Tuning direction dilemma
Discussion
The agreement with my better half when I got my 5 went thus: "fine, I'll sell my kit car that you hate, as long as I can tune the hell out of the Five...".
So,agreement made, I've been researching and planning upgrades - while the existing engine has done it's best to piss me right off. Head gasket, coils, now piston rings.
Plan had been to keep this engine going (I do a 100 mile a day commute) whilst waiting for a lovely chap named Bruce to finish renovating his house so he could supply me with a kit to swap in a Jag 3l v6.
However, in the last week I've been offered a lovely low mileage but same year engine for mine, which I'm going for as I'm really starting to think my current engine is doomed. I've also seen that TDR are very close to releasing what looks like the definitive rotrex kit, offering 230-240 bhp at the wheels...
So, do I just drop this new engine in temporarily, using it as an excuse to upgrade the cooling system (which I'll keep for the Jag engine), or go in a completely different direction (saving about 1-2k) and treat this engine real nice (manifold/intake/cops/ecu plus new rad and hoses) before bolting a rotrex into it in a couple of months?
I wanted three things: around 250bhp at the fly. Clean, crisp throttle response without big spikes in torque (hence turbo is not an option). Great soundtrack.
Seems the rotrex will give me two out of three, and a decently piped 4 pot doesn't sound that bad...
Thoughts?
So,agreement made, I've been researching and planning upgrades - while the existing engine has done it's best to piss me right off. Head gasket, coils, now piston rings.
Plan had been to keep this engine going (I do a 100 mile a day commute) whilst waiting for a lovely chap named Bruce to finish renovating his house so he could supply me with a kit to swap in a Jag 3l v6.
However, in the last week I've been offered a lovely low mileage but same year engine for mine, which I'm going for as I'm really starting to think my current engine is doomed. I've also seen that TDR are very close to releasing what looks like the definitive rotrex kit, offering 230-240 bhp at the wheels...
So, do I just drop this new engine in temporarily, using it as an excuse to upgrade the cooling system (which I'll keep for the Jag engine), or go in a completely different direction (saving about 1-2k) and treat this engine real nice (manifold/intake/cops/ecu plus new rad and hoses) before bolting a rotrex into it in a couple of months?
I wanted three things: around 250bhp at the fly. Clean, crisp throttle response without big spikes in torque (hence turbo is not an option). Great soundtrack.
Seems the rotrex will give me two out of three, and a decently piped 4 pot doesn't sound that bad...
Thoughts?
Goes by Rocketeer on Instagram, M-tech have a build thread for the prototype on Mx5nutz.
He doesn't post much, or do anything in the way of marketing - he's ready to do a 'refined prototype' kit and responds well to pms via Nutz.
Bill of materials includes absolutely everything to do the conversion, minus the engine itself. Not cheap though, could easily build a forged turbo setup for the same cash.
He doesn't post much, or do anything in the way of marketing - he's ready to do a 'refined prototype' kit and responds well to pms via Nutz.
Bill of materials includes absolutely everything to do the conversion, minus the engine itself. Not cheap though, could easily build a forged turbo setup for the same cash.
Cheers, turbo is definitely out. I've not driven a single turbo car that doesn't have what feels to me like a 'soft' accelerator. That includes modern hybrids, variable vane, etc.
The rotrex kit I'm thinking of is this one: http://trackdogracing.com/rotrex.aspx
They've been developing it for years, and it even includes bonnet props and airflow slam panel.
First customer installation here (he's an experienced Guinea pig, and his feedback will be taken on board for the imminent full release): http://forum.miata.net/vb/showthread.php?t=612364
I'd love a V8 conversion, but it involves chopping into the firewall, which is automatic IVA. No thanks.
The rotrex kit I'm thinking of is this one: http://trackdogracing.com/rotrex.aspx
They've been developing it for years, and it even includes bonnet props and airflow slam panel.
First customer installation here (he's an experienced Guinea pig, and his feedback will be taken on board for the imminent full release): http://forum.miata.net/vb/showthread.php?t=612364
I'd love a V8 conversion, but it involves chopping into the firewall, which is automatic IVA. No thanks.
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