barefootskater said:
kdze or whatever they're called. The baby v6 from the mx6/probe. Or a boosted duratec, though it's so close to the Miata engine it may make no difference.
Saw one of these the other day. Mounted longitudinally, with a turbo, powering a first gen RX7. It made me feel all sorts of giddy. SSM car for sale out in Washington state area.
And just so someone shows some love for it. The Zoomboni is basically an Exocet built by volunteers in a shed. Powered by a 5.0 it has near perfect 50/50 weight distribution.....the key is to move the motor back. Waaay back.
And use a sufficiently short driveshaft to make it happen.
I'd call it more of a Locost than an Exocet. An Exocet is a very specific implementation of a homebuilt, one that replaces the unibody with a space frame that has big arcing tubes and is sold by a certain company (or pair of companies). A Locost is "if you squint it's kinda like a Lotus Seven" that takes drivetrain parts from one or more donors and has a fully fabricated suspension at one end at minimum.
Driven5
UltraDork
8/28/20 10:02 a.m.
accordionfolder said:
In reply to Driven5 :
Why bother with the ecotec if your aim is <300? Over 300 and you're on borrowed time for a 6speed Exocet or not.
Sorry, I should have been more explicit. I was referencing your preceding post praising the LFX for being a complete drivetrain swap rather than reusing what the Exocet already has from the Miata, and the KMiata for being borderline on the Miata transmission. In addition to KMiata, I'm also speaking to the other stock Miata trans swaps like the N/A Ecotec and (more specifically) the othwerise similar JV6 for a lower cost/complexity install.
With a 35% weight reduction, the the benefit to the LFX having an overbuilt transmission is reduced enough to make the additional cost not worth it to me personally...But I'd also probably be ok with the JV6 in the full weight Miata as well anyway, so also likely not the right answer for everybody.
In reply to Driven5 :
Gotcha. Let's be real - any of these would be stupid fun. My exocet was stupid fun with the 1.6 n/a in it before I went supercharged.
http://exomotive.com/lfx-v6-exocet-race-gets-a-new-aim-mxp-digital-dash/
I don't have this issue, is this article in digital form yet? Relevant to the discussion.
Another vote for a nicely ported rotary
In reply to amg_rx7 (Forum Supporter) :
Rotary would fit well because exocets cool REALLY well, since they're 90% holes. I'm not sure if anyone's actually made one though.
If it were a rotary, I'd want street port or milder. Fun ports do not like being lightly loaded unless you enjoy finding all the lash in the drivetrain. One could run a really heavy flywheel, to keep the drivetrain from getting beat up when the engine is stuttering, but that would be like putting on hiking boots to do the 100 meter dash.
Or you could do what I used to do and shift in and out of neutral every few seconds to accelerate and coast.
Do Exocets retain the Miata crossmember? It seems to me that would be a huge hurdle, it's really narrow where rotaries are wide.
In reply to Pete. (l33t FS) :
http://exomotive.com/store/exocet-mount-less-front-subframe/
Might be wide enough, I don't know rotary's!
In reply to accordionfolder :
The engine itself is something like 16" wide, but you need about 10 inches next to it, below crank centerline, for exhaust clearance. More if you want GOOD headers with a 4" straight shot before starting to curve back. This is why RX-7 engine bays swallow V8s with ease, and even Subaru engines fit.
I'd like to say the chassis rails are 4" wider than Miata but don't hold me to that.
accordionfolder said:
In reply to wspohn :
The ecotec has the problem, so far as I'm aware - of transmissions that could deal with that power in a miata bolt in swap, right? Big power BP motors are using BMW transmissions at this point if you don't simply enjoy replacing transmissions.
If you go for big power in a front engined format you just convert to a Tremec 5 or 6 speed, but the stock Aisin AR5 seems to take V8 transplants quite well.
