Getting a whining sound. Have I blown my engine?

Discussion regarding Turbocharged and supercharged MX-5s

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zombie
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Getting a whining sound. Have I blown my engine?

Postby zombie » Fri Jan 21, 2011 1:13 am

Yes, yes I have. Because every hairdresser's car needs a Blower. :mrgreen:

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Videos to follow.. :D


(No, I have NOT been waiting 11 months to post this.. Why do you ask? :P )
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Re: Getting a whining sound. Have I blown my engine?

Postby Benny » Fri Jan 21, 2011 1:15 pm

Who's a lucky boy then?

Like to know how it goes..........................
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Re: Getting a whining sound. Have I blown my engine?

Postby deviant » Fri Jan 21, 2011 1:53 pm

Taking it to the March sprint?

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Re: Getting a whining sound. Have I blown my engine?

Postby RG.net » Fri Jan 21, 2011 2:00 pm

Awesome!
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Re: Getting a whining sound. Have I blown my engine?

Postby DaveWA » Fri Jan 21, 2011 2:41 pm

well done matt

look forward to seeing it.

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Re: Getting a whining sound. Have I blown my engine?

Postby Jeo » Fri Jan 21, 2011 2:45 pm

Oh snap!

Any chance of a video to let us hear it?

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Re: Getting a whining sound. Have I blown my engine?

Postby RobH » Fri Jan 21, 2011 2:48 pm

Now your'e talkin' 8)

Power figures?

Love to know how it drives.
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Re: Getting a whining sound. Have I blown my engine?

Postby sliq » Fri Jan 21, 2011 3:00 pm

whoa
i can't brain today.. i have the dumb..

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Re: Getting a whining sound. Have I blown my engine?

Postby zombie » Sun Jan 23, 2011 6:45 pm

Edit: video has been deleted as it was crap :oops: Much better video lives here




As you can hear, the car doesn't always idle properly - initially it'll hunt between 800rpm and 1500rpm, then it'll settle down and fluctuate between 1000 and 1200.
This is mostly as a result of the lumpy cams - Brian Goodwin had the same problem, and I'm not sure I want to go for his old-school solution of drilling holes in the throttle butterfly :shock: - it's not too bad so I think I can live with it :D

Also, you can hear the serpentine belt squeaking away in the background. It's not the original Gates belt as that broke a couple of weeks ago and I had trouble sourcing a replacement. I will order a proper Gates one.

I'm still running in the new engine so am limited to 3800rpm and not using more than around 50% throttle, so I expect that lovely supercharger whine to get even louder.. Stand by for further updates :mrgreen:

To answer the other questions in the thread - I won't know what power it makes until I've finished running in the engine and take the car back for its final tune.

Yes the plan is to have it ready for the Sprint and Autotest in March.

Initial driving impressions - The car now has a boatload of torque down low, even at half throttle the 3800rpm limiter comes up very quickly.

Also, as I was afraid of the combination of supercharger plus 4-1 headers plus open midpipe plus trust exhaust makes for a very LOUD combination, so I can see a resonator being added back in soon...
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Re: Getting a whining sound. Have I blown my engine?

Postby duggan_nugget » Thu Feb 03, 2011 5:01 pm

Looks great!

Total cost inc. cosworth internals, shipping, duties, tuning etc?

Also, what tuning method are you using? Xedy/Sniper or DP/Moto East?

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Re: Getting a whining sound. Have I blown my engine?

Postby zombie » Fri Feb 04, 2011 3:03 am

Thanks!

I don't know the total cost, I dare not add it all up :shock:

Am running an Adaptronic ECU.
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Re: Getting a whining sound. Have I blown my engine?

Postby zombie » Wed Feb 16, 2011 1:45 am

RobH wrote:Power figures?

Love to know how it drives.

Initial dyno results are in:

200hp @ 10psi - a little more tuning to be done.

And I finally get to rev past 3800rpm. Driving impressions? Hell! Yes! :mrgreen: This is how it should have come from the factory.

And am loving the whine of the supercharger on full song. More videos to come!

- Matt
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Re: Getting a whining sound. Have I blown my engine?

Postby Charlie Brown » Wed Feb 16, 2011 8:41 am

There's one very jealous person sitting here after reading the post above.

:mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen:

Well done Matt, I know you’ll enjoy the beast. 8)
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Re: Getting a whining sound. Have I blown my engine?

Postby NitroDann » Sat Feb 19, 2011 7:43 pm

Not to be flaming but... I hope you didnt spend bucketloads to get 200 atw.

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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: Getting a whining sound. Have I blown my engine?

Postby NitroDann » Sat Feb 19, 2011 7:45 pm

Ok graph looks awesome, torque curve like still water..

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speed wrote:If I was to do it again, I wouldn't even consider the supercharger.


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