MY MK1 Supercharged MX5 (Eunos Roadster)

[HorneyMX5]

I paid £1250 for it as it is in the first pick on page 1. I've since spent about the same again on modding it over nearly 3 years.

[HorneyMX5]

Some video footage from yesterday's trackday: http://youtu.be/iANBxUYdaxY

[HorneyMX5]

Gaz Gold pro coilovers fitted, Mini supercharger kit arriving shortly.

[HorneyMX5]

Some new (phone) pics:


Untitled by Nicholas R Horne, on Flickr


Untitled by Nicholas R Horne, on Flickr


Untitled by Nicholas R Horne, on Flickr


Untitled by Nicholas R Horne, on Flickr

[HorneyMX5]

The roll bar is a Safety21 (Cusco) steel 4 point. It's very high and snug against the soft top, it now rubs due to the cage padding. With the Sparco seat and helmet on I would say it's about 4 cms above the top of my lid.

Edit: I'm approx 5'10"

[HorneyMX5]

Mini Supercharger fitted and working!

Thanks to Nick at Skuzzle Motorsport we are just about there. It runs, goes like the clappers, it pops, it bangs, it whines and it chirps. Sadly the injectors run out of head room at 6,000rpm despite being 1.8 Items so I'm sourcing some RX8 ones. Once they're in and another mapping session we should hopefully see the full use of the rev range as the limiter is currently set at 6,200.

[HorneyMX5]

Whine:

http://www.youtube.com/watch?v=qLudPbmEoMs&fea...

Flames:

http://www.youtube.com/watch?v=zZ7ixiyvI54&fea...

[HorneyMX5]

Now booked onto 2 AutoSolos in April to get those competitive juices flowing.

[HorneyMX5]

Did some tinkering today. IL Motorsport 40% increase stiffness front ARB links:



Fitted, no pics.

During fitting the charger I had to lose the coolant bottle so ordered a bag instead and fitted and wired that up today:



Next up bigger injectors and the first Autosolo of the year next weekend.

[HorneyMX5]

Also organized a breakfast meet this morning:

[HorneyMX5]

Another day of tinkering. Swapped out the 1.8 injectors for yellow RX8 ones and popped it on the Dyno for a retune:





And the results:



So a rough 190bhp at the flywheel which is a considerable gain over 115bhp at the fly they have as standard.

Now I've got the full use of the revs (was limited to 6200 on the old injectors due to leaning out) it is much, much quicker. Tomorrow is my first AutoSolo of the year so looking forward to trying it out in some competitive motorsport in it's new boosted guise.

[HorneyMX5]

Farnborough and District Motor CLub April AutoSolo done and dusted. I finished 13th overall, 5th in class and 3rd fastest in an mx5. Nick of Skuzzle Motorsport was also driving my car and came 9th overall, 4th in class and 2nd fastest in an mx5. He beat me by 10 seconds overall. Pretty chuffed and the car was brilliant all day. Nick even got a trophy. Vids to follow.

[HorneyMX5]

Lots of boring videos of me and Nick Bailey From Skuzzle Motorsport AutoSoloing the car. I should have mounted the GoPro Higher!


http://youtu.be/irdtbY2HPGA

http://youtu.be/bKlLDz7Njyo

http://youtu.be/R-canZzu2ts

http://youtu.be/3mBHaeCtssk

http://youtu.be/QlriUmFkb2Y

http://youtu.be/CVNyzDR9hEI

http://youtu.be/mXXk0u1_7kM

[HorneyMX5]

I was supposed to be competing in another AutoSolo tomorrow but the car has suffered a complete clutch release bearing failure. I initially thought it was hydrolic related but after changing the slave and master cylinders the problem wasn't improved and actually started getting worse. I knew fitting the charger would eventually kill the clutch but the clutch itself is still holding fine, just a poxy £12 bearing! Really gutted and I have a trackday booked on the 28th as well.

Now I need to decide what the hell to do. The box has to come off so now's the time to put a decent clutch and flywheel from Flyin' Miata in but I'm looking at the thick end of £500 plus labour as I don't have the facilities to be able to drop the box and spend a couple of days on it. So do I go for it and batter my credit or do I just replace it with a standard 1.8 setup saving myself lots of money but risk it not being up to the job for years to come? To make maters worse Flyin' Miata recommend 500 miles run in on their clutch with no full throttle. Not sure how I can get that shipped here, fitted and rack up 500 miles in 15 days!!!!!


Urrggghhh

[HorneyMX5]

I bit the bullet and ordered a Competition Clutch stage 4 paddle clutch and the Ultralight Flywheel combo for £585 delivered. Ouch!

Now to try and get it fited in time to run it in before the trackday on the 28th.

[HorneyMX5]

So, yeah, not the release bearing then:

Untitled by Nicholas R Horne, on Flickr

Killed that good and proper. The bolt heads have been mullered by the dpring as well. No wonder it was a pig to get a gear.

New Ultralight flywheel:

Untitled by Nicholas R Horne, on Flickr

I didn't get a picture of the 6 puk paddle clutch as we were in a hurry.

Massive thanks to Nick at Skuzzle Motorsport for working a late one last night to fit all this after I finished work. The man is a legend.

[HorneyMX5]

Trackday in 8 days, much to do.

The CC clutch is now bedding in nicely with loads of bite and having covered 200 miles I've started giving it some beans. Very impressed. With the lightened flywheel 1st and 2nd gear are now ballistic!

Today I change the box, diff and turret oil:

Untitled by Nicholas R Horne, on Flickr

Untitled by Nicholas R Horne, on Flickr

My to do list for next monday looks something like this:

• Fit Mocal oil cooler and Filter Sandwich plate

• Fit Oil temp take off sandwich plate with above

• Oil and Filter change

• Wheel alignment check and adjust

• Swap rear tyres left to right to even out wear

• Fit gauge pod

• Fit and wire up boost and oil temp gauges

• New plugs and leads

I also have an exhaust blow which I suspect has come from removing the echuast to change the clutch. If I get time I'll investigate this but it's pretty low down the priority list.

[HorneyMX5]

Big thanks to Javelin Trackdays for an excellent day at Castle Combe today. It was the first trackday since Skuzzle Motorsport assited with all things supercharger and fitted the Competition Clutch 6 puk and Flywheel. The car was epic, only let down but the sacks of meat behind the wheel. There's a few things now to patch up or improve and the next stop, back to Castle Combe on the 10th May for Japfest.

Anyway have a couple of fly by vids with my Dad at the wheels:

http://youtu.be/KufD0UmBHi0

http://youtu.be/NwFciDOiZLo

and some pics:







_DSC3559 by Nicholas R Horne, on Flickr

And a couple of flying laps:

http://youtu.be/q-uufOBQwSw

Edited by HorneyMX5 on Monday 28th April 23:09

[HorneyMX5]

Topbox said:

Any plans for oil pressure gauge? Is this running a standard sump?

Being an early import it has a fully functioning oil pressure gauge in the main clocks which is a result. Sump is standard although starting to think a baffled one might be a good idea at some point.

[HorneyMX5]

A few things to fix after the trackday.

1) Exhaust is now blowing like a trooper. It's blown the gasket out of the downpipe/decat flange. Booked in to an exhaust place on Tuesday morning. I hate trying to do exhausts myself.

2) I've got a suspension knock that's getting worse. I can't find anything wrong and it only happens under very heavy load on turn in. I suspect a worn wishbone bush somewhere, further investigation required.

3) Gearbox is sounding like a bag of spanner, not sure it's long for this world. One to keep an eye on.

4) One of the idler bearings for the charger belt is squealing. Replacements ordered as they look pretty old.

Japfest is this Saturday so decided it was time to give it a proper polish as the paint had gone really flat. Also the SPa Six Hours stickers really needed to be removed. I pulled them off and on the Satin black bonnet they left loads of marks so that got removed and rattle canned again. I also recently bought a front tow hook so that was sprayed up and fitted.

Untitled by Nicholas R Horne, on Flickr

Untitled by Nicholas R Horne, on Flickr

I've also put a roundel back on the bonnet as I had one spare form when I bought them last year.

Still a few jobs to do before next weekend like refit my yellow indicators which I've been meaning to do for ages and fit a dial cowl as I broke my old one trying to mod it for my Oil and Boost gauges.