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Birth Of An Rb25

2rismo

By 2rismo,
in Motorsport Builds

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whatsisname Grand Master

whatsisname

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I'm the same mate. Between my Plazmaman plenum, ETM manifold, numerous other custom alloy and stainless gear I've had done, and an all signing and dancing $20k welder we've recently ordered in at work... I also have one hell of an appreciation of professional welding skills!

Leigh's welding abilities are in another dimension in comparison to my capabilities.

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2rismo Grand Master

2rismo

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Good and bad. It wasn't bad as far as first meetings go and considering the number of new things to keep track of and the tame settings in the thing, it didn't do too bad at all.

First run out I blew the manifold to BOV line clean off and discovered that the spring in the BOV is about 16.5-17psi. :D It was doing all the boost control for me :) and we pulled every cooler pipe, hose, clamp and fitting off to chase the boost leak that was none of the above.

With that problem sorted (but with round 2 and 3 qualifiers happening in my absence, I had to make do with a random dial-in for first round eliminations. I thought that an 11.anything would do for the day and so dialed in 12.00. It would only hold about 3psi on the foot brake so it drove off the line again (2.006 60') and with the boost leak fixed went 11.87 @ 120.89mph. The speed was back but the launch was atrocious. The transbrake would have to do for grudge runs soon to come.

I forgot to arm the brake for the next pass so we just wont talk about that, okay? :P

Last pass they had time for was ok. Good burnout, everything ready to go, transbrake to about 8psi and when i let go of the button it just went sideways and spun all through first with me peddling it to get it under control. I should have in-car vid of this pass soon. Slow (11.7 @ 120 - 1.9 60').

That was all we had time for today but will be back soon to revise the launch technique. A 1.60 60' time will see the car in the bottom 11's/high 10's no trouble at the same boost etc. Fingers crossed. :)

Good to catch up with a few people today. Thanks to Elmsy, Macka and Yavuz from Unigroup Engineering for their help.

2rismo Grand Master

2rismo

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did u take any data logs? if so what did the oil pressure one look like? (i'm using the same pump/line setup as u on a car i'm building)

Oil pressure was about 60psi when oil up to proper operating temp. That's reading the gauge during the run. Haven't seen logs yet.

2rismo Grand Master

2rismo

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One of the best parts of the day was cruising with this guy. Car runs 8.30's on slicks and went 8.60's on radials. Made the 45km cruise and drove through the night from Calder Park to be at the event. (They raced the day before!)

24ndv88.jpg

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