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dalem

My super GT Nismo S15 - GT300

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So decided to buy myself a new track car.

 

Car no. 2 of 3 built by Nismo (autostaff were contracted to fabricate to Nismo design).

 

The car was raced during the 2001/2002 season in Super GT Japan - GT300 class.

 

Unfortunately the car was plagued by bad luck and engine failures, but still managed to be 3rd in the championship both years. (in 2001 suspension failure cost them a DNF when in the lead and on points the championship, 2002 a tyre failure cost them in the same situation)

 

I will update the thread with infomation and data as i go. keep an eye out for it at WTAC this year!

 

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awesome!

 

please keep us updated. also seconding request for a f**kLOAD of pictures.

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How much did you pay for it ?

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How much did you pay for it ?

 

Im not going to disclose that. Silly question really.

 

 

Plenty of pics coming. Engine is halfway through being built at the moment.

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why is it silly?

 

worried your wife reads the forums?

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How much did you pay for it ?

 

Im not going to disclose that. Silly question really.

 

common mate

private message it to me, i remember seeing this go up for sale and i wanna know what it sold for ( actually i thought some dude in Europe bought it )

Im just curious to know what ill be looking at if one of these ever came up for sale again

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What a preposterous question that is.. fancy asking him how much he paid for it.. what size thread are the wheels nuts

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How much did you pay for it ?

 

Im not going to disclose that. Silly question really.

 

common mate

private message it to me, i remember seeing this go up for sale and i wanna know what it sold for ( actually i thought some dude in Europe bought it )

Im just curious to know what ill be looking at if one of these ever came up for sale again

 

You wont be getting a private message sorry mate, it was advertised for 130k Euro without engine and transmission. There was only 3 built, the other Cwest car I have also secured and the Daishin is in Nismo's hands.

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Heres some pics of the engine build and associated things:

P12 SR20VE outer springs with 16ve inner springs. N1 retainers (16grams each!!) and special cams from the Nissan motorsport shelves.

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Custom CP pistons - 86.5mm, teflon style skirt coatings, ceramic top coat - few other trick things done underneath - but no pictures of this ;) - Weight is 299/300grams per piston.

Special NISMO I beam conrods with titantium bolts. Weight is 455 grams each.

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Exedy Hyper carbon clutch - managed to grab this from some old stock a friend in Japan had kicking around. Couldnt turn it down at the price he offered me!!

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Some port and polish work on the VVL head. Ive actually much further ahead than this point as its almost read to go, but it does give some idea.

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For this car the turbo has to be pretty crisp and responsive, but still give enough up to. Its a pretty hard stretch. We will be racing the car in various forms of motorsport, so having all top end is not really beneficial except for time attack. The turbo we are doing in house and is really a bitsa, and a little experimental.

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A few reasons..

  1. Reliability and simplicity. Should anything ever fail on a race weekend, 9/10 its going to be the actuator and this is easy to carry as a spare, and also easy to fix. If an external gate flange cracked, or the chances of a pipe fracturing higher and repairing when away at the track isn't easy.
  2. There isn't much space in the engine bay, which is another reason its been ceramic coated.
  3. We are able to achieve a 30mm sized port in the housing.
  4. The HP levels wont be stupid and should be well within range. On top of this, we looked at the pressure ratios needed for the turbine and HP we wanted, and the WG shouldn't have to be doing a crazy amount of work unlike on a street car.

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What sort of power are you hoping to achieve?

 

Are you doing billet wheels? Any more specs on turbo your thinking?

 

You mentioned it didnt come with a gearbox what setup are you going to use

 

 

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any pictures of the car in your actual possession or are you just going to post stuff from google image search?

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any pictures of the car in your actual possession or are you just going to post stuff from google image search?

 

It must be pretty awesome feeling knowing you own 1 of 3 ever built s15 race cars !

should be an absolute weapon once you finish with it - look foward very much to the updates / progress :)

 

Not sure if im a fan of the V6 they chose to use however haha. but all in order to keep to rules...

 

I Found some the OP posted when perusing SAU ended up on FB. didnt take much effort to find.

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What sort of power are you hoping to achieve?

 

Are you doing billet wheels? Any more specs on turbo your thinking?

 

You mentioned it didnt come with a gearbox what setup are you going to use

 

Only 550-600HP - so 350kw or so at the wheels.

 

Yes playing with billet wheels and inconel exhaust wheels.

 

We will be running a 6 speed sequential.

 

any pictures of the car in your actual possession or are you just going to post stuff from google image search?

 

Are you asking for direct pictures of the car? I am not sure what your are steering at here.

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any pictures of the car in your actual possession or are you just going to post stuff from google image search?

 

It must be pretty awesome feeling knowing you own 1 of 3 ever built s15 race cars !

should be an absolute weapon once you finish with it - look foward very much to the updates / progress :)

 

Not sure if im a fan of the V6 they chose to use however haha. but all in order to keep to rules...

 

I Found some the OP posted when perusing SAU ended up on FB. didnt take much effort to find.

 

The v6 was fitted by the previous owner because they had issues building a reliable DET locally, and a friend of his had access to the opel v6 DTM engine. The car was never sold with the original motorsport SR20VET engine.

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looks great which car did you actually buy ?

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Looks really good delam/Autech !!! I'v also ceramic coated and teflon coated the skirts on my pistons well worth it.

 

I think the exedy clutch is probably a waste of time as I also had one and sold it off cheap as it only supported approx 230 rwkw.

Exedy don't spec it to handle 400kws at the fly I think even the twin plate version wasn't super strong either.

 

ATS/Carbonetics have a twin plate carbon that supports 800hp with the 1100kg pressure plate.

 

Looking forward to more pics when you get a chance!!!!

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Wow nice get, well done! Look forward to seeing it at WTAC.

Just ignore the usual agitators, you know how it is on here :S

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Keen to this this at WTAC, so mad!

Following for updates :)

Edited by Wehoh

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Looks really good delam/Autech !!! I'v also ceramic coated and teflon coated the skirts on my pistons well worth it.

 

I think the exedy clutch is probably a waste of time as I also had one and sold it off cheap as it only supported approx 230 rwkw.

Exedy don't spec it to handle 400kws at the fly I think even the twin plate version wasn't super strong either.

 

ATS/Carbonetics have a twin plate carbon that supports 800hp with the 1100kg pressure plate.

 

Looking forward to more pics when you get a chance!!!!

 

Hi mate,

 

The carbon I have is 1280kg pressure plate along with 200mm carbon disc. Carbon is really only for race cars - they really on heat to increase the friction coefficient. To add to this, HP is hard to measure and generally a marketing gimmick in relation to carbon clutches. They they do slip on the street cars often. In theory - a carbon clutch will always hold the power as long as enough heat is generated. It would take some extreme temperature/pressure to separate the resin from the carbon.

 

looks great which car did you actually buy ?

 

Those pics are of the same car, the orange UJ livery was original, and the others are what the previous owner cycled it through.

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Started ripping into things in the last 24hours. Pulled arms out for the sphericals that need attention. Mocked up engine to fabricate engine mounts soon also. Just going over everything to make a general list of whats needed to be done. Shocks i am going to pull out and rebuild/revalve as they are currently setup for something crazy like 1350lbs on the front springs.

 

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How have they made the mounts for the front lower control arms without the subframe? I was kicking around the idea to do this to my car in the future to lower the engine about 50mm.

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GT rules stipulated the arm mounting points had to be in the same general location (shifting horizontal/vertical was allowed). The mounts are located below the rail.

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Awesome purchase mate!

Good luck at WTAC this year!

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Another update, been way to busy to update every second day. Have rebuild all spherical in the suspension arms etc. Shocks have been switched back over to the bilsteins (original race shocks - magnesium body). Spring rates dropped back down significantly and all setup ride heights again!

 

As she sits now:

 

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Turned up new eye adapters for the bilsteins as they were different thread to the Dynamics:

 

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Started putting the engine together. Bottom end crank girdle, studs etc i wont show pictures of...cant give away all my secrets.

 

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Thank's for continuing to share. What is the coating on the pistons, pray tell?

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