2.0 Sport NC - struggling to like it!

2.0 Sport NC - struggling to like it!

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v9

Original Poster:

204 posts

49 months

Saturday 10th February
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Bought a cheap ‘08 NC last year as a runaround mostly for my wife. 70k miles and , whilst I do usually enjoy an MX5, this one seems a bit rubbish. It’s cosmetically good, little rust and has a good history.
There is constant vibration, worse under braking, feels like it needs the geometry sorting, the tyres are not great, and could do with replacing (cheap Evergreen brand I think) and the engine feels slightly hesitant, and uses rather a lot of fuel. MAF sensor maybe, spark plugs?
I’d personally sell it and buy a better one, but the wife loves it!
What do I look to first to sort this car out?
Also don’t like the spring rates, feels very wobbly!

Any thoughts? Not keen on spending big as it’s a cheap and fairly disposable car, but would like to get a more enjoyable car to drive round the local lanes.

v9

Original Poster:

204 posts

49 months

Sunday 11th February
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AdamR83 said:
Sounds like you would need to go down the route of...

New tyres and balancing
Alignment
Some less tired dampers
New thermostat (common to stick on these and causes all the symptoms you mention)

Probably not much change from a grand. Whether it's worth it is up to you!
Thanks for your response. Could you elaborate on the thermostat issue please? Does it stick? Open or closed? What are the symptoms?
Also, can you point me to where I could get your list done for under 4 figures? Seems very cheap!

v9

Original Poster:

204 posts

49 months

Sunday 11th February
quotequote all
AdamR83 said:
Thermostat sticks open - meaning the car never warms up fully and is in enrichment cycle all the time. More fuel used, reduced power / response.

Apologies for not being clear - I'm a DIYer and forget labour costs sometimes. And I'm up North, haha.

Alignment £120
2nd hand full set of Bilsteins with springs £150
Thermostat £30 (easy DIY)
Might as well change coolant too £15
Decent tyres £400

Labour if you want someone else to do the work... perhaps a couple of hundred?
I’m not averse to getting the spanners out, but only have outdoor space and my wife needs the car for work, so there’s pressure to get it all back together in time for Monday morning, which can make more involved jobs rather stressful.
What’s to say that second hand Bilsteins are any better than the ones that are on it? Are they easy to test off the car?
Also, without wanting to open a can of worms, what would constitute decent tyres? I usually use Michelin tyres, PS4S are good, but most people don’t seem to recommend them for Mx5? Often see Toyo and Kumho mentioned as good options - any thoughts?
I’ll have a look at the thermostat - thanks for your help!

v9

Original Poster:

204 posts

49 months

Sunday 11th February
quotequote all
Belle427 said:
May be worth doing tyres and geo and see how it goes, they are pretty sensitive to it.
Any suggestions as to good tyres to use?

v9

Original Poster:

204 posts

49 months

Sunday 11th February
quotequote all
Belle427 said:
Personally I'd always stick to premium if available such as Michelin, Goodyear.
You know exactly what your getting, the only reason people fit toyo etc in my opinion is cost which is fair enough.
Tbf though I put 4 toyo TR1 on an NA due to cost and availability and they felt ok.
Never really got on with any Goodyear tyres I’ve had, always seems to have a rather vague feel. Any specific suggestions as to particular tyres? As I said, I rate Pilot Sports but they are rarely mentioned in the threads I’ve looked at regarding MX5s - is there a reason why?

v9

Original Poster:

204 posts

49 months

Saturday 23rd March
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W12GT said:
If vibrating under braking then I’d be looking at disc and pad condition. I had this on my first 911 and it was a horrible experience.
Yep, almost certainly a warped disc or two on it. Going to MOT it before any big spending to see what that throws up. Haven’t had time to look over it properly but some decent rubber and a geo set up are also in order when I get a minute.
Interesting what folks have said about the thermostat. Temp doesn’t seem to vary once up to running temp so not sure that’s a problem, but worthy of further investigation. Does feel like something is not quite right in the engine dept. Can’t quite put my finger on it.