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G's S2 R3 C/W Refresh - gh05t O.E.+ Nitrous Oxide Equipt!

For you to showcase what you've done to your car and give other members ideas and inspiration.
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Re: G's S2 R3 C/W Refresh Build Thread.

Post by Goobie » Thu Apr 19, 2018 6:29 pm

4C885096-5C4C-429C-9A2A-6A3523335540.jpeg

Upgrades............ We all love them!

And for those who are following me on my build journey, your really going to like what’s going to be popping up on this now page 11 over the next few weeks!

So here we go, todays delivery's are from “Ryan Rotary Performance”, and Carl sure does design/make some top quality parts.

https://www.ryanrotaryperformance.com

Got a set of his engine mounts, I do actually already have upgraded ones, but prefer the build quality and look of the ones he sell.

Here’s some pictures, as your see the quality speaks for its self.
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Last edited by Goobie on Thu Apr 26, 2018 7:09 pm, edited 1 time in total.

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Re: G's S2 R3 C/W Refresh Build Thread.

Post by Goobie » Thu Apr 19, 2018 6:38 pm

Obviously I didn’t stop there, also got a bit of bling whilst I was at it being one of his 4 peice Pulley kits in red.

Yet again, Carl out did himself and yet another top quality product.

Picture overload...
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Last edited by Goobie on Fri Apr 20, 2018 12:57 am, edited 2 times in total.

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Re: G's S2 R3 C/W Refresh Build Thread.

Post by Goobie » Thu Apr 19, 2018 6:40 pm

The “MONEY” shot!

Overal, very happy, going to look great once I get them on.
76137674-B157-44AF-8179-D8752412DB5D.jpeg

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Re: G's S2 R3 C/W Refresh Build Thread.

Post by kopite72 » Thu Apr 19, 2018 7:02 pm

Carl's products really are top notch,brillant quality.I've seen the mounts and the realy are of the highest quality,moreso than the BHR ones IMO
PLAN...RR HB OR FB PLATINUM REBUILD
FULL RESPRAY

DONE...
FULL MZ CUSTOMS KIT
MILLTEK CATBACK
JAPSPEED DROPLINKS
FULL ALLOY REFURB
RR D585 COILs
6000K HID KIT
TINTS
20MIL SPACERS
PROJECT THREAD....http://www.rx8ownersclub.co.uk/forum/vi ... 04&t=59971

LOOKED AFTER BY THE FANTASTIC CREW AT ROTARY REVS
LOVING DORITOS SINCE 1991

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Re: G's S2 R3 C/W Refresh Build Thread.

Post by nightfire10 » Thu Apr 19, 2018 7:06 pm

Goobie wrote:
Thu Apr 19, 2018 6:40 pm
The “MONEY” shot!

Overal, very happy, going to look great once I get them on.

76137674-B157-44AF-8179-D8752412DB5D.jpeg
Stop it now all looks to nice [-X =P~
Hayward's bridgeported rebuild,595's,Tein coilovers with edfc,oil pressure and oil temp gauge pod's,lockwood front and rear grills,folding tow hook's,connect2
To do install sohn tank bracket made but still need to get time to install,caliper painting :thumright:

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Thu Apr 26, 2018 5:46 pm

kopite72 wrote:
Thu Apr 19, 2018 7:02 pm
Carl's products really are top notch,brillant quality.I've seen the mounts and the realy are of the highest quality,moreso than the BHR ones IMO
That they are! The mounts are pretty beefy, hard to tell from the pictures.
nightfire10 wrote:
Thu Apr 19, 2018 7:06 pm
Stop it now all looks to nice [-X =P~
Haha, I’ve had these left out on the side as look to good to be tucked away with my other parts waiting to be fitted, lol.



Right, thread title changed as you may of noticed as of now with this wee update.

What had started out as a bit of banta with friends about my car build had turned into a reality!

I would of owned this car for two years come next week and had not heard the end of jokes about how everyone had labelled my R3 a “ghost”!

This is mainly because it’s white and no one ever see’s it along with it making all my spare cash vanish.

So last weekend one of my friends looked up personalised registrations to send me the link trying to be funny only for me to actually buy it and sent back a screen print of my receipt thirty minutes later! Haha.

Paper work and fresh plates turn up today. The official plate display is GH05 TOE, my “show plates” I’ve had made up read - GH05T OE.

Obviously the OE is for O.E.+.

Luck be have it, I couldn’t of actually asked for a better combination, it’s bang on in every way and suit my car.
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Ghost Air Freshener

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Mon Apr 30, 2018 7:34 pm

Goobie wrote:
Fri Feb 09, 2018 10:12 pm
Ps, Just want to add, I kinda ordered something rather expensive this week for my build. You could say easily the most expensive single item upgrade to date for my build, can’t wait
Well well well, quoted my own post from a page back.

So finally after a long 12 week wait, this is the “something rather expensive” I ordered back at the beginning of February which you could say cost a little more than 50% (Once added brake pads.) of the price I paid for my R3.

Somewhere in this thread I did mention a change of direction with my car build and you may be thinking why such serious brakes? Well as stated at the top of this page, sit back and keep following my build journey because I’m not even halfway to where I want to be with this car and I’m waiting on a whole load of fresh parts to be delivered still...

Now, less about the hype and more about these brakes!

Jesus, they really are car porn!, and well worth the wait. I very nearly paid the extra £280 for “express delivery” which would still been 4/5 weeks.

So here we have my new full front and rear big brake kit by K-Sport.

I got 8 Pot Mono calipers on the front and 4 Pot on the rear with the handbrake feature.

Discs are matching two peice directional vented, grooved in 356mm dia, they are big!

The kit includes all fixtures and fittings along with braided lines to suit and even a pair logo’d towels.

I was a bit worried they might have some damage as the boxes look like they taken some beating while being shipped, but after opening them up everything is mint and extremely well packed from start to finish.

They was rather pricey, the wait was long, but now there here and I’ve had a good look over them I’m very very happy with them and I’m sure Ben at Rotary Revs is pleased as now I can stop emailing him asking if their in yet, haha.

Anyways, here’s the pic’s!

Enjoy.
Attachments
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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Mon Apr 30, 2018 7:37 pm

Front 8 Pots and 356mm Dia Discs.
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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Mon Apr 30, 2018 7:41 pm

Rear 4 Pots with Handbrake Feature and 356mm Dia Discs.
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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Mpv2k3 » Mon Apr 30, 2018 7:45 pm

Very nice! Hopefully they'll fit behind the wheels without catching
Diamond Grey 2009 Mazda Rx8 R3 - Owned since June 2012
K&N Panel filter>D585-R Ignition Coil Kit>BHR Engine Mounts>Lockwood Front Grilles>Mintex M1144 brake pads>RacingBrake braided brake lines>Black Diamond G12 Grooved Brake Disc Front & Rear>Eibach Spacer's front 15mm, rear 15mm>4-Pot Front Brake >RacingBeat ARB's

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Mon Apr 30, 2018 7:46 pm

Lastly, “The Money” shot!
4B8CBA9C-81FC-493C-B14E-B5719EC5F047.jpeg
Just to give you a real life idea of just how big they really are, here’s one of the discs next to my daughters bike! Not my bike, honest, lol.
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Last edited by Goobie on Sun Jun 17, 2018 3:58 pm, edited 1 time in total.

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Ray888 » Mon Apr 30, 2018 8:03 pm

Wow, thats one of my to-do mods mate, looks really good! :thumright:

I hate to think what the free towel is used for, when the excitment gets a bit too much :lol: :getmecoat:

Look forward to seeing pics of them installed
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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by kopite72 » Mon Apr 30, 2018 8:56 pm

I do loooooove a BBK,look great 8) What's the story with the handbrake on the rears?
PLAN...RR HB OR FB PLATINUM REBUILD
FULL RESPRAY

DONE...
FULL MZ CUSTOMS KIT
MILLTEK CATBACK
JAPSPEED DROPLINKS
FULL ALLOY REFURB
RR D585 COILs
6000K HID KIT
TINTS
20MIL SPACERS
PROJECT THREAD....http://www.rx8ownersclub.co.uk/forum/vi ... 04&t=59971

LOOKED AFTER BY THE FANTASTIC CREW AT ROTARY REVS
LOVING DORITOS SINCE 1991

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Scartlead » Tue May 01, 2018 4:46 pm

When is everything being fitted? :P and more importantly the pics for us to drool over
Aka Mark

My Build viewtopic.php?f=204&t=70916

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Dr. FrankenRex » Wed May 02, 2018 12:07 pm

Those brakes are sexy as. The discs on mine are about the same size and they are HOOGE. Behind the R3 wheels the OE discs just look small (when in reality they are quite big for OE fitment).

That setup does indeed look gorgeous, deffo know what those towels are for! :lol:
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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by tayfun » Wed May 02, 2018 1:05 pm

Now a turbo or 13b-rew/20b swap required to get full potential of those breaks :D

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Thu May 03, 2018 4:30 pm

Mpv2k3 wrote:
Mon Apr 30, 2018 7:45 pm
Very nice! Hopefully they'll fit behind the wheels without catching
Mark, aka mzivtims has the same brake size etc fitted without any problems.
Ray888 wrote:
Mon Apr 30, 2018 8:03 pm
Wow, thats one of my to-do mods mate, looks really good! :thumright:
I hate to think what the free towel is used for, when the excitment gets a bit too much :lol: :getmecoat:
Look forward to seeing pics of them installed
Haha, I think it could well be. Saying that, all of the kit has some kinda of thin oily coating over, maybe they threw the towel in each box for cleaning it off. I’ve not wiped any of it down, il leave that till I got them on my car.
Scartlead wrote:
Tue May 01, 2018 4:46 pm
When is everything being fitted? :P and more importantly the pics for us to drool over
Soon... Got some nice special touches planned, hence why nothing gone on yet, but once that’s all done your see why I’ve been holding off fitting new parts.
Dr. FrankenRex wrote:
Wed May 02, 2018 12:07 pm
Those brakes are sexy as. The discs on mine are about the same size and they are HOOGE. Behind the R3 wheels the OE discs just look small (when in reality they are quite big for OE fitment).
That setup does indeed look gorgeous, deffo know what those towels are for! :lol:
Haha, the towel comment again, they look like the type your see on the bar in a pub. I’m itching to get them on.
tayfun wrote:
Wed May 02, 2018 1:05 pm
Now a turbo or 13b-rew/20b swap required to get full potential of those breaks :D
Just got to wait and see, I didn’t just buy them for looks, haha.
kopite72 wrote:
Mon Apr 30, 2018 8:56 pm
I do loooooove a BBK,look great 8) What's the story with the handbrake on the rears?
Hello mate, I’ve just whipped em out again to get a few snaps of how the handbrake section works, it’s fairly simple and clever to be honest.

He’s a two page install manual thingys with photos which makes it dummy proof.

And here the bracket parts and with one slotted on the back which should be good enough for now.

Il take some good clear ones once I’ve fitted the kit to the car so you can see properly how it all goes buddy.
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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by kopite72 » Thu May 03, 2018 4:36 pm

Thanks Goob ;) Now hurry up and get these on the car!! Dying to see them :bounce: :bounce: :giggle:
PLAN...RR HB OR FB PLATINUM REBUILD
FULL RESPRAY

DONE...
FULL MZ CUSTOMS KIT
MILLTEK CATBACK
JAPSPEED DROPLINKS
FULL ALLOY REFURB
RR D585 COILs
6000K HID KIT
TINTS
20MIL SPACERS
PROJECT THREAD....http://www.rx8ownersclub.co.uk/forum/vi ... 04&t=59971

LOOKED AFTER BY THE FANTASTIC CREW AT ROTARY REVS
LOVING DORITOS SINCE 1991

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Thu May 03, 2018 4:45 pm

I never got round to posting this one up, picked up a AEM Induction Kit ages ago, mainly just for the bling effect as I like the look of it fitted. I decided I wasn’t going to actually fit it in the end as it won’t work with what’s plan for my car later on, more about that as it happens.

Anyhow’s since taking my engine apart is so far off yet, I will now be fitting it for a while mainly as it cleans up the engine bay so much and it would be a shame not to be able to see/show off my fancy Pulley kit from Carl at RRP with the factory air box hiding most of them.
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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Sat May 05, 2018 5:44 pm

More shiny goodies!

Decided to upgrade my cooling system for future purpose, this turned into some drama but got there in the end so il explain a little for future R3 owners who may be looking to upgrade theirs.

Il try make this brief, whilst I was shopping around I see and your see there is radiators listed for the S1 and S2 with conveniently the S2 costing more. Now the problem started when I wanted a Koyorad but everywhere was out of stock, so I then considered the Pro Alloy option which was a fair bit more. After a lot of googling for images etc, it was very obvious why the Pro Alloy cost that extra bit but was only available for the S1. Which then brings me onto giving them a call about making one for my S2 and was told they can without any problem but will be in for a five week wait.

Following on, Ben told me the S1 fits the S2 which works out as a bonus in more ways the one as your see. So before I made my order I wanted to be sure for myself and back to google etc I was.

So here’s my findings, there is only three differences between the S1 and S2 factory radiators being,

1- Core thickness, the S1 factory core is slimmer than the S2 factory radiator core! This is actually now irrelevant when upgrading to alloy radiator as your be buying a Alloy thicker core radiator.

2- Factory fan shroud has different attachment fixing points on the S2 compared to the S1. Now with this in mind, you can either swap over your fan shroud for a S1 setup, or if your like me and wanted a more bling kit, you can get the Mishimoto fan kit which they only make for the S1, so win win for me.

3- The two bottom location lugs are longer on the S2 radiators. After looking at mine, they point out the bottom brackets by 50% and guess what? The S2 lugs are 50% longer! All the lower bracket part numbers etc are all the same for the S1 and S2, therefore totally pointless and Mazda just added to be, well Mazda.

So there we have it, if you got an R3 and want a fancy fan kit to go with it? Save your self the extra £100 ish charge and go for a series one with Mishimoto shroud, or get a S1 shroud from a breakers yard and save even more.

Well, that kinda didn’t end up being as brief as I thought.

Back on track, I ordered a Pro Alloy S1 radiator. The quality speaks for its self, plus I like the way the end tanks are built a-posed to other ones available. “Apparently” these have a better flow design due to the shape of them and with inlet and outlet pipes being properly curved unlike others it makes sense.

Being the S1 radiator, I got the extra bonus of now being able to get and fit the bling bling Mishimoto fan shroud kit instead of putting non fancy looking factory shroud over my beautiful Pro Alloy Rad!

The fixing tabs on the fan kit ain’t the best, one not qute straight but easily bent into place, you can see the weld not great on that one too.

I fixed it to my radiator just to see how it fits and for the pictures, I got some sealing foam tape with the kit which needs to be put on and then il bolt it all together properly after that when I come to fitting it.
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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by kopite72 » Sat May 05, 2018 6:16 pm

Great info Goob thanks for that,good to know for R3 owners looking to potentially upgrade the cooling system,the rad looks the mutts nuts too,quality bit of kit 8)

Love what you've done/doing with your car,spending some money on her in fairness but it's top quality products which is commendable.I take it you'll be looking at a FB at some stage? If you haven't already seen it check out Habbo fox on YouTube,he has a few vids of a RR FB built by Josh.Awesome work,it sounds amazing.Its not fully run in yet and needs a map but if it sounds amazing now I can only imagine what it's going to sound like after a proper map.Think he'll be looking at circa 210 at the wheels 8)
PLAN...RR HB OR FB PLATINUM REBUILD
FULL RESPRAY

DONE...
FULL MZ CUSTOMS KIT
MILLTEK CATBACK
JAPSPEED DROPLINKS
FULL ALLOY REFURB
RR D585 COILs
6000K HID KIT
TINTS
20MIL SPACERS
PROJECT THREAD....http://www.rx8ownersclub.co.uk/forum/vi ... 04&t=59971

LOOKED AFTER BY THE FANTASTIC CREW AT ROTARY REVS
LOVING DORITOS SINCE 1991

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by tyler82 » Sat May 05, 2018 7:11 pm

Great choice of mods there! That BBK is looking really good. Not cheap, but at least you won't have to worry about the brakes for a long time.
Paul

RR Platinum Rebuild, Lightened Rotors and a Half Bridge, plus many other mods.

Check out http://www.rx8ownersclub.co.uk/forum/vi ... 04&t=66822

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Scartlead » Sat May 05, 2018 9:44 pm

tyler82 wrote:
Sat May 05, 2018 7:11 pm
Great choice of mods there! That BBK is looking really good. Not cheap, but at least you won't have to worry about the brakes for a long time.
I'd say never have to worry again ! Looking forward to seeing everything fitted :thumleft:
Aka Mark

My Build viewtopic.php?f=204&t=70916

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Fri May 18, 2018 3:56 pm

Drivetrain upgrades, whilst looking to better my clutch set up I’ve gone and got myself a Hel Braided Clutch Line to replace the factory rubber one which will help improve peddle feel.

I personally find in other cars during summer time mainly, when under bonnet temps get really hot there is very noticeable sponge feeling in the clutch pedal travel. It’s a good and cheap replacement option anyway compared to rubber can expand and degrades over time.

Then I moved onto flywheels, this is a proper marmite mod around here. For me I’ve always had lightweight flywheels on my cars and they suit my driving style. After a lot of looking around I went with the Racing Beat Aluminum Flywheel.

This is the lightest flywheel I could find, but bearing in mind that on these cars lightweight flywheels are kinda a false economy as counter balance weight is needed with them, hence why I went for the lightest possible to try cancel out the difference.

Anyway with this said, without getting into technical argument etc on my personal build thread, the rotating mass is now more central rather than leverage so to speak, so in turn less power loss via the drivetrain, although not a obvious notable one il point out.

Counter weight wise, I’ve got a genuine Mazda one. As seen in previous thread and some advice from Clive at MRP (Thanks.), other aftermarket ones can be hit and miss with balance spec resulting in shaking your e-shaft at high rpm causing alsorts of problems down the line.

Meanwhile as I ramble on about clutch assembly, as I was searching for the lightest set up, I was that guy who is stupid enough to buy a £65 Pettit Racing Titanium E-Shaft Flywheel Nut to go with it.

It’s a whopping 5.6g compared to 14.6grams! Really going to feel the benefits from this, haha.
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For those who interested I’ve stolen this info from another site, this is purely for information only and not for a discussion on my thread.-
I've gathered some info on aftermarket flywheels: what they're made of, their weights, etc to add some data to this question. Bear in mind the differences shown in brackets beside the weights are calculated to include the necessary counterweight ('C/W') so that you can get a more 'true' difference from OEM to aftermarket:

OEM benchmarks for reference:

RX8 OEM Counterweight 3.67LBS (Mazda Part Number: N3Z2-11-52X) http://atkinsrotary.com/store/04-11-Rx8 ... 1-52X.html
RX8 OEM flywheel 16.8LBS

In descending order of weight saving:

Racing Beat Alu 8LBS (-5.13LBS / -2.33KG) https://www.mazdarotaryparts.com/RX8--R ... -2003-2011

Fidanza Alu 8.5LBS (-4.63LBS / -2.1KG) http://www.good-win-racing.com/Mazda-Pe ... d=QfSMJybf

Black Halo Racing (BHR) Alu 9LBS (-4.13LBS / -1.87KG) http://black-halo-racing.myshopify.com/ ... r-flywheel

Competition Clutch ST Steel Ultra Light 9.68LBS (-3.45LBS / -1.56KG) http://www.jscspeed.com/catalog/Flywhee ... 285-1.html

ACT Prolite Steel 9.8LBS (-3.33LBS / -1.5KG) http://www.good-win-racing.com/Mazda-Pe ... -0279.html *Maybe requires product/brand-specific C/W

Pettit Racing Chromoly 11.33LBS (-1.8LBS / -0.82KG) http://www.pettitracing.co.uk/pettit_ra ... wheel.html

Exedy ZF01 Chromoly 12LBS (-1.13LBS / -0.51KG) http://www.good-win-racing.com/Mazda-Pe ... -0277.html *Maybe requires product/brand-specific C/W

Mazdatrix Alu 12LBS (-1.13LBS / -0.51KG) https://www.mazdatrix.com/8flywheel.htm

SPEC Alu 12LBS (-1.13LBS / -0.51KG) http://www.jscspeed.com/catalog/Flywhee ... 285-1.html

Competition Clutch ST Steel Light 13.2LBS (+0.07LBS / +0.03KG) http://www.jscspeed.com/catalog/Flywhee ... 285-1.html



Upon reflection of all of the above information, by the time you add the counterweight back into to the assembly, the lightest flywheel above only makes a difference of 2.33KG to the entire rotating assembly yet the heaviest actually adds weight (albeit a few spoonfuls of sugar in the difference). So the debate as to whether your hard-earned will be worthwhile put into a flywheel given that most of these are €500+ including counterweight (at today's prices before shipping), is really up to the owner to decide.

In terms of weight-savings in the rotating assembly, one could put the money towards lighter aftermarket wheels (there are significant savings to be made there over the OEM wheel weight of ~20LBS/9.1KG per wheel), or a pair/set of 2-piece ('floating') discs & save (depending on the product) ~4.4LBS/2KG per side front & ~2.5LBS/1.3KG per side rear (e.g. Racing Brake 2-piece front & rear) saving an overall saving of 8.8LBS/4KG on the front & 5LBS/2.6KG on the back (13.8LBS/6.6KG total front & back). You'd possibly feel a more positive difference driving with the lighter wheels or brakes than you would with a flywheel I'd imagine but then this is all academic until someone tries it out or has worked with a performance/racing team who's documented the different effects.

How a lightweight flywheel works.

How does a lightweight flywheel work? Amongst the majority, there are two schools of thought concerning light flywheels. The first is that they do not contribute to power output. The second is that they do. Which thought is correct? In fact both, in a way, are correct.

If we measured the power output of an engine first with light flywheel and then again with the standard part on an engine dyno, no change in power will be seen to occur. At first it appears that the light flywheel has done nothing and was a total waste of cash. This is not the case. A dyno that shows max power at constant revs does not demonstrate what happens to an engine's power output in real life situations - like acceleration. If an engine is accelerated on a dyno (we are talking about a rate of around 2000rpm a second ) it would show a power output of around 20%-25% less than at the constant rev state.

The reason for this is that when accelerating a vehicle the engine not only has to push the total mass of the car but the internal components of the engine need to be accelerated also. This tends to absorb more power as the extra power is used accelerating the internal mass of the engine components and is why a motor accelerating on a dyno will produce less power than at constant revs. Also it must be remembered that the rate of acceleration on the engine internals is much greater that the rest of the car. This would then suggest that by lightening the flywheel, less power would be required to accelerate it and therefore more power would be available to push the car along.

Now, it may seen unbelievable that by removing a few pounds from the flywheel a noticeable difference to a 3000lb+ car’s acceleration will be made. In fact the difference is quite noticeable and the secret behind this is hidden within the gearbox. Everyone knows that cars accelerate at a greater rate in low gears, this is because a car’s gear box basically a mechanical lever and just like when using a leaver to lift a heavy object, the gearbox reduces the mass of the car that the engine sees. For example, in first gear an engine will see the car's mass as only around say 250lbs but the engine internal mass would still remain around 45lbs.





It is now easier to see were the extra performance comes from when you lighten a flywheel. You effectively "lighten" a car by more than 10% in first gear just by removing mass from the flywheel. As the gear used increases this "lightening" effect is reduced. This is why car’s acceleration improvement reduces in higher gears, to very effect in top gear. Great for drags and tight race tracks but will not increase a car's top speed.

You will see the calculations include the diameter of the flywheel, weight lost (same overall rotating mass difference in UUC Stage1 or Stage2 due to pressure plate weight differences), gear ratios including 6-speed application, and typical diff ratio.

The effective "virtual" weight losses are:
GEAR M3 and 3-series "virtual"
weight lost: M5/Z8/540i "virtual"
weight lost:
1st gear 346.5 lbs. 394.4 lbs.
2nd gear 133.15 lbs. 151.7 lbs.
3rd gear 68.9 lbs. 75.4 lbs.
4th gear 46.18 lbs. 48.5 lbs.
5th gear 36.15 lbs. 37.6 lbs.
6th gear 30.04 lbs. 31.0 lbs.

A general rule of thumb for weight loss equivalence to "gained" power is approximately 10lbs/hp. That is for every 10lbs lost, the car gains the effective performance increase of 1hp.

With that in mind, the effective performance increase expressed in gained power can be expected to be the same as the "virtual" weight lost due to the flywheel in each gear divided by 10:

GEAR M3 and 3-series "virtual"
performance gain: M5/Z8/540i "virtual"
performance gain:
1st gear 34.6 hp 39.4 hp
2nd gear 13.3 hp 15.2 hp
3rd gear 6.9 hp 7.5 hp
4th gear 4.6 hp 4.9 hp
5th gear 3.6 hp 3.8 hp
6th gear 3 hp. 3.1 hp


This gear-dependent gain is also another reason why a typical 4th-gear dyno pull may not show a significant difference - the calculations show that little more than 4hp would be detected, yet a 4th-gear dyno run shows nothing of real-world acceleration through the gears. Improvements in rev-matching and upgraded clutch clamping power remain regardless of gear.

Due to the nature of the "virtual" weight loss, typical 4th-gear dyno runs may show miniscule differences. Real-world acceleration runs will show improvement equivalent to the "virtual" weight loss.
Last edited by Goobie on Fri May 18, 2018 5:42 pm, edited 3 times in total.

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Re: G's S2 R3 C/W Refresh - gh05t O.E.+

Post by Goobie » Fri May 18, 2018 3:59 pm

So I ended up selling my Pettit Racing exhaust purely because I’m fussy and it bother’d me I didn’t buy it brand new, to then go and order it again brand new.

I stuck with the Pettit Modular system mainly because I like the fact I can switch between different cat pipe section with the ease of slip on and off options of- Sports Cat, Straight Pipe, Single silencer or dual!

Plus it has more of a throaty roar tone compared to the Racing Beat one.

Lastly, I personally think the tail pipes are more suited to the R3 rear styling to, and is really the only part of it your actually see when fitted anyway.

Following on, I got the dual silencers de-cat section to go with it this time.

These things still come new with oxidation round the welds etc which is abit crappy, so I gave it all a quick polish around the welds etc and that cleaned them up a treat.

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