Race Car Pics, Yours Or ?

[RAP260]

Beautiful car, great video and driving. Very jealous.

 

I try to not watch too many videos of you guys racing...too distressing... Lol

Edited April 17, 2018 by RAP260

[Cozza]

Yeah nice run Brett.

I’m interested in ratios, would you mind sharing:

What size tyres?

What gearbox?

What diff ratio?

And, what rpm do you generally shift at?

 

Thanks

Mick

[Brett240]

Good run Brett, Porkers don't seem to like turn 1 for some reason although the red one in front of you was driving some nice lines.

 

 

cheers. they've got more grunt, more grip and bigger brakes so you have to drive the tits off the Z to keep up. turn 1 is one of the only passing opportunities against the faster Porsches as not everyone is willing to go through there at 10/10ths. everywhere else they can cover us. 

Edited April 17, 2018 by Brett240

[Brett240]

Yeah nice run Brett.

I’m interested in ratios, would you mind sharing:

What size tyres?

What gearbox?

What diff ratio?

And, what rpm do you generally shift at?

 

Thanks

Mick

 

 

im only the part time driver so not sure on the ratio's, its Steve Smiths car. Jason might know the box ratio's better than i would, he put it in, though they are stacked fairly close. 

 

tyre size is a 195/60 14 

diff ratio for eastern creek is a 4.4

RPM change is generally 7300 to 7500, though off the start it tends to see 7800 in first and second gears, red mist causes that. 

[Cozza]

Thanks for that.

My redline is about 6k, I guess it’s quite different to have another 1500rpm up your sleeve.

 

Cheers Mate.

[dat2kman]

Yeah nice run Brett.

I’m interested in ratios, would you mind sharing:

What size tyres?

What gearbox?

What diff ratio?

And, what rpm do you generally shift at?

 

Thanks

Mick

My old car, bit lighter now, and a fair bit more power, after Jimmy Flett gave it a tickle under its nuts.

[Brett240]

Thanks for that.

My redline is about 6k, I guess it’s quite different to have another 1500rpm up your sleeve.

 

Cheers Mate.

 

 

a 6K redline engine would be a mid pack car, still lots of fun. you need the extra 1500 rpm to be on the first few rows. 

[Cozza]

Yeah, you’re right.

My car is definitely no front runner but is a bit of fun.

According to Harry’s my PB at the GP circuit is 1:53.9. A mile behind you guys. I must get around to uploading some of my laps to YouTube but here is my first attempt at Wakefield Park.

Excuse the lack of editing.

 

[Brett240]

Yeah, you’re right.

My car is definitely no front runner but is a bit of fun.

According to Harry’s my PB at the GP circuit is 1:53.9. A mile behind you guys. I must get around to uploading some of my laps to YouTube but here is my first attempt at Wakefield Park.

Excuse the lack of editing.

 

 

 

could be time to stick that in group S 

[Cozza]

Haha.

 

Mine is a mild MIA L28 with 40mm Webers and will in the near future, have a bolt in 6 point cage and coil overs.

Just wish I could keep up with the group s cars though. ?

[Bloozed]

Always wondered why the group S cars were so much faster, 7500RPM explains a lot. Back to SWR for a "nut tickling" (is that for me or the car?)

[Brett240]

Always wondered why the group S cars were so much faster, 7500RPM explains a lot. Back to SWR for a "nut tickling" (is that for me or the car?)

 

7500 plus rpm means its useless for the road. it doesn't really get into its groove till 5800. would be horrible on the road. 

[PZG302]

It's not all in the motor....

 

I was once told many many years ago when I first started in motorsport, and have yet to be proven wrong, "If you want to go seconds faster, spend your money on brakes and suspension. If you want to go tenths faster, spend it on the motor"

 

A good case study would be comparing my old green car with the 280 when Jason had it and now. 

 

With the blue car, there has been a lot more development done to the engine than my car, probably a good 30hp difference before it got its tickle down south. The power delivery was also very different. The blue car made its power up top and revved a lot harder than mine. The engine in my green car was a very lazy truck motor that made peak torque at around 3500rpm and ran out of puff at about 6800rpm.

 

The times between the cars was very similar, but the big difference was the freedoms I had running my car as a 2B Prod sports compared to Sc. I ran 18" wheels using Porsche cup slicks, the suspensioin was still very simple and had good revalved koni dampers and springs built for the car especially. The suspension was set up to suit the slicks and the locked diffs it ran. Brakes were an area that gave me a big advantage, still simple, just using Wilwood 4 pots up front and Volvo 2 pot calipers on the rear with vented TP magna rotors up front and solid rotors on the bum.

 

Also I could get a lot more weight out of the car, with it using only a fibreglass bonnet and all steel panels, albeit the front guards were very lightweight after several days in a bath of carbusol to help with repairs, they were lighter than 'glass guards. The green car tipped the scales at 960kg ready to race with around 30 litres of fuel on board.

 

As for the differences in driving them, Jason would be the best person to comment, seeing as he never let me drive the blue one..... But whilst the blue car would drive away from the green one in a straight line drag, the green car could stop and corner better carrying more speed through corners and able to brake later and harder with no worries of brakes not working, plus the extra grip provided by a bald sticky 240 wide tyre compared to a treaded 205 wide tyre.

[260DET]

For some strange reason Z racers seem reluctant to spend money on suspension, which is doubly strange because here we have access to the best, from overseas or local. Grip is everything . Jason used to whinge about all the advantages that P cars were allowed but was too mean to spend money on the best suspension available, MCA.

Edited April 27, 2018 by 260DET

[Brett240]

depends on the class your running. in group S you're on stock pickup points, stock struts, stock brake setup. the rules have been the same for so long that for most tracks the ideal toe/castor/camber/ anti-roll on the stock equipment is well known so there's not a lot to talk about. the motor and driver makes a huge difference in that class because of that. 

[dat2kman]

Pretty sure the big bore big shaft Bilsteins, are a pretty decent unit.

That were fitted to the blue car

 

MCA just takes the Billies, opens them up, revalves and plumbs canisters into them,,,, for all kinds of adjustability, at both slow and fast response, and paints them in pretty colours.

None of which s permitted in Gp S

 

But you would not knw this,,,, oh font of fuckall knowledge, when it comes to these cars.

[260DET]

As a MCA  three way suspension user I some idea about MCA and Murray's ability to get the valving right which is everything. And Sc cars need the valving right just like any other race car, if I had a Sc car Murray would be the first suspension person I'd see, custom race car suspension is all he does.

 

MCA are starting to sell their stuff in the US to big raps from race car users, once at Lakeside the Z was understeering badly coming onto the straight. Two clicks on the low speed bump adjuster and the understeer was gone with no adverse reaction. Without that I would have been chasing my tail with sway bars, alignment and all that mechanical stuff. So that's how important valving is, with the appropriate spring rates too.

Edited April 27, 2018 by 260DET

[260DET]

Here we have the race Z that I would most like to drive on a circuit, the turbo 280ZX, typical light switch power delivery of it's time would provide some challenge above the usual. Note the tyre distortion, she is pulling some G's there.

[Gordo]

Was a wet day at the Phillip Island track , had to take a photo when the rainbow came out.

[PeterAllen]

Laguna Seca a few weekends ago.

 

Nissan and Datsun racing legends, John Morton, Peter Brock (USA) and Steve Millen.

More photos here:

https://www.sportscardigest.com/monterey-motorsports-reunion-2018-report-photos/

Edited September 6, 2018 by PeterAllen

[Gordo]

Targa, a few years back, would have been a bit scary.

[gav240z]

Z432-R

To quote @HS30-H

https://www.classiczcars.com/forums/topic/45444-genuine-ps30-sb-fairlady-z432-r-refresh-story-in-gallery/?do=findComment&comment=412805

Quote

Nissan's first official works race Z was something of a star, as it was used for the covers of several 432-R related publications.

This was the car that took part in the 'Zen Nihon Suzuka 300km' race at Suzuka Circuit on 18th January 1970, driven by SCCN works team driver Moto Kitano. Sadly, it was to be car's first and last race. Forced to spin to avoid another car blocking the track, Kitano was T-boned by a following car and was lucky to avoid serious injury. The car was a banana-shaped write-off.

Pictured: Nissan 'Yellow Book' Race & Rally Manual for the 432-R, front page of the Nissan Sports Options parts list for the 432-R, and the 'no.68' works 432-R race car in the old Suzuka Circuit paddock before that fateful 18th January 1970 race.

Love this car.

[Gordo]

One of my favourite race car pics.  Count the $$$$

[GregTas]

Topped by Coulthard's effort in the 1998 Belgium grand prix.  

 

Edited September 16, 2018 by GregTas

[Gordo]