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nathaninwa

Project Rex Killer, 240z LS3

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nathaninwa    1

Got the water pump installed, wow what a mod if i can recommend one. Very cool to be able to run a pump and fan with the engine off

 

Got the new gears installed yesterday too. I'll beat cycle them today

 

Here is the car assembled minus the drag wing. Ill get to that In a few weeks.

 

Going to shake the car down on Friday

 

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nathaninwa    1

Went to an 1/8th mile track today and got 4 test passes in, after a bar change to make the car no go stage right, and a minor two step adjsuwkrnt, I was able to sneak a [email protected]

 

Then went on in to Portland 1/4 mile and with the 6.17 tune up still in it the launched way different and and did this criss cross lean into a wheelie pulling left front then picking right front about 12 inches I'm told. I stayed in it and ran my only full pass tonight at [email protected] running it out at 11psi

 

I'm working on my license passes now and got my two launch only passes out of the way and I'll follow up with the remaining 4 next Friday

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nathaninwa    1

Been doing some work on this car. Updated some stuff up front, redid radiator and shroud along with moving it forward, dropping some weight too. Also updated to the borg warner race cover on the turbo

 

Got a kirkey seat installed, saved a bunch of weight there and moved me down about 5 inches

 

Working on a new alum dash setup and wiring up the efi a little tidier with all the add ons I did over last season

 

Powerglide parts are on the way

 

And what I'm excited about. Doing some googling I read on Hybridz that gm hubs will bolt onto the s30 spindle. After looking at a PDF of all the hubs, I chose the mid 80's G body hub. Replacing the 300z hub i setup everything around this hub is almost a drop in with rotor placement 1/8 closer and the wheel moving in 1/16. The 3rd gen Camaro would put the rotor in the same location for me but move the wheel out 1/16. Some minor matching of my own rotor hat and wheel spacer can solve this but over happy with the bolt on rotor and wilwood stocks a seal that fits the spindle too

 

The rotor no longer bolts to the back as it does on the 300z setup, rather its sandwiched between the wheel and hub. Getting the correct the rotor fitment means a 3/4 wheel spacer for me to keep the 300z wheel mounting surface location. I'll use 3 inch studs to make all this happen as one unit

 

IMG_0936_zpsfwfvv5j3.jpg

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nathaninwa    1

I forgot to cross post. Here is a post from a thread that got moved with my 8.50 pass

 

 

Hi guys. After a summers worth of test and tunes, new parts and modifying old ones, ran a new personal best yesterday The run was clean and straight, very happy with the results

 

https://youtu.be/m6_jfZbFEm8. Video from outside

 

In car video

 

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nathaninwa    1

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!

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nathaninwa    1

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.

 

IMG_0938_zpscgi0itsd.jpg

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nathaninwa    1

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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nathaninwa    1

 

 

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. [email protected]

 

Second pass. 10lb spring, 3400 launch. [email protected]

 

Third pass. 10lb spring in low gear, ramped in 14lbs in high gear, 3400 launch. [email protected]

 

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 [email protected]

 

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 [email protected] 1/8th mile time. The car picked up 40mph on the back half!

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