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Author: Subject: 2004 MK Indy Busa Project
Proby

posted on 20/3/12 at 06:30 PM Reply With Quote
Lookin good! iPhone mic sounds a good idea!
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afj

posted on 20/3/12 at 06:48 PM Reply With Quote
Diffuser looking great, just need a splitter at the front next





eerrrrrrrrrrrrrrrr

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yellowcab

posted on 20/3/12 at 07:52 PM Reply With Quote
iPhone mic behind the dash completely exposed was still too distorted from engine & exhaust tone, so I cut some roll cage padding up, and wrapped that around it to make a muffler for it, reduced it loads but still distorts under hard-loud-pedal

Next up, is to cut our kitchen sponge up (don't tell the wife) and stick the mini-mic in the centre of that...

One thing I really dislike about trackday/race/car videos is distortion and wind noise lol






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yellowcab

posted on 20/3/12 at 07:54 PM Reply With Quote
AFJ, good shout, there is already an alloy plate under the engine, but only held on with cable ties, so will be making a front splitter too.

Not fussed about it having louvres in, as I have the wide fin/ wings to aid engine bay cooling to keep engine air temps ambient






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yellowcab

posted on 25/3/12 at 08:14 PM Reply With Quote
still battling with a horrid distortion from exhaust drone...

http://www.youtube.com/watch?v=d1nArJg2p-I&feature=plcp&context=C49fe7e6VDvjVQa1PpcFMYEPmjO7dsRaWLWeieKQWg2sc7EBZokn4%3D






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Proby

posted on 25/3/12 at 08:32 PM Reply With Quote
Was that mini mic with or without the wife's washing up sponge?
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yellowcab

posted on 25/3/12 at 08:38 PM Reply With Quote
I kid you not... the mic has roll cage padding taped round it, then a bathroom sponge taped around it, then stuffed in a jewellery ring box, taped up, then another bathroom sponge taped around it, and then in a carrier bag to keep it waterproof, and tape around it... I think its just a sh*t mic lol

Oh and I've moved it from behind the dash as I thought it was too close to the engine, now to behind the passenger seat, to which I now thing its too exhaust droney... so I'll move it again to behind the under the drivers seat I think...






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yellowcab

posted on 28/3/12 at 11:19 AM Reply With Quote
Removed, repacked and refitted exhaust to try and get it a little more quiet - whether its worked or not I don't know, maybe a larger longer can would have been a better alternative, as this can is only 20inches x 4.5inches, and I think a new 22inch x 6inch would have done a better job

Hey ho...

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Took delivery of my new carbon aeroscreen today - any tips on how to fit it neatly?

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A1

posted on 28/3/12 at 12:16 PM Reply With Quote
measure up from the scuttle/side panel line on each side then tape in place, fix it on one side then do the other.
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yellowcab

posted on 28/3/12 at 12:51 PM Reply With Quote
Ahhh nice one... didn't really think about it but my scuttle is stepped, but it doesn't matter come to think about it.

I've taped it on and sat in the car to see if any visibility is reduced and it's pretty perfect! My drivers seat is really low down you see.

Had to remove my mirrors and then I'll plonk them back ontop othe sides of the screen






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yellowcab

posted on 30/3/12 at 06:16 PM Reply With Quote
so on with the carbon aeroscreen that I purchased from Aerodynamix...
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Removal of the old home made perspex one which has served its job very well!
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It was a stepped scuttle type one
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As per above advice, I taped it down to begin with to get angles and measurements
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Rivetted on, following the curvature of the car
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Didn't like the silver, didn't fit in with the colour scheme, so coloured the rivets black
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All done
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Very happy with my purchase - outstanding service from Julian @ Aerodynamix too






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yellowcab

posted on 30/3/12 at 06:18 PM Reply With Quote
today we fitted the diffuser, and was very happy to see it weighing in lighter than some others, at 3.65kgs
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this is just the prototype riveted version for now, will be sold one once the final templates are made
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arse end up in the air, diffuser slid underneath
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like for like comparison, open rear diff, and rear clam acting as a parachute
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gloss black diffuser on, attached the the existing floor, and rear clam
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Exits the car by 25mm, and rounded edges
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Grrr
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All done - now onto the next task






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Coopz

posted on 1/4/12 at 05:31 AM Reply With Quote
The carbon screen looks great... Fits really well on the MK Scuttle. Your car also looks superb keep the updates coming
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yellowcab

posted on 1/4/12 at 10:36 AM Reply With Quote
Thanks Coopz, yeah very happy with the fitment on the screen considering they're not 'specifically' MK...

I'll keep the photos coming, don't worry

[Edited on 1/4/12 by yellowcab]






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yellowcab

posted on 12/4/12 at 04:36 PM Reply With Quote
Set about making more aerodynamic changes to the car, so decided to look at the front of the car...

As it sits, completely open to the underside of the Busa lump
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It's going to protrude the front of the underside of the nosecone by 50mm, and 60mm wider at either side (the shape isn't exact, it will be rounded to suit the lines)
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Jacked the car up to ensure front arms at full droop will clear even when air-born
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The kick out/ change of angle - will not be a right angle, either rounded or smooth
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The sides follow the lines of the wider gills at the side of the engine bay
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Where the sump of the Busa engine hangs down, rather than boxing it off, I'll make an upside down alloy bonnet scoop facing backwards for better aerodynamics and for hot air to escape if need be
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Going to make it from 1.5mm alloy to keep the weight down

[Edited on 12/4/12 by yellowcab]

[Edited on 12/4/12 by yellowcab]






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Nick DV

posted on 12/4/12 at 06:13 PM Reply With Quote
Are the marks on the bottom of the sump due to it hitting the ground? If it is, I'd include a skid plate when you sort out the aero aids!

Cheers, Nick





"The force will be with you, always!"

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yellowcab

posted on 12/4/12 at 07:22 PM Reply With Quote
Yep, there isn't much of the sump left lol - I will be looking for a new one in due course lol

Also, thats the main reason for the splitter, the aero benefits was secondary...

[Edited on 12/4/12 by yellowcab]






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chris_harris_

posted on 13/4/12 at 12:23 PM Reply With Quote
Very nice looking car. I like the mods.

What have you fixed the Aeroscreen to the scuttle with. Have you used tinnerman washers, as this was what i was thinking of doing, with countersunk screws?

Chris





Regards Chris

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yellowcab

posted on 13/4/12 at 12:23 PM Reply With Quote
MOT complete, passed with no advisories!






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yellowcab

posted on 13/4/12 at 12:32 PM Reply With Quote
Hiya Chris,

I decided to use standard 4mm stainless rivets with washers underneath them to spread the load so to speak to prevent any cracking,

Let me know what you decide to use.






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andrewmorpeth

posted on 13/4/12 at 12:41 PM Reply With Quote
are you running a dry sump system or standard?what diff have you got?thanks
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yellowcab

posted on 13/4/12 at 12:53 PM Reply With Quote
Running a standard wet sump, and the rear diff is a LSD standard unit with 3.14 fd






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andrewmorpeth

posted on 13/4/12 at 01:00 PM Reply With Quote
ive just changed my diff from sierra 3.14 to a bmw 2.35 out of a 2000 320d had to change propshaft and drive shafts but what a difference!it will do 70mph in first now!still pulls away ok and car is now more driveable on road.have you had any problems with oil surge?what size oil cooler are you using?
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yellowcab

posted on 13/4/12 at 01:14 PM Reply With Quote
not had any problems as yet - but will be investing in an acusump system certainly lol

here is a quick shot i took when i had run out of fuel again lol

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andrewmorpeth

posted on 13/4/12 at 01:19 PM Reply With Quote
looks nice!have you done any trackdays yet?
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