Most hardcore mk2/2.5?
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Discussion

Chris71

Original Poster:

21,548 posts

265 months

Friday 20th August 2010
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What's the most driver-focused mk2?

Prompted by a spot of window shopping where I noticed a mk2 RS-Ltd. I had an original RS-Ltd and I know there were about a million other special edition mk1s, but I didn't realise they did any 'go-faster' mk2s.

I've never driven a mk2, but I've heard they're a tiny bit less focused, yet somewhat more refined... Can you get a special edition with the refinement of the mk2 and the driver appeal of the mk1?

I do quite like the idea of a mk2 RS daily driver. And a supercharger.

RDE

5,031 posts

237 months

Saturday 21st August 2010
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Yep, you can get a Mk2 RS but they are all imports. Standard 1.8 output, but with Bilstein dampers, 6 speed box, LSD, front upper strut brace and some talk of higher redline/ lighter flywheel, but i'm not sure if that's definite or just rumour. No lovely Recaros like the original RS though frown

I don't think they were a limited edition like the Mk1, it just seems to be a level of trim for JDM models, rather than being a special edition as such. I stand to be corrected, but i'm under the impression that the UKDM Mk2.5 S-VT Sports had nearly all of the same equipment.

The UK 10AE had all the same equipment as the RS AFAIK and came in a great colour too.

Edited by RDE on Saturday 21st August 13:53

LukeBird

17,170 posts

232 months

Saturday 21st August 2010
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RDE said:
Yep, you can get a Mk2 RS but they are all imports. Standard 1.8 output, but with Bilstein dampers, 6 speed box, LSD, front upper strut brace and some talk of higher redline/ lighter flywheel, but i'm not sure if that's definite or just rumour. No lovely Recaros like the original RS though frown
I think the lighter flywheel and higher rev limiter (7500RPM I believe) are confirmed, it's just whether anything else was done to the engine to get to the claimed 160bhp...

RDE said:
I stand to be corrected, but i'm under the impression that the UKDM Mk2.5 S-VT Sports had nearly all of the same equipment.
Yeah, I think that's the case.
Mine has Bilsteins, 6 speed 'box & the Torsen LSD. smile

Would love a go in a Mk2.5 RS to see how it compares to my UK car.

Chris71

Original Poster:

21,548 posts

265 months

Saturday 21st August 2010
quotequote all
What's the Torsen/viscous division on the later cars? Also, what's the VED like on the mk2.5s - would it be worth keeping an eye out for an early mk2 (pre-CO2 tax bands?)

Do quite like the idea of having a 'jump in and go' sports car again. Done the mk1 MX5 and not sure I can justify the cost of a mk3.5, so that really leaves the 2s and 2.5s.

RDE

5,031 posts

237 months

Saturday 21st August 2010
quotequote all
The Mk2 RS's all make 140bhp as far as I know. I've been looking for a decent one at a reasonable price for a while, and have noticed a fair few advertised as having 160bhp, which people on mx5nutz.com assure me is just plain lies.

I believe the error happens because there was a Mk2.5 RS with 160bhp, but that doesn't get imported to the UK for some legal or certification issue, or so I understand it.

LukeBird

17,170 posts

232 months

Sunday 22nd August 2010
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Chris71 said:
Also, what's the VED like on the mk2.5s - would it be worth keeping an eye out for an early mk2 (pre-CO2 tax bands?)
High. £215 last time around. I think it's £245 next time...
RDE said:
The Mk2 RS's all make 140bhp as far as I know. I've been looking for a decent one at a reasonable price for a while, and have noticed a fair few advertised as having 160bhp, which people on mx5nutz.com assure me is just plain lies.

I believe the error happens because there was a Mk2.5 RS with 160bhp, but that doesn't get imported to the UK for some legal or certification issue, or so I understand it.
I thought the UK Mk2.5 is quoted at 146bhp, or slightly higher for other markets...
Given the 2.5 RS is import only, surely 160bhp is the magic number! wink

O/T you need one Rich! driving

RDE

5,031 posts

237 months

Sunday 22nd August 2010
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I am on the lookout. Went to see a pre-facelift RS recently but the paperwork was a bit dodgy and there were a few things under the bonnet that made me question if it had been looked after mechanically.

BCA

8,651 posts

280 months

Sunday 22nd August 2010
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160bhp? Doubt it. Maybe 145-150, max. Only difference is a higher rev limit, a lighter flywheel and different exhaust cams IIRC.

160 would be perfect though... hmm.

MX-5 Lazza

7,954 posts

242 months

Sunday 22nd August 2010
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Mk1 & Mk2 RS both have standard power (Mk1 130bhp Mk2 138bhp). Mk2.5 has 146bhp and Mk2.5 RS is supposed to have 160ps which is a bit under 160bhp.
Personally I'd just go for any 1.8 Mk2/2.5 and replace the suspension with something better.

Edited by MX-5 Lazza on Sunday 22 August 22:23

thewildblue

351 posts

196 months

Monday 23rd August 2010
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From what I read the MK2 RS has 145bhp and the MK 2.5 RS has 160bhp. My MK2 RS seems to fly anyway.

MX-5 Lazza

7,954 posts

242 months

Monday 23rd August 2010
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There is always a lot of confusion with the various RS models but as far as I'm aware only the Mk2.5 version had more power and I don't think that has been verified on a dyno.
To me the ultimate Mk2+ model is the UK Mk2 Sport which was a limited edition Mk2 in no way related to the Mk2.5 Sport which is just the Mk2.5 top model equivalent to the Mk1/2 1.8iS.

RDE

5,031 posts

237 months

Monday 23rd August 2010
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I thought the Mk2 Sport was a 1.8iS with a load of extras as standard (e.g. chrome bars, air con, front fogs, two tone leather, hard top, side skirts, boot and chin spoiler), but mechanically no different. Is that not the case?

MX-5 Lazza

7,954 posts

242 months

Monday 23rd August 2010
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Basically yes. Doesn't really matter though as I'd swap suspension for something decent anyway and I do like to have all the gadgets & gizmos smile

youngsyr

14,742 posts

215 months

Monday 23rd August 2010
quotequote all
BCA said:
160bhp? Doubt it. Maybe 145-150, max. Only difference is a higher rev limit, a lighter flywheel and different exhaust cams IIRC.

160 would be perfect though... hmm.
It's the inlet camshaft that is supposedly different on some models, I believe - my UKDM Mk2 10 AE has the BP5A inlet camshaft as opposed to the BP4W that I'm led to believe is fitted to "normal" Mk2s. It's supposed to be good for around 6 bhp.

I'm wondering what other differences there are between a Mk2 RS and Mk2 10 AE, my 10AE pulls noticeably harder with a sharper engine than a 1.8iS I drove, but that was a bit of a dog even though my 10AE has significantly more miles on the clock.

The performance bits that the 10AE has over the 1.8iS are as follows, as far as I can tell:

- BP5Z ECU
- BP5A inlet cam
- Front strut tower brace
- 6 speed box
- Bilstein shocks
- [reshaped airbox scoop with moveable collar and BP5W code on it - not checked this against others though]

The 10AE redlines at 7,000 rpm on the dial, with a 7,300 rpm indicated limiter, which I believe is 6,900 rpm actual and is the same as the standard Mk 2.

I've seen pictures of the Mk 2 RS speedo which shows a 7,500 rpm redline.

I'm unsure about the flywheel on the 10AE, as I haven't really tried to compare it to others. The revs don't seem to drop overly quickly, but then my other car has a very light flywheel that requires a blip of the throttle when changing up if you're not quick.



MX-5 Lazza

7,954 posts

242 months

Monday 23rd August 2010
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As far as I'm aware the 10AE has a completely standard Mk2 engine & flywheel. I've never heard anyone suggest it had any more power than other Mk2s. It does have the 6-speed gearbox though so that might make it feel a little sharper.

Chris71

Original Poster:

21,548 posts

265 months

Monday 23rd August 2010
quotequote all
I'm really quite confused now. wobble

Let me approach this from the other direction. Taking standard 1.8s as a point of reference, how does then mk1 compare to the mk2? Is the anecdotal suggestion of more refinement, but a little less driver focus fair?

MX-5 Lazza

7,954 posts

242 months

Monday 23rd August 2010
quotequote all
Although that is what is always suggested it's not really fair. The Mk2 is indeed more refined than the Mk1 and the Mk1 does initially feel a bit sharper than the Mk2 but that doesn't really make it any more focused. The Mk2 will turn-in just as quick as the Mk1 but does it with less fuss. The fact is that the Mk2+ has better suspension set-up and stiffer chassis which allows the suspension to be a touch softer without losing body control and the result is an improved ride without compromising handling.

Andy_742

77 posts

227 months

Monday 23rd August 2010
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I've got a mk2 rs and the redline isn't until 7500 rpm and that's were the rev limiter cuts in.... I hit it regularly smile

snotrag

15,496 posts

234 months

Monday 23rd August 2010
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MX-5 Lazza

7,954 posts

242 months

Monday 23rd August 2010
quotequote all
The real problem with all JDM specials is that there is very little info available on any of them over here that can be verified & trusted. So it looks like Mk2 RS has a higher rev limit so probably has a lighter flywheel & probably different intake cam & ecu so could well have a bit more power. Won't be 160bhp though, that's the Mk2.5 (and I think that's 160ps).