No Crust Racing

So the consensus appears to be along the lines of this. Adjust for some toe out up front, up to around 1mm (each side or total static?) Replace the factory sway bars so I'm not relying on the spring rates/damper settings to control body roll I can't easily change spring rates so they will have to stay, this is just budget club sport after all. I think I'm at the max of the front camber, I may be able to get it up to around -2.5 but I don't think going heaps more camber is the answer as my corner speeds aren't "that" high and if the car isn't leaning over enough I'll be chewing out inside edges. If I recall correctly, I think R32 GTS-T or GT-R factory front sway bars fit S13's and are a nice upgrade. I also need to get some toe arms to correct the toe in at rear, as I understand it it should be 0 or at the most 1mm total static toe in for stability, at present it's a bit more than that due to aforementioned toe arm damage. Thoughts?

Hi guys, I've noticed that after a number of hot laps the car will want to understeer at Winton, most notably through the left handed sweeper and coming out of the cleavage up the back. I realise some of this will be due to overheating the tyres, and I'm playing with pressures at present but I'm also interested to know what else I can do to increase outright front grip, not just increase the time before the tyres start to go off and get greasy. Car is as follows. S13, CA18DET, mild mods for around 165rwkw, mild weight reduction, rear interior removed air con and stereo fully removed, battery in the boot passenger side. - Car has BC BR Coilovers (8kg front 6kg rear). - Damper is currently set on 4 clicks from softest of 32 settings up front but I'm playing with this as the harder I go damper, the less roll I have but the faster tyres go off, lowering the hot pressure seems to negate this though. I wold not say the car rolls excessively as is evidenced by tyre wear (see below). Rear damper is softer for max power down, also has C-West wing (rear grip is no issue what so ever). - Tyres are Federal 595 RS-R 235/45/17 (8" front, 9" rear rims). Last tested at 36psi hot front and rear. Ran a PB by 3 tenths compared to old RE55s so grip is reasonable from these. - Car has approx -2.2-2.3 camber up front, -1 at rear. - 0 toe up front, few mm total toe in at the rear (somewhat due to an ever so slighty bent toe arm which are getting replaced). - 5-6 deg castor front. - Basic strut brace up front, none in the rear - Standard sway bars (suspect replacing this could help but as the spring rates are already quite high for an S13 it may not be required) - S15 power steering rack and super pro bushes, good condition tie rods etc - From an aero point of view, I have a standard CA front bar with some venting cut into both sides for oil cooler and CAI, the lower edge does taper back towards the car on an angle so a small amount of lift could be generated there possibly. I suspect I need to focus more on mechanical grip rather than aero as the car is only entering the left handed sweeper at about 130km/h. I realise going back to R-Comps will help to some degree but at this point that is not an option as the RS-Rs are cheap, have decent grip and, are only 2 track days old. What can I do suspension wise to improve front end grip? Initial turn in is good, it's mid corner and exiting when I'm trying to get on the gas as early as possible that I start to see understeer. I'm interested in tuning the current setup or replacing stock parts, not replacing already upgraded parts. Is it worth me knocking up front splitter and undertray for the front of the car? Do I need more camber perhaps? Tyre wear looks good and it is not feathering the outside edges that I can see. Hopefully that's enough info. if you need to know anything else let me know. Cheers

Had my second session on these yesterday and went 3 tenths faster than my previous PB which was set on old RE55s. http://www.natsoft.com.au/cgi-bin/results.cgi?24/09/2011.WIN.S1 I'm car 66, finished 23rd. I'm very happy with these results as I've only driven on these tyres twice and have been at Winton twice in the last 3 weeks and then nothing before that for 12mths. The car is no more powerful than it was on the previous PB though has had a small amount of weight removed and some redistributed. All in all a good result. I dropped hot temps to 36 front and rear ad firmed up the damper and found more grip on offer and for a little longer. The loss of grip was much more progressive also and the car still responded though wanted to understeer through the left handed sweeper.

That's awesome. If I ever have a car that goes beyond club level hacking I'll certainly consider that sort if thing. The S13 is just a fun hack to tide me over until I've paid off enough on the house to warrant another GT-R.

Side bar: You do less work than I do...

Completely agree! I didn't say I did not check pressures, I said I didn't want to do it every session because I'm lazy. I keep tabs on the temp and the weather and if the tyres go off sooner or later I check them again when I return. This is why I know how much my pressures come up and why I'd had chats with Federal about it. At the moment, I'm trying to find the right pressure to keep them on for longer and give me max gripz

Yeah fair point, as I said though it's a starting point only. TBH I don't really want to be making pressure adjustments after every 15min session anyway, I'm too lazy for that

It's just a starting point Benny. You don't just rock up at the track with no idea of what pressures are in the tyres to start with. For those of us without proper tyre gear, like a pyrometer, we need a reference point of some sort. I know that my car, given a certain ambient temp range, will increase tyre pressures around 4 psi from its cold start pressure, But that's just coming back into the pits after a session, and checking temps quickly. Which is affected by how much cooling down I did before coming in etc. In actual fact it could be 4-8psi on track which I'd never know without having some of those fancy pants wireless valve cap type sensors. Or coming straight in after a hot lap to a waiting mate with a pyrometer at pit entry to check temps. So, we need to start somewhere and we're not exactly racing for pink slips here

I'm dropping mine for this Saturday, will be trying a cold start pressures a few PSI lower than before. Will be taking my good gauge and my compressor so I can adjust as necessary. I've had an alignment done as well so this might help a bit also.

A lot of aftermarket computers will take a wideband input in the 0-5v range, I've got my AEM output wire in place ready for when I upgrade my management and can make use of the wideband readings. Having a local supplier for the Innovate would be good too given some of the failure info around just in case that still applies. As an aside, My AEM shipped with an ever so slightly suspect 4 pin harness, I contacted my supplier through ebay and he had AEM send me another express from the states no questions asked. Who you deal with from a retail point of view is just as important as which product you buy.

Done

Ash had a whinge so I've posted this here too. Gates open 7:30am, scrutineering starts at 8am, and beginner sessions kick off at 9am (grouping is based on expected lap times). Timing is provided, not sure how this is done but assuming Dorian with times displayed on a screen near the scrutineering office. Cost is $160 email [email protected] to enter but get in quick. AASA is all that's required. I'm not associated with Tampered, just sharing as I'll be there as will Brendan (for DECA people who know us).

Gates open 7:30am, scrutineering starts at 8am, and beginner sessions kick off at 9am (grouping is based on expected lap times). Timing is provided, not sure how this is done but assuming Dorian with times displayed on a screen near the scrutineering office. Cost is $160 email [email protected] to enter but get in quick. AASA is all that's required. I'm not associated with Tampered, just sharing as I'll be there as will Brendan (for DECA people who know us).

Yep normal, gauge reads up to 18:1 and on decel the mix geats leaner than this so it displays those --- instead.

Sorted this, for anyone else after one (same for all Silvia's) Nissan part number is 32862 V5001

Hey guys, I need to move on from the SAFC2 to something with timing control. A mate of mine has offered me a Haltech Interceptor for $250 with all the wiring and cables needed to plug into laptop etc. Software is freely available online. Are these any good versus say an e-manage blue? I'll be tuning it myself and only need basic fuel control and timing control (CA18 with T28 fitted so need to be able to pull out some of the timing advance the factory ECU dials in when it sees the increased fuel amount). I've already got an AEM wideband wired up also. Cheers

Noticed a smell and a leak at the last track day, had a look and found the top gearbox seal is shagged. I need one quickly so Nissan might not be an option. http://www.sillbeer....shifter-top.jpg That rubber seal at the bottom of the shifter is what I'm talking about. Anyone know of a universal option or another place to get that?

Sorted this, wired up the alternator to the battery side of the switch so when the switch is pulled there's nothing on the engine harness side to provide any power at all so the car stops and cannot be restarted until the switch is reset. Pull tab is located near the base of the windscreen just below the A pillar on the drivers side.

lol why does everyone end up with a wiper stalk! I had to fit a different one as my car had the rear wiper but the non rear wiper stalk... dodgy. If we cross paths at DECA I'll buy you a drink then.

AHHHH! Words cannot express my appreciation! (Don't get any funny ideas!) I see you drive an R33, do you need a wiper stalk?! It's the only part I have left over from my 33 days, you can have it if you like lol

THAT'S THE ARTICLE! I'll contact them and see if I can get some hi-res pics! Basti you legend, you might have just won the Internet.

=\ It's out there, because I found it and it's also on this forum now and on my facebook.... I think it's just taken from someone's awesome trip of Japan (motor website or something wherre they have visited tuning garages etc). Also lol Bulbasaur.

Cheers See how I go next track day, bit of a change going from R-comps so will take some getting used to.

That's a lot of growth in pressures, you are clearly going faster than me Federal called me back (awesome customer service) and we discussed my setup in more detail. He suggested dropping the pressures a touch 2-psi front to back respectively so that puts it on about where yours are. I'll try this at the next track day the weekend after this one. How many hot laps are you getting? what camber/toe/spring rates? Cheers for the feedback.