[MINI-Morgan]

Has anyone fitted any after market bonnet scoops? If so which ones!

Defiantly want to hear about any with a bit more of a bonnet lip to grab more air flow too.

thanks

[sef]

I've got the BBR one... Looks superb...

[batou]

Was really impressed by the JCW carbon scoop, lovely piece!!

Now have the JCW carbon mirrors too

[GTT 280]

I started a thread on this in the GTT forum i think ... "Things you'd like to see..." as i thought that more air being channelled in the scoop would mean better cooling. There was also a lengthy article on bonnet scoops by some university guy and i think the results were that you only saw a 1 or 2 deg C change in temp - and to be honest, that is not significant enough. Maybe becuase this test was in humid high temps (usa) and not cold dry temps (uk) it had less impact - who knows.

I know that at cruising speed (70mph) on a fully warmed up engine, the Air Inlet Manifold temp is typically 15 deg C above ambient. So a 15 deg C day outside would see a 30 deg C air inlet temp.

30 deg C is quite warm, i wonder what impact reducing this to 20 or 10 deg C would be (assuming you could). What real power gains would you see? 1 bhp, 5bhp, 10 bhp?


So to conclude, i guess a bonnet scoop may scoop more air, but the effects of the "more air" - are they real?

Cosmetically, i think they look funny, make the bonnet look like a potato peeler but they do look funky. I don't think they have any detrimental effects (drag, turbulance, etc.)

Cheers,
K.

[MINI-Morgan]

The flow increases effect on the temp will really depend on your intercooler size, efficency and how much air flow actually goes through it.

I have heard so many scare stories about how a 17% pulley with a stock intercooler is dangerous but since I have exactly that setup without any scoop at all and have even run it without the intercooler tray id have to say i have proved otherwise. I better do some temp monitoring again but suprisingly without the tray it want that hot. Now when it gets to 30degrees im sure we will start to see an impact but 22degrees its fine.....

Now I need a replacement scoop so thought I better buy a slightly better flow one instead of stock.

[MINI-Morgan]

Quote: Originally Posted by sef (original)

I've got the BBR one... Looks superb...

I already have the BBR add on but just havent got around to testing it. If I had a standard scoop id probably do it tomorrow

[feenaldo]

M7 Did a thermo test on air scoops and decided a scoop and stock intercooler worked better than an aftermarket bigger intercooler although I'm not sure on this personally.

I was reading earlier I think it may have been Snowie, that said he hasnt personally found justification to use any other intercooler than his GP during his modding.

Who knows!

I saw a nice carbon fibre one that looks nice and aggressive, forget who makes it now.

[drumzz]

Quote: Originally Posted by feenaldo (original)

I saw a nice carbon fibre one that looks nice and aggressive, forget who makes it now.

maybe its the PALO UBER scoop? i just got one of those when i went to the states - the original size, but in carbon fibre

looks the dogs'

[Mike Edwards]

JCW Carbon

[MARK TAYLOR]

i had one on my s works.carbon fibre look [bbr]
looked realy tacky [halfords style] stuck on with tape ,took it off and sold it.im sure it made a buffeting sound thinking back.bought a jcw carbon fibre one instead.looks mint.but each to their own.
cheers mark

[Rigsey]

I have the BBR scoop, which I've taken on and off a few times.

When off I noticed the IATs take longer to cool than with the scoop on.

To my mind it must help cool the IC; your forcing more air over the IC ...

I have no real data to support this so it maybe complete rubbish

Looks are love or hate; I like mine on a dark silver motor

P.S. I have the GRS IC

[feenaldo]

Quote: Originally Posted by drumzz (original)

maybe its the PALO UBER scoop? i just got one of those when i went to the states - the original size, but in carbon fibre

looks the dogs'

Thats the one

I really want one!! Anybody know where I can get one from??

[sef]

Trying to speak to someone from Palo Uber in this country is nigh on impossible...

[OJM]

Says Mini Mania is an authorised dealer, so may be able to help...

Mini Mania U.K.
MINI Coopers by Mini Mania - MiniMania.com
(01) 525-841-733

For a company providing "the worlds finest Cooper S accessories" they've got an awful website! Make the company look like a joke!

[MINI-Morgan]

Yeah but really I dont like the look of it. The M7s are defiantly the best style ive seen so far

And the price is crazy for a piece of moulded plastic

[GTT 280]

Quote: Originally Posted by feenaldo (original)

M7 Did a thermo test on air scoops and decided a scoop and stock intercooler worked better than an aftermarket bigger intercooler although I'm not sure on this personally.

That can't be. I doubt my car would perform as well if i ran a standard intercooler. or would it?

No.

Cheers,
K.

[Ant FR]

firstly i would disagrea with GTT280 as for what the IAT is at 70mph. Mine will mostly sit at about 18-20 and this drops to about 12 during the winter months. 30 is only when booting it and can climb as high as 40 on a good blast.

As for add ons etc and banging on bigger flaps etc, well it all sounds good like it may improve IAT's but what sounds good in theorey does'nt always work in practice. Like when i fitted the new dumbo wings fitted tot he new Honda F1 car, i did'nt notice any difference in handling.....lol

But has anyone got one of these stick on scoops or reprofiled scoops in a wind tunnel or modeled it on a computer based flow profram to see exactly what hapens to the flow of air intot he cooler etc. remember that pressures are altered by the profile of the bonnett and a big flap may not always mean more air coming in.

Oh actually yes somebody did, BMW and they designed the scoop as it is for a reason, however if anyone thinks bangin on a small bit of plastic will help then go for it. I personally after reading in to this idea indepth have decided to keep it standard. I may just go for a Carbon fibre JCW one to add to the hardness look of my car, but thats it.

[Rigsey]

Quote: Originally Posted by Ant FR (original)

firstly i would disagrea with GTT280 as for what the IAT is at 70mph. Mine will mostly sit at about 18-20 and this drops to about 12 during the winter months. 30 is only when booting it and can climb as high as 40 on a good blast.

As for add ons etc and banging on bigger flaps etc, well it all sounds good like it may improve IAT's but what sounds good in theorey does'nt always work in practice. Like when i fitted the new dumbo wings fitted tot he new Honda F1 car, i did'nt notice any difference in handling.....lol

But has anyone got one of these stick on scoops or reprofiled scoops in a wind tunnel or modeled it on a computer based flow profram to see exactly what hapens to the flow of air intot he cooler etc. remember that pressures are altered by the profile of the bonnett and a big flap may not always mean more air coming in.

Oh actually yes somebody did, BMW and they designed the scoop as it is for a reason, however if anyone thinks bangin on a small bit of plastic will help then go for it. I personally after reading in to this idea indepth have decided to keep it standard. I may just go for a Carbon fibre JCW one to add to the hardness look of my car, but thats it.

As mentioned in my earlier post - I see quicker IAT drops with the scoop ...

We all agree that if you up-rate the power of an MCS you should up-rate the IC; IMO the scoop is an update to cooling.

[MINI-Morgan]

Have to agree with Ant on the temps. Cruising at 70mph mine is just above ambient temp.

Karl I promise you that you will loose performace with the stock intercooler as you loose boost pressure I wonder how the stock compares to aftermarkets on cooling efficency when it causes so much restriction. Certainly its interesting to look through one compared to others on the market.

[Silent1]

Quote: Originally Posted by Ant FR (original)

....
But has anyone got one of these stick on scoops or reprofiled scoops in a wind tunnel or modeled it on a computer based flow profram to see exactly what hapens to the flow of air intot he cooler etc. remember that pressures are altered by the profile of the bonnett and a big flap may not always mean more air coming in.

Oh actually yes somebody did, BMW and they designed the scoop as it is for a reason, however if anyone thinks bangin on a small bit of plastic will help then go for it. I personally after reading in to this idea indepth have decided to keep it standard. I may just go for a Carbon fibre JCW one to add to the hardness look of my car, but thats it.

Now i usually agree (in essence) with what you say ant, but BMW have certain constraints when designing a car.

Construction and Use Regulations - these limit any extrusions from the bodywork, the bonnet is a tough area as it has to conform to pedestrian impact rules.

Design Aesthetics - Most people who bought the MINI had no intention of tuning it, they also wouldn't like the look of a pseudo ram-air scoop, as all focus groups tend to contain these people i'm certain BMW wouldn't have even considered it

Just enough - Car manufacturers will always go with what's good enough, they won't spend extra money on creating a more complex mold for a bonnet scoop when the airflow through the standard hole is just enough for any model they intend producing.