Vk304s Mazda rx7 s4 discussion thread

[Vk304]

Id have to do something with the intake as the ports are different?

[440bbm]

Yes inlet Manis are different and they're also more expensive. Fc plates are fine for what you are doing with them.

Well capable of 5-800 hp reliably with just  decent stagey. 

Unless u can get FD parts cheap - good luck with that lol

Greens are about 2900 for a set of new plates then u can have them cnc ported for not alot more.  If everything else u have is good then sweet, job done

[shizzl]

There’s a few decent FC plates on the yard at the moment. 

[rotormotor]

My engine builder has S6 rear and middle irons extended ported for $350 each.

But yeah, if keen using FC manifold then be issues.

[Vk304]

11 hours ago, shizzl said:

There’s a few decent FC plates on the yard at the moment. 

The yard?

[Nominal]

38 minutes ago, Vk304 said:

The yard?

E.g. 

https://www.trademe.co.nz/4672534072

[Vk304]

Gotcha

[kiwi808]

FC plates work perfectly if you are just building a street car. Besides who needs FD irons in an FC. It’s like those guys how stick Chevy motors into Ford’s because they think it’s more reliable. Who the hell builds a rotary for reliability?

[shizzl]

2 hours ago, Vk304 said:

The yard?

Trademe.  Fkn iPhone keeps changing words like a politician

[Vk304]

4 hours ago, kiwi808 said:

FC plates work perfectly if you are just building a street car. Besides who needs FD irons in an FC. It’s like those guys how stick Chevy motors into Ford’s because they think it’s more reliable. Who the hell builds a rotary for reliability?

Hahaha yea im just exploring options, give it a good chance to last more then 5000km, though who knows what this motor really went through before i had it

[vk327]

prob be best to  get the microtech hooked up to  a laptop and have a look at accel enrichment & injector/timing split before ya write off the microtech Gav at HPR is a bit of a wizard on them. I have had a run lately of bad microtech x4 igniters, have been deleteing them and going to ign1a coils.  if ya do decide to go link let me know il  sus you  a good price and can sort repin of your existing loom

although judging from that amount of tape usually means the loom will be hiding some gremlins, if its one thing iv learnt wiring modified rotaries,  they  are the top of the table for home job twist n tape & bad soldering   

[Vk304]

Yea 1st in going to trace wires around and fix anything, funny the car ran fine untill it got warmer and same thing, now does it every start, goes lean and pops like its lean free revving, wont be driving it at all, cheers for the info, will definitely keep that in mind and good to get advice man ! 

[vk327]

Gav had it fired up all good on friday arvo sound healthy, I sorted out ya fan not working,  (wires 87  & 30 were backwards on the relay) think he was gonna bolt it up to the dyno today,  with the new LT10c you  can wire in CAN from the wideband to the ecu if you  want to  setup  fuel trim or just log it, are you gonna do  anything for that god awful fuel pump whining away in the cabin?

[Vk304]

Haha diddnt realise you were there, i turned up later and stayed to try and sort out some bits, yea i can do something about that, i asked him to setup 2step as well lol ill tidy the whole thing up when its running good, yea relay was my bad, good guy ay 

 

[Raizer]

2 hours ago, Vk304 said:

the new x4 box that came with the ecu somehow was faulty and that got replaced with the old x4 box. 

Keep a spare known good one or two in the glove box, they've been pretty shit for as long as they've existed.

[rotormotor]

Very interested in the 2 step option and how that allsorts out.

[Vk304]

On 31/12/2024 at 19:18, rotormotor said:

Very interested in the 2 step option and how that allsorts out.

I'm hesitant to use that, the final tune I could do it off the handbrake switch through a relay, but it's not great for the engine and will probably break stuff if it's used at full power, I think ill add it just to have the option but will see. . . 

[rotormotor]

Yeah, Did a bit of googling, seeing as drag racing and burnouts not my thing I thought it be cool extra thing that I'd not abuse.

My engine builder asked " are you going to drag race it" and gave the vibe that he not be happy I risk anything to my new engine so shelved  the idea.

[440bbm]

7 hours ago, rotormotor said:

Yeah, Did a bit of googling, seeing as drag racing and burnouts not my thing I thought it be cool extra thing that I'd not abuse.

My engine builder asked " are you going to drag race it" and gave the vibe that he not be happy I risk anything to my new engine so shelved  the idea.

as if any other thing most rotors do isnt any worse than racing it... ?! lol Facepalm haha

[mjrstar]

I had an exhaust certificate on my old evo, in addition to the paperwork which has a drawing / description you are supposed to carry in the car, there was identification thing which was attached to the exhaust adjacent to the exhaust tip.

This was a few years ago now.