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Same wheels as meeeee! I'm running 18 x 10.5 +15 on an R33 GTR and the the rears are borderline too wide and I reckon you can fit more under the fronts... Although I have a fair bit of camber up front so maybe with a street wheel alignment it would look pretty full...

What sort of difference did the diffs make? More tail happy? How does it feel if you lift or brake midcorner?

  • 2 weeks later...
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calcal

Posted 21 September 2011 - 06:48 AM

Hey mate

Awesome build, what times did you get around lakeside? Hopefully I can make it on Sunday to the Japanese nationals.

Wow what a trip. Lakeside was awesome. Couple of highs and only the one low. Cracked a 58 flat on the first day with only 3 clear laps for the day as I was with a very slow group having never posted a time there. On tuesday I binned it into the armco at the entry to eastern loop trying to give another car some space to pass me and forgot to turn in myself, fell off the track and slipped down the grassy hill and into the fence. Bent a guard, a quarter panel and broke a wheel. Managed to break into the 57s that day.

Bashed out the damage and chucked on some borrowed wheels and went out again for a shake down for the Japnats on thursday. Bit scared to go hard with a bit of bruised confidence and borrowed wheels. but still managed some solid 57s.

Jap Nats. Well I did 2 sessions on the ageing federal FZ 201 medium compounds and was pretty skatey. The last session came round and I slipped some 18x 10 Advan wheels and Advan AO50 soft compound tyres and instantly dropped 1.5 seconds to post a 56.26 to be the second top qualifier by 0.04 seconds and, from what records I could find makes it the second fastest Skyline ever around Lakeside behind Mr Mark Berry in the Hi Octane R32. Needless to say That made the whole trip worthwhile.

Top 20 shootout came around and I got on the brakes too early into turn 1. With the soft tyres I'd pulled up 25 meters too early that I reckon cost me half a second through Carousel but still managed a 56.6 and still good enough for second outright for the day.

ordinary

Posted 21 September 2011 - 12:52 PM

Same wheels as meeeee! I'm running 18 x 10.5 +15 on an R33 GTR and the the rears are borderline too wide and I reckon you can fit more under the fronts... Although I have a fair bit of camber up front so maybe with a street wheel alignment it would look pretty full...

What sort of difference did the diffs make? More tail happy? How does it feel if you lift or brake midcorner?

Because I broke a wheel and bent another one I have just ordered another set of RPF1s but in a 10.5 +15 so with a bit of love I'll get some 285s under there.

The diffs were well worth it as I was having alot of oversteer dramas which the lsd in the front has pretty much cured. It actually is a little understeery now which is OK because it's easier to deal with then snap oversteer off throttle. Being a 1.5 in the rear it seems to handle mid corner stuff Ok but the front seems to allow me to get on the noise earlier.

Some pics from the week.

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post-10-1316953629584446078.jpg

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  • 7 months later...
  • 6 months later...

Gee it's been a while since I've updated this.

Probably cause not much has happened. I've raced it all year in our local events and without incident and its still working well. Also only doing local events this year as there has been alot going on in my life generally this year away from cars.

I have made a few changes to the brakes again by getting rid of the brake booster to allow for better brake modulation with the V8 Supercar brakes which has made it heaps better and not as bitey. Also was able to change the piviot to approximently 6:1 ratio to get the mechanical advantage lost when removing the booster back. Love the brakes now but would like to upgrade the rears to a 34 brembo or something that won't upset the balance as i reckon the bias is perfect now but may fade on the track with the stock 32 rears.

Bilet adaptor plate for master cylinder.

IMG_0072-1.jpg

Also start to experment with some aero mods for next year when I plan on getting down to Brisbane for more events down there. the bonnet and engine bay was working like a big parachute through the kink at lakeside and I could feel the front getting light.

This is the mock up I made out of ply which goes back past the cross member to try and smooth the airflow under the car. This will be used as a template for a fiberglass version with a honey comb alloy sandwich material on the inside.

IMG_0469.jpg

Got married this year to but still got out for a few laps at the bitumen sprints in the morning before we had to leave to be at the ceremoney. The lads got to my car while i wasn't looking.

IMG_0100-1.jpg

Got the 10.5 18s all round now to. pictured here with 03G dunlop 285s but will have 295s on for the start of next season.

IMG_0452.jpg

Actually been trying to use it more and enjoy it. this was taken from a lookout while driving throught the atherton tablelands a few weeks ago for nothing more than having a drive on some open, quite entertaining roads.

IMG_0591.jpg

Just a couple of pics from the sprint rounds this year.

IMG_0491.jpg

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Got a bit to do over the off season. I'm going to try and get the panel work straighted out from the armco incident last year and will be moving the drysump system to the boot. The engine needs to get pulled out as I found out during the year that the stock CP gudgeon pins are only rated to 600hp and at last count we were making around 680 approx when converted through the dyno. Cp offer an upgrade pin which will go in.

I have been thinking that just about every panel needs to be painted so was actually thinking about a colour change. Was thinking just a straight white so touch ups are easy and I kinda like white 32s with black/carbon bits. Also want to finish seam welding the floor so the interior will need a lick to. maybe a gunmetal grey or something.

Found this photo on the webz that I think mine could look like as I have much the same wing and the same bonnet.IMG_0607.png

Also start to experment with some aero mods for next year when I plan on getting down to Brisbane for more events down there. the bonnet and engine bay was working like a big parachute through the kink at lakeside and I could feel the front getting light.

This is the mock up I made out of ply which goes back past the cross member to try and smooth the airflow under the car. This will be used as a template for a fiberglass version with a honey comb alloy sandwich material on the inside.

IMG_0469.jpg

Hey man good to see this is still getting some attention. Just a quick question that lower splitter thats above your plywood and attaches to your stock lip on the GTR bumper any chance you could send me a few photos of how it attaches to the lip? It's just that I'm half way through making something very similar out of fibreglass for my car but am kind of stuck for how to attach it. Thanks in advance and cant wait to see that splitter once it's finished!

  • 2 weeks later...

Hey man good to see this is still getting some attention. Just a quick question that lower splitter thats above your plywood and attaches to your stock lip on the GTR bumper any chance you could send me a few photos of how it attaches to the lip? It's just that I'm half way through making something very similar out of fibreglass for my car but am kind of stuck for how to attach it. Thanks in advance and cant wait to see that splitter once it's finished!

The splitter is an empire aero piece and with a few holes drilled into it that match up to the 4 holes for the stock brake ducts and another 2 on the ends it will bolt up to the stock lip perfectly. there were even some markings on the new splitter that were near spot on where the holes had to go. It's pretty sturdy when it's all bolted up tight but might look into a bit of extra sercurity once the fiber glass is done.

  • 1 year later...
  • 10 months later...

The splitter is an empire aero piece and with a few holes drilled into it that match up to the 4 holes for the stock brake ducts and another 2 on the ends it will bolt up to the stock lip perfectly. there were even some markings on the new splitter that were near spot on where the holes had to go. It's pretty sturdy when it's all bolted up tight but might look into a bit of extra sercurity once the fiber glass is done.

Updates? Where did you get the Alcons from?

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