Russman's Time Attack Build

[Russman]

So time for another update.

My entry has been accepted for WTAC 2012! Time for the work to begin! Well... continue. The next phase of development is happening now

I had to replace the water and oil lines that go to the turbo. The water lines were speed flow rubber braided lines but the rubber was actually melting through the braid. They have now been replaced with teflon braided lines and fittings so shouldn't stop it. The oil feed line had been crushed between the turbo and the strut tower. I was shocked when I saw it but turbo seems fine. Noticed it early enough to avoid causing too much damage. It's now secured so it won't happen again.

I've started stripping more out of the car for weight reduction too. So far I reckon about 25kg. The heater box alone was 9kg. All remaining sound deadening and carpet is going too. Roof lining, centre console and anything else that isn't really needed.

The old half cage is gone to make way for a full 6 point cage in the next month or so.

[Russman]

Another big change is the car is now making heaps more power! We decided to have a crack at E85. We used united pump E85 and were amazed with the results.

We did a run on 98 to establish a baseline. It made 284rwkw on 18psi which was what we had on the unigroup dyno in Sydney so that was good to know the dyno is accurate.

To begin with E85 we didn't even touch the boost and it gained 35kw at 2psi less! 320rwkw @ 16psi.

Then we started to lean on it with more timing and boost that got it up to 346rwkw at 19psi. We were amazed!

Final tune is set to about 325-330rwkw keeping in mind that this is a track car and a completely standard RB25.

One thing that has been going crazy in terms of development is Aero. It's such a big topic and I'm doing my best to understand it and apply what I can.

I've started with some ideas for front splitters and have a few theories about how I can do what all the big teams do on a budget. I am going to try my best to learn how to take moulds and make carbon fibre bits. I'll upload photos as I learn.

[Piggaz]

Coming along nicely Russ.

Have you had a chance to drive the car since it going to E85?

[Russman]

No only up the street in an industrial area. Was mental. Had dyno street tyres so I did a biiiggg burnout

[louie b]

Loving your car man I to have a r32 gtst with a rb25 getting into time attack, I've just done the wide body rears the over fender style will post pics soon good luck looks sick!!!

[Count Grantleyish]

Russ, shit just got real.

All the best for WTAC 2012 mate.

[louie b]

[DJRIFT]

Good stuff russ.

i wouldnt go past just doing it in alloy. its marginally heavier but if you learn to fold and cut it yourself then get someone to weld it its a pretty cheap option.

i was surprised looking at the old Group A-C cars how much ducting was made by alloy and just riveted together.

just an option to save cash.

[Roy]

Mint. Will have to work out a weekend where I can run my car on the Ace Dyno as I am real curious to compare our curves and outputs.

And I am back in Melb soon so reality has just set in. I have two cars and no parking so may need to look at seeing if you have an empty spot at the Man Shed.

[Russman]

Good stuff russ.

i wouldnt go past just doing it in alloy. its marginally heavier but if you learn to fold and cut it yourself then get someone to weld it its a pretty cheap option.

i was surprised looking at the old Group A-C cars how much ducting was made by alloy and just riveted together.

just an option to save cash.

yeah the undertray will be aluminium and wrapped in carbon for rigidity. actually I think a lot of it will be.

Mint. Will have to work out a weekend where I can run my car on the Ace Dyno as I am real curious to compare our curves and outputs.

And I am back in Melb soon so reality has just set in. I have two cars and no parking so may need to look at seeing if you have an empty spot at the Man Shed.

That would be cool Troy.

Factory is pretty full but give me a call.

[boxheadmr]

nice results and hope you are enjoying the "sweet" smell of E85 pwr

If i could make one suggestion with you spliter is to try and get it as close to the ground as possible, around 60mm if you can. The faster and smoother you can get that air under the front the better. Plan on having to take it on and off a bit but it is worth the effort, use some quick release fasteners on your front bar to make it easy if you continue to go down the path in your pic's.

[Russman]

Will do. Thanks Matt. You know I'll be stealing your front bar fastening idea. Or at least similar to it

[ssxRicho]

[Nee-san]

Hey Russ,

Car looking good mate if you want a quick release use a Dzus fastener if you haven't already thought of it !

[Russman]

Yeah I was looking at them although I didn't realise they were spelt like that haha. Where do people buy them from?

[zebra]

Your local revolution racegear / *insert other race equipment shop name here* should have some

[FST513]

Hell yeah! Can't wait to hear this beast again at WTAC 2012! Sounded fworken awesome at ADGP calder.

See you soon!

[Russman]

Thanks Kory. Looking forward to your awesome shots of the car. Tell where on the track you'll be and I'll make sure I occasionally get some opposite lock on

[BOZ22N]

Sick.

That's alot out of the 25. Go you good thing

[louie b]

Hey mate love the car!!

What size tyrers do you run on the front ?