RE: Driven: Mazda MX-5 BBR Cosworth

RE: Driven: Mazda MX-5 BBR Cosworth

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Discussion

Rob Stewart

97 posts

162 months

Thursday 30th December 2010
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steveti said:
adamasbo69 said:
5 grand id want at least 300bhp out of it for that money, you could probably buy a 300 bhp saph cossie for 5 grand and still have ur mazda for going down the salon!!
Yawn, yawn, yawn!rolleyes Old and tired comments, became boring a long time ago! BTW how old would the Cossie Saph actually be? Yeah OLD and boring. Oh yeah and how much would it weigh, oh yeah and it's a saloon car. Ya just can't compare and truthfully who'd want to?
I couldn't agree more. You would be luck to find a cossie that's still putting out it's factory bhp for 5 grand and you would have to spend a lot of money to get it back. It's all about power to weight ratio.

KM666

1,757 posts

184 months

Friday 31st December 2010
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hornetrider said:
KM666 said:
sorry for sounding nieve but would it not be left a bit wanting on the brake, suspension and tyre front? maybe its that wheels are so big but iv noticed alot of tuned motors seem to have small disks for the power? i only did a year of engineering in college so am aware that the standard brakes would be more then upto the job of stopping 5/6 times the load asked easily but it still seems odd as surely a larger disk gives better feel anyway?
Point taken but upgrades not really needed.

Tyres are 205/40/17 and it's difficult to get them to break free in the dry, there really is a lot of grip.

The Sport had Bilstein dampers and although it's quite high as standard the Mazda optional Eibach sport springs firm up the suspension and lower the car 30mm.

The brakes on the Mark 3 really are very good indeed. There is a lot of feel and combined with the RE050s give a lot of stopping power when you stomp on them.

For track work it might be a different matter of course, but on the road the setup would be more than adequate.
cheers to you and jonny617 its good to know that brakes have come so far

NJH

3,021 posts

210 months

Friday 31st December 2010
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I think I agree about the brakes and amount of grip available, also has a fantastically good LSD in the sport. The 3 criticisms I have of ours is firstly the sound, secondly the cars inability to use its grip on British back roads compared to our 968 (brilliant on uber smooth German tarmac though) and lastly the lack of top end from the engine. The engine and gearbox combo on these is weird, it feels really sprightly, kicks well but then you look at the speedo and realise your own doing 50 mph. This upgrade fixes the last point and I am sure will make for a very rapid little car.

Given how frantic a standard one can feel with its insanely close 6 speed box this thing will feel like going through the gears on a motorbike.

Housey

2,076 posts

228 months

Friday 31st December 2010
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This is interesting as I bought my wife a Mk3.5 Coupe 2L Sportech few months back and I have been considering getting it tweaked a bit to make it more appealing to me at weekends, though to be fair I still get a big smile when I drive it in standard form. I agree with the comments on the brakes, probably the thing that impressed me most about the car such good retardation and lovely feel too, impressive. LSD is very well set up too and allows for endless sideways fun in the wet, though in the dry breaking traction is not easy which is why I think this conversion will not tax the traction too much if they have the power delivery sorted.

Looking forward to reading some proper road tests on this car.

Jonny671

29,398 posts

190 months

Friday 31st December 2010
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Housey said:
This is interesting as I bought my wife a Mk3.5 Coupe 2L Sportech few months back and I have been considering getting it tweaked a bit to make it more appealing to me at weekends, though to be fair I still get a big smile when I drive it in standard form. I agree with the comments on the brakes, probably the thing that impressed me most about the car such good retardation and lovely feel too, impressive. LSD is very well set up too and allows for endless sideways fun in the wet, though in the dry breaking traction is not easy which is why I think this conversion will not tax the traction too much if they have the power delivery sorted.

Looking forward to reading some proper road tests on this car.
Have you had anything done to it so far?

Eibach 30mm springs go well with a WIM/Rodders Geo Set Up. The eibach height/stiffness is actually how Mazda designed it but because of our stupid pedestrian safety laws the vehicle has to be higher than it was built to be.

Housey

2,076 posts

228 months

Friday 31st December 2010
quotequote all
Jonny671 said:
Housey said:
This is interesting as I bought my wife a Mk3.5 Coupe 2L Sportech few months back and I have been considering getting it tweaked a bit to make it more appealing to me at weekends, though to be fair I still get a big smile when I drive it in standard form. I agree with the comments on the brakes, probably the thing that impressed me most about the car such good retardation and lovely feel too, impressive. LSD is very well set up too and allows for endless sideways fun in the wet, though in the dry breaking traction is not easy which is why I think this conversion will not tax the traction too much if they have the power delivery sorted.

Looking forward to reading some proper road tests on this car.
Have you had anything done to it so far?

Eibach 30mm springs go well with a WIM/Rodders Geo Set Up. The eibach height/stiffness is actually how Mazda designed it but because of our stupid pedestrian safety laws the vehicle has to be higher than it was built to be.
Well I've had the alignment sorted by Chris Franklin as it came from the factory out, as normal! This improved it's road manners but in the main it improved the steering. It is my wife's car so I am not going to make it too extreme and I am currently having a Mk1 racer built so that will sort the track fix but I would like to add more horses to the road car. Can't see me having the road car lowered or stiffened too much but never say never.

Here it is from the day we collected it from the excellent Perrys in Blackburn


Marf

22,907 posts

242 months

Friday 31st December 2010
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The real Apache said:
Marf said:
Herman Toothrot said:
I don't know why people think it's expensive for such a gain.
Because they have bugger all experience in modifying cars. smile
yes
Look at what you get

BBR Cosworth Mazda MX-5 MK3 supercharger specification

* Cosworth Inlet manifold housing
* Eaton 4th generation MP62 Supercharger
* Intercooler (Air to water)
* High flow calibrated injectors
* High flow air box, with high flow air filter
* Competition high grade hoses and fixings throughout
* BBR Auxiliary Interceptor 2010 engine control unit (ECU) with 3-D mapping and MAP sensor
* BBR Cosworth identification badges

The supercharger will likely be around 40% of the price, the chargecooling system another siginificant chunk, not to mention the development work on the ECU side of things and the labour to fit it all.

For £5k its a pretty damned good deal if you ask me.

mikey k

13,011 posts

217 months

Friday 31st December 2010
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I wonder what the peak boost pressure is.
I'd guess it would be easy to up it a bit wink
My S2000 was 320 BHP @ 6 psi from the stock kit
I got it up to 420 BHP at 10 psi with a few tweaks smile

abarber

1,686 posts

242 months

Saturday 1st January 2011
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Don Phil said:
Bit of googling finds a rolling road printout:

So 171bhp at the wheels becomes 235bhp at the crank. Lol.

I'll stick with the Mk1/Mk2s, haven't enjoyed the handling with a MK3 as yet.

Black S2K

1,473 posts

250 months

Monday 3rd January 2011
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No; you won't enjoy the handling of a Mk3 unless it has been lowered back to where it was meant to sit.

Having said that, the MK1 was such an unashamed Britcar pastiche rip-off, it IS far more fun than the more self-seriously MK3.

For the money thing would cost, it'd be silly not to...

CocoPops

463 posts

232 months

Monday 3rd January 2011
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Having throughly enjoyed my MK3 on track at a LotusOnTrack day, I can see that with a bit more power it would be superb.

The handling is spot on once lowered to where it should be and the LSD makes it a joy for sideways action on demand.

Think I'll start a savings fund for the conversion, it's the sort of thing that would make me keep the MX-5 for a long time.

hornetrider

63,161 posts

206 months

Wednesday 5th January 2011
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So I emailed BBR with some questions regarding the conversion. Whilst I haven't heard back from them yet on those issues (it is only the 2nd day back after New Year) I have had a circular email from them as I'm now on a mailing list.

BBR said:
Dear Sir, thank you for your recent BBR Cosworth supercharger enquiry, please find below offer you will find difficult to refuse!

BBR Cosworth Supercharger - Buy back offer

We realise at BBR that many of our potential clients with the new MX5 NC model will possibly not keep their car for longer than three years, so if you are keen to have a BBR Cosworth supercharger fitted to your MX5 here is an offer you will find difficult to refuse:

Any BBR Cosworth S/C conversion ordered before March 2011 and installed by BBR qualifies for this unique offer.

When you have finished with your BBR Cosworth S/C MX5, fancy a new car or just a change, BBR will buy back your used S/C conversion from you. We will return your vehicle back to standard (using the parts returned to you at installation) for no charge and give you £1250 cash in your hand, yes, we mean it, returned to STD FOC and you will receive £1250 cash!

Offer is valid for 3 years from time of installation and up to a maximum of 40 000 conversion installed miles.
Considering they are doing the work FOC I think that's a great offer!!

VladD

7,858 posts

266 months

Wednesday 5th January 2011
quotequote all
hornetrider said:
So I emailed BBR with some questions regarding the conversion. Whilst I haven't heard back from them yet on those issues (it is only the 2nd day back after New Year) I have had a circular email from them as I'm now on a mailing list.

BBR said:
Dear Sir, thank you for your recent BBR Cosworth supercharger enquiry, please find below offer you will find difficult to refuse!

BBR Cosworth Supercharger - Buy back offer

We realise at BBR that many of our potential clients with the new MX5 NC model will possibly not keep their car for longer than three years, so if you are keen to have a BBR Cosworth supercharger fitted to your MX5 here is an offer you will find difficult to refuse:

Any BBR Cosworth S/C conversion ordered before March 2011 and installed by BBR qualifies for this unique offer.

When you have finished with your BBR Cosworth S/C MX5, fancy a new car or just a change, BBR will buy back your used S/C conversion from you. We will return your vehicle back to standard (using the parts returned to you at installation) for no charge and give you £1250 cash in your hand, yes, we mean it, returned to STD FOC and you will receive £1250 cash!

Offer is valid for 3 years from time of installation and up to a maximum of 40 000 conversion installed miles.
Considering they are doing the work FOC I think that's a great offer!!
That does sound very good.

CocoPops

463 posts

232 months

Sunday 16th January 2011
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So has a "paying punter" had this conversion done yet?

CocoPops

463 posts

232 months

Tuesday 14th June 2011
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So, 6 months on....

How many conversions have been done?

hornetrider

63,161 posts

206 months

Tuesday 14th June 2011
quotequote all
CocoPops said:
So, 6 months on....

How many conversions have been done?
There's a few on mx5.com/forum in the Mk3 section