduce in order to remove? !!!

delazy
Post #3424

QUOTE (toffy @ Mar 1 2011, 08:03 PM) *
i always thought it was only useful if you had a vent/air dam/whatever you call it underneath the car, i allways thought the lj xu1's had that chrome thing under them for the same reason except they used shark gills to vent it out? , could be wrong :thumbsup:


i know a few guys are running bash plates these days...which would possibly cause the same scenario...

MookieMadskillz
Post #3425

With ronnie the bonnet spacers did keep under bonnet temps down i could tell by the coilpacks not breaking down like they normally did,

Also if air is rushing in the front surely giving it a path of minimal resistance to escape would be a good thing ?

ripitup
Post #3426

i think some one is going to have to email the mythbusters for this one

ecko
Post #3427

On iPhone ATM will post vid when I get home that shows with bonnet spaced it sucks in air, which I guess is a good thing but it doesn't release hot air as some believe

ecko
Post #3428

notice anything ?

toffy
Post #3429

the badge is back to front on the engine cover? :(

renfen
Post #3430

coolest commodore ever?

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