Coils

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RobinPZ72
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Re: Coils

Post by RobinPZ72 »

Hey Dave does that seafoam work?

Most components sadly fail due to human error!
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Re: Coils

Post by warpc0il »

I used Seafoam to clean/clear my oil injectors when I was fitting my SOHN adaptor and it certainly worked for that.
I also left a used set of plugs nose down in half a jam jar of Seafoam, with the lid on to stop it evaporating, and they came out looking a lot cleaner, after a couple of weeks.

However, I wouldn't advocate "the Seafoam treatment" for the engine, unless you had very low compression and it was the last gasp before committing to a rebuild.
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Re: Coils

Post by RobinPZ72 »

Yeah would go down that road either as I've seen what was a perfectly working engine kill it's self after words! I think if it was a day one treatment cycle it could be an aavantage, but run in motors tend to have crap keeping it tolerances!

Mostly I want it for cleaning components after strip down and the oil routes before work on flow routes etc.
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Re: Coils

Post by RobinPZ72 »

http://www.brisk.eu/catalogues/spark-plugs

Also just watched the Essex Rotary bid and its great to hear that they say Mazda designed the NGK plugs this way for a reason. Therefore maybe the tried and tested components are best!
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Re: Coils

Post by New Duke »

I mean you're never gonna get dirt cheap plugs for the RX8 given the market price of Iridium.

There's also availability. Given that we're in the comparatively small UK market the local choice is going to be limited compared to the US for example. Some of those plugs you linked above are cheaper, but ship them internationally and you're quickly approaching the £70ish I just paid jp4mance for a trusted NGK set, especially if Royal Mail decide to slap a handling fee on there and I've gotta drive an hour to the sorting office and back.
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Re: Coils

Post by New Duke »

Also, the (badly) molded piece of plastic tat made by Racing Beat I just received for Xmas made me realise what good value our coils and plugs are in comparison!

And some cheaper brand makes like Toyosports for that matter; also excellent value.
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Re: Coils

Post by RobinPZ72 »

What plastic Tat are you referring too?

Hey these are just other options on plugs and coils and in no way any suggestions of buys these cause there better as none of us know!

Hey have we spoke about mapping on this thread yet?

http://www.rotarymotion.net/guides/can- ... ap-an-rx8/
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Re: Coils

Post by New Duke »

I was talking about the RB Ram Air Duct. Poorly made and a massive rip off for what it is. I'm disappointed considering the rep they have. Not to mention the state that it was shipped in (bought new from MRP). Below is the box: too small with a hole in it, there's absolutely no insulation around the part or in the box so the part is 'loose'. Plus the fixing brackets were in a bag left loose inside the part, so the interior (airflow) surface is scored to hell. I'll be posting pics on the Facebook groups soon, but needless to say that's the last time I'll be buying from Mazda Rotary Parts or RB. I usually get family/friends to buy me gifts from MRP but no more.
(Sorry for the deviation but you did ask!)
DSC_0985.JPG
RobinPZ72 wrote:
Wed Dec 26, 2018 10:52 pm
Hey have we spoke about mapping on this thread yet?

http://www.rotarymotion.net/guides/can- ... ap-an-rx8/
I'd agree with the general thrust of that link. Carl from RRP who posts in this thread is, in my opinion, the leading guru of RX8 mapping.

My recently formed opinion is that all RX8 setups are different after a few owners and miles, and that some engines will then benefit more from mapping than others. Maybe part of that is adapting to age or modifications to get closer to the power that the car originally had. With the map my car had done RRP were very honest upfront about what to expect. The main result of my engine mapping was a nice smooth power curve where it had previously been lumpy. That made it easier and more predictable to drive on track. So for my use case a massive difference.

Others have stated modest power gains but maybe some of that perceived due to a smoother power curve. Maybe only the engine tuners will have enough collated data to have a sample size big enough to draw conclusions. I dunno. Individual experiences are fun to read too ;)

EDIT: I also remember Carl recently mentioning on the forum that he has the ability to create a fuel efficient map with lower power. That combined with the homebrew version of mazdaedit that's available means that owners can change custom maps fairly easily.

I think that's an interesting possibility. People often talk about mapping to add power, but mapping to add efficiency is maybe more relevant these days.
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Re: Coils

Post by mi60o0 »

This is not a happy looking box
LEXUS LS430 4.3 v8 family car
Done exhaust and work wheels

Mx5 nd soul red Mike daily and work horse

Jessy’s Jaguar xkr 4.2 supercharged for fun family days
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Re: Coils

Post by RobinPZ72 »

Looks like the couriers had a kick about. I would certainly mention it to MRP.

Looking into software too purely for data analysis, but will have the the mapping option. Now I don't know much about the ecu on the Rx8, but if I'm right the ecu will learn what's best with std mapping when upgrading parts. I think this is why non totally compliant components can work OK on one car, but can cause issues with another.
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Re: Coils

Post by warpc0il »

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Re: Coils

Post by RobinPZ72 »

Would that be your choice Dave?
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Re: Coils

Post by warpc0il »

It's what all the recognised rotary specialists use.
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RobinPZ72 (Thu Dec 27, 2018 10:50 pm)
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Re: Coils

Post by RobinPZ72 »

Hey I'm getting a test done on those Plasma Coils, so we can have proper data on them not just basic info!!!
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Re: Coils

Post by RobinPZ72 »

Ok! Guess what looks like I'm going to get the Plasma Direct coils yes there expensive,but I got some results back, which are impressive and it would be good to get other coils data that's using the same testing process, so the data can be cross referenced fairly! I'll add data requirements tomorrow and if anyone can fill it out we can get the result comparisons together! Mazda stock OEM coil test (NEW COIL)


Value measured Mazda RX8 OEM Stock coil

Max primary current 6.68 A
Peak / Peak current 6.75 A

High voltage output -43,000 V
Fall time for voltage 42.8 us

Spark current 67.3 mA

Dwell time 3 m/s

If we can get others data with these parameters please!!!!!!!!
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Re: Coils

Post by Ryan Rotary Performance »

Be genuinely interested to see how you get on with the new coils!

Great to see some results for them too! See what the extra buck gets in terms of spark energy.

Once Phil is ready I'll post my independent results up too for completeness.
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Re: Coils

Post by RobinPZ72 »

Me too and fingers crossed, but I'm fairly confidant they'll be good apart from the cost!

Anyhow its over 100Ma and fall time is almost half, so will reach max voltage much quicker! Not sure on the multi spark either, but electronics baffle me sometimes, which happens a lot!!!!

I suppose plasma telly's weren't cheap either and the new rotary engine will probably be plasma or laser spark maybe on to something and they've been about for a while too!

I have been looking at the DB7 coils but like truck coils they aren't really meant for high rev application's !They do however have the 3 pin application and would require an extension to the wiring loom and new bracket!

One plus side with the plasma coils they are a direct fit with JDM compatibility, so no errors or errors we don't know about! I do understand the cost is much more, but we need to test these things instead of slagging them off with no experience of them at all! I got an 8 page test report on them from a R&D testing facility in Germany, so no favouritism there!


Even if there's no power gains its still much cheaper than some other modifications out there #-o
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Re: Coils

Post by RobinPZ72 »

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Re: Coils

Post by ChrisHolmes »

That look seriously bright and hot, how long before the electrodes burn away would be my concern.
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Re: Coils

Post by warpc0il »

What's the additional connection you're making to switch from "normal" to OMG?
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Re: Coils

Post by RobinPZ72 »

That's connecting up to the Plasma source!!!!! Should burn the fuel well deep in the chamber :mrgreen:
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Re: Coils

Post by ChrisHolmes »

Unlike a piston engine the rotary spark plugs do not project into the combustion chamber so I wonder how the small hole for the trailing plug will fair with the huge plasma spark.
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Re: Coils

Post by warpc0il »

I was wondering the same thing and thinking that the main benefit would be to fit the plasma system to the leading coils and leave the trailing coils running standard coils.

95% of the power comes from the leading plugs and the trailing is mainly there just to clean up emissions.
This would also avoid any issues with the plasma discharge trapped inside the tiny trailing hole.
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Re: Coils

Post by RobinPZ72 »

on the data I get from the leading and trailing outputs the leading is always higher and the trailing is just tagging along unless you give it some stick then they jump into life, so it wouldn't be a massive spark unless its needed!

Oh I couldn't mix the coils it would break my brain!!!!!
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Re: Coils

Post by 350matt »

RobinPZ72 wrote:
Wed Dec 26, 2018 10:52 pm
What plastic Tat are you referring too?

Hey these are just other options on plugs and coils and in no way any suggestions of buys these cause there better as none of us know!

Hey have we spoke about mapping on this thread yet?

http://www.rotarymotion.net/guides/can- ... ap-an-rx8/
those mapping results are interesting, it'd be good to know what the AFR was on each and what changes were made over standard for each one
I do like the fact that they posted up the barometric data too

as there's been plenty of posts about how folks tend to find 10bhp ish with a re-map
I wonder if this because of their modifications allowing the engine to breath better and so already be running that bit leaner which seems to help them

and that plasma ignition looks entertaining!
when are you trying it in the car?