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Project Rex Killer, 240z LS3


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#141 nathaninwa

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Posted 04 February 2017 - 08:30 AM

Recently I picked up a 280z to have a driver, so this car is being more straight up race car built instead of dual purpose. I'll still be able to take it down to the local coffee meets and car shows, just not the driver type I was wanting it to be. So it's all about weight this time. 2600 race ready is my goal and with as much power as I have I'm sure I'll be asked for more cage this year!

#142 nathaninwa

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Posted 04 February 2017 - 11:38 PM

Got all this put together today. Caliper ended up perfect after I had to shim the inner bearing out. The hearings are closer together on the gm stuff so the outer bearing was binding on the spindles taper just before getting tight enough. So I found .030 worth of shim for a pinion, this was enough to get proper preload without bearing binding and proper caliper alignment

I'm pleased with the results, you can actually feel the weight difference in just spinning the rotor.

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#143 1969honda

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Posted 05 February 2017 - 09:04 AM

That's pretty sweet man. I never would have even thought to look at the GM hubs, looks nice and shiny.

#144 nathaninwa

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Posted 08 April 2017 - 08:22 PM

Well, got this project track ready. Racing begins next weekend with a local 1/8th mile top ten series

Borrowed some scales from a friend and all my hard work paid off over the winter. I was rewarde with a 2152lb race car with it 2326 with all safety gear and me in it

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#145 trackzpeed

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Posted 09 April 2017 - 05:19 AM

Looking great. Keep us updated on racing progress. Well done!

#146 nathaninwa

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Posted 2 weeks ago



https://youtu.be/jmoMYCe9x7A

Finally got back to the 1/4 mile this year after my winter upgrades. Nothing crazy but man the results are impressive

This is at PIR in Portland on there street grudge night/test and tune

I made 4 passes doing some testing on Wastegate pressures and starting to turn it up

Major changes this year are a Glide versus the 80e I had, a2a versus a2w cooler and some random weight savings

Setup is still soft on the launch as Portland isn't usually that great with the prep

First pass. 4lb spring, 3400 launch. 10.46@145

Second pass. 10lb spring, 3400 launch. 9.76@152

Third pass. 10lb spring in low gear, ramped in 14lbs in high gear, 3400 launch. 9.39@165

Fourth and final pass. 10lb spring ramped to 14psi in low gear, ramped from 14 to 18ish lbs in high gear, raised the two step 4000. Car mustard an 8.86@171.7

And to be honest, like how we all datalog in our heads, it could have taken more power in low gear, and a bit more in the top of high gear. I could feel the car nose over near the finish and it may have taken more two step as well. But I was happy it made a clean pass and it drove on to the trailer!

The last pass was a medium soft, 1.5x sixty foot with a 5.9x@131 1/8th mile time. The car picked up 40mph on the back half!

#147 RebekahsZ

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Posted 2 weeks ago

Just amazing!

1972 240z, purchased in 1991 for $900. Bone stock LS2/T56/DBW from 2006 GTO, swap completed in 2011. 400rwhp/435 rwtq. 2400# minus driver. JCI swap, Mantic ER2 clutch kit, JTR headers, single exhaust, Borla muffler, MGW shifter, M2 Differentials shortened Z31 CV axles, Z31 CLSD R200, Chequered Flag Racing billet stubs and companion flanges. MSD 2-step, Hurst roll control, both operated from switches on clutch pedal. 9" Hoosier drag slicks on Weld Draglites, 245/45/16 Hoosier A6/R6 on 16X8+10 Rota RBR. 225/250 sectioned coilovers, Koni 8610-1437RACE shocks, DP and EMI camber plates, MM shortened rear control arms, TTT front control arms, poly and aluminum bushings. Top speeds: Ohio Mile 174mph, C/GMS class record holder, best 1/8 mile 6.96 at 100mph, best 1/4-mile 11.0 at 126mph, best 60' 1.43, best 1/2-mile 148mph at GA 1/2-mile. Home Track-Jake's Dragway, Moulton, AL. SCCA autocross club - TVR, Huntsville, AL. Lets race!


#148 trackzpeed

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Posted 2 weeks ago

Very impressive!






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