Wanting quicker acceleration NC with cosworth Supercharger

Discussion regarding Turbocharged and supercharged MX-5s

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby NitroDann » Wed Mar 09, 2016 7:00 pm

speed wrote:Just for my limited opinion, what is the 0-100 time now?
I know it's not the best test but would give me something to compare it to.

Thankyou


For interests sakes a lot of the turbo na.nb chassis get into the mid 4s on the street on street tyres.
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speed wrote:If I was to do it again, I wouldn't even consider the supercharger.

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby Novice1 » Wed Mar 09, 2016 7:12 pm

NitroDann wrote:
speed wrote:Just for my limited opinion, what is the 0-100 time now?
I know it's not the best test but would give me something to compare it to.

Thankyou


For interests sakes a lot of the turbo na.nb chassis get into the mid 4s on the street on street tyres.


I thought friends golf r was quick at 5 secs flat to 100 kph.

Then another friend bought 2016 merc a45, 0-100 4.2 secs. That thing absolutely hammers.

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby NitroDann » Wed Mar 09, 2016 8:29 pm

Only 0-100, it would be womped 50-150 or higher by an MX5 turbo with a stock engine.
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speed wrote:If I was to do it again, I wouldn't even consider the supercharger.

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby Novice1 » Wed Mar 09, 2016 10:13 pm

NitroDann wrote:Only 0-100, it would be womped 50-150 or higher by an MX5 turbo with a stock engine.


It would be interesting Dan my old mx5 205 kw atw vs friends merc. Lol.

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby speed » Thu Mar 10, 2016 8:32 am

NitroDann wrote:
For interests sakes a lot of the turbo na.nb chassis get into the mid 4s on the street on street tyres.


Thanks Dann, power to weight FTW.
Would that translate to ballpark 12 sec quarters or faster?

Novice, apologies for the highjack but speed, power and weight appear relevant. :)
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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby Dan » Thu Mar 10, 2016 9:11 am

For reference, it looks like the A45 with just a tune does a 12.28 and has a trap speed of 112mph (180km)
Image

If someone has the trap speed for a stock block turbo MX5 it'd be interesting to compare.
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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby Novice1 » Thu Mar 10, 2016 10:17 am

Friend charlies car.

Power to Weight Ratio Engine power divided by vehicle weight 186.7 (W/kg)
Engine CodeEngine code as specified by the manufacturer. M133 Torque The 'pulling power' of a vehicle, measured in Newton metres (Nm) 475Nm @ 2250-5000rpm

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby NitroDann » Thu Mar 10, 2016 10:58 am

Engine torque is not relevant to performance.
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speed wrote:If I was to do it again, I wouldn't even consider the supercharger.

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby Magpie » Thu Mar 10, 2016 12:22 pm

Novice1 come out to Morgan Park next Saturday and give a demonstration :)

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby bruce » Thu Mar 10, 2016 2:15 pm

Despite what people say, the A45 is one ugry car. A funny looking Benz with bits hanging off. Stock exhaust sounds horrible (echoey drainpipe).

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby speed » Thu Mar 10, 2016 5:40 pm

bruce wrote:Despite what people say, the A45 is one ugry car. A funny looking Benz with bits hanging off. Stock exhaust sounds horrible (echoey drainpipe).

And it's 85k!
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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby Tony » Thu Mar 10, 2016 5:50 pm

Dan wrote:If someone has the trap speed for a stock block turbo MX5 it'd be interesting to compare.


I don't wish to hijack Ron's thread, but I can offer some sort of comparison.

Power wise my SE is reasonably standard. The only changes of note are an AEM intake, an axle back exhaust with hot dog (rest of exhaust is standard) and an Adaptronic.

I had a before and after dyno run done when the Adaptronic was installed and it only picked up around 10 RWKW (still plenty of room to improve the tune I guess). What the Adaptronic did however was dramatically improve the driveability. It now has 146 RWKW.

At the Cootamundra airport as part of the Nulon Nationals in 2014, my best time was 13.7 sec @108.9 mph over the quarter. Not sure whether that's good or bad.
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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby Novice1 » Wed Mar 16, 2016 4:54 pm

Ok before and after figures. Disappointed with the dyno figures but not with the butt dyno.

To me car is considerably quicker

Other change in car went up from 205 to 215 size tyres.
Before 8.5-9 psi

Powe 214.6 hp @ 6500 rpm
Torque 433.6 NM @4833 rpm
Air density 98 percent
Correction factor 2.32 SAE J607
Air Temperature 24 degrees

After 11 psi

Power207.2 hp
Torque 419.4@ 5250 rpm
Air density 94.6 percent
Correction factor 5.59 SAE J607
Air temperature 30 degrees

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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby speed » Wed Mar 16, 2016 5:41 pm

So no more 6500 RPM?
Would have been good to compare but who cares about numbers, as long as you are happy with what you got for the money :)
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Re: Wanting quicker acceleration NC with cosworth Supercharg

Postby Novice1 » Wed Mar 16, 2016 6:12 pm

speed wrote:So no more 6500 RPM?
Would have been good to compare but who cares about numbers, as long as you are happy with what you got for the money :)


Sorry, yes 207.4 hp @ 6500 rpm

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