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DcrDavid

9 second ls swap 260z build

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So more track visits. This time out I was getting after it launching the car. 2 step set around 5200rpm. Which by the end of the day resulted in breaking both half shafts at the same time lol. New pb though 10.1@136 running out of nitrous in 4th. Also made a full trim street tire pass on motor vs a stick hellcat on slicks. Took the W on that one and 11.6@125 first time ever attempting a pass on the 245 federal street tires.

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Fast forward to about april of 2019 and it was time to return to shift sector. This time on kill going for that 170mph pass. No games this time. There were 3 blue s30s there on saturday. Mine. A small block extremely clean auto one. And a ls swapped turbo also. Was cool to see other Z’s out there going down the strip. First pass of the day spraying 3rd-5th it kissed the limiter across the traps to a 170.19mph pass. GOT IT! Made 3 motor passes after that with a best of 152mph. Speedhunters and nrg also got some pics of the car while at the event.

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So this met one of my goals for the car. 170mph in the 1/2 now all I needed was a 9 second pass at over 140mph. And just my luck there was a track rental the same day. So I loaded the car up. And headed north about 4 hours to sac raceway. First pass. Grenaded a half shaft. Not a great start. So i ditched the 2 step as it was just too much for the stock half shafts and I just couldnt work the pedal right. Made some more passes after that to a best of 9.8@143. 2 goals met in the same day. Decided to make one more pass on motor as I still havent made one with the slicks on. And well........ I found a second neutral in the t56 where 3rd gear was. No grind. No gear nothing. After a swift yank it popped out and like magic all the gears were still there. And heres a pic of one of the axles that made the 9 second pass.

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I fought belt alignment issues for a good month or so and after destroying a couple belts I think it was finally straightened out. So it was dyno time. Still only had 245s on the car so it wouldnt hold after 5800rpm. But at 5800rpm on 12psi it made 751whp/685wtq. So with another almost 1000rpm on tap I dont doubt its making over 800whp now.

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I didnt have enough time to address the exhaust before the tune as the blower was still in a different state the day before. So I brought it in open xpipe and it had a y to a single 3” and that just wasnt going to flow enough. Off to the exhaust shop for a 3” y to single 4” and straight through vibrant 4” muffler.

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DcrDavid, Incredible build you have there, very impressive! I am reluctantly coming to terms with having to sell my brand new 5 lug, 17" Volk TE37V wheels with brand new BF Goodrich Sport Comp 2's (245' F, 275' R) or New Michelin Pilot Sport PS2 (265' R). I am planning on running a new wider flare and 315's which would force the sale of these beloved wheels. Perhaps something you may be interested in..

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1 hour ago, DcrDavid said:

Those are amazing wheels and I have been eyeing them but i need an 11” wheel out back too.

I hear you on the wider needs for the rears. I think I am going the SSR Professor SP1R's route in 11.5 or 12"...

Looking forward to seeing new progress with your car..

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On 10/3/2019 at 2:19 PM, Locadio said:

Impressive build! For the 9.9 run (nitrous) what was your suspension setup? Looks the 26x8 slicks clear fenders barely, did you rolled them?

So for the 9.8 and 9.9 passes they were on a 26x8 Hoosier bias ply. The fenders are trimmed they cleared there no problem but were a bit tight to the factory spring perch. 

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On 10/27/2019 at 11:49 AM, grannyknot said:

@DcrDavid, when you cut the rad support out did you weld in any kind of extra support underneath to compensate?  I'm thinking of cutting my rad support and trying to think of a way to restore the strength.

Thanks

Yes I added some square tubing to reinforce it.

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