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Russman's Time Attack Build

Russman

By Russman,
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Russman Grand Master

Russman

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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.

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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.

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

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Russman
Russman

Pulled the gearbox apart and what a mess! That's what 'clicking 3rd' with hot 295 AO50's will do to a 33 gearbox!  With some bits purchased from another donor box and help from Donny at For

Russman
Russman

Clean and up in the air. Final bits of work required to hit the track in November.

Russman
Russman

Wow. Yeah it has been a long time since an update in this thread. It's been laid up for a while. Sitting on stands and collecting dust. The last 2 years of my life has been a case of home renovation

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Russman Grand Master

Russman

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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.

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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.

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DJRIFT Veteran

DJRIFT

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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 Grand Master

Roy

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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 Grand Master

Russman

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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 Mentor

boxheadmr

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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.

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