ook, I'll add a comment

Any form of normally aspirated power mods.
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ook, I'll add a comment

Post by BIG-Mal » Thu Aug 08, 2013 7:17 pm

For a normally aspirated engine

Power mods
"see thread labelled boost junkies"

Anyway simple "additions"
Exhaust and filter 'help your car breath easier'
Induction kits, deffo recommend ditching the vfad and replace with a cold air feed, all so recommend making sure whatever filter element u choose have it protected with a full heat sheild, you could also add some aluminium/glass fibre heat lagging cloth 'this cloth works incredibly well' if you want an example I can give it "damned easily"

Power increase, maybe +5 possible, torque may drop

Get the car tuned with these mods, adding a decat would also remove more exhaust restrictions and give FLAMES, not forgetting a toyo spirt zorst youll also get quite alot of popping and banging aswell 'even without a decat'

Power increase "again little to nothing" with correct tuning you could or should see improvements 'couldnt say what tho. Dont expect +20 bhp from an exhaust or +10 for induction and airbox removal etc these aint turbo charged cars which do see massive power hikes from relatively simple and basic mods.

Best mod keep your car nicely serviced, filters, coils oils plugs and leads 'dont let them slip'

Next a excellent mod 'add a nice badge' these are proven to give limitless power hikes
Ive recently seen a micra with a transformers insignia "that mama had true class, unlimited ammo and huge bhp figures"

Other good power mods "keep your brakes uoto spead" making your car faster or more powerful "YOU DON'T WANT TO FORGET YOU STILL NEED TO STOP ALOT FASTER" sticking dimpled or drilled disks labelled performance disks 'dont be that idiot'
Standard power ish cars ok, add aftermarket pads disks, bigger power hikes turbo, super-charger or even a engine transplant chnage to a bigger brake/more piston setup ie somethi ng designed for higher power applications.

Another good power mod, learn to drive safer,, its not all about foot to the floor, good gear changes, good timing, road positioning, correct gears etc would make a good driver even better. Not forgetting be aware of your surroundings, driving stupidly Aka blind I dont think anyone would cares if u drive this fast or that "your going to crash maybe even die" so that micra is still better and faster then you

Aero additions, unless your increasing your engines output adding wings bodykits etc is only adding to the drag of your car. Yes they may look nicer but in the aim for poeer and speed most if not all kits add to the drag factor "notice land speed record cars or top speed cars all actually reduce the verticle plains and unnecessary venting, cover wheels up etc and even some go without a silly Big spoiler. A good well designed car would have the air passing over the car pushing it down just by the cars body shape alone, spoilers gtc type are mainly there to give stability in cornering at speeds.

So simple for a start-up
1 keep ur engine serviced
2 keep ur brakes in tip top
3 know your limits, remember the rds aint a race track
4 exhaust
5 decat
6 fire extinguisher "erm just incase"
7 air filter or induction kit "theres more out there then the basic ones we see on our shores"
8 tune the engine 'hopefully by a specialist nit Bob u met in the pub'
9 add a good quality badge
10 dont use regular fuel, v-power or other good performance aka 'they cost more fuels'
11 remove unnecessary weight from your car, seats, mothers, kids, girlfriend's, number plates as these will improve the driving experience 'certainly alot less nagging'

I'll add afew more details of my development ideas, as hopefully more ppl will stsrt thinki ng out the box rather then in the box stuffed right at the bottom, whilst being afraid to come out n play.

Mal

Plz note some comments in this thread aint exactly recommended or road legal "dumping your gran with your girl friend on the side of the m25 will certainly cause a stir and more then likely end in tears 'for you'

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Re: ook, I'll add a comment

Post by warnock360 » Thu Aug 08, 2013 8:05 pm

One other cheap mod to consider is viper stripes. These have been proven to add circa 30 bhp on dyno tests. Well worth it ;)

On a more serious not consider verious forms of porting when/if you have an engine rebuid.
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Re: ook, I'll add a comment

Post by BIG-Mal » Thu Aug 08, 2013 9:03 pm

Mmm porting good but doesnt it reduce the life span of the engine, am pretty sure ive read somewhere it was saying you'll be at abmuch high risk of premature engine failures.
But then again they do increase the fun factor of driving rotary engines.

Viper stripes "uknow I cant believe I forgot to add those to the list lol"

I'm actually surprised no-one has added anything in this thread til now, theres loads in the boost junkies section "personally I like the tubby front myself and certainly miss the power and thrill of the drive" not forgetting extracting more power with a tubby is pretty damned easy even on a rotary

Only issues
The under bonnet temps
Sustaining a good cold air feed
Not overcooking the engine ie too much psi
Bad tuning, leading to predet and bang dead engine
And these damned coils "relocation and protection mixed with upgrading has got to be a much better way to go"

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Re: ook, I'll add a comment

Post by Dadiodude » Thu Aug 08, 2013 10:03 pm

You missed the most obvious one £3 - £5k
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Re: ook, I'll add a comment

Post by djtonymorgan » Thu Aug 08, 2013 10:08 pm

Lightened flywheel and counterweight is also an option that a few of us are going for...
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Re: ook, I'll add a comment

Post by Rotary Revs » Thu Aug 08, 2013 10:14 pm

BIG-Mal wrote:Mmm porting good but doesnt it reduce the life span of the engine,
No, not at all. street porting doesnt effect engine lifespan in any way at all ... why would it? [-X
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Re: ook, I'll add a comment

Post by DanBass » Thu Aug 08, 2013 10:16 pm

A street port shouldn't really have that much impact on engine life, in fact a properly done Bridgeport shouldn't either, you're exposing slightly different areas of the seals to friction forces but not more of it, it's not known to make engine life significantly worse. In fact the types that do are the ones that bite into the water jackets, and they are mainly due to high temps rather than seal wear.

:edit: beaten to it by someone who knows better than me, :)
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Re: ook, I'll add a comment

Post by Will66 » Fri Aug 09, 2013 9:45 am

The only form of port that might decrease engine life is a J-Port as they can impinge on the water jacket.
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Re: ook, I'll add a comment

Post by DanBass » Fri Aug 09, 2013 9:52 am

Peripheral porting also impacts engine life quite spectacularly, for the obvious reason that you've cut a sodding big hole in the side of the rotor housings...
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Re: ook, I'll add a comment

Post by BIG-Mal » Thu Aug 15, 2013 9:20 pm

I know ive read afew columns on ported rotory engines "couldnt say or remember what type"

Am curious why theres little comment on C02 to cool the inlet temps or use of nitrus, except on slight comments on the boost thread 'both c02 and n20 Work great on aspirated engines' so long as its not over used aka 100cc nozzles
As the great movie states "you'll blow the welds on the intake"
Also shows a warning that if n20 is over used ur floor pan will fly off and possibly decapitate someone.

Also short shifters to give that slight billionth of a sec difference over a standard shifter

Come on
Wheres the
"ive been tuned up here got this done and my cars great"
Or any comments on gutting a cat "does it really make a difference??????" or a cheapo way to do a bodge job

Different coils, relocation etc
Light weight pullies any difference in engine response (had on my old car and the difference was noticed under the bonnet "could see 1" & erm noticed in my wallet" engine was pretty much the same......
Flywheel "is there a noticeable difference in performance or is it noticed only in the driving
Jocky wheel could this be increase in size??? For a different inlet setup??? A mazdaspeed race setup maybe?????

Is there any mods from the rx7 that could be applied to the rx8 other then loosing weight

Is there rx8 or rotory specialist on here that tune or race the 8, not just parts suppliers theres got to be more then this very limited knowledge base

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Re: ook, I'll add a comment

Post by Will66 » Thu Aug 15, 2013 9:41 pm

Cooling inlet temps with CO2 isn't much of an issue on N/A motors really, provided you get a good cold feed to the air intake you'll be fine. RX8s seem to like a tickle of the laughing gas with a bit of extra fuel dialled in, 75 hp shots are common.

From my experience, a set of D585 coils (Rotary Revs coils or BHR coils) will give you a smoother, more free revving motor and beefier mid-range torque. For those needing a rebuild who are after a bit more umph, then a streetport would be essential, I know both Hayward Rotary and Rotary Revs offer them and both seem appreciably more potent. Then something like a Cobb with a Mazdamaniac calibration service would be well worth it to make the most of it. The streetported motors I've been out on track with are very strong, particularly in the mid-range. Currently bridgeports are rarer, Haywards Rotary have a working one that they're pleased with and some have been out in it and declared it to be a pokey beast, Rotary Revs are working on theirs too, see Bulldog's thread for more on it though.
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Re: ook, I'll add a comment

Post by BIG-Mal » Thu Aug 15, 2013 11:22 pm

So whys the power n performance mods not really coming through on here????

N20 is there anyone on here using it, maybe even on a turbo motor??? Just to give a better insight to it. The extra fuelling is easy to sort as kits usually have a matched fuel injector along side the nitrus.

So
Portings an option
Upgrading plugs leads and coils
Exhaust
Filter/induction "done my own thing"
Lightened flywheel etc
Short shifters
N20
C02
Even added water injection "more beneficial for tubbies tho"
Decat or gut ur cat 'whats the best???'
2.5" or 3" exhaust system (local garage said a full 3" system works massively better on the rotory) side note id already bought the usual system)
A good battery
good servicing etc
Power mod stickers
Tuning "by who n where at???"
Any engine upgrade parts/race orientated???
What about adding a triple rotor??

Dumping weight??
A/c is there a kit??
Lighter set of pullies full kit?? "any real difference"
Air pump "mod for dumping It like on the rx7's anyone done this????"
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Re: ook, I'll add a comment

Post by Phil Bate » Thu Aug 15, 2013 11:42 pm

Running a decat allows the engine to pick revs up quicker from idle, and very noticeably. I found this after running one for a while and then re-fitting my cat - I was almost caught out moving off a few times. Dan also recently decatted and commented the other night how easier it picked up from idle. No idea what this does throughout the rest of the range without back to back dyno, though my car feels pokier with no cat.

As for the SAI air pump - I did start working on a way to remove this. Unfortunately on the RX-8 the PCM actively tests for it's function by regarding the change in AF ratio in the manifold when activated. Removing it will cause a cel every other cold start. Fooling this is fairly tricky as you need to convince the PCM the exhaust is lean when the pump should be on. However, the front O2 sensor works like a 'current pump' so it's not as simple as switching in a resistor. I did make some ground on this but my time is limited and I've had to leave it for now
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Re: ook, I'll add a comment

Post by BIG-Mal » Fri Aug 16, 2013 12:23 am

Mmm Phil, I remember u posting It before on ur thread

Am just trying to throw ideas out as there seems to be little movement on this front, which is odd for the mount of time the 8's been out for
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Re: ook, I'll add a comment

Post by Will66 » Fri Aug 16, 2013 11:26 am

There's not a lot of performance to be had from the RX8 easily. If you look at the project threads most of the more performance orientated ones are lots of suspension and brake mods and running stock motors. I don't know of anyone running nitrous in the UK. One guy did on his turbo set up but I suspect that was mostly for show.
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Re: ook, I'll add a comment

Post by DanBass » Fri Aug 16, 2013 12:09 pm

To add to Phil's comment, I'm running a cheap cat that's been gutted. It's had some interesting results, the main one being that the car picks up through the lower rev range much quicker. It's definitely a noticeable difference, and I was quite surprised as I believed there wasn't much in the way of freed up airflow on the renny, but it really has! I kind of want to clean and polish my exhaust ports now to see just how much more rev happy I can make it, especially considering my 192 has somewhat limited lightened flywheel options... Grr. Where's my hole saw...
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Re: ook, I'll add a comment

Post by Will66 » Fri Aug 16, 2013 12:11 pm

Just fit a 231 flywheel and counterweight, then you can use the far more extensive range of 231 clutches too. Good one if you're rebuilding an engine.
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Re: ook, I'll add a comment

Post by DanBass » Fri Aug 16, 2013 12:12 pm

Yeah I know, I can't really be arsed having the box off again though, and I've just fitted a new 192 clutch. I'll wait till I blow it again in 4 months time then see what's what.
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Re: ook, I'll add a comment

Post by Will66 » Fri Aug 16, 2013 12:15 pm

4 months on a clutch? That's not cool.
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Re: ook, I'll add a comment

Post by DanBass » Fri Aug 16, 2013 12:16 pm

Lol, it wasn't, no, it was a faulty unit to be fair, I removed literally half the facing with a heavy right foot, doh.
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Re: ook, I'll add a comment

Post by Will66 » Fri Aug 16, 2013 12:18 pm

Ouch, that's bad. I've had 70k from my first clutch and it was only part worn. My second clutch is barely worn after 24k.
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Re: ook, I'll add a comment

Post by DanBass » Fri Aug 16, 2013 12:30 pm

My first one managed 95 odd before it went, which is quite impressive all things considered. This latest one feels lovely so far, so fingers crossed.

Back on topic, I have some other thoughts and observations on the ghetto decat too, which I shall post up shortly.
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Re: ook, I'll add a comment

Post by BIG-Mal » Mon Aug 26, 2013 7:00 pm

Im undergoing more testing of my "homemade induction unit" and to be honest

Ive now ditched my type 2 k&n induction kit for my unit. The car seem more punchy throughout the gears so much so im needing to break that bit more "and heavier" sound is abit deeper, but not as ear bleedingly loud as with the k&n.
Im also using a home made resonance chamber as I dont like the standard unit "bit too boxy for me"

But, after my "today test" I do need to finish the heat sheild for the filter, ive not yet tested the engine bay temp but the filter housing was hot, waaayyy too hot for my liking,
Edit "today after being out for 20 mins I measured the engine bay temp 55 degrees after the engine was switched off 2mins prior to temp being measured"

As for the myth of "you need a huge filter etc erm no" as for your best using the standard airbox erm again no "im coming up with a better option" the vfad system honestly id say to everyone ditch it

Uknow ive actually had alot of fun in a 20minute test drive today then ive actually had all day driving the k&n filter setup

Also, ive fitted some silicone vacuum lines "just to spruce up the bay" and yeh it looks abit better
EX faff owner "ST205 GT4 with 338BHP" now a REX-8 owner I love me driving & me cars

Toyo zorst, toyo de-cat to-be fitted, K&N type 2 induction, magnacor ignition leads, NGK laser plugs, updated coil-packs, updated battery, N3Z1 updated starter, carbon fibre door trim.

Plans, carbon fibre coil pack heat shield with cool air flow, also induction kit & radiator heat shield

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