4age?

evel · Post by **evel** » Wed Dec 21, 2011 6:16 pm

SimJen wrote: An N/A 1.8-2 Litre could easily put out 200+hp with the right work and $$, more if you're willing to have a non streetable motor.

do u mean that stroking it out to 2.0 makes it a illegal motor or u could spend more to get more but it then becomes illegal?

Euen · Post by **Euen** » Wed Dec 21, 2011 6:31 pm

Not illegal, just very expensive. My engine is out to 1929cc which is about the limit without stroking. I'm getting about 140rwhp and it is reasonably streetable although I wouldn't like it as a daily driver. I could probably get a bit more but that would require a lot more $$

Trying to get big HP out of a normally aspirated 1.6 or 1.8 is very expensive.

Gravelben · Post by **Gravelben** » Wed Dec 21, 2011 6:31 pm

I think more that the tuning necessary for that power would make it somewhat less suitable for normal road driving - ie extreme cams giving big top-end power but not much low down, lumpy idle etc.

evel · Post by **evel** » Wed Dec 21, 2011 6:42 pm

Euen wrote: Trying to get big HP out of a normally aspirated 1.6 or 1.8 is very expensive.

but really u dont need big power in a 900kg car. i reckon saving up to a 3sge would be a quality investment. There aren't any 200hp+ motors that Mazda make apart from Rotors are their?

Donovan · Post by **Donovan** » Wed Dec 21, 2011 8:11 pm

r3spct wrote:The rotary option is difficult ive heard has the trans tunnel is too low and needs more clearance about box to raise the engine. v8 conversion needs a new front subframe.

The rotary conversion isn't the easiest if you are doing it for the first time, but there is a trick to it, and if you can find someone who has done it before, then it makes life a lot easier. Don at Autoways in Hamilton has done a conversion and I believe that he still has the car.

I have seen a couple of Lexus V8 conversion done without changing the subframe, one of them the whole conversion only cost him $8k apparently, and that included the cost of the car, but it is running the Lexus auto and he is a mechanic, so his labour was zip.

Gravelben · Post by **Gravelben** » Wed Dec 21, 2011 10:44 pm

evel wrote:There aren't any 200hp+ motors that Mazda make apart from Rotors are their?

KL-ZE 2.5 V6 is 200hp, KJ-ZEM 2.3 SC Miller-cycle V6 is 230 (but apparently doesn't fit in an MX5), I'm sure the newer MPS motors make more than that too!

SimJen · Post by **SimJen** » Thu Dec 22, 2011 7:40 am

2.3 Duratec would be the go from the Mazda 3's/6's.
Same motor as in the Caterham 7's makes big horsepower with not a lot of work, not exactly cheap to buy though so just stick with FI

Gravelben · Post by **Gravelben** » Thu Dec 22, 2011 8:20 am

Will be interesting to see what people are doing with the Mk3 over the next few years as I think thats basically a Duratec lump too

SimJen · Post by **SimJen** » Thu Dec 22, 2011 8:23 am

Caterham has some roller barrel throttles that liberate a ton of power along with headwork and cams. 270hp NA!

RMS · Post by **RMS** » Thu Dec 22, 2011 9:13 am

+1 on the turbo, I don't get the appeal of SC's but then I've never driven one.

evel · Post by **evel** » Thu Dec 22, 2011 9:43 pm

SimJen wrote:2.3 Duratec would be the go from the Mazda 3's/6's.
Same motor as in the Caterham 7's makes big horsepower with not a lot of work, not exactly cheap to buy though so just stick with FI

are the 2.3 Duratec turboed?

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