A Boy's Love For His Rb20

[Roy]

You feel it because you are bouncing around adn on the long sweeper you are falling out of the seat....anyway. Will post up pics to show why they are shit when it comes out again. Need to go back and do my EVO III Brisasaurus seat rail. (ie for prodigious units)

And a few pics from Sunday, my bus next to a friends new EVO. Kind of mutant cousins, both 2L, silver with black wheels

[zebra]

Im beginning to like the GTR wing Bris.

Engine bay looks a lot tidier now with the Plenum.

[beemae30]

Notice any difference with the plenum? I'm thinking of going that route.

[Roy]

Read a few pages earlier. Personally, I wish I had of listened to my tuner and left the std one on

[Roy]

Some of my not so smooth moments and a decent few laps at the end ...

[fatz]

you have a big coconut

and i prefer the old way you used to shift into 4th

new way is common and gay you fag!

[turboedsloth]

I see what you mean about that seat moving, its horrible

[Roy]

Thanks to Martin for the pics from the weekend...the brakes work well ... lap after lap

Lap 1

Lap 2

Lap 3

Lap 4

The PFC06 pads were really nice when hot. They were a bit grabby when cold which meant I was locking them up pretty often. But when up to temp they were a lot easier to modulate. Seems for the car weight, tyre grip and rotor (cooling) size I need to run a pad which comes up to temp a lot quicker. Also need to get the car's susp setup properly, I have big front ARC swaybar which seems to be unloading the inside wheel when i turn in trailing the brake a little. By the time I start to turn in I am only carrying a little bit of brake but is enough to lock the inside wheel when the big bar ties the sides of the car together and unloads the inside tyre

SO need to get the car's ride heights set, rose joints on the front bar set correctly and maybe backed off a little along with a good wheel alignment. has not had one since start of 2009

...and some not so incrimating pics

[zebra]

Consistancy is the key to success.

[Marlin]

She looks superb Troy

[sav man]

any brake shudder?

[Roy]

A shudder developed on the last of the few laps i ran at Sandown last weekend. Show up during the little street driving i did and during the firsf session at winton. Took the wheels off and checked everything was tight and nothing had loosened with the first lot of heat cycles. Nothing unusual but was able to nip up a ted. Checked pads and they were badly glazed. Cleaned up the pads and were brilliant from then on.

So maybe i under did the bedding. Or the rainearly on in the running in of pads/rotors. But what felt like warped rotors was just pad glazing.

[SimonR32]

That tyre end up feeling like you were driving on a 50c piece after the lockups?

I flatspotted mine at the top of 4th, only just touched the brake and jumped straight off when it locked but the damage was already done. Was like driving on a pogo stick around corners from then on

[Roy]

Because my lock ups were typically at the endof the braking zone my road speed was pretty low. You normally only badly flat spot tyres when you have some speed on board. i did actually pick up a flat spot the time i grabbed a brake early in the braking area. It probably was the reason it was locking so often afterwards, even when at lower speeds

[zebra]

How did you find the bias Bris?

Still standard rear brakes?

[Roy]

I am running R33 GTR Brembo rears with unknown pads. But seemed fine. There is the possibility i have too much front bias, but cant really tell with the alignment the way it is, racey pads up front with unknwons out back. But all seems ok at the moment,

[rotort]

Hey Roy,

Love the build up, very inspiring, most brisbane and GC based RB20s get pulled out for 25s or 30s, ive always wanted to keep mine, nothing like the work gone int your tho.

Some thougths on your brakes locking up, id say the front needs corner weighting, did it lock the right front on other corners, when it was inside wheel? It maybe that your ride heights are causing corner weights to be far to light on the passenger side causing the lock ups.

How do you find the power, even after all of your experiments, it looks wuite drivable, power band of 4500 to 8000 i doubt you would drop off boost, so shoud be ok. Does it come on too strong for corner exit traction on faster corners in 3rd and 4th or only in 2nd gear lower speed corners?

Keep up the good work, love it. Just wish I had the money to do what I dream of doing to mine.

I want 250rwkw so a healthy 400 flwhp and then suspension and handling more than more power. My goal is for a set of MCA coilovers, I know his son so support should be good, and go from there.

[phunky_monkey]

Because my lock ups were typically at the endof the braking zone my road speed was pretty low. You normally only badly flat spot tyres when you have some speed on board. i did actually pick up a flat spot the time i grabbed a brake early in the braking area. It probably was the reason it was locking so often afterwards, even when at lower speeds

I spun the Radical out of turn 3 at EC on slicks with a damp track and flat spotted all 4 tyres. I wouldn't have thought it would have done it so easily but with a bit of speed on board looks like its very easy to do.

Car look fantastic mate

[Beer Baron]

car looks awesome mate. and yeah brissasaurus racing evo 1 seat rail is still firmly attached to my seat mate. fark it's heavy though so if you do go ahead with evo III make me one! I'll actually pay for it this time...

ps I still have your koyo radiator here mate. want me to send it? or sell it? etc.

come up and stay at my place for a bit. i'm bored, have spare room and a keg of beer.

[Roy]

Just got approved 8 weeks of paid/unpaid leave. First few weeks will be just winding down, then OS then back relaxing...ready for more headfark projects uopn my return. So early July shoudl be some fun at EC/Wakefield and running amuk on Chateau le Count!

Thanks rotort...yeh, i love the lil 20. Yes, its still very drivable. I am a bit disappointed its not more of a wrestle to punt...but truth is its still quicker then me so am still chasing the speed the car has. Re setup, the car had a wheel alignment in Jan 2009, since then it has been in pieces, stored and no idea of ride heights etc. I suspect you are right as it only locks the front left when there is a bit of lock on so could be tied up with the too big a front swaybar with rose joints, ride height etc etc.