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nfi

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    SAU Circuit Times

    in Motorsport

    Posted · Edited by nfi

    ns nickname: nfi

    Car Make and Model: SX Developments S15

    Circuit Name: Wakefield

    Lap time: 1:01.4

    Timing method: performance box

    Modifications

    Engine: Built 2.3

    Power: 400rwkw

    Suspension: Bilstein

    Tyres: Hankook

    Brakes: Brembo

    Other:

    Car weight: Not light enough

    Video with data overlay.

    • Like 1

    Top Speed @ Circuit Vs Power

    in Motorsport

    Posted

    S15 so not directly comparable.

    Car: s15 200sx

    Weight: 1150kg without driver

    Power: 265rwkw

    Aero: wing and front splitter

    Wakefield: 199km/h (via data logger but that is with my foot still completely flat to the floor at the kink)

    Eastern Creek: 228km/h

    1.04.0 at Wakefield

    1.39.6 at Eastern creek

    Have a new engine in the car now that is yet to go to the track.

    Piglet's Rebuild Of His Busted Tomei 2.8

    in Projects, Overhauls and Build-ups

    Posted

    Hi James - you are very quick around the creek (1.39.6) & wakefield (1.04.07) with < 300kw

    Must be a weapon of a car!

    Thanks Marko. Its definitely 'interesting' to drive even with the old 265. Still haven't got to drive it since the new engine, its just a dyno figure at this stage!! Just have some niggly issues I want to get right before I get it properly tuned.

    Don't to clog up Pauls thread. Build thread is here if you're interested - http://www.nissansilvia.com/forums/index.php?showtopic=520202

    pretty interesting. It would have been interesting to see how far you could have gotten to with the boost, but like you said, thats pretty ample for a sil! I have seen the graph, and for a turbo of its frame and capacity, it almost makes you wonder how it does it. I have also jumped onto the PT bandwagon, cant wait too see the results :)

    I agree. I thought it would be quite a bit laggier. I was a bit worried it might not really come on until 4200-4500. The precisions aren't really good quality though... I don't have much faith in it lasting... The casting and bearing and general fit and finish is a bit average but we'll see how long it lasts. I'm not expecting much though to be honest. The wheels are just so much better than garrett though its just too hard to ignore.

    Piglet's Rebuild Of His Busted Tomei 2.8

    in Projects, Overhauls and Build-ups

    Posted

    Finally got through your thread Paul!! There is so much sh*t talk in here....

    I think my SR is the engine that finally converted Paul to going to the dark side with a single.

    Here is an overlay of my car (black dots) over Paul's graph. I'm running same boost in the midrange but mine doesn't fall over up top. Both are on Yavuz's dyno. Somehow I don't think its the engine alone (it is a built and stroked VE sr) and the turbo has a lot to do with it (6262).

    Pretty interesting it made more power down low and also more up top with some losses in the midrange.

    Yavuz wanted to keep going, adding more boost but I reckon that is more than enough.

    Also, FWIW and those interested in buying a manifold, I had a extremely ordinary service and product experience with Alpha Omega....

    post-4048-0-16853600-1347265210_thumb.jpg

    post-4048-0-27971700-1347265217_thumb.jpg

    SAU Circuit Times

    in Motorsport

    Posted

    very sloppy lap for a 1.04 well done!

    I know! It was the first session of the day and unfortunately I only got two timed sessions before I broke the master cylinder. I was having issues with snap oversteer on corner exit. We later improved with swaybar and damping but a better time wasn't to be with mechanical issues setting in.

    In Car Circuit Videos

    in Motorsport

    Posted

    Went to Wakefield on Sunday at the NSCC day. Only got two timed sessions in before I wrecked the brakes in two consecutive passenger sessions ;)

    Still quite a few mistakes, car is a bit overdriven in a few corners but figured I post anyway.

    SAU Circuit Times

    in Motorsport

    Posted · Edited by nfi

    SAU Nickname: nfi

    Car Make and Model: 2001 Nissan 200sx

    Circuit Name: Wakefield Park

    Lap time: 1:04.07

    Modifications

    Engine: Turbo, ex gate, injectors, cams, PFC

    Power: 248.8rwkw (just touch up tuned on Saturday with R comps on)

    Suspension: Bilstein coilovers, whiteline swaybars, cusco upper arms in the rear and front castor rods

    Tyres: Hankook Z221's

    Brakes: R33 GTR Brembo's

    Body weight: 1150kg

    Natsoft: http://www.natsoft.com.au/cgi-bin/results.cgi?25/03/2012.WAKE.S2.Y

    In car footage:

    World Time Attack Challenge 2011

    in Motorsport

    Posted · Edited by nfi

    Finally got video's done with data logging overlay.

    Unfortunately in the 1.39.6 the video camera died on the way out of the pits.... Isn't it always the way...

    Here is a 1.40.2

    Here is me chasing Andrew (JET200) on his very first session in his car. Look at the way he drives away from me down the straight. Pretty crazy what 100rwkw (I had 265rwkw) more looks like down the straight! I want more powwwahh :)

    World Time Attack Challenge 2011

    in Motorsport

    Posted · Edited by nfi

    couldn't agree more mate. great post and well done on 15th in open! 1:39 is a seriously respectable time and you faired well against plenty of tough competition. :) 4th to 20th in open was covered by less than 3 seconds!

    I agree with nearly all your pooints, particularly about innovation over dollars. It's what I was trying to say with intelligence/talent/hard work overcoming bigger budgets. and the lack of rules really encourages people to innovate and try new stuff (witness MCA S13 with it's hammerhead front wing). and I also agree on keeping it relevant and keeping spectators coming. the key to it's success is that fact that's it's really different and that the cool super fast cars are not so far removed from what typical enthusiasts drive and race. Keeping out the tube frame cars is part of that (I know revolution were an exception).

    People who go to eastern creek regularly for different categories will tell you we never get crowds like that. about the only thing in recent times that comes close is historic meets like muscle car masters etc and that's a completely different segment of the community.

    I really hope we see WTAC 2012 and at eastern creek again. as much as I'd love to see a new venue I also love being able to directly compare results to previous years. that makes it all the more cool (like Tsukuba has been in japan) and it seems to suit the venue really well.

    again, congrats on a great result and a great time. :)

    Thanks Richard. Be interesting to see what happens next year. If you know Ian well might be worth seeing if you can help steer it in the right direction.

    nfi - James - stonkering time and effort - congrats! car looks awesome too.

    is that the same S15 you took to EC skidpan back in early 2006??

    come a long way!

    Thanks Chris. Actually that was a different one I sold because it was going to cost too much to have it he way I wanted it... So I bought a skyline for a while and then went back over to the dark side and bought a slightly more modded s15 think i'd save money and then ended up changing most of the parts on it!

    World Time Attack Challenge 2011

    in Motorsport

    Posted · Edited by nfi

    I really don't think its as bad as everyone's making out.... I competed this year in the White S15 200sx with "SX Developments" down the side of it.

    S15_speedshots.jpg

    This is a long way from a big budget car... Its a stock sr20 motor with a set of cams and a bolt on 3071R running on pump fuel making 265rwkw. Sure the widebody, paint, cage, carbon etc wasn't cheap but the car isn't a massive dollar car.

    I bought a set of medium A050's 2 months ago to practice on and only got one days on them as a driving solutions day got cancelled and the car wasn't ready for the other so like most people we weren't as prepared/practiced as we would have liked but we at least got a supersprint in the week before.

    For the event I had a second hand set of Hankooks, the medium A050's and 1 brand new set of Hankooks and that was it. We used the A050's for the first two sessions of practice and then went onto the second hand Hankooks which we used until the last session on Friday where we put the new set on and did the PB of 1.39.6.

    So it proved you don't need huge bucks to compete and at least be competetive. The freedom of no rules makes the innovation and preparation more fun not being constrained. Now obviously we were never going to win and dollars do play a huge part but I reckon the innovation plays as big a part as the dollars invested.

    That was proven with a couple of pro class cars that didn't meet the expectations/hype.

    The event has to differentiate itself from anything else otherwise it won't survive. The reality of Superlap is its a commercial venture so it needs to make money to survive. The best way of drawing crowds (therefore the investment, attention, hype & interest) is to have bigger, better and faster cars and currently there is very few motorsport events you can compete in that have limited rules.

    The only caveat on put on that is that the key to the success of this event is the 'relevance' of the cars to those watching it... ie. that car doing 1.35's is like mine.

    My concern is that if the event becomes tube/space frame, fibreglass/carbon body skin (ie. carbon body r35) etc then the event will lose its relevance to the audience and my personal opinion is, thats when it may begin to lose its appeal as they may as well be sports sedans. Have you seen the crowds a sports sedan event draw?? Nothing like world time attack..... which comes back to the commercial aspect for its long term survival.....

    Ku36 Vs 595 Rs-R

    in Motorsport

    Posted

    I've driven on the track with cars with KU36's, RS-R's and Z1 Star spec's.

    IMHO the RS-R's are the best followed very closely by the star spec's.

    I found the RS-R's to be the best all rounder as they work well from stone cold, have R comp like qualities in the way they lose grip when the slip angle increases but they do over heat more quickly than the KU36's (odd one of you above had the exact opposite experience). The RS-R's have a noticably softer sidewall than R comps which makes the barely tramline at all even on my car - 285 RS-R's all round and the car only weighs 1140kg (will be at WTAC in open class :))

    The star specs I went passenger in an EVO being driven in a very spirited manner on a twisty road and was unimpressed. I did, however, drive them on the track on a modded turbo mx5 and was very very impressed. They gave way in a predictable manner but still felt more like street tyres than R comps when compared to the RS-R's but not by much.

    If you bought the RS-R's or the star specs and had driven both of them in a relatively short period of time you'd find it hard to tell the difference.

    My experiences with the KU36's are different to the above. I had a set of them and i've driven a number of cars that had them on the track. I found them useless when cold, great when hot, not nearly as progressive on the limit as the RS-R's but the absolute grip of these tyres when they were hot was remarkable. When they got older they became very difficult to get hot particularly on the road at times making them a little on the dangerous side. As a result I wouldn't buy another set.

    Track Car Brake Advice

    in Suspension, braking and tyres

    Posted

    EBC's really are very bad. I would highly recommend anyone that likes them trying a different pad. Its amazing how much better pretty much any brand name pad is than the EBC's. Endless and project MU aren't expensive for no reason.

    On a budget the Hawk's are very good too even if they do lack a bit of modulation.

    The only pads EBC are better than is Lucas and the AR pads that some people seem to like.

    Note: This is assuming you want the best braking and are pushing really hard. If you don't care about ultimate lap times and are going for fun it doesn't matter.

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