Goose

Hi all, first post.

I ordered a Vel red 5speed manual with leather in March. After discussions with my dealer we decided that my money would be best spent on the above, as i'll be able to up the performance with an ECU upgrade to the high power levels some time in the future. After reading some posts on here however, i fear that may not be the case. Does anyone know if the UK 5/m comes with the same 4 ported unit as the US auto? I was told by the dealer here that the UK engines are the same, just tuned differently, but something tells me he is not correct.

And does anyone know of any other differences in spec (UK) between the two (apart from the xenons and 6speed)?

Many Thanks,

Goose.

Titanium Grey

Yes, the 5 speed only gets the 4 port engine.

You might get an extra 5-10% increase with an ECU, but you will never get the 239 HP of the hi power car.

However not sure if it has exactly the same tuning characteristics of the US auto model .

SA22C

I think that the 210 hp car with a manual will be faster than the slushbox anyhow, because you can crank the motor to 9k. I wonder how fast the 5/mt is? You'll have to do some trials when you get the car, we may all be surprised how fast it can get.

Goose

SA22C,

The 5 speed manual here is 190hp, and limited to 7500rpm! I am quite confused about the situation. I could get the rev limiter removed, but if the motor is the same as the US auto, this may not get me any more power? I really want to get those revs up to at least 9k, but if the 4 port motor (if that's what i get) gives up the ghost at 7.5k then i won't bother getting it. I'll have to forgoe the hide and get the 6 speed.

thanks

wakeech

the 5M model only comes with the base model engine: if you want power, turboless, you definitely need to upgrade to the 240hp 6M... there are no tertiary ("5th+6th") ports in the lo-power model engine: removing the rev limiter wouldn't do much, as it'd run out of breath well before the 7500rpm rev limit anyways.

BUT: one thing to take note of is that the 4 port design is far better as a forced-induction candidate... if you want those extra ponies, it MAY be better to get the cheaper 5M tranny and motor, then SC/TC it

MikeW

Speed at 7500 limit-using 4.3 axle ratio and 811 revs/mile
Gear, mph, kph
1, 37, 59.5
2, 64, 103
3, 87, 140
4, 129, 208
5, 169, 272
Reverse 39,63

Goose

Thanks for the feedback guys.


Do we know this is the case for certain? (4 port). Or is this assumption, based on the US auto?

It's a shame that Mazda didn't just produce the one engine, and detune it for the lesser models. Would surely have saved them some money, and me some frustration!

For the time it will take for the S/C or T/C kits to come out, and the likely price, including fitting and the requisite ECU, i think i can rule that out for the time being.

time to re-think my order.

wakeech

ask the UK guys to be certain, but the low-power base engine has only four ports, around the world.

RobDickinson

yeah UK low power version is 4 port.

Engine is prety much dead after 6200rpm.

looking at power graphs of other rotaries with sticking valves tq and pwr drop like a stone, it realy needs that extra breething up the rev band.

wakeech

...i'm still not sure that it's an entirely bad idea to get the base model car, and throw a blower on it (cheaper + easier than turbo: lower redline=friendlier to SC's)

MikeW

How is the engine dead @ 6000 if peak torque is at 5000 and max power is at 7000 rpms.

RobDickinson

Ooops my bad meant much past 7000.

Personaly I dont realy see the point in buying the power power version but each to their own.

wakeech

...if you mean low-power, then like i said: it's the cheapest model to buy, and the best candidate to go FI on the motor with...

MikeW

Yeah power is all downhill from 7200+ rpms, but even at 7500 it still making about 200 hp on the 207 hp (210ps) models, so it is time to upshift.

Maybe time to lengthen the intake ports? and delay the engagement of the second port 500 or so rpms if both ports are lengthened.

Goose

Well after some deliberation i'm sticking with my original order. This is down to 3 main reasons:

1) And this really pisses me off - if i change any detail of my order (and bear in mind my car probably won't be maunfactured until September) then i go to the back of the cue! October is long enough.

2) Can't really stretch to the High Power and leather (not too keen on the grey cloth seats). The insurance may well be higher also on this model.

3) I still think there should be some mileage in re-mapping this engine. As a minimum we should be able to up the power from 192ps to 210(US spec). And the manufacturers usually make a few compromises on their outpus anyway, for economy/emissions and warranty reasons. This 210ps 'should' go a little higher, at which point i think i'll be fairly happy. Especially as i'm not the biggest bloke around and my weight advantage is worth a few extra ponies over Joe Average!

Regarding the S/C, we'll wait and see. If any company would like to use my car as a mule then i'm all ears. But only if i get it for a very reasonable price!

wakeech

no no no no... turbo is the only way to go, please disregard any mention of a supercharger in my posts.

T U R B O.